volume 15 section 1: general information · 2020-02-15 · section 1: general information you will...

VOLUME 15

Section 1: General Information

SECTION 1: GENERAL INFORMATION

SECTION 1 GENERAL INFORMATION

Index ..............................................................................................................Sheet 1 Introduction Letter .........................................................................................Sheet 2 Application for Service ..................................................................................Sheet 3 Underground Service Alert ............................................................................Sheet 4

VOLUME 15 – ENGINERING & CONSTRUCTION STANDARD


INDEX Drawn: Eng: Appr: Date: Revision: 4 CLD CLD 9/14 Sheet 1 of 6

SECTION 1: GENERAL INFORMATION GENINF1

To: Volume 15 Holders

This is NVEnergy's Gas Distribution Construction Standard, which is also known as Volume 15.

These standards convey NVEnergy’s requirements for gas main, service, and meter installations. They are based upon current engineering practice and design with consideration for safety, ease of installation, facility operations, and economy.

Volume 15 is designed to assist a wide variety of users such as contractors, developers, planners, and inspectors. You should be able to identify and use the standards which pertain to your area of responsibility. These standards will be referred to on construction drawings and contracts with NVEnergy.

There should be no exceptions to the construction requirements in these standards. However, if it becomes necessary to construct a gas facility in a non-standard manner, the assigned Utility Project Coordinator, Inspector or Supervisor must approve the construction.

A current version of Volume 15 can be found on-line at:

https://www.nvenergy.com/business/newconstruction/newconstructionN/standards/gas_standards/vol_1 5.cfm

Contractors or other non NVEnergy entities will be responsible to print copies for field personnel to have on hand at the job site.

Suggestions for improvement to existing standards, or development of new standards, are encouraged. Please forward any inquiries or proposals to:

NVEnergy Gas Engineering Service (R30GW) P.O. Box 10100 Reno, NV 89520-0024

(775) 834-7038

We trust that you will find this information helpful in completing your work, and that you will use Volume 15 in a manner for which it was intended.

Sincerely,

NVEnergy’s Standards Team



INTRODUCTION LETTER Drawn: Eng: Appr: Date: Revision: 4 CLD CLD 9/14 Page 2 of 6

https://www.nvenergy.com/business/newconstruction/newconstructionN/standards/gas_standards/vol_1


APPLICATION FOR SERVICE

To apply for service, call or stop by NVEnergy's Customer Service Engineering office located at 1 Ohm Place, south off Mill St. between Rock Blvd. and McCarran Blvd. Our telephone number is 834-4555.

Ask to speak with a Utility Design Administrator. For commercial, industrial, and apartment applications, the request for service will generally require the following:

Owner Information - Deed of Property Site Plan Civil Plan Utility Plan Mechanical Plan Landscaping Phasing Architectural Plan Mechanical Plans BTU Requirements Load per Meter Meter Locations High Pressure Requests (if applicable)

Please go to the following web site for a more detailed listing of requirements for service: https://www.nvenergy.com/business/newconstruction/newconstructionN/need_gas.cfm

It is important that NVEnergy's Distribution Design group be provided, as early as possible, with accurate load information and the date when the customer will require service so that all necessary arrangements may be completed.



APPLICATION FOR SERVICE Drawn: Eng: Appr: Date: Revision: 4 CLD CLD 9/14 Page 3 of 6

https://www.nvenergy.com/business/newconstruction/newconstructionN/need_gas.cfm


ATTENTION: CONTRACTORS, DEVELOPERS, HOMEOWNERS & ENGINEERS

STOP!! CALL BEFORE YOU DIG!!

Before you start any excavation work using mechanical equipment, call Underground Service Alert of Northern/Central California and Nevada (USA North). You may want to start a large trenching job, auger a post hole, or excavate to install a swimming pool, but do you want to cut off electricity, telephone, water, gas, TV, or other important underground facilities in the process? That could happen if you start digging before checking the location of underground facilities with USA North.

To avoid this costly inconvenience, or the possibility of a severe accident call USA North's. toll- free notification center, at least 2 working days before you dig. When you call USA North at 811, you reach a coordination center for all participating utility operators. All the participating members that have facilities in your work area will be notified of where you intend to dig.

USA North may be new to you so here is how it works. Outline your proposed excavation area in white paint. If you are planning to dig in the State of Nevada or Central and Northern California call 811, two (2) working days before you plan to dig between 6:00AM and 7:00PM (PST), Monday through Friday excluding holidays. A trained operator will answer your call and ask for the following information:

USA NORTH TICKET INFORMATION 811

PHONE: ALTERNATE PHONE: FAX NUMBER: E-MAIL ADDRESS: YOUR NAME: YOUR COMPANY NAME: TYPE: INDUSTRY: COMPANY'S ADDRESS: CITY: STATE: ZIP: WHAT COUNTY IS YOUR WORK BEING DONE IN? START DATE: (2 WORKING DAYS NOTICE REQUIRED) START TIME: COMPANY YOU ARE WORKING FOR: AS REQUIRED, HAVE YOU OUTLINED YOUR EXCAVATION SITE WITH WHITE PAINT? PERMIT TYPE: PERMIT NUMBER: FOREMAN'S NAME: DOES YOUR EXCAVATION INCLUDE BORING, IF SO WHAT TYPE? WORK TYPE: (AUGERING, DRILLING, GRADING, RIPPING, TRENCHING, ETC.) PLACE: (CITY OR COMMUNITY) DIG SITE TYPES: ADDRESSE(S) BETWEEN 2 NEAREST STS., STREET BETWEEN 2 NEAREST STS., STREET & NEAREST ST., INTERSECTION, OR BOUNDED BY AREA THAT CONTAINS NO STREETS; INCLUDE SIDE OF STREET, FOOTAGES, OTHER TIE IN MEASUREMENTS OR LAT/LONG IN NAD 83 CONUS DECIMAL FORMAT


SECTION 1 GENERAL INFORMATION CALL BEFORE YOU DIG

UNDERGROUND SERVICE ALERT Drawn: Eng: Appr: Date: Revision: 4 CLD CLD 7/17 Page 4 of 6


You will next be given a ticket number so if you ever have any occasion to call USA North or other utilities about this particular excavation you can refer to the ticket number for ease of identification.

PLEASE REMEMBER, YOUR LOCATION REQUEST IS ONLY GOOD FOR 14 CALENDAR DAYS IN NEVADA.

Your excavation information will be promptly transmitted via high-speed computer to the participating organizations that may have underground facilities at that location. Each participating organization will, in accordance with their location policy, provide information about or locate and identify the location of its facilities by staking and/or marking the horizontal paths on the surface in uniformity with the USA North color code. These color codes have been adopted for use by all USA North members.

COLOR FACILITY

RED ELECTRIC LIGHTING

YELLOW GAS-OIL-STEAM-CHEMICAL

ORANGE COMMUNICATION/CATV ALARM/SIGNAL CABLES/CONDUITS

BLUE POTABLE WATER

GREEN SEWER STORM DRAIN

PURPLE RECLAIMED WATER IRRIGATION SLURRY

PINK TEMP. SURVEY MARKINGS

WHITE PROPOSED EXCAVATION

Please try to preserve/maintain your location marks as long as possible to avoid remarks within the 14 day period.

After you call USA North, you should contact directly any non-participating underground organizations that serve your area. As in the past, USA North does not provide location service for engineering design work. Please refer these requests to the individual agencies involved.

Emergencies during normal working hours of the center will be processed as promptly as possible. Emergencies after center closing hours should be called directly to the organizations whose facilities are involved. If you experience a life threatening situation please call 911 or the local fire department.



VOLUME 15 REVISION HISTORY Drawn: Eng: Appr: Date: Revision: 4 CLD CLD 7/17 Page 5 of 6


"CALL BEFORE YOU DIG" saves you time and money, reduces damages to underground facilities, promotes safety on your jobs, and helps you comply with the State of Nevada Occupational Safety and Health Standards for the construction industry.

Due to the tremendous success of the CALL BEFORE YOU DIG program, which began in 1975, USA North has been able to expand throughout Central and Northern California, and the entire States of Nevada.

If the USA North program is to be totally successful, one call must reach all underground operators.This is where you come in!!!

EXCAVATORS:

If you are an excavator working in the State of Nevada or Central and Northern California, call 811 two (2) working days before you dig and let USA North contact all participating members. This will save you valuable lost production time.

Remember, CALL BEFORE YOU DIG is the law. Let's all join together and help USA North make our communities a safer place to live and work in!!!

Sincerely,

NVEnergy's Service Center Team



VOLUME 15 REVISION HISTORY Drawn: Eng: Appr: Date: Revision: 4 CLD CLD 7/17 Page 6 of 6

VOLUME 15

Section 2: Guidelines

SECTION 2: GUIDELINES GUXXX5U

SECTION 2 GUIDELINES CONTENTS

INSTALLATION OF U/G ELECTRIC & GAS FACILITIES IN RESIDENTIAL SUBDIVISIONS-GU0005U 1.0 INDEX ...................................................................................................................................................................... PAGE 2 2.0 PURPOSE ................................................................................................................................................................ PAGE 2 3.0 DEFINITIONS ......................................................................................................................................................... PAGE 2 4.0 SCOPE OF WORK ................................................................................................................................................. PAGE 3 5.0 INSPECTION AND PERFORMANCE ................................................................................................................ PAGE 4 6.0 CHANGES ............................................................................................................................................................... PAGE 4 7.0 EXCAVATION........................................................................................................................................................ PAGE 5 8.0 BACKFILL .............................................................................................................................................................. PAGE 5 9.0 CONCRETE ............................................................................................................................................................ PAGE 5 10.0 COMPACTION....................................................................................................................................................... PAGE 6 11.0 WORKMANSHIP ................................................................................................................................................... PAGE 6 12.0 GAS INSPECTION PUNCH LIST........................................................................................................................ PAGE 7 13.0 SAMPLE LETTER OF SUBGRADE.................................................................................................................... PAGE 8


GUXXX5U SECTION 2 GUIDELINES

INDEX Drawn: Eng: Appr: Date: Revision: 1 CD CD 9/14 Page 1 of 8

SECTION 2: GUIDELINES GU0005U

INSTALLATION OF U/G ELECTRIC & GAS FACILITIES IN RESIDENTIAL SUBDIVISIONS

1.0 INDEX

1.0 INDEX 2.0 PURPOSE 3.0 DEFINITIONS 4.0 SCOPE OF WORK 5.0 INSPECTION AND PERFORMANCE 6.0 CHANGES 7.0 EXCAVATION 8.0 BACKFILL 9.0 CONCRETE 10.0 COMPACTION 11.0 WORKMANSHIP 12.0 GAS INSPECTION PUNCH LIST 13.0 SAMPLE LETTER OF SUBGRADE

2.0 PURPOSE

The procedures and requirements as set forth in this standard are to provide guidance for work done by the applicant for the installation of electric & gas facilities for the exclusive use by NVEnergy in a residential subdivision.

3.0 DEFINITIONS

Applicant: The Owner(s), Developer(s), or their designated representative.

NVE: NVEnergy

Utility Project Coordinator (UPC): NVE’s engineering representative.

Inspector: NVE’s employee designated to inspect installation of any portion of electric, gas, or water facilities to be owned and/or maintained by NVE.

Operations Coordinator: NVE’s operating representative who coordinates the start of construction dates.


GU0005U SECTION 2 GUIDELINES INSTALLATION OF U/G ELECTRIC &GAS

FACILITIES IN RESIDENTIAL SUBDIVSIONS Drawn: Eng: Appr: Date: Revision: 2 CD CD 9/14 Page 2 of 8


4.0 SCOPE OF WORK

4.1 Work by Applicant: Applicant shall perform all work necessary to construct or install facilities in accordance with NVE’s work order drawings, as follows:

A) Applicant’s engineer shall provide all staking as outlined in NVE’s Standard GI0001U for electric & gas facilities. (Section 3)

B) Furnish excavation and approved backfill of trenches and vaults for electric facilities, TE0001U & SUB01X. (Section 3)

C) Provide and install substructures including concrete encasement (if required), vaults, manholes, hand holes, pull boxes, transformer pads, equipment pads, ground rods, conduit and risers as shown on NVE work orders.

D) Applicant - installed gas systems shall be in accordance with the standards issued for each project by the Gas Engineer.

E) Applicant shall be solely responsible for protecting gas pipe, valves, electric cables, ducts, and structures from superimposed loading created by construction equipment or otherwise. Applicant shall repair or pay for any damage done to above equipment to meet NVE’s Inspector’s approval.

F) Applicant is responsible for contacting Underground System Alert (USAN) 811 two days before digging.

G) Applicant is responsible for grouting vaults, and installing a minimum of 5/32" polypropylene pull line with a minimum breaking strength of 480 pounds in each conduit. Mandreling the conduit shall be required as per NVE standard CD0001U. (NVE Volume 17)

H) Applicant shall not cut holes in or enter existing NVE energized vaults/manholes or transformers without Inspector or other qualified NVE employee being present. Applicant shall notify the Inspector 24 hours in advance when work is to be performed on existing energized vaults.

I) Applicant is responsible for providing enough space for proper layout of all utilities.

J) Applicant shall not install other utilities' boxes/equipment over NVE conduit.

4.2 Work by NVE: NVE shall perform the work necessary to complete the electric & gas systems as contracted for by Applicant. For the electric system, this includes transformers, switches, high voltage cable, service conductor, meter(s), and all connections.





5.0 INSPECTION AND PERFORMANCE

5.1 Preconstruction conferences will be scheduled to coordinate the start of construction. Those to attend should include NVE’s Utility Project Coordinator, Operations Coordinator, and/or Inspector(s); Applicants General or Excavating Contractor, and Engineer; and Representatives of other utilities, i.e. Communication, TV, City, etc...

5.2 Applicant shall inform the inspector at least two work days in advance before commencing any item of construction or installation of material to enable proper inspection of materials and workmanship. Materials and/or workmanship failing to meet specifications or installed without prior notice to inspector will be subject to rejection. Any work rejected shall be immediately corrected at applicant’s expense. No work shall be backfilled or otherwise covered or concealed until it has been inspected and approved by the Inspector.

5.3 All materials and workmanship shall be first quality in every respect, plumb and true and according to the specific requirements of the work order drawings, NVE’s standards, and this specification.

5.4 Where interpretation or clarification of intent of any drawing is required, the Inspector, UPC, Standards and the Contractor will work together to resolve the problem.

5.5 If any portion of the completed system fails to operate satisfactorily due to defects in applicants work, the defect and any damaged portion of the system shall be corrected at the Applicants expense and to the satisfaction of NVE Inspector.

6.0 CHANGES

6.1 By mutual consent, in writing, additions/deletions may be made to these requirements without voiding this standard.

6.2 Any charges for additional work for NVE brought about by Applicant’s changes will be billed directly to the Applicant with payment due prior to service(s) being made available.





7.0 EXCAVATION

7.1 Typical order of Utility installation is: Sewer and/or Storm Drains, Electric-Telephone-Cable TV, Water and/or Gas. Subgrade shall be established prior to staking of Electric facilities. A Letter of Subgrade must be received by the NVE Gas Inspector prior to gas and pipe installation. A sample Letter of Subgrade is provided on sheet 8 of this section.

7.2 Property lines shall be chiseled on the curb and finish stakes in place prior to obtaining approval from the Inspector to proceed with excavation for electric. All trenching shall be in accordance with OSHA requirements. Prior to the start of electric trenching, the Applicant may install electric conduit at street crossings for his convenience provided permission to do so is obtained from the Inspector and the installation itself is inspected and approved.

8.0 BACKFILL

8.1 Backfill material shall be approved by the Inspector and shall meet NVE's Standard SUB01X. In addition, backfill material shall meet governmental codes and ordinances, as applicable.(see Section 3)

8.2 A minimum of 6" of NVE approved sand shall be placed below conduit(s) and compacted to 90% of the relative maximum density. After the conduit installation, an additional compacted sand cover of not less than 12" shall be installed and compacted to 90%.

8.3 Applicant shall place NVE approved backfill in trenches in the presence of the Inspector. When joint construction is utilized, two or more backfill operations shall be required. Applicant shall be responsible for the cost of repair if any damage occurs to the cables or ducts where damage results from failure of Applicant to follow proper backfill procedures.

8.4 No native backfill larger than 4" shall be permitted and no native backfill shall be placed directly on the pipe, cable, conduit in accordance with SUB01X.

9.0 CONCRETE

9.1 Concrete encasement of 90o sweeps may be required on primary/secondary conduits runs with multiple sweeps.

9.2 Other concrete encasements may be required, see CD0001U, Section 13, Volume 17.





10.0 COMPACTION

10.1 Backfill above the first 12" lift shall be secured with mechanical tamping units (not the tire or track of vehicles).

10.2 Backfill shall be placed in maximum lifts of 12".

10.3 Backfill shall be moistened as required to obtain compaction.

10.4 Compaction shall be a minimum of 90% of the relative maximum density, as determined by the Method ASTM D-1557. Local agencies whose ordinances require compaction in excess of 90% shall prevail.

10.5 Applicant is responsible for obtaining two compaction tests on all transformer and equipment pads.

A) The first compaction test shall be a minimum of 90% of the relative maximum density on the 12" of sand.

B) The second compaction test shall be a minimum of 95% of the relative maximum density on the 8" (minimum) base.

11.0 WORKMANSHIP

11.1 All vaults, hand holes, pull boxes, etc..., located behind sidewalk shall be parallel to sidewalk and set .20" above sidewalk so water does not drain into the vault. See TE0001U, Section 7.3.

11.2 Padmounted transformers and switch pads shall be parallel and flush with the back of the sidewalk, and the bottom of the pad shall be level to the top of the sidewalk.

11.3 If there are no sidewalks, another reference will be established by NVE’s UPC, Inspector and the Contractor.

11.4 All material furnished by Developer to be onsite prior to the start of any work by NVE.

11.5 All work to be done in accordance with OSHA regulations.




_____________________________________________________________________________________________

_____________________________________________________________________________________________

_____________________________________________________________________________________________

_____________________________________________________________________________________________

_____________________________________________________________________________________________

12.0


INSTALLATION OF U/G FACILITIES IN RESIDENTIAL SUBDIVISIONS

GAS INSPECTION PUNCH LIST

PROJECT NAME: __________________________________________DATE: ______________

W.O. # _____________________ INSPECTOR: _______________________________

PLANNER: ________________________ COORDINATOR: ______________________

DEVELOPER: _____________________ CONTRACTOR: _______________________

STEPS BY CONTRACTOR APPROVED (INITIAL)

NVENERGY’S INSPECTOR TO CHECK STANDARD IN VIOLATION

1. Letter of Subgrade 9. Gas Riser Location (GM0010)

2. Grade and Location Stakes (GI0001U-GI0002U) 10. Gas Main Pressure Test (GCS01G)

3. Equipment Locations (TE0020) 11. Tracer Wire(GCS01G)

4. Trench Depth (TE0003) 12. Test Stations(CPI Sec.5)

5. Trench Bedding (SUB01X) 13. Valve Boxes to Grade

6. Pipe Installation 14.

7. Box (es) Placement 15.

8. Final Fill (SUB01X) 16.

17. Final acceptance by NVE Inspector:______________________________________________________

PLEASE CALL YOUR LOCAL NVE OFFICE 48-HOURS IN ADVANCE OF INSPECTION IN RENO PLEASE CALL 834-4356 48-HOURS IN ADVANCE OF INSPECTION

WHITE: NVE YELLOW: Developer PINK: Contractor

This form is to be maintained by NVE's Inspector and turned in with the "as built" drawing for a permanent record.





13.0 SAMPLE LETTER OF SUBGRADE

ATTENTION: (INSPECTOR OR NVE REPRESENTATIVE)

RE: (JOB NAME)

The above referenced project has been surveyed by (independent certified engineering firm) and it has been determined that the existing subgrade is within + 0.3 feet of design subgrade. This "subgrade" is defined as: final grade prior to roadway base and asphalt.

NVE utilities will be staked and installed from this subgrade.

In the event that this subgrade changes and effects the final depth and/or condition of the utilities, the Developer/Applicant will be responsible, at their expense, for the relocation and/or repair of the utilities effected by the change.

Sincerely,

(Developer/Applicant and/or it's Contractor)




VOLUME 15

Section 3: Staking and Trenching

SECTION 3: STAKING AND TRENCHING S&TXXX

SECTION 3 STAKING AND TRENCHING CONTENTS

UNDERGROUND FACILITIES STAKING REQUIREMENTS-GI0001U 1.0 INDEX ...................................................................................................................................................................... PAGE 3 2.0 PURPOSE ................................................................................................................................................................ PAGE 3 3.0 GENERAL ............................................................................................................................................................... PAGE 3 4.0 STAKING PROCEDURE....................................................................................................................................... PAGE 3 5.0 NVE / DEVELOPER COORDINATION.............................................................................................................. PAGE 4 6.0 ELECTRIC STAKING DETAILS......................................................................................................................... PAGE 5 7.0 GAS STAKING DETAILS ..................................................................................................................................... PAGE 5 8.0 DEVELOPER RESPONSIBILTIES...................................................................................................................... PAGE 6 9.0 EXAMPLES OF STAKE LETTERING ............................................................................................................... PAGE 6

SUBDIVISION PUBLIC UTITILY EASEMENT STAKING-GI0002U SUBDIVISION PUBLIC UTITILY EASEMENT STAKING DETAIL DRAWING ....................................PAGE 7

EXCAVATION AND TRENCHING SAFETY REQUIREMENTS-GI0003U 1.0 INDEX ...................................................................................................................................................................... PAGE 8 2.0 PURPOSE ................................................................................................................................................................ PAGE 8 3.0 GENERAL EXCAVATION REQUIREMENTS.................................................................................................. PAGE 8 4.0 SPECIFIC TRENCHING REQUIREMENTS ..................................................................................................... PAGE 9 5.0 REFERENCES ........................................................................................................................................................ PAGE 10

TRENCH BEDDING & BACKFILL-SUB01X 1.0 INDEX ...................................................................................................................................................................... PAGE 13 2.0 SCOPE...................................................................................................................................................................... PAGE 13 3.0 GENERAL ............................................................................................................................................................... PAGE 13 4.0 MATERIALS........................................................................................................................................................... PAGE 14 5.0 CONSTRUCTION................................................................................................................................................... PAGE 17 6.0 FIELD SAMPLING AND TESTING .................................................................................................................... PAGE 18

TRENCH EXCAVATION STANDARDS-TE0001 1.0 INDEX ...................................................................................................................................................................... PAGE 20 2.0 PURPOSE ................................................................................................................................................................ PAGE 20 3.0 GENERAL ............................................................................................................................................................... PAGE 20 4.0 TRENCHING GUIDELINES................................................................................................................................. PAGE 20 5.0 SAFETY ................................................................................................................................................................... PAGE 22 6.0 ENVIRONMENTAL............................................................................................................................................... PAGE 22 7.0 BOX / VAULT / JUNCTION ENCLOSURE INSTALLATION ........................................................................ PAGE 23 8.0 PAD INSTALLATION ........................................................................................................................................... PAGE 25

TYPICAL TRENCH DETAIL-TE0003 TYPICAL TRENCH DETAILS-GENERAL NOTES........................................................................................................ PAGE 27 TYPICAL SERVICE TRENCH DETAIL DRAWINGS ................................................................................................... PAGE 29 TYPICAL MAIN TRENCH DETAIL DRAWINGS.......................................................................................................... PAGE 30

STREET CROSSING AND UTILITIES LOCATION DETAIL-TE0004 STREET CROSSING AND UTILITIES LOCATION DRAWING ................................................................................. PAGE 31 CLEARANCES WITH STREET CROSSING LOCATION DRAWING........................................................................ PAGE 32


S&TXXX SECTION 3 STAKING AND TRENCHING


SECTION 3: STAKING AND TRENCHING S&TXXX

REFURBISHMENT TRENCH DETAIL-TE0005 REFURBISHMENT TRENCH DETAIL DRAWING (ABANDON DIRECT BURIAL) .............................................. PAGE 33

EQUIPMENT LOCATION DETAIL-TE0020 GENERAL UTILITY LOCATION DETAIL ..................................................................................................................... PAGE 35 PERFERRED SECONDARY BOX LOCATION DETAIL .............................................................................................. PAGE 36 ALTERNATE SECONDARY BOX LOACTION DETAIL.............................................................................................. PAGE 37 TYPICAL SPLICE BOX PLAN VIEW............................................................................................................................... PAGE 38 TYPICAL SPLICE BOX PLAN INSTALLATION ........................................................................................................... PAGE 40 PRIMARY VALUT LOCATION DETAIL ........................................................................................................................ PAGE 43 TRANSFORMER PAD LOCATION DETAIL .................................................................................................................. PAGE 44 FRONT LOT LINE CONSTRUCTION.............................................................................................................................. PAGE 44


S&TXXX SECTION 3 STAKING AND TRENCHING


SECTION 3: STAKING AND TRENCHING GI0001U

STAKING REQUIREMENTS

1.0 INDEX

1.0 INDEX 2.0 PURPOSE 3.0 GENERAL 4.0 STAKING PROCEDURE 5.0 NVE / DEVELOPER COORDINATION 6.0 ELECTRIC STAKING DETAILS 7.0 GAS STAKING DETAILS 8.0 DEVELOPER RESPONSIBILTIES 9.0 EXAMPLES OF STAKE LETTERING

2.0 PURPOSE

The purpose of this Standard is to provide guidelines for the staking of utility installations in single-family, multiple resident, and commercial areas.

3.0 GENERAL

Utility staking is contingent upon the completion of the following by the developer:

3.1 Clearing and cutting streets, sidewalks, and utility easements (if in public R/W), to subgrade.

3.2 Establishment of lot corners or an offset for protection and finished street, curb, and sidewalk grades where required.

4.0 STAKING PROCEDURE

The developer is to provide and maintain the staking in the following order.

4.1 Subgrade Stakes: These indicate the offset and grade cut or fill at the following locations as appropriate:

a. Property corners (none on apartments and townhouses). b. Lot pad corners (none on apartments and townhouses). c. Building corners (none on lot sale developments). d. Other locations as required.


GI0001U SECTION 3 STAKING AND TRENCHING UNDERGROUND FACILITIES STAKING REGUIREMENTS Drawn: Eng: Appr: Date: Revision: 2

CD CD 7/14 Page 3 of 47


Subgrade stakes are generally correct to within 0.2' which is sufficient precision to stake subgrade. However, care must be exercised when staking a utility location in that a greater degree of precision may be necessary.

4.2 It is the developer’s responsibility to see that finish grade is staked, in all areas back of sidewalk, where there will be utility installations. If the finish grade is not provided, the minimum trench depth in the unstaked area will be 75" - 80".

4.3 Curb and Gutter Stakes: These stakes indicate the offset and grade cut or fill, normally to top of curb. They are set with greater precision and are generally correct to within 0.02'.

4.4 Final Lot Corners: These are not normally staked until all construction is complete and are of little use in staking of underground utilities.

5.0 NVE / DEVELOPER COORDINATION

When approaching the task of providing utilities for a proposed development, the following is normally required.

5.1 NVE Utility Design Coordinator (UDC) reviews information with the developer.

5.2 Developer reviews plans with NVE, UDC/designer at pre-construction meeting.

5.3 If NVE does surveying, NVE’s Operating Department checks and releases the project for staking.

5.4 The developer provides the staking and grading necessary for utility installation.

5.5 NVE UDC or operating personnel and developer agents review plans at the project site.

5.6 Check standard street improvements and compare with project plans. Reno Sparks

R/W width 50 60 70 80 55 80 B/C to B/C 41 43 61 67 43 67 Back of a 4' sidewalk to R/W line 0.5 4.5 0.5 2.5 2.0 2.5

5.7 Before staking, the developer shall confirm the location of property corners to ensure that they conform to the proper established street R/W widths.





6.0 ELECTRIC STAKING DETAILS

6.1 Normally, the electric staking shall include C/L trench, boxes and vaults, lot corners, and all intermediate points as required.

6.2 Offset Distance: A distance shall be selected which will ensure the protection of stakes during trenching. This distance is generally 10' to 15' to centerline of trench but may depend on site conditions. The stakes may be placed adjacent to the developer’s subgrade stakes if the offset distance is adequate, or may, in fact, be the same if so marked.

6.3 Stake Interval: Stakes will be placed normally at or near property corners, but the interval may have to be decreased to 25' or less on curves in order to ensure that the trench will be properly aligned with the curve.

a. Distance to centerline of underground trench “C/L U/G Elec 15'.” b. Distance to centerline of underground box “CTR N-9 box 14 1/2'.” c. To corner of underground box (where required) “NE Cor 504 14 1/2'.”

6.4 General:

a. Although the center location on small electric boxes and property line structures are normally adequate, in most cases it will be necessary to stake two corners on the larger boxes. When a box is to be placed against the back face of a sidewalk or any other critical location, care must be exercised to ensure adequate precision in staking.

b. On some developments, such as apartments and condominiums, careful coordination with the developer’s agent is essential as to the location of structures, such as sidewalks, sewers, etc., and finish grades which are subject to change.

7.0 GAS STAKING DETAILS

7.1 Offset Distance: An offset distance, from C/L of trench, shall be selected which will ensure the protection of stakes during trenching. The stakes, normally, are placed adjacent to the developer’s curb and gutter stakes which provides an adequate offset.

7.2 Interval: Stakes will be placed at or near the property corners or at 50' intervals. However, the interval may have to be decreased to 25' or less on curves or where the site conditions otherwise dictate.





7.3 Stake Lettering: Given below is an example of typical stake information necessary for utility installation.

a. Distance to centerline of gas trench “C/L Gas 10'”

8.0 DEVELOPER RESPONSIBILITIES

8.1 Maintenance and Adjustments: The Developer is responsible for maintenance of all stakes and adjustments of all boxes and pads to proper grade.

9.0 EXAMPLES OF STAKE LETTERING





SUBDIVISION PUBLIC UTILITY EASEMENT STAKING


GI0002U SECTION 3 STAKING AND TRENCHING SUBDIVISION PUBLIC

UTILITY EASEMENT STAKING Drawn: Eng: Appr: Date: Revision: 2 CD CD 7/14 Page 7 of 47


EXCAVATION AND TRENCHING SAFETY REQUIREMENTS

1.0 INDEX

1.0 INDEX 2.0 PURPOSE 3.0 GENERAL EXCAVATION REQUIREMENTS 4.0 SPECIFIC TRENCHING REQUIREMENTS 5.0 REFERENCES

2.0 PURPOSE

The purpose of this standard is to outline OSHA requirements as they apply to excavations for NVEnergy’s underground facilities. Facility installation will not be accepted and NVE's field personnel will not participate in the facility installation if these OSHA requirements are not adhered to. The Contractor alone is responsible for the compliance of these requirements.

3.0 GENERAL EXCAVATION REQUIREMENTS

3.1 Prior to opening an excavation, all other utility companies must be contacted, (USAN, Call Before You Dig, 811) to determine if conflicting installations will be encountered, and if so, their location, depth, etc.

3.2 Surface encumbrances, such as trees, boulders or construction materials which may create a hazard to persons working on or in excavations, must be made safe before excavation is begun.

3.3 Excavated material, from excavations which persons are required to enter, must be stored at least 2 feet from the edge of the excavation or effectively retained by the use of barriers.

3.4 The walls and faces of all excavations in which persons are exposed to danger from moving ground shall be guarded by a shoring system, sloping off the ground, or some other equivalent means. Supporting systems shall be designed by a qualified person and meet accepted engineering requirements. Determination of the slope angle or design of the shoring system shall be based on such factors as excavation depth, anticipated changes of the material from exposure or surface loading due to equipment, traffic vibrations or excavated materials. (See Table I for sloping requirements and Table II for minimum shoring requirements.)


GI0003U SECTION 3 STAKING AND TRENCHING EXCAVATION AND TRENCHING

Drawn: Eng: Appr: Date: Revision: 2 CD CD 7/14

SAFETY REQUIREMENTS Page 8 of 47


3.5 Materials used for shoring shall be in good serviceable condition, with timbers sound, and free from large or loose knots and of proper dimensions.

3.6 Excavations below the level of the base footing of any foundation or wall shall not be permitted, unless the wall is underpinned and other precautions are taken to insure the stability of adjacent walls.

3.7 Water shall not be allowed to accumulate in an excavation. Diversion ditches, dikes, etc., shall be used to prevent the entrance of surface water and to provide drainage of the adjacent area.

3.8 Dust conditions shall be kept to a minimum by the use of water or other means.

3.9 Ladders used in excavations shall be in accordance with the OSHA subpart concerning the subject. (Part 1926, Subpart “L”)

4.0 SPECIFIC TRENCHING REQUIREMENTS

4.1 When persons are required to enter trenches, 4 feet or more in depth, an adequate means of exit, such as a ladder or steps, shall be provided and located so as to require no more than 25 feet of lateral travel.

4.2 Trenches in soft or unstable soil, 5 feet or more in depth, must be sloped, shored or otherwise supported by means of sufficient strength to protect persons working in them.

4.3 Trenches in hard or compact soil, 5 feet in depth and 8 feet or more in length, shall be shored or the trench sides above the 5 foot level sloped to be not steeper than 1 foot vertical to each 1/2 foot horizontal.

4.4 Trenches less than 5 feet deep shall also be protected when examination of the ground indicates hazardous ground movement may be expected.

4.5 Additional precautions, by way of shoring and bracing, shall be taken to prevent slides or cave-ins when trenches are dug in locations adjacent to backfilled areas or are subjected to vibration from railroad or highway traffic, the operation of machinery, or any other sources

4.6 Bracing or shoring of trenches shall be carried along with the excavation (see 3.0 A & B for maximum length without shoring)

.






4.7 Cross braces or trench jacks shall be placed in true horizontal position, be spaced vertically, and be secured to prevent sliding, falling or kick outs.

4.8 Portable trench boxes or sliding shields may be used, in lieu of a shoring system or sloping. The boxes or shields must be designed, constructed and maintained in a manner equal to or greater than the shoring system required for the trench.

4.9 Backfilling and removal of trench supports shall progress together from the bottom of the trench. Jacks or braces shall be released slowly and, in unstable soil, ropes shall be used to pull out the jacks or braces, from above, when all personnel have cleared the trench.

5.0 REFERENCES

Construction Safety and Health Regulations, Part 1926, Subpart “P”.






TABLE I MINIMUM SLOPING REQUIREMENTS

TABLE II MINIMUM SHORING REQUIREMENTS

Size and Spacing of Members

Depth of trench

Type of Earth

Minimum upright

dimensions in inches

Maximum upright

spacing in feet

Minimum stringer

dimensions in inches

Maximum stringer

spacing in feet

< 3'

Width of trench (cross braces)

3' to 6' 6' to 9' 9' to 12' 12' to 15'

Vertical in feet

Horizontal in feet

Hard, compact

4 x 4 or 2 x 6

6 ----- ----- 2 x 6 4 x 4 4 x 6 6 x 6 6 x 8 4 6

Five to Ten Feet

Likely to crack

4 x 4 or 2 x 6

close sheeting

4 x 6 4 2 x 6 4 x 4 4 x 6 6 x 6 6 x 8 4 6

Soft, sandy or

filled

4 x 4 or 2 x 6

close sheeting

6 x 8 4 4 x 4 4 x 6 6 x 6 6 x 8 8 x 8 4 6

Hydro-static

pressure

4 x 4 or 2 x 6

close sheeting

6 x 8 4 4 x 4 4 x 6 6 x 6 6 x 8 8 x 8 4 6

Hard, compact

4 x 4 or 2 x 6

4 4 x 6 4 4 x 4 4 x 6 6 x 6 6 x 8 8 x 8 4 6

10 to 15 Feet

Likely to crack

4 x 4 or 2 x 6

2 4 x 6 4 4 x 4 4 x 6 6 x 6 6 x 8 8 x 8 4 6

Soft, sandy or

filled

4 x 4 or 2 x 6

close sheeting

6 x 8 4 4 x 6 6 x 6 6 x 8 8 x 8 8 x 10 4 6

Hydro-static

pressure 4 x 4

close sheeting

8 x 10 4 4 x 6 6 x 6 6 x 8 8 x 8 8 x 10 4 6

Trench jacks may be used in lieu of, or in combination with, wood braces. Shoring is not required in solid rock, hard shale or hard slag. Where desirable, steel sheet piling and bracing of equal strength may be substituted for wood.


Drawn:

CD

Eng:

CD

Appr: Date:

7/14

SECTION 3 STAKING AND TRENCHING EXCAVATION AND TRENCHING

SAFETY REQUIREMENTS

GI0003U

Revision: 2 Page 11 of 47

SECTION 3: STAKING AND TRENCHING SUB01X

TRENCH BEDDING & BACKFILL

1.0 INDEX

1.0 INDEX 2.0 SCOPE 3.0 GENERAL 4.0 MATERIALS 5.0 CONSTRUCTION 6.0 FIELD SAMPLING AND TESTING

2.0 PURPOSE

This specification provides the requirements and standards for bedding of pipes and conduits, and for trench backfill materials and construction procedures, including testing and inspection.

3.0 GENERAL

3.1 Standard Test Methods: The following standard test methods of the American Society for Testing and Materials (ASTM) form a part of this specification and are referred to herein by alphanumeric designation.

ASTM DESIGNATION TITLE

C136 Sieve Analysis of Fine and Coarse Aggregates D423 Liquid Limit of Soils D424 Plastic Limit and Plasticity Index of Soils D1556 Density and Unit Weight of Soil in Place by the Sand-Cone Method D1557 Moisture-Density Relations of Soils Using 10-lb. (4.5-kg.) Rammer

and 18-in. (457-mm.) Drop D2419 Sand Equivalent Value of Soils and Fine Aggregate D2844 Resistant R-Value and Expansion Pressure of Compacted Soils D2922 Density of Soil and Soil-Aggregate in Place by Nuclear Methods

(Shallow Depth)

3.2 Substitute Test Method:

Where local practice prescribes revised test methods for the ASTM tests listed above, those tests may be substituted for the ASTM designated test method listed upon prior approval from NVE.


SUB01X SECTION 3 STAKING AND TRENCHING TRENCH BEDDING &

BACKFILL Drawn: Eng: Appr: Date: Revision: 2 CD CD 7/14 Page 12 of 47


3.3 Material Sources:

3.3.1 New Sources - The contractor or customer, at his own expense, shall have any bedding and backfill materials from sources previously undeveloped, or unfamiliar to NVE, tested and certified by an approved, independent materials testing laboratory, per these specifications.

3.3.2 Existing Sources - Bedding and backfill materials from sources previously developed and familiar to NVE may be accepted without testing and certification upon written request by the contractor or customer. NVE reserves the right to determine the acceptability of all materials proposed for use.

4.0 MATERIALS

4.1 Electric Conduit Sand Bedding

Material shall be free of ice, clay, organic matter or other objectionable material, and shall conform to the following standards:

4.1.1 Gradation per ASTM C136: PERCENT BY WEIGHT

SIEVE SIZE PASSING SIEVE

3/8" 100 #4 90-100 #50 10-40 #100 3-20 #200 0-15

4.1.2 Alternate Electric Conduit Bedding: Upon prior approval from NVE, native material may be utilized as bedding for electric conduit. Approval granted per this section in no way relieves the contractor or customer from meeting the requirements of the remaining sections of this specification. For NVE electric contract jobs, native material conforming to this section must be bid as an alternate material. The native material shall be free of rocks, ice, organic matter or other objectionable material, and shall conform to the following standards:

Electric Primary/Secondary Conduit - 100% by weight shall pass 3/8" sieve.

Electric Service Conduit - Native material shall be free of rocks/clods larger than 4" across their greatest dimension





4.2 Gas Pipe Sand Bedding:

Material shall be free of ice, clay, organic matter or other objectionable material, and shall conform to the following standards:

4.2.1 Gradation per ASTM C136:

SIEVE SIZE 3/8 " # 4 # 50 #100 #200

PERCENT BY WEIGHT PASSING SIEVE

100 90-100 10-40 3-20 0-15

4.2.2 Sand Equivalent per ASTM D2419: 25 minimum.

4.2.3 Plasticity Index per ASTM D4318: Non Plastic.

4.2.4 Moisture - Density per ASTM D1557: Max. +2% of optimum, Min. -5% of optimum.

4.2.5 Any gas pipe sand bedding material retained on a #4 sieve shall not contain more than 30% angular material as described in ASTM D2488. Gas pipe sand bedding material which contains sub angular, sub rounded or rounded material, and conforms to Sections 4.2.1 and 4.2.2 is acceptable.





CRITERIA FOR DESCRIBING ANGULARITY

Angular - Particles have sharp edges and relatively plane sides with unpolished surfaces. Examples include particles which resemble arrowheads.

Sub angular - Particles are similar to angular description but have rounded edges.

Sub rounded - Particles have nearly plane sides but have well-rounded corners and edges.

Rounded - Particles have smoothly curved sides and no edges.

ANGULAR SUBANGULAR

SUBROUNDED ROUNDED

4.3 Type II Class B Aggregate Base, Road Base:

Type II shall be a crusher-run, mineral aggregate free of ice, clay, organic matter, or other objectionable material, and shall conform to the following standards:

4.3.1 Gradation per ASTM C136:

PERCENT BY WEIGHT SIEVE SIZE PASSING SIEVE

1" 100% 3/4" 90-100% # 4 35-65% #16 15-40% #200 2-10%

4.3.2 Liquid Limit per ASTM D423: 35 maximum

4.3.3 Plasticity Index per ASTM D424: Maximum Allowable Plasticity Index (PI) shall be determined by the formula: PI = 15 - (S x 100) where “S” is the percent by weight passing through the #200 sieve.

4.3.4 Resistance R-Value per ASTM D2844: 70 minimum





4.4 Class C Backfill, ¾” Minus clean drain rock:

Class C backfill shall be free of any organic impurities, clay lumps, or unstable substances. The material shall be graded from ¾” to 3/8” conforming to the following gradation:

4.4.1 Gradation per ASTM C136: PERCENT BY WEIGHT

SIEVE SIZE PASSING SIEVE

1" 100% 3/4" 90-100% 3/8” 10-55% #4 0-10%

** 5 % of pan material will be allowed.

4.4.2 Liquid Limit per ASTM D423: 35 maximum

4.3.3 Plasticity Index per ASTM D424: Maximum Allowable Plasticity Index (PI) shall be determined by the formula: PI = 15 - (S x 100) where “S” is the percent by weight passing through the #200 sieve.

4.3.4 Resistance R-Value per ASTM D2844: 70 minimum

4.5 Native Backfill:

Native backfill shall be excavated native granular material free of ice, clay, debris, organic matter, and rocks larger than 4" across their greatest dimension.

4.6 Substitute Material:

Substitute bedding and backfill materials may only be used if prior written approval from NVE is received. In requesting the use of a substitute material, the contractor or customer must submit adequate evidence that the material has been successfully used in similar applications for other utilities or local governmental agencies.





5.0 CONSTRUCTION

5.1 Trench Configuration:

Trench configurations shall conform to NVE’s Trench Excavation Standards (Drawing # TE0001).

5.2 Material Installation/Repair:

Conduits, pipes, and all apparatus shall be handled, installed, and joined in accordance with NVE’s construction standards, and the manufacturer’s specifications or recommendations. The contractor or customer, at his own expense, shall repair or replace any conduits, pipes or appurtenances damaged during bedding and backfill operations.

5.3 Sand Bedding:

Sand bedding material, conforming to sections 4.1 and 4.2, shall be placed in 18" maximum loose lifts and compacted to 90% maximum density per ASTM D1557. The sand bedding shall be installed in a manner that provides firm support under gas facilities and prevents damage to the pipe or pipe coating from equipment or from the backfill material. At a minimum, 12” of sand bedding shall be placed above any gas main, service tee, service laterals, fitting or other gas carrying components before mechanical compaction can begin directly above. All compaction of sand bedding shall be completed using hand-operated, plate-type, vibratory, or other suitable hand-tampers only. Use of large mechanical compaction equipment, such as rollers, sheeps foot, or similar, is prohibited until there is a minimum of 12” compacted sand bedding.

5.4 Backfill:

5.4.1 Public Rights-of-Way - Trenches in established streets, highways, or private paved areas subject to vehicular traffic shall be backfilled with crushed gravel, conforming to section 4.3, and shall be placed in 12" maximum loose lifts and compacted per ASTM D1557. The top two lifts shall be compacted to 95% maximum density and shall extend a minimum of 12" below finish grade. The area above the sand bedding and below 12" from finish grade shall be compacted to 90% maximum density. Developers or the engineer of record are responsible for required compaction tests.

5.4.2 Private Property - trenches in private property and areas not subject to vehicular or pedestrian traffic may be backfilled with native material, conforming to section 4.4 and shall be placed in 12" maximum loose lifts and compacted to 80% maximum density per ASTM D1557.

5.4.3 Utility Easements - Trenches in utility easements which shall be overlain with vaults, transformers, or similar equipment shall be backfilled in accordance with Section 5.4.1.





5.5 Compaction:

All compaction shall be by hand-operated, plate-type, vibratory, or other suitable hand-tampers indamage to conduits, pipes, and any appurtenances. The use of large mechanical compaction

areas not accessible to larger rollers or compactors. Extreme care shall be taken to avoid

equipment is permitted as long as the top of the gas facility is protected with at least 12” of compacted sand bedding. Water densification by inundation or jetting shall not be permitted

without prior written approval from NVE.





5.6 Trench Dewatering:

Where groundwater is encountered, the contractor or customer shall dewater the trench sufficiently to meet the bedding and backfill requirements of sections 5.3 and 5.4. Dewatering shall continue until backfill has progressed to a minimum of two feet above the groundwater level. NVE's inspector(s) may require drain rock (3/4" minus) in addition to the bedding depending on condition of trench bed.

5.7 Finish Operations:

5.7.1 Fine Grading - After backfilling, all trenches except those in existing paved areas shall be graded flush with adjacent finish or subgrade elevations.

5.7.2 Temporary Patching - Unless otherwise specified, all pavement cuts shall be temporarily patched with asphaltic concrete to a minimum depth of 2", with the finish grade 1/2" above the grade of the existing asphalt.

5.7.3 Disposition of Excess Materials - Surplus excavated soils, asphalt pavement, concrete and other debris shall be promptly removed from the jobsite and properly disposed of.

6.0 FIELD SAMPLING AND TESTING

6.1 Materials Testing:

The contractor or customer, at his own expense, shall retain the services of an approved, independent materials testing laboratory to perform the following tests:

6.1.1 Moisture-Density Relations - The sand bedding, crushed gravel, and native backfill materials shall be tested for moisture density relations per ASTM D1557, Method D. Test locations will be randomly selected by NVE.

6.1.2 Density Tests - The sand bedding, crushed gravel, and native backfill materials shall be tested for density per ASTM D1556 or D2922. Test locations will be randomly selected by NVE. The following frequencies shall apply:

Sand Bedding - Tests shall be made at a minimum of one test per lift per 800 lineal feet of trench.

Crushed Gravel Backfill - Tests shall be made at a minimum of one test per lift per 500 lineal feet of trench.

6.1.3 Tests will be reported by specific location: Ex. T-pad 1: sand bedding test at 3' from finish grade.


SUB01X


SECTION 3 STAKING AND TRENCHING TRENCH BEDDING &

BACKFILL Drawn: Eng: Appr: Date:

CD CD 7/14


6.2 Retesting:

If any test conducted per sections 6.1.1 and 6.1.2 fails, the area shall be re-compacted and two additional tests shall be performed. Test locations will be randomly selected by NVE at installer cost.

6.3 Reporting:

The results of all tests shall be submitted to NVE within 24 hours after the completion of the test.

6.4 Exceptions:

At remote locations or for small installations, as determined by NVE, the sampling and testing procedures in section 6.0 may be waived by NVE. Such waiver in no way relieves the contractor or customer from meeting the requirements of the remaining sections of this specification.




SECTION 3: STAKING AND TRENCHING TE0001U

TRENCH AND EXCAVATION STANDARDS

1.0 INDEX

1.0 INDEX 2.0 PURPOSE 3.0 GENERAL 4.0 TRENCHING GUIDELINES 5.0 SAFETY 6.0 ENVIRONMENTAL 7.0 BOX / VAULT / JUNCTION ENCLOSURE INSTALLATION 8.0 PAD INSTALLATION

2.0 PURPOSE

The following Standards provide trench configurations and general requirements and guidelines for trenching and excavation for pipe, conduit, box, and vault installations within NVE service territory.

3.0 GENERAL

The trench is a critical and integral part of the electrical installation. Trenching needs to be undertaken in a workman-like manner and must meet all applicable City, County, State, and Federal Specifications in addition to the requirements of this Standard. In the case of a conflict, the more rigid Specification or Standard shall apply.

4.0 TRENCHING GUIDELINES

4.1 Trenching Configurations

Trench configuration drawings attached as part of this standard are the typical configurations used by NVE. In cases where a typical configuration does not apply, a trench section drawing shall be provided to the contractor or customer showing necessary dimensions and details. The following general rules apply to all trenches:

4.1.1 Backfill: The top 18 inches minimum of all trenches in streets, highways, or other paved areas shall be backfilled with TYPE II base compacted to 95% maximum density in accordance with NVE Specification SUB01X, Section 5.4.1.

4.1.2 Bedding: Compacted sand bedding shall be placed a minimum of 12 inches above and 6 inches below all pipes and conduits.


TE0001U SECTION 3 STAKING AND TRENCHING

TRENCH AND EXCAVATION STANDARDS Drawn: Eng: Appr: Date: Revision: 3 JVV MB DA 10/08 Page 21 of 47


4.1.3 Backfill Option: Either TYPE II or sand bedding material may be used for backfill material in the trench area between 12 inches above the pipe or conduit, and 12 inches below finish grade. In either case, the material shall be compacted to 90% maximum density in accordance with NVE Specification SUB01X, Section 5.4.

4.1.4 Warning Tape: Red Warning tape shall be placed in all trenches at least 18" below finish grade and 12" above NVE pipe, conduit, or cable.

4.1.5 Conduit Installation: Primary conduit shall be installed with a minimum clearance of six inches (6") from the sides of the excavation. Secondary electrical conduit shall maintain a one and one-half inch (1-1/2") clearance from other electrical conduits and a minimum clearance of two inches (2") from the sides of the excavation. All electrical facilities shall be installed with a minimum twelve inches (12") of clearance from any other nonelectric joint trench facility (i.e., gas, water, communications, etc.) See TE0003U Note #16 for other requirements.

4.2 Trench Locations

Trench locations are typically shown relative to street centerlines, right-of-way lines, or property lines in new and existing developments. It is the responsibility of the contractor or the customer to verify that these reference lines are established and accurate. Where such references are unavailable, alignment shall be established by NVE.

4.3 Trench Depth

Depths shown in the standard trench configurations are minimums. For trenches which fall on a side slope, the depth shall be measured from the low side.

4.4 Dewatering

Where ground water is encountered during trench excavation, it shall be the responsibility of the contractor or customer to adequately dewater the trench to provide for safe and convenient installation of pipe or conduit. See Section 6.0 of this standard and SUB01X, Section 5.6, for details.

4.5 Other Utilities/Facilities

4.5.1 Joint Trenches: Joint trench construction shall be by mutual agreement of all parties involved. Coordination of separate utility/ facility installations in a joint trench shall be by the contractor or the customer.

4.5.2 Customer facilities (except fuel / sewage / leach lines) may be installed in a joint trench if (1) approved by all the utilities involved, (2) all clearances are met, and (3) on private property. No customer facilities will be allowed in joint trenches in franchised right-of-





ways. Gas Service line shall not be installed in common trench with water lines on private property

4.5.3 Existing Utilities: Prior to commencement of excavation, the contractor or customer shall telephone the Underground System Alert (USAN) at 811 (or 1-800-227). After existing utilities have been located, extreme caution shall be exercised while excavating in their vicinity. Once exposed, pipes, conduits, and cable shall be shored or supported as necessary to prevent damage. The full cost of repair or replacement of damaged utilities shall be borne by the contractor or customer.

4.6 Installation Procedures

Pipes, conduits, and cables shall be installed in the trench, in accordance with the manufacturer’s recommended procedures, NVE Specifications, and/or Standards and accepted practices.

4.7 Bedding and Backfill

Pipes, conduits, and cables shall be bedded, and trenches backfilled, in accordance with NVE Specification SUB01X. Conduits/trenches should be backfilled the same day as conduit is installed.

5.0 SAFETY

5.1 Responsibility

The contractor or customer shall be responsible for initiating, maintaining, and supervising all safety precautions in connection with the implementation of these standards, and shall comply with all applicable laws, rules and regulations of any public authority relative to the safety of persons or property, or their protection from damage, injury, or loss.

5.2 Shoring or Sloping

When applicable, trenches shall be shored or their sides slopped, in accordance with NVE Standard GI0003U, and Federal Occupational Safety and Health Act (OSHA) requirements.

5.3 Excavated Material

Soil and rock from the trench excavation shall be placed not closer than 24 inches to the edge of the trench.

5.4 Protective Gear

All workmen shall have adequate protective gear including, but not limited to, hard hats, gloves, goggles, respirators, boots, etc.





5.5 Tools and Equipment

All workmen shall be provided with safe, adequate, and well-maintained tools and equipment, including ladders for trench ingress and egress, in accordance with OSHA requirements.

6.0 ENVIRONMENTAL

“In an effort to reduce pollution of Waters of the United States and comply with all requirements as identified in Title 40 Code of Federal Regulations Part 122.26, the following activities will be the sole responsibility of the contractor: Storm water Discharges associated with Construction Activities, Storm water Discharges associated with Small Construction Activities, and Storm water discharges associated with Industrial Activities. All contractors working on behalf of NV Energy or its affiliates will be responsible for the following activities: Filing the Notice of Intent (NOI) with the Nevada Division of Environmental Protection (NDEP), completing a storm water Pollution Prevention Plan (SWPPP), providing SWPPP training for applicable personnel, implementing Best Management Practices (BMPs), fulfilling requirements of monitoring, inspections, documentation, and completion of a Notice of Termination (NOT) upon the conclusion of the project. Any fines, fees, or levies incurred due to incomplete, inadequate, or improper management of the Storm water Program will be the responsibility of the contractor. The contractor must also comply with any and all City and County municipal codes and ordinances which grant authority to prohibit pollutants and waste from being deposited on streets and public places, prohibit non-storm water discharges to the storm drain system, and comply with provisions for protecting hillsides from erosion, sedimentation, or vegetation loss during new development.”

7.0 BOX / VAULT / JUNCTION ENCLOSURE (JE'S) INSTALLATION

7.1 Application

Selection of the correct type of box or vault involves judgment, taking into account the present and future intended traffic use for the area where the box will be located.

a. H-10, Incidental (light) Traffic: For use in sidewalks, pedestrian traffic areas, where box is placed within 3' of parking lots or driveways where light traffic is expected. For use in private noncommercial driveways and parking lots where light vehicular traffic is expected, i.e. driveways in residential subdivisions and parking strips. Incidental Traffic Boxes are not to be installed in traveled areas, i.e. highways, streets, bridges.

b. H-20 Full Vehicular Traffic: For use in streets, driveways and parking lots where heavy vehicular traffic is expected.

c. Non-Traffic: For use in areas where there is no current or future exposure to any type of vehicular traffic.





7.2 Excavation

Excavation for boxes/vaults/JE’s shall be performed by the contractor or customer concurrent with adjacent trench excavation, unless otherwise directed by the NVE Engineer, Planner, or Inspector. Size, depth, and alignment of the excavation shall be as shown on the attached Standard Drawings. Boxes/vaults will be set on a 6" min. base of compacted 3/4" drain rock.

7.3 Dewatering

Where ground water is encountered during excavation, it shall be the responsibility of the contractor or customer to adequately dewater the excavation to provide for safe and convenient installation of the box/vault/JE's. See Section 6.0.

7.4 Installation

7.4.1 General: Boxes/vaults/JE's shall be installed using equipment with adequate load capacity to safely handle the components. No personnel shall be in the excavation during placement. All boxes and vaults shall be set level, squarely aligned with existing or proposed improvements. Exception: the top section/extension/lid may be sloped as stated in Sloped Areas:

7.4.2 Unpaved Areas: Boxes/Vaults

a. Pedestrian Rated: The top section of box/vault will be installed 3" above dirt to accommodate future landscaping. The intent is for the top of box to be 1/2" above final finish grade.

b. Incidental traffic rated: If box is installed within a 3' radius of driveway or driveway approach apron, the box and surrounding material will match the finish grade of driveway and/ or approach apron.

c. H10/H20 traffic rated: Box will be installed 1/2" above finish grade with a 12" X 12" concrete wrap around the top section. Concrete will match the grade at the box and slope away at 1/2" for the 12" (24:1) of concrete wrap where it will match the grade of unpaved material.

7.4.3 Paved Areas: Boxes/Vaults will be installed 1/4" below finish grade with a concrete wrap around the top section of box/vault/extension. Note: The Tahoe area will meet local codes and concrete will be held down and the topping will match road material or local codes.

7.4.4 Sidewalks: Boxes/Vaults will be installed 1/4" above sidewalk if box is installed touching sidewalk and flush if installed in sidewalks.





7.4.5 Sloped Areas: a. Boxes/Vaults will match the finish grade of driveway/approach if placed within a

3' radius of driveway or driveway approach apron.

Box/Vault top section may be sloped and concrete encased with a 12" x 12" section around the top section of box/vault. Reference TE0020U Sloped Box Detail for clarification.

The top section of box may be cut to slope, but cut will be limited to the bottom 6" of the top section. The gap or seam between the top section and the first extension will be filled with grout either fine or coarse in accordance with ASTM C-476 with minimum compression strength of 2000 PSI at 28 days.

b. Boxes/Vaults set outside of the 3' radius in unpaved areas of slopes of 6:1 (10°) or less will be set to match finish grade to accommodate future landscaping. The intent is for the top of box to be at least 1/2"above final finish grade.

Alternate method: Level a 3' radius area around the box. For vaults level an area covering a 3' radius on 3 sides and 8' on street or operability side. Note: box/vault will be set 3" above finish grade to accommodate future landscaping. The intent is for the top of the box to be 1/2" above final finish grade.

c. Boxes/Vaults set in areas with slopes above 3:1 (20º) will be installed per the following criteria:

Box will be set level and protected from slopes with a retaining wall supplied and installed by the applicant.

The wall will extend at least 3" above cut slope.

Front area will be clear of obstacles for at least 3' for boxes and 10' for vaults. This is for operability and working space.

Reference TE0040U for retaining wall specifications.

Boxes can be set with the provisions listed above in Sloped Areas "7.4.5a".

d. Inspector and "on-site" contractor may field determine the proper installation based on customer needs while providing adequate protection for NVE facilities.

e. Hill holders, (preformed fiberglass or concrete) will be acceptable applications in slopes of 3:1 or less.





7.5 Bedding and Backfill Boxes/vaults/JE's shall be bedded and the surrounding excavation backfilled, in accordance with NVE Specification SUB01X. Class C (3/4") drain rock may be substituted for sand bedding and backfilling of vaults.

8.0 PAD INSTALLATION

8.1 Excavation

Excavation for pads shall be performed by the contractor or customer concurrent with adjacent trench excavation, unless otherwise directed by the NVE Engineer or Inspector. Size, depth, and alignment of the excavation shall be as shown on Standard Drawings.

8.2 Dewatering

Where ground water is encountered during excavation, it shall be the responsibility of the contractor or customer to adequately dewater the excavation to provide for safe and convenient installation of the pads. See Section 6.0.

8.3 Installation

Transformer and switch pads shall be installed using equipment with adequate load capacity to safely handle the components. All pads and enclosures shall be set level, squarely aligned with the base at existing or proposed finish grade. The 10' area in front of all pads (equipment doors) shall be level.

8.4 Bedding and Backfill

Pads shall be bedded with 8" - 12" Type II sub-base, depths as indicated on Standard Drawings, at 95% compaction and the surrounding excavation backfilled, in accordance with NVE Specification SUB01X.

9.0 STREET LIGHT INSTALLATION

9.1 Excavation Excavation for streetlights shall be performed by the contractor or customer concurrent with adjacent trench excavation, unless otherwise directed by the NVE Engineer or Inspector. Size, depth, and alignment or the excavation shall be shown on standard drawings See SLB02U and SLB12U, Standards Volume 17, Section 6. For imbedded poles, see sonotube specification shown on the Work Order Drawing. Note: Sonotube only, NO PVC water or sewer pipe can be used.





9.2 Dewatering Where ground water is encountered during excavation, it shall be the responsibility of the contractor or customer to adequately dewater the excavation to provide for safe and convenient installation of the streetlight substructure, sonotube, or precast base. See Section 6.0.

9.3 Installation Precast streetlight bases shall be installed using equipment with adequate load capacity to safely handle the components. All bases shall be set 3" - 6" above proposed finish grade with bolt pattern aligned for proper arm direction as shown on work order drawings, typically 90º off curb line.

9.4 Bedding and Backfill Streetlights, sonotubes and precast bases shall be bedded with Type II subbase for the full depth of component at 90% compaction surrounding the component at a 2' radius in accordance with NVE Specification SUB01X.

INSTALLATION TABLE FOR STREET LIGHT POLES

DESCRIPTION Embedded

30' Steel Embedded

42' Steel 30' Bolted

Base *

Embedded 23' Square Decorative

Embedded 20' Round Concrete

Embedded 34' Round Concrete

Fluted Steel Decorative

STOCK # 28-0830 28-0840 28-0800 28-0750 28-0745 28-0740 28-1106 & 08

POLE INSTALLATION

DEPTH 5' 7' 6' 4'-3" 3'-7" 5'-3" 3'

SONOTUBE DIAMETER

16" 16" N/A 16" 16" 24" 16"

SONOTUBE DEPTH 5 FT 7 FT N/A 5 FT 5 FT 5 FT 43"

SLOT LOCATION FROM

TOP OF TUBE 3'-0" 3'-0" N/A 1'-6" 1'-6" 1'-6"

Detail On Next Page

* For Reference Only Not For New Construction See SLB 02U Section 6 Volume 17 for Base Detail





Embedded Decorative Steel Pole Installation For 17' and 19’ Fluted Decorative Steel Poles.





TYPICAL TRENCH DETAILS

ALL TRENCHES MUST BE APPROVED BY NVE FIELD REPRESENTATIVE PRIOR TO ANY CONSTRUCTION.

1. ALL TRENCHES MUST CONFORM TO THE LATEST APPLICABLE NVE, CITY, COUNTY, STATE, FEDERAL, AND OSHA SPECIFICATIONS AND REQUIREMENTS. IN THE CASE OF CONFLICT, THE MORE RIGID SPECIFICATION OR STANDARD SHALL APPLY. Refer to TE0001U, Section 6.0 for environmental requirements.

2. NATIVE MATERIAL requires 80% compaction. Refer to SUB01X, Section 5.4.2.

3. SAND requires 90% compaction.

4. TYPE II aggregate base requires 95% compaction.

5. THE TOP 18" of all trenches in ESTABLISHED HIGHWAYS, STREETS, and other PAVED AREAS subject to traffic, shall be backfilled with TYPE II base.

6. THE TOP 18" of all trenches on PRIVATE PROPERTY, (not subject to traffic) may be backfilled with NATIVE MATERIAL. Refer to SUB01X, Section 5.4.2.

7. NO CONDUITS SHALL BE INSTALLED ABOVE OR PARALLEL TO GAS LINES.

8. NONMETALLIC YELLOW WARNING TAPE will be 6" wide, marked "NVE Utilities Buried Below" and shall be placed in ALL TRENCHES at least 18" below finish grade and 12" above NVE facilities.

9. ELECTRIC PRIMARY CONDUIT must be 6" minimum from side of trench. If more than one conduit is installed, maintain a 1-1/2" separation from each electric conduit.

10. ELECTRIC SECONDARY/SERVICE CONDUIT must be 2" minimum from side of trench. If more than one conduit is installed, maintain a 1-1/2" separation from each electric conduit.

11. ELECTRIC PRIMARY OR ANY JOINT TRENCH SHALL HAVE A MINIMUM TRENCH DEPTH OF 60", and maintain a minimum 12" radial clearance from all other utilities (See Pages 1 and 2). Exception: DB REFURBISHMENT, AND WATER.

12. PRIMARY ELECTRIC AND GAS WILL NOT OCCUPY THE SAME COMMON TRENCH and will be separated by virgin soil during parallel installations.



TYPICAL TRENCH DETAILS Drawn: Eng: Appr: Date: Revision: 5 BSP MB DA 4/13 Page 31 of 47


13. ELECTRIC ONLY CONDUIT, SERVICE / SECONDARY shall have a minimum trench depth of 48". a. Exceptions/deviations to these trench requirements may be appropriate. Any deviation must be

approved by the appropriate local authority if applicable, and the NVE Inspector

14. GAS shall be 12" minimum from side of trench.

15. GAS SHALL HAVE MINIMUM DEPTH TO TOP OF PIPE OF: 36" in State Highways; 30" in streets or roadways; 24" in private property; and maintain a minimum 12" radial clearance from all other utilities. Exceptions: SEWER AND STORM DRAIN

16. Sewer (SS) AND STORM DRAIN (SD) must maintain a 2’ radial clearance from NVE Gas facilities and/or maintain a 1’ radial clearance from NVE Electric Facilities. Any exceptions/deviations from these requirements must be approved by the appropriate NVE Engineering Department. Note: Conflicts of Sewer or Storm Drain crossings shall be handled according to 12-a above or 17 below.

17. SS/SD Sanitary Sewer/Storm Drain shall not occupy the same common trench as gas or electric and will be separated by virgin soil during parallel installations.

18. ELECTRIC MUST MAINTAIN 1' RADIAL CLEARANCE FROM ALL FACILITIES. If 1' radial clearance cannot be obtained, electric conduit must be concrete encased for at least 18" each side of conflicting utility, or electric facilities will be protected by means of rigid galvanized steel conduit. This will be done by using pvc to rigid steel transition fittings with rigid steel extending at least 4' each side of conflict.

Note: NVE's Inspector will provide determination of application to resolve conflict.

EXCEPTION: WATER MAINS WILL MAINTAIN 2' RADIAL CLEARANCE FROM ALL ELECTRIC FACILITIES.

19. Whenever possible, locate hydrant on opposite side of street from electric main trench. Refer to TE0045U for details.

20. If field changes are required, all changes must be approved by a NVE Inspector.





TYPICAL SERVICE TRENCH DETAILS





TYPICAL MAIN TRENCH DETAILS





CONSTRUCTION NOTES: A. See TE0003U for typical trench

details. B. See SUB01X for trench bedding

and backfill specs. C. Electric to pass under Gas mains

with min. 1' separation. D. Applicant to determine and stake

finish grade. E. Comm/cable TV in conduit is

allowed to cross over non-parallel gas services.

F. Service stubs to cross main trench

and over electric whenever possible. G. Conflict to facilities will be handled

according to TE0003U 17 and 12-a. H. Electric may cross over any utility, when a minimum cover of, 48" for primary and, 36" for secondary / service, can be

maintained and a 12" minimum radial separations to all other facilities can be maintained. Note: gas must be above electric facilities and water needs a min of 24" radial separation.

I. Gas and water to adjust depth of service to coincide with their zone at main trench depth measured from finish grade.

VOLUME 15 – ENGINEERING AND CONSTRUCTION STANDARD

Drawn: JVV

Eng: MB

Appr: DA

Date: 5/05

SECTION 3 STAKING AND TRENCHING STREET CROSSING AND UTILITIES LOCATION

DETAIL

TE0004U



REFURBISHMENT TRENCH

DETAIL


SECTION 3 STAKING AND TRENCHING TE0005U REFURBISHMENT TRENCH DETAIL

Drawn:

JL

Eng:

JF

Appr:

SJ

Date:

5/04 (ABANDON DIRECT BURIAL) Revision: 6

Page 36 of 47


GENERAL UTILITY LOCATION DETAILS REFER TO PAGES 36 - 44 FOR SPECIFIC DETAILS


TE0020U SECTION 3 STAKING AND TRENCHING EQUIPMENT LOCATION DETAILS –

RESIDENTIAL Drawn: Eng: Appr: Date: Revision: 3 JVV MB DA 10/08 Page 37 of 47


PERFERRED SECONDARY BOX LOCATION DETAIL BOXES WILL BE PLACED PARALLEL TO FRONT PROPERTY LINE



Drawn: Eng: Appr: Date: Revision: 3 RESIDENTIAL JVV MB DA 10/08 Page 38 of 47


ALTERNATE SECONDARY BOX LOCATION DETAIL

BOXES WILL BE PLACED PERPENDICULAR TO FRONT PROPERTY LINE


SECTION 3 STAKING AND TRENCHING TE0020U

Drawn:

JVV

Eng:

MB

Appr:

DA

Date:

10/08

EQUIPMENT LOCATION DETAILS – RESIDENTIAL Revision: 3

Page 39 of 47


TYPICAL SPLICE BOX PLAN VIEW



Drawn:

JVV

Eng:

MB

Appr:

DA

Date:

10/08


Page 41 of 47




Drawn:

JVV

Eng:

MB

Appr:

DA

Date:

10/08


Page 42 of 47


TYPICAL SPLICE BOX INSTALLATION Example: Boxes in sloped areas of 6:1 (10°) in unpaved non-traffic/pedestrian applications: NOTES: A. The gap or seam between the top section and the first extension will be filled with grout, either fine or

coarse in accordance with ASTM C-476 with minimum compression strength of 2000 PSI at 28 days. A-1. The top section may be cut to match slope but cut will be limited to the bottom 6" of the top section.

B. A 12" X 12" concrete wrap will be installed around the box top section, 6" above and below pivot point or seam.

C. The inside surface will be troweled to a smooth “finished" surface. D. All excess concrete will be removed from the box cavity. General Notes: • Leave 4"-12" of conduit above bottom of deepest extension. A 1/4" flat polyester pull line w/ sequential

footage markings and a minimum 400 lb. breaking strength, to be installed in each conduit by customer. See CD0001U, Section 20 of Vol. 17, Conduit Section.

• Ends of all conduits will be capped or plugged with a temporary plug as referenced in CD0001U, Section 12.0, of Volume 17, Conduit Section.

• All conduits shall be placed at same end of box at a minimum of 4" from box side wall. • Box will be placed in relationship to "finished” grade as referenced in TE0001U, Section 6.4.





TYPICAL SPLICE BOX INSTALLATION Example: Boxes in H10/H20 Unpaved Area Applications: NOTES: A. Box will be installed 1/2" above finished grade with a 12" x 12" concrete wrap around the top section. B. Concrete will match the top of box and slope away at 1/2" per 12" (24:1) where it will match the grade of

unpaved material. Note: Exception in the snow removal areas where the box will be installed a minimum of 1/2" below the finish grade to reduce exposure to snow removal equipment.

C. All excess concrete will be removed from the box cavity. General Notes: • Leave 4"-12" of conduit above bottom of deepest extension. A 1/4" flat polyester pull line w/ sequential



• All conduits shall be placed at same end of box at a minimum of 4" from box side wall.





TYPICAL SPLICE BOX INSTALLATION Example:Boxes in H10 Paved areas “Residential Driveways”: Notes: A. Box will be installed 1/4", (snow areas 1/2") below finished grade with a 12" x 12" concrete wrap around

the top section of box. B. The depth of concrete driveway may contribute to the 12" wrap as shown below. C. For asphalt applications the 12" x 12" wrap will be held down and the top application will match road

material in accordance with local codes. D. All excess concrete will be removed from the box cavity. General Notes: • Leave 4"-12" of conduit above bottom of deepest extension. A 1/4" flat polyester pull line w/ sequential



• All conduits shall be placed at same end of box at a minimum of 4" from box side wall. • Box will be placed in relationship to “finished” grade as referenced in TE0001U, Section 6.4.





PRIMARY VAULT LOCATION DETAIL





TRANSFORMER PAD LOCATION DETAIL FRONT LOT LINE CONSTRUCTION



Drawn:

JVV

Eng:

MB

Appr:

DA

Date:

10/08


Page 47 of 47

VOLUME 15

Section 4: Gas Construction Specifications

SECTION 4: GAS CONSTRUCTION SPECIFICATIONS GCSXXG

SECTION 4 GAS CONSTRUCTION SPECIFICATIONS

CONTENTS

GAS CONSTRUCTION SPECIFICATIONS-GCS01G 1.0 MATERIALS TO BE FURNISHED...................................................................................................................... PAGE 2

2.0 DESCRIPTION OF PIPE....................................................................................................................................... PAGE 2

A) COATED STEEL PIPE

B) POLYETHYLENE PIPE

C) BARE STEEL CASING

3.0 PIPELINE CLEANING.......................................................................................................................................... PAGE 4

4.0 COATED STEEL PIPE CONSTRUCTION......................................................................................................... PAGE 4

A) PIPELINE WELDING

B) TESTING OF WELDERS

C) WELDING PROCEDURES

D) TESTING OF WELDS

E) PIPELINE STRAINS

F) REPAIR OF STEEL PIPE

G) PROTECTIVE COATING

H) CATHODIC PROTECTION INSTALLATIONS

I) TAPPING AND LINE STOPPING

5.0 POLYETHYLENE GAS PIPE CONSTRUCTION ............................................................................................. PAGE 8

A) APPLICATIONS FOR PE PIPE

B) PE PIPELINE FUSION

C) TESTING OF HEATING FUSION

PERSONNEL

D) HEAT FUSION PROCEDURES

E) TESTING OF HEAT FUSIONS

F) PE PIPELINE STRAINS

G) REPAIR OF PE PIPE

H) STORAGE AND HANDLING

OF PE PIPE

I) LOCATING "TRACER" WIRE

J) TRANSITION JOINTS

K) SHIELDING PE PIPE FROM HEAT

L) REMOVAL OF STATIC ELECTRICITY

M) HOT TAPPING& SQUEEZE-OFFS

6 BARE STEEL CASING CONSTRUCTION ........................................................................................................ PAGE 13

7 PIPELINE TESTING.............................................................................................................................................. PAGE 13

A) GENERAL REQUIREMENTS

B) ENVIRONMENTAL PROTECTIONAND SAFETY REQUIREMENTS

C) SPECIAL REQUIREMENTS

D) TEST REQUIREMENTS

E) CONTRACTOR REQUIREMENTS

F) COMPANY RESPONSIBILITIES

8 PURGING STEEL AND PE PIPE......................................................................................................................... PAGE 17

9 BORING/SLEEVING ............................................................................................................................................. PAGE 17

10 GUIDELINES FOR BRANCHING OF EXISTING GAS SERVICES .............................................................. PAGE 21

11 GAS MAIN OFFSET REQUIREMENTS............................................................................................................. PAGE 23

VOLUME 15 – ENGINEERING & CONSTRUCTION STANDARDS

GCSXXG SECTION 4:

GAS CONSTRUCTION SPECIFICATIONS Drawn: Eng: Appr: Date: Revision: 1

CLD CLD 5/14 INDEX Page 1 of 24

SECTION 4: GAS CONSTRUCTION SPECIFICATIONS GCSXXG


GCSXXG SECTION 4:


CLD CLD 5/14 INDEX Page 2 of 24

SECTION 4: GAS CONSTRUCTION SPECIFICATIONS GCS01G

GAS CONSTRUCTION SPECIFICATIONS

1.0 MATERIALS TO BE FURNISHED

All materials shall meet the Company's specifications and shall be purchased from approved

manufacturers. The following materials shall be furnished as part of the proposed improvement unless

specified in the drawings or specifications:

Polyethylene Pipe (PE)

Coated Steel Pipe (XTC or FBE)

Valves

Valve Boxes and Conductor Pipe

Fittings (Elbows, Tees, Reducers, etc.)

Tracer Wire (PE Pipe)

Metallic/Nonmetallic Warning Tape

Pressure Test Supplies (Soap Solution, Gauges, etc.)

Bare Steel Casings with Spacers, End Seals and Vents

Cathodic Protection and Insulating Materials

Miscellaneous Items (Nuts, Bolts, Gaskets, etc.)

2.0 DESCRIPTION OF PIPE

A. Coated Steel Pipe

All coated steel (XTC or FBE) gas pipe shall be API 5L Specification, plain end, beveled, bare

inside, and extruded polyolefin or fusion bonded epoxy coated per the Company's material

specifications and shall be purchased from approved manufacturers.

NOMINAL

SIZE

O.D.

INCHES

WALL

THICKNESS

INCHES

COATING THICKNESS MILS

FBE XTC

LENGTH

FEET

BARE

POUNDS PER

FOOT

3/4" 1.050 0.113 14-16 25 20 1.13

1" 1.315 0.133 14-16 25 20 1.68

1-1/4" 1.660 0.140 14-16 25 20 2.27

1-1/2" 1.900 0.145 14-16 25 20 2.72

2" 2.375 0.154 14-16 30 20 3.66

4" 4.500 0.237 14-16 35 40 10.80

8" 8.625 0.188 14-16 40 40 16.96

12" 12.750 0.219 14-16 40 40 29.34

18" 18.000 0.375 14-16 40 40 70.65

*Updated to reflect current material stock catalogue 1/23/2019


GCS01G SECTION 4:


CLD CLD 11/15 Page 3 of 24


B. Polyethylene Pipe

All Polyethylene (PE) gas pipe shall be manufactured according to ASTM D-2513 and shall be

iron pipe sized, PE3408/4710 high density pipe per the company's material specifications and

shall be purchased from approved manufacturers.

NOMINAL

SIZESDR

AVERAGE

O.D.

INCHES

MINIMUM

WALL

THICKNESS

COIL

LENGTH

FEET

WEIGHT

POUNDS/

FEET

1/2" 7 0.625 0.090 1000 0.07

3/4" 11 1.050 0.095 500 0.12

1" 11 1.315 0.119 500 0.19

1-1/4" 11 1.660 0.151 500 0.31

2" 11 2.375 0.216 500 0.64

4" 11 4.500 0.409 40* 2.30

6" 11 6.625 0.602 40* 4.97

* These are straight lengths, coil pipe may be allowed on a case by case basis subject to

approval by NVE.

C. Bare Steel Casing

All bare steel casing pipe shall be electric weld pipe, bare inside and outside.

O.D.

INCHES

WALL

THICKNESS

INCHES

LENGTH

FEET

WEIGHT

POUNDS

PER FOOT

4" 0.188 20 7.9

8" 0.188 20 14.3

12" 0.188 20 24.8

16" 0.250 20 47.0

If so desired, the Company may specify pipe lengths different than those shown above. Should

this be the case, the lengths specified shall be indicated on the project construction drawings.


GCS01G SECTION 4:




3.0 PIPELINE CLEANING

All open ends of pipe lowered into a trench shall be properly closed to prevent entry of any foreign matter.

At the end of each working day, the open ends of the pipeline shall be properly closed to prevent foreign

matter from entering the pipe. Should foreign matter enter the pipeline due to lack of proper care by the

Contractor, the Inspector shall require the Contractor to clean the line by swabbing or pigging at the

Contractor's expense and to the satisfaction of the Inspector.

If required by the Inspector, the interior length of every pipe shall be swabbed before it is welded or fused

to the adjoining length to ensure that it is free of dirt or obstructions of any kind.

4.0 COATED STEEL PIPE CONSTRUCTION

A. Pipeline Welding

The steel pipeline shall be welded together in accordance with Section 8 of NV Energy’s Operations and Maintenance Manual. The Installer shall also install all valves, fittings and

appurtenances into the pipeline by approved methods.

All welds shall meet each and every requirement set forth in the Section 8 of NV Energy’s

Operations and Maintenance Manual.

Only welders certified per the Company's welding procedures shall perform any welding on the

pipeline. Only proper welding equipment in good working order shall be used.

All welders shall have successfully completed a qualification test performed annually according

to the Company's welding procedures for each specific welding procedure. Additionally, the

welders shall have proof of qualifications and shall be required to present such proof when

requested.

A welder may retain certification by having one or more welds tested and found acceptable at least

twice each calendar year not to exceed 7 ½ months. If a welder's certification expires, he must

successfully complete a qualification test before being allowed to weld.

B. Testing of Welders

The Company reserves the right to test any welder the Contractor intends to use on a project before

the welder is allowed to work on the project. If any weld fails to meet the Company specifications,

the Company reserves the right to disqualify the welder from performing any welding on the

project.

The Contractor shall be responsible for all expenses incurred in the testing of welders and any

expenses resulting from the failure of any welder to qualify.


GCS01G SECTION 4:




C. Welding Procedures

If the ends of the pipe are bent or damaged, the damaged or bent section shall be removed prior to

welding so that proper alignment can be obtained.

Prior to performing the weld, every length of pipe shall be aligned so that the longitudinal seam

shall be located on the upper surface of the pipe within 45 degrees of the vertical. Successive

lengths of pipe shall be rotated to avoid aligning longitudinal seams.

The Contractor shall use line-up clamps on pipe diameters three (3) inches and larger to ensure

proper alignment of the lengths of pipe. Line-up clamps shall be left in place until the first pass

or root bead is at least 50% completed in equally spaced segments.

Unless otherwise specified, change in pipe direction shall be made with an elbow. A miter shall

only be used to deflect the pipe 11 degree or less. Miter joints shall be made by cutting equal

amounts from both pipe ends. The mitered pipe ends must butt together properly. No more than

two miter joints are allowed for each deflection. The miter joints shall not be closer than one pipe

diameter from each other as measured from the crotch of each joint.

Unless otherwise specified, the Contractor shall also field fabricate all pipeline fittings necessary

for tie-ins to existing mains. All field-fabricated fittings shall be constructed to the satisfaction of

the Inspector.

Unless appropriate protection is provided, the Contractor shall not perform any weld when the

quality of the weld could be impaired by the prevailing weather conditions.

D. Testing of Welds

All welds will be inspected by means of visual, destructive or nondestructive methods, or any

combination thereof as determined by the Company. NVE will require that approximately 25%

of all welds on steel mains in excess of 1000 feet be radiographically (x-ray) tested. The Company

reserves the right to order sections of the line, including a weld, to be cut out and tested at any

time.


GCS01G SECTION 4:



SECTION 4: GAS CONSTRUCTION SPECIFICATIONS

E.

F.

G.

GCS01G

The Contractor shall immediately remove the designated section and deliver it to the Inspector. If

any test fails in the weld metal, the entire weld shall be considered as failing to meet the Company

specification. The Contractor shall prepare all welds for test at his own expense and to the

satisfaction of the Inspector.

The Contractor shall, at his own expense, remove and/or replace any weld failing to meet the

Company specifications. For each weld tested that meets the Company's specifications, the

Company shall pay the Contractor a predetermined amount. The Company shall determine the

type and number of weld tests to be performed.

Pipeline Strains

Wherever the Inspector has reason to believe there is a strain on a section of pipeline that has been

installed in the trench, the Contractor shall sever the pipe. If the two ends of the pipe pull apart,

the Contractor shall, at his own expense, reconnect the two ends with no strain upon the pipeline

and wrap the new field joint to the satisfaction of the Inspector. If the ends of the pipe do not pull

apart, the Company shall assume the expense of severing the pipe, rewelding the pipe together,

and wrapping the field joint.

Repair of Steel Pipe

All imperfections or damages which may impair the serviceability of the pipe shall be repaired by

the Contractor at his own expense in accordance with the method prescribed by the Inspector.

Protective Coating

The shop-applied protective coating of each and every length of steel pipe shall be tested by the

Contractor with a high potential Holiday Detector.

All coatings, wrappings and patches applied by the Contractor shall also be subject to test with a

high potential Holiday Detector as determined by the Inspector. Any defects discovered by this

test shall be repaired by the Contractor at his own expense and to the satisfaction of the Inspector.

If the protective coating of any pipe is damaged, it shall be repaired by the Contractor at his own

expense and to the satisfaction of the Inspector.

After the lengths of pipe have been welded together and the welds tested and accepted, the ends of

the protective coating shall be trimmed and any damaged coating removed. The bare section of

the pipe, including the weld, shall be cleaned of all rust, scale, dirt or other foreign material. An

approved coating shall be applied to the satisfaction of the Inspector.


GCS01G SECTION 4:




The Company may require the use of thermofit shrinkable sleeves on field joints and coating

repairs. The Contractor shall install the sleeve on the pipe prior to performing the joint weld. After

proper completion of testing, center the sleeve over the weld and apply a soft flame, per the

manufacturer's requirements, back and forth across the sleeve causing it to shrink over the weld.

The Contractor shall install all sleeves to the satisfaction of the Inspector and shall remove and

replace, at his own expense, all sleeves not properly installed.

H. Cathodic Protection Installations

All necessary cathodic protection equipment including but not limited to magnesium anodes,

insulation fittings and test stations shall be installed by the Contractor in accordance with the

standard cathodic protection installation details included as a part of these specifications or as

shown on the drawings and to the satisfaction of the Inspector.

I. Tapping and Line Stopping

Any welding required for hot tapping or line stopping of steel pipe shall be performed by a certified

welder using the Company's approved welding procedures.

Any personnel performing any work on any lines that carry or will carry gas must be qualified

under the Company's Anti-Drug Policy for Contractors.

Hot tapping and line stopping equipment must be used in accordance with the manufacturer's

guidelines and instruction booklets. Tapping and line stopping shall only be performed by

qualified personnel using the proper equipment and procedures.


GCS01G SECTION 4:




5.0 POLYETHYLENE (PE) GAS PIPE CONSTRUCTION

A. Applications for PE Pipe

Polyethylene (PE) gas pipe may be used in gas distribution systems in the following applications:

Direct burial of mains and services.

Main or service replacements by insert or direct burial methods.

Polyethylene (PE) gas pipe shall not be used in the following applications:

Systems designed to operate in excess of 100 psig.

In above ground or exposed locations such as boxes, pits and vaults, unless it is for

temporary emergency situations.

As above ground riser material to a meter set unless it is part of an approved manufactured

riser.

In locations where the PE pipe would be subjected to temperatures in excess of 73 degrees

F.

B. PE Pipeline Fusion

The Contractor shall join polyethylene pipe and all valves, fittings and other appurtenances by

means of approved Company heat fusion joining procedures. In order to produce an acceptable

butt fusion, lateral movement of the pipe is required. If lateral movement cannot be achieved, an

electrofusion coupling must be used. Only approved types of compression and mechanical fittings

shall be installed. Threaded, mitered or solvent-welded joints are not permitted.

All fusions shall meet each and every requirement set forth under these specifications and shall be

to the satisfaction of the Inspector.

Only personnel certified per the Company's heat fusion procedures shall perform any heat fusions

on the pipeline. Only proper fusion equipment in good working order shall be used.

All heat fusion personnel shall have successfully completed a qualification test performed annually

according to the Company's plastic heat fusion procedures for each specific fusion procedure. The

heat fusion personnel shall have proof of qualifications and shall be required to present proof when

requested.


GCS01G SECTION 4:




The heat fusion personnel must have performed qualified fusions for the Company within the last

year. If he/she has not, he/she must recertify for each specific heat fusion procedure that has lapsed

before being permitted to heat fuse.

C. Testing of Heat Fusion Personnel

The Company reserves the right to test any heat fusion personnel the Contractor intends to use on

a project before the heat fuser is allowed to work on the project. If any fusion fails to meet the

Company specifications, the Company reserves the right to disqualify the heat fuser from

performing any fusions on the project.

D. Heat Fusion Procedures

The most common reason for fusion failure is impurities in the fusion area, i.e., oil from human

hands, dirt, water, PE material from the facing process. The Contractor shall ensure that the pipe

and fittings are free from any impurities.

The Contractor shall also:

Properly align and/or face the pipe ends and fittings with the proper equipment before

performing the heat fusion process.

Establish the proper melt bead for the fusion application.

Allow adequate cooling time after the fusion before handling the pipe.

Failure to follow the Company's approved plastic heat fusion procedures to the satisfaction of the

Inspector will result in rejection of the fusion.

Unless appropriate protection is provided, the Contractor shall not perform any heat fusions when

the quality of the fusions could be impaired by the prevailing weather conditions.

E. Testing of Heat Fusions

Heat fusion procedures and joints will be visually inspected as determined by the Company. The

Contractor shall cut out any rejected fusions and perform the work again at his own expense and

to the satisfaction of the Inspector.

Although other methods of evaluating heat fusion joints exist, i.e., tensile, destructive, and

ultrasonic, these methods will not be recognized by the Company as tests for determining the

acceptability or unacceptability of fusion joints.


GCS01G SECTION 4:




PE Pipeline Strains

All heat fusion joints shall be installed in straight alignment and carefully backfilled to prevent

differential settlement.

The pipe must be installed so it will be free of tensile loading. PE pipe will expand as the

temperature increases. The Contractor shall take special precautions, especially on warm days, to

eliminate tensile loading in the pipe after it cools. Cut the pipe long so that it will be under

compression when the final tie-in is made. Where clearance from other facilities is not a problem,

"snake" the pipe in the trench to provide excess length. For casing inserts or where clearance from

other facilities must be provided, cool the pipe to ground temperature before making the final tie-

in.

The pipe must be fully supported along its entire length. The Contractor shall backfill the trench

after the pipe has cooled to ground temperature in order to minimize tensile stress due to thermal

contraction.

The pipe shall be installed in the trench so that there are no bends with a radius of less than twenty

five (25) times the pipe diameter except for ½” pipe which can have a radius of twenty (20) times

the pipe diameter. There shall be no fusion joints within three (3) feet of any bend.

NOMINAL PIPE SIZE

MINIMUM BEND

RADIUS

1/2" 3/4"

10" 18.75"

1" 1-1/4" 2" 4" 6"

5" 31.25" 50" 100" 150"

Repair of PE Pipe

All imperfections or damages which may impair the serviceability of the pipe shall be repaired by

the Contractor at his own expense in accordance with the method prescribed by the Inspector.

Temporary repairs can be made using a full encirclement stainless steel clamp for puncture or

longitudinal-type damage. Compression couplings with insert stiffeners can be used for temporary

repairs to completely severed pipe. Permanent repairs are the Contractor's responsibility and shall

be made as soon as practical and to the satisfaction of the Company.

Pipe with punctures or gouges which are greater than 10% of the pipe wall thickness, or pipe with

any other extensive damage shall be removed and replaced by the Contractor at his own expense.

If, in any situation, it appears that there was pulling or movement of the pipe or that damage could

have occurred at any other locations along the pipe, the suspected area shall be bar hole leak tested

with a Combustible Gas Indicator (CGI). The Contractor shall, at his own expense, expose the

pipe at any suspected damage area.

Storage and Handling of PE Pipe

F.

G.

H.


GCS01G SECTION 4:




The pipe shall be stored so as to prevent the possibility of the material being damaged by crushing,

gouging, piercing or other mechanical damage or being exposed to excessive heat, harmful

chemicals or fire. The pipe must be stacked per the manufacturer's guidelines. If the pipe is to be

stored for any length of time, it should be placed under cover for protection from the sun.

The pipe shall be handled so as to eliminate the possibility of damage during loading and unloading

operations. During transport, the pipe must be supported and secured so as to minimize movement.

During unloading, the Contractor shall lift the pipe from the truck to the ground. Do not drop or

throw the pipe.

During stringing of the pipe along the trench, the pipe must not be rolled or pulled over sharp

objects or rough surfaces.

After each handling operation, the Contractor shall carefully inspect the pipe for kinks, cuts,

gouges, punctures or any other imperfections. Any defective or damaged pipe shall be rejected or

repaired by the Contractor at his own expense and to the satisfaction of the Inspector.

I. Locating "Tracer" Wire

The Contractor shall install insulated locating wire with the pipe. The wire shall be #14 Copper

Clad Steel Core with 30 mils HDPE insulation. The wire shall be taped to the pipe at intervals not

exceeding twenty feet and at pipeline directional changes such as bends, 45's, and 90's.

All wire splices shall be made using a split bolt connector wrapped with aquaseal and electrical

tape.

The Contractor shall install a three (3) pound anode at the end of each below ground wire for

cathodic protection of the locating wire.

J. Transition Joints

Steel to Polyethylene transitions must be made by using transition fittings approved by the

Company. The Contractor shall not shorten the fitting and shall adequately support the PE pipe

adjacent to the transition. If the transition fitting is a butt weld type, the Contractor shall wrap the

fitting with a wet cloth from the midpoint of the steel section. The cloth shall be kept wet during

the welding process and shall be left on the fitting until the steel pipe is cool to the touch. No

welding or heating shall be done on the body of the transition.

Fusions joining different pipe densities or manufacturers shall be performed utilizing an

electrofusion method.


GCS01G SECTION 4:



SECTION 4: GAS CONSTRUCTION SPECIFICATIONS

K.

L.

M.

GCS01G

Shielding PE Pipe From Heat

The Contractor shall protect PE pipe from all forms and sources of heat, such as welding, by

covering it with wet rags. When any welding is done in the vicinity of PE pipe, sparks must be

directed away from the PE pipe and must be prevented from entering the pipe.

Removal of Static Electricity

Due to the nonconductive nature of PE pipe, significant static electrical charges may build up on

the pipe during handling and installation. The Contractor shall remove all static electrical charges

by grounding the PE pipe whenever it is squeezed off and during hot tapping, purging or

emergency repair operations.

Dampen the entire working area. Use a water and liquid dishwashing detergent solution to wet

the rags. Wrap the exposed pipe with wet rags. Keep the rags and working area wet during the

entire operation.

Any metal tools used for cutting, tapping, or squeezing off the pipe shall be grounded using

appropriate and approved methods. Squeeze-off tools shall be kept in tight contact with the wet

rags.

Persons entering the work area shall ground themselves before touching the pipe by contacting the

wet earth. Once a tool and worker are grounded, removal of the worker's hands from the tool may

allow buildup of static charges. The worker must re-ground himself before touching the tool.

Hot Tapping and Squeeze-Offs

Any heat fusion required for hot tapping PE pipe shall be performed by certified heat fusion

personnel using the Company's approved heat fusion procedures.

Any personnel performing any work on any lines that carry or will carry gas must be qualified

under the Company's Anti-Drug Policy for Contractors.

Hot tapping and squeeze-off equipment must be used in accordance with the manufacturer's

guidelines and instruction booklets. Hot tapping and squeeze-offs shall only be performed by

qualified personnel using the proper equipment and procedures. The Contractor shall furnish the

hot tapping and squeeze-off equipment and shall ensure that such equipment is in good working

order.

After a squeeze-off tool is removed, the location shall be marked by means of yellow colored tape

or with a repair fitting to ensure that a future squeeze-off is not repeated within 18" of the same

location.


GCS01G SECTION 4:




6.0 BARE STEEL CASING CONSTRUCTION

All necessary casings, casing appurtenances and venting equipment shall be installed in accordance with

the drawings and specifications and to the satisfaction of the Inspector.

Casing pipe containing polyethylene gas mains or services shall not be squeezed or deformed except in

an emergency.

7.0 PIPELINE TESTING

A. General Requirements

The testing procedures in this specification are for pipelines that will be operated at or below 90

psig and below 30% of the specified minimum yield strength of the pipeline (30% SMYS).

For pipelines operated above 90 psig or above 30% SMYS, a written plan developed by the

Company describing the testing procedures will be followed.

Unless otherwise specified, no person may operate a new segment of pipeline or return to service

a segment of pipeline that has been relocated or replaced until:

It has been tested in accordance with this specification to substantiate the proposed

maximum allowable operating pressure.

All leaks have been located and eliminated.

All testing has been completed, and the results accepted by the Inspector.

The test medium must be air or inert gas as determined by the Company that is:

Compatible with the material of which the pipeline is constructed.

Free of all sedimentary materials.

Nonflammable.


GCS01G SECTION 4:




B. Environmental Protection and Safety Requirements

In conducting tests under this specification, the Contractor shall ensure that every reasonable

precaution is taken to protect its' employees and the general public during the testing. The

Contractor shall take all practicable steps to keep persons not working on the testing operation

outside of the testing area until the pressure is reduced to or below the proposed maximum

allowable operating pressure.

The Contractor shall ensure that the test medium is disposed of in a manner that will minimize

damage to the environment.

C. Special Requirements

The Company reserves the right to require special leak testing procedures as it deems necessary,

i.e., extended test durations or different test pressures. The Contractor shall conduct such special

test procedures as requested.

Polyethylene pipe material must not exceed 100 degree F during the leak testing operation.

Each joint needed to tie in a tested segment of pipeline to the existing gas distribution system is

excluded from the test requirements in this specification. The Contractor shall soap test and

pressure test each tie in joint at the operating pressure.

If feasible, each service line connection to the main must be tested per the requirements in this

specification. If not feasible, the Contractor shall soap test and pressure test each service line

connection at the operating pressure.

Prior to reinstatement, each disconnected service line must be leak tested per the requirements in

this specification from the point of disconnect to the service line valve. Testing need not be

performed on any part of the service line which maintained operating pressure during the work.

If a reinstated service line is located in one of the Company's 40 psig pressure zones, the Contractor

shall leak test the line at 60 psig instead of 135 psig.


GCS01G SECTION 4:




D. Test Requirements

Unless otherwise specified, the Contractor shall leak test each segment of pipeline at 135 psig.

Minimum test durations, based upon size and length of pipe, are provided in the following table:

MINIMUM TEST DURATION

10 MINUTE 2 HOURS 24 HOURS

1/2 " PIPEALL

LENGTHSNA NA

3/4 " PIPEALL

LENGTHSNA NA

1 " PIPEALL

LENGTHSNA NA

1 1/4 " PIPEALL

LENGTHSNA NA

2 " PIPE 0-240' 240-720' OVER 720'

4 " PIPE 0-60' 60-180' OVER 180'

6 " PIPE 0-30' 30-90' OVER 90'

8 " PIPE NA 0-60' OVER 60'

12 " PIPE NA 0-30' OVER 30'

When pressure testing 2", 4", or 6" PE pipe; total volume less than 5 cubic feet can be tested for a

minimum of 10 minutes, total volume between 5 and 15 cubic feet must be tested for a minimum

of 2 hours, and total volume over 15 cubic feet will require a minimum 24 hour test.

Under some circumstances, the duration of the test can be reduced or increased at the discretion of

NVE personnel, additional non-destructive testing (x-ray) may be required.


GCS01G SECTION 4:




E. Contractor Requirements

The Contractor shall provide all necessary labor, material and equipment for making the pressure

test including proper compression equipment to produce a gauge pressure of 135 psig. As each

section is completed and the ends of the pipe properly closed, the test medium shall be forced into

the pipeline until a gauge pressure of 135 psig is achieved.

The Contractor shall locate and repair all leaks discovered in the pipeline during testing. Any

welds or fusions displaying leaks shall be considered as failing to meet the Company

specifications, and the Contractor shall, at his own expense, remove the defective work and

perform a new weld or fusion to the satisfaction of the Inspector.

Whenever it is necessary to cut out a weld or fusion and the two ends of pipe cannot be brought

together conveniently or without damage to the pipe, the Contractor shall, at his own expense,

install a short piece of pre tested pipe per these specifications and to the satisfaction of the

Inspector.

F. Company's Responsibilities

The Company will provide, install and remove the pressure recording device to document the leak

test. The Company will make and retain for the useful life of the pipeline all required information

of each leak test performed.


GCS01G SECTION 4:




8.0 PURGING STEEL AND PE PIPE

Air trapped and traveling in a gas distribution system can create a combustible mixture. Combined with

static electricity an extremely hazardous situation can develop. Although the Contractor shall provide all

appropriated purging equipment such as risers, purge stacks, and grounding tools, the purging itself must

be performed by an NV Energy Inspector. Under no circumstances will any Contractor personnel be

allowed to operate valves, pressurize lines with gas, or purge lines without prior written approval from an

NV Energy representative.

When purging, the NV Energy Inspector shall stack the riser to vent above the worker's heads. Ground

the purging stack above and below the gas cock insulator by means of a #12 or heavier gauge wire. Do

not purge into a bell hole, and do not allow gas to draft into buildings or other areas where it may become

confined and create a combustible mixture.

If the improvement is to be supplied gas from more than one source, only one tie-in shall be made until

all air has been purged from the entire improvement.

9.0 BORING/SLEEVING

A. GENERAL INFORMATION

Description: These standards provide general requirements and guidelines for service replacement

insertion and new construction boring and sleeve installations within NVE's service territory.

Jurisdiction: All applicable City, County, State and Federal specifications must be met in addition

to the requirements of this standard. In the case of conflict, the more rigid specification or standard

shall apply.

B. GUIDELINES

Application:

Bore installations where native material does not meet the requirements of sand

specification for gas pipe per Section 3, Staking and Trenching, SUB01X.

To protect gas carrier pipe when minimum separation from other facilities cannot be

maintained.


GCS01G SECTION 4:




To facilitate installation of new or replacement gas facilities, such as street, driveway and

sidewalk crossings.

Boring shall not be used in a multiple utility installation.

Note: Steel pipe must not be inserted into polyethylene sleeve.

Boring Methods:

Directional bores shall be guided by using locating equipment that displays the angle and

depth of the drill head.

Non-directional bores shall be guided by aiming, alignment and leveling.

All receiving pits, regardless of method, shall not be backfilled until they have been

approved by the NVE gas inspector. Any bores rejected by the inspector shall not be

utilized and must be supported and /or sealed by appropriate methods to prevent settlement.

Inspection holes may be required by the inspector at his/her discretion to determine actual

bore path.

Asphalt heave caused by bore tool shall be removed and excavated to a minimum depth of

18" below finish grade and compacted. Backfill of the affected area must be completed

with base material meeting the requirements of Section 3, Staking and Trenching,

SUB01X.

Existing Utilities: Prior to and for the duration of any boring operation, all existing underground

utilities and/or structures shall be located and exposed to prevent accidental contact and to ensure

minimum separation per Section 3, Staking and Trenching, TE0003 are maintained.

**Additional measures are to be taken to ensure sewer laterals and other known untraceable

utilities are positively located prior to boring activities. If untraceable utilities are not

positively located prior to boring and are not exposed for visual inspection other means

such as internal camera inspection shall be performed.

Bore Locations: Bore locations shall be that of trench locations. These locations are typically

shown relative to street centerlines, right of way lines, or property lines in new and existing

developments. It is the responsibility of the contractor or the customer to verify that these reference

lines are established and are accurate. Where such reference lines are unavailable, alignment shall

be established by NVE.


GCS01G SECTION 4:




Bore Depth: Depths shall meet the minimum requirements per Section 3, Staking and Trenching,

TE0003. For bores that fall on a side slope, the depth shall be measured from the low side.

Maximum depth for service on private property shall not exceed 36" unless the location of existing

utilities or underground structures would require it.

Sleeve Material: Sleeve pipe for new installations of gas facilities shall be yellow medium density

polyethylene SDR 11. At no time shall sleeve pipe be utilized as the gas carrying pipe.

Dewatering: Where ground water is encountered during pit and bell hole excavation, it shall be the

responsibility of the contractor or customer to adequately dewater the trench to prevent the

entrance of water into the sleeve or carrier pipe and provide for safe and convenient installation of

both the sleeve and carrier pipe.

Installations:

Prior to pulling in the carrier pipe, the sleeve ends must be reamed to remove burrs and

the pipe must be free of dirt, rocks, water, or any other debris that may cause damage to

the outside wall of the carrier pipe.

Carrier pipe must be hand guided into the sleeve pipe to prevent pipe wall damage or undue

stress on the carrier pipe.

Carrier pipe ends must be sealed to prevent debris remaining in the sleeve from entering

the carrier pipe.

Care must be taken when using coiled sleeve and carrier pipe to prevent undue stress on

the carrier pipe. Coiled sleeve pipe must not exit the bore with the natural coil bend in the

opposite direction of the carrier pipe. Bore entrance/exit pits must be extended along the

length of the bore to the point where undue stress is eliminated.

All sleeve ends shall be sealed with tape similar to 3M #50 (tape used in wrapping steel

pipe in NVE's system). Taped ends shall not be taped so as to create a gas tight seal.

When sleeving terminates at or near a building, the upstream end of the sleeve nearest the

downstream side of the curb valve must be sealed with a cold shrink seal. Cold shrink seal

shall then be taped in each end.


GCS01G SECTION 4:




Tracer Wire:

All polyethylene gas carrying pipe must be locatable by the use of tracer wire.

Tracer wire shall be #14 Copper Clad Steel as specified in Section 5 of these Gas

Construction Specifications.

Tracer wire shall be installed inside the sleeve and pulled in with the carrier pipe.

Backfill:

All trenches bore and receiving pits, service tie-ins and riser bell holes shall be backfilled

in accordance with Section 3, Staking and Trenching, SUB01X. Sections of carrier pipe

not contained inside the sleeve such as service taps and inspection points shall be supported

by compacted sand up to the horizontal axis of the pipe prior to the first lift of backfill

material. The pipe shall be supported to prevent vertical movement of the pipe.

Sleeve pipe may be backfilled with electric/water sand per Section 3, Staking and

Trenching, SUB01X. However, this sand must not extend beyond the sleeve and overrun

onto the carrier.

Documentation: All sections and type of sleeve pipe must be documented on the appropriate gas

main and /or service cards. Sleeves shall be measured for their entire length and the ends shall be

measured from the nearest fitting (service tee, curb valves, risers, etc.) and documented on the

notes section of the card.

Sleeve Removal: To prevent damage to the carrier pipe and tracer wire, mechanical or electric

cutters must have stops that will not allow 100% cutting of sleeve pipe wall. Once the sleeve is

removed, the carrier and tracer wire must be inspected to ensure that no damage has occurred. Any

damaged sections must be repaired or replaced.


GCS01G SECTION 4:




10.0 GUIDELINES FOR BRANCHING OFF EXISTING GAS SERVICES

Provided below are conditions that must be met and guidelines that must be followed when considering

the possibility of branching off of an existing gas service line:

1. NVE's Utility Designer shall verify that the capacity of the existing service line will adequately

handle the existing load plus the projected new load combined.

2. NVE's Utility Designer shall verify that all necessary easement concerns have been addressed.

3. Each design must be verified and approved by NVE's Design & Construction Facilitator before

committing to customer.

4. When branching off of an existing steel gas service the following Compatible Unit Numbers or

Drawing Numbers should be utilized:

BRANCHING OFF EXISTING STEEL GAS SERVICES

EXISTING STEEL

SVC SIZE

NEW PE BRANCH

SIZEDRAWING NUMBER COMMENTS

3/4" OR LARGER 3/4" PE STI19G

REMOVE CV & BOX

FROM COMPATIBLE

UNIT *

1" OR LARGER 1" PE STI20G

REMOVE CV & BOX

FROM COMPATIBLE

UNIT *

1 1/4" OR LARGER 1 1/4" PE STI21G

REMOVE CV & BOX

FROM COMPATIBLE

UNIT *


NO CHANGE

REQUIRED

* Disruption of service should be considered before removing curb valve and box.


GCS01G SECTION 4:




5. When branching off of an existing PE gas service the following Compatible Unit

Numbers or Drawing Numbers should be utilized:

BRANCHING OFF EXISTING PE GAS SERVICES

EXISTING PE SVC

SIZE

NEW PE BRANCH

SIZEDRAWING NUMBER COMMENTS

3/4" OR LARGER 3/4" PE STI05G

CHANGE TAPPING

TEE TO STD TEE,

REMOVE CV & BOX

*


CHANGE TAPPING

TEE TO STD TEE ,

REMOVE CV & BOX

1 1/4" OR LARGER 1 1/4" PE STI07G

CHANGE TEE ,

REMOVE CV & BOX

*


NO CHANGE

REQUIRED

* Disruption of service should be considered before removing curb valve and box.

6. After construction, NVE's Inspector shall prepare the following documentation:

A. A new service card for the new service must be made.

B. A new revised service card for the existing service must be made. (Staple the old existing

service card to the back of the new revised service card.)

C. The above mentioned cards shall be turned in to Gas Distribution Mapping.

7 Gas Distribution Mapping shall perform the following tasks:

A. Log each of these cases where existing services are branched.

B. Change the Gas Main and Service Inventory as necessary.


GCS01G SECTION 4:




11.0 GAS MAIN OFFSET REQUIREMENTS Whenever a gas main must be installed under a conflicting utility, storm drain, sewer conduit, reinforced

concrete box, or ditch, and the necessary depth from top of pipe to finish grade exceeds five feet, NV

Energy may require that 45 or 90 degree offsets be installed on each side of the conflicting area.


GCS01G SECTION 4:



VOLUME 15

Section 5: Gas Construction Drawings

SECTION 5: GAS CONSTRUCTION DRAWINGS GCPI-CB

SECTION 5 GAS CONSTRUCTION DRAWINGS

TABLE OF CONTENTS

CATEGORY TAB

CATHODIC PROTECTION INSTALLATIONS ............................................................................. GCPI

DISTRIBUTION BRANCH INSTALLATIONS .............................................................................. GDBI

DISTRIBUTION CAP INSTALLATIONS ....................................................................................... GDCI

DISTRIBUTION LINE STOPPERS ................................................................................................. GDLS

DISTRIBUTION TRANSITION FITTINGS.................................................................................... GDTF

DISTRIBUTION TAP INSTALLATIONS ....................................................................................... GDTI

DISTRIBUTION VALVE INSTALLATIONS ................................................................................. GDVI

GAS METER INSTALLATIONS ..................................................................................................... GGMI

SERVICE TAP INSTALLATIONS .................................................................................................. GSTI

MISCELLANEOUS GAS CHARTS................................................................................................. GMGC


GCPI-CB CATHODIC PROTECTION INSTALLATIONS TABLE OF CONTENTS

Drawn: Eng: Appr: Date: Revision: 10/2016 CB CLD CLD 9/2014 Page 1 of 1

VOLUME 15

Section 6: Gas Metering Standards

SECTION 6: GAS METERING STANDARDS GM0020G

SECTION 6 GAS METERING STANDARDS

GENERAL GUIDELINES-GM0020G PURPOSE............................................................................................................................................................................... PAGE 2

POLICY.................................................................................................................................................................................. PAGE 2

UTILITY DESIGN REQUIREMENTS............................................................................................................................... PAGE 2

GAS METERING DIVERSIFICATION............................................................................................................................. PAGE 3

LOCATION REQUIREMENTS .......................................................................................................................................... PAGE 5

RESIDENTIAL SERVICE AND METER LOCATIONS ................................................................................................ PAGE 9

COMMERCIAL SERVICE METER LOCATIONS ........................................................................................................ PAGE 10

MOBILE AND MANUFACTURED HOME METER LOCATIONS ............................................................................. PAGE 10

GAS SERVICE AND METER DESIGN-GM0035G GENERAL.............................................................................................................................................................................. PAGE 11

EXCESS FLOW VALVES.................................................................................................................................................... PAGE 11

METER, MAIN, AND SERVICE LINE SIZING............................................................................................................... PAGE 12

GAS METER SELECTION TABLE................................................................................................................................... PAGE 13

GAS METER GUARD POST DETAIL-GM0040G GAS METER GUARD POST DETAIL .............................................................................................................................. PAGE 15

RESIDENTIAL METERING-250 CFH METERS ............................................................................................................ PAGE 16

COMMERCIAL METERING-REGULATED UPSTREAM OF METER...................................................................... PAGE 17

VOLUME 15 – ENGINEERING & CONSTRUCTION STANDARD

GM0020G SECTION 6: GAS METERING STANDARDS

INDEX Drawn: Eng: Appr: Date: Revision: 3

JB SB SB 10/25/18 Page 1 of 17


GENERAL STANDARDS

PURPOSE

To ensure proper design and placement of gas meters in safe, uniform, and accessible locations.

POLICY

Gas meter assemblies and locations shall meet all the requirements of this section, and the requirements

of Section 5 (meter set drawings GGMI). Exceptions to this are considered non-standard and require Gas

Engineering approval.

UTILITY DESIGN REQUIREMENTS

The NV Energy Utility Design Administrator will gather customer load, equipment types, project scope

and location information to determine appropriate main/service line sizing and metering configuration.

The NV Energy Utility Design Administrator can work with Gas Engineering to assist in the initial

planning stage. The planning request will be routed to Gas Planning, Gas Engineering and then to Gas

Metering for planning and metering recommendations as required.

A Gas Distribution Planning Request form shall be submitted to Gas Planning & Gas Engineering by the

project’s Utility Design Administrator, for the following types of projects: 1. All gas main extensions or modifications to existing mains.

2. All gas service line installations or meter improvements exceeding 2,600 cubic feet per hour

demand.

3. Delivery pressures higher than 7 inch Water Column (7 inch WC or 0.25 psig) require

completion of a Non-Standard Gas Pressure Request Form. This form is available on our

webpage:

a. For multi-family non-standard pressure request forms,

https://www.nvenergy.com/publish/content/dam/nvenergy/brochures_arch/account-

services/building-and-new-construction/need-gas-service/service-meter-info/Multi-

Family-Non-Standard-Pressure-Request.pdf

b. For commercial non-standard pressure request forms,

https://www.nvenergy.com/publish/content/dam/nvenergy/brochures_arch/account-

services/building-and-new-construction/need-gas-service/service-meter-

info/Commercial-Non-Standard-Pressure-Request.pdf

4. Gas meters that are considered non-standard or custom (larger than 2M).

5. Excessive service lengths (over 400 feet).



Drawn: Eng: Appr: Date: Revision: 3

JB SB SB 10/25/18 GENERAL GUIDELINES

Page 2 of 17

https://www.nvenergy.com/publish/content/dam/nvenergy/brochures_arch/account-services/building-and-new-construction/need-gas-service/service-meter-info/Multi-Family-Non-Standard-Pressure-Request.pdf



https://www.nvenergy.com/publish/content/dam/nvenergy/brochures_arch/account-services/building-and-new-construction/need-gas-service/service-meter-info/Commercial-Non-Standard-Pressure-Request.pdf




After determining the customer load and appliance information, utilize the Gas Metering Diversification

section below to determine actual customer loads for design.

Typical conversion factors are shown below:

CFH or SCFH MCFH BTUH MBH MMBTU THERM

Cubic Feet per Hour or

Std Cubic Feet per Hour

1,000 Cubic

Feet per Hour

British Thermal

Units per Hour

1,000 British Thermal

Units per Hour

1,000,000 British

Thermal Units per Hour

100,000

BTU’s

1 .001 1,000 1 .001 .01

100 .1 100,000 100 .1 1

1,000 1 1,000,000 1,000 1 10

*Assumed 1 cfh = 1000 BTU

GAS METERING DIVERSIFICATION

Load diversification is performed to ensure that main and/or service line sizing and metering capacity is

not oversized for the application since the operation of all gas appliances, at maximum load, rarely

occurs simultaneously. However, the meter capacity should never be less than the largest single load.

The diversification factors and calculations below are for reference and may be adjusted based upon

unique or special conditions that arise.

Residential Diversification

The following lists the factors for residential load diversification:

APPLIANCE TYPE FACTOR

Furnace 1

Range/Oven 0.1

Tank Water Heater 0.5

Tankless Water Heater 1

Dryer 0.2

Fireplace 0.2

Pool/Spa Heater (year-round) 0.8

Pool/Spa Heater (summer only) 0.2

Standby Generator 0.8

Outdoor Grill/Fire pit 0.1

Driveway/Sidewalk Heating 0.8





Page 3 of 17


Example Calculation:

Identify the largest single undiversified load (tankless water heater) from the applicant, remove it from

the diversification table. Multiply the remaining appliance quantity by the manufacturer appliance

BTU’s/hr, then by the factor. Then sum the diversified load and add it to the largest single load for total

diversified load.

APPLIANCE TYPE QTY UNDIVERSIFIED

LOAD

[BTU/hr]

FACTOR DIVERSIFIED

LOAD

[BTU/hr]

Furnace 1 100,000 1 100,000

Range/Oven 1 60,000 0.1 6,000

Tankless Water Heater 1 140,000 1 Largest Load

140,000

Dryer 1 20,000 0.2 4,000

Fireplace 2 25,000 0.2 10,000

Total 260,000 BTU/hr

260 CFH

Small Commercial Diversification

The following lists the factors for commercial load diversification, up to 2,600 CFH:

APPLIANCE TYPE FACTOR

Furnace/Unit Heaters 1

Boilers 0.8

Range/Cooking Equipment

(primary/secondary)*

0.8/0.2

Tank Water Heater 0.5

Tankless Water Heater 1

Dryer (primary/secondary)* 1/0.2

Fireplace 0.2

Pool/Spa Heater (year-round) 0.8

Pool/Spa Heater (summer only) 0.2

Standby Generator 0.8

Outdoor Grill/Fire pit 0.6

Other process using gas varies

* Primary is commercial operation using the gas for production or manufacturing

purposes. Secondary is if the equipment is not primary to the commercial operation.

For example, a restaurant uses ranges/cooking equipment as primary.





Page 4 of 17


Example Calculation:

Identify the largest single undiversified load from the applicant (Range/Cooking Equipment), remove it

from the diversification table. Multiply the remaining appliance quantity by the manufacturer appliance

BTU’s/hr, then by the factor. Then sum the diversified load and add it to the largest single load for total

diversified load.

APPLIANCE TYPE QTY UNDIVERSIFIED

LOAD

[BTU/hr]

FACTOR DIVERSIFIED

LOAD

[BTU/hr]

Furnace/Unit Heaters 2 150,000 1 300,000

Range/Cooking Equipment

(Restaurant-primary)

3 120,000 0.8 Largest Load

360,000

Dryer (secondary) 1 25,000 0.2 5,000

Outdoor Grill/Fire pit 2 30,000 0.6 36,000

Total 701,000

701 CFH

Large Commercial Diversification

Commercial loads that exceed 2,600 CFH are considered non-standard and require evaluation on a case-

by-case basis. The factors above may be used as a reference only.

Large commercial meters (rotary or turbine) shall be designed to account for minimum and maximum

expected load. If the minimum load is 5% or less of the maximum meter load, the designer will supply

two meters to accurately account for gas usage.

LOCATION REQUIREMENTS

NV Energy's Utility Design Administrator shall select a gas meter location that is in accordance with

these standards to ensure safety, uniformity, and accessibility. The gas meter shall be located on the

building to be served and shall be placed either on the sides or the front of the building from the street

that the building faces.

A meter placed on the side of a building shall be placed within the first six (6) feet. A meter may be

placed on the front of a building if requested by the applicant. For typical gas meter locations refer to

Drawing # GM0020G of this section.

Any request for a meter location in a non-standard location must receive prior approval from Gas

Engineering and the Gas Service Center.

In applying dimensions as specified below, they shall be considered to be the distance from the meter

assembly regulator vent.

The meter set assembly shall:

1. Be installed on the building it serves.

2. Be installed in a well-ventilated and readily accessible location.





Page 5 of 17


3. Be installed to ensure free access from the street. Fences shall not block free access to

the assembly.

4. Have the house line installed by the applicant prior to the meter being set. The house line

should be stubbed out four (4) inches from the wall and shall have a ninety (90) degree

black iron elbow (consider malleable iron fitting) with inside iron pipe size threads for

house lines of two (2) inch and smaller. Larger size house lines shall have welded

elbows.

5. Have a minimum obstacle clearance of one (1) foot on each side and three (3) feet

directly in front of the assembly. Shrubs, bushes, trees, etc., shall not be planted where

they will interfere with access to the assembly.

6. Have a minimum of three (3) foot radial distance from the regulator vent to any opening

into a building, such as opening windows and doors, foundation vents, crawl spaces, etc.,

located within the first floor of a building. Non-opening fixed windows are exempt from

this requirement. See figure below for specific clearance requirements.

7. Have a minimum of three (3) foot radial distance from any electric meter or sub panel.

8. Have a minimum of three (3) foot radial distance from any source of ignition such as air

intakes for sealed combustion chamber-type applications, gas appliances vents,

fireplaces, electric motors or switches, etc., located within the first floor of a building.

9. Have a minimum of five (5) feet radial distance from any mechanical draft air inlet

systems such as evaporative coolers, fresh air make-up systems, etc.

10. Have no mechanical fittings or controls such as water faucets, sewer clean-outs,

automatic sprinkler systems controls, etc., located behind or under the assembly.

11. Not be located under stairways, fire exits, or inside any engine, boiler, heater, or

electrical equipment room.

12. Be protected by the applicant with steel guard posts when the assembly is located in an

area subject to vehicular traffic. Refer to gas meter guard post detail #GM0040G for post

installation specifications.

13. Have a fence or other suitable protective enclosure around the assembly for larger meter

sets when required by NVE. The applicant shall provide the fence or enclosure. NVE

will provide a lock and lock box for the enclosure.

14. Not encroach on city or county alley right-of-way. If installed in an alley, the assembly

shall be recessed into the building. See item #18.

15. Have no surfacing material such as concrete, asphalt, brick etc., within a two (2) inch

radial distance of the gas service riser.

16. Not become a hazard to pedestrian traffic. It is the customer’s responsibility to ensure gas meter locations do not become an obstacle.





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17. Have all house lines on a manifold meter assembly identified by the applicant with

stamped metal tags showing the address for each house line as they appear on the

building.

18. Meet the following requirements for a recessed assembly:

A. The riser or assembly cannot be installed within the walls or basement of a

building.

B. Applicant shall provide a six (6) inch open channel for the service riser

installation.

C. The recess shall have a floor at a minimum of one (1) foot above finish grade.

D. Recess doors shall be fully louvered and hinged with hasp and snap provided by

the applicant. NV Energy will provide a lock and lock box if doors are to be

locked.

E. Obstructions such as dumpsters, recycling bins, etc., shall not block recessed

meter set assemblies, and meter set assemblies shall be protected from these types

of hazards.





Page 7 of 17


ACCEPTABLE METER CLEARANCES





Page 8 of 17


RESIDENTIAL SERVICE METER LOCATIONS

For branch services where homes are staggered, the Utility Design Administrator should run the gas

service 30" off property line on the property to the left side (ref. TE0020U, Section 3). In cases where

this cannot or has not happened, the extension of the service line to the second home should cross the

property line at 90 degrees, turn and run 30" off property line on the property of the longer run.





Page 9 of 17


COMMERCIAL SERVICE METER LOCATIONS

Commercial gas meter locations must be coordinated through one of NV Energy's Utility Administrator

and must comply with the General Guidelines of this section. When customers request a gas meter

location behind a building that location will be limited to the fact that NV Energy's service line will run

around one corner of a building only, and the length of that service line shall be minimized.

Commercial gas service lines that parallel to a building must maintain a minimum five (5) foot clearance

from the structure.

MOBILE AND MANUFACTURED HOME METER LOCATIONS

Mobile and manufactured homes shall follow the same requirements of this standard. The addition of a

meter post, as shown below, will be the responsiblility of the customer. Deviation from this design will

require approval from Gas Engineering and Gas Service. Consideration shall be taken to reduce the

length of the customer flex line.





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GAS SERVICE AND METER DESIGN

GENERAL

The following general guidelines must be followed when designing services and metering

configurations:

Preference for standard main and service line locations for locating, maintenance, and

damage prevention.

No creation of primary customer owned yard lines (COYL) absent justifying circumstances.

Justifying circumstances include but are not limited to, unique field conditions, property

rights, security/access issues, and large residential, commercial, or industrial customers

where installation of a primary COYL is required to initiate service. Justifying

circumstances do not include instances of customer convenience, cost avoidance, or to avoid

current Utility installation standards.

Minimize the amount of installed underground facilities.

EXCESS FLOW VALVES (EFV)

If services meet the criteria below, excess flow valves (EFVs) will be installed on all new services.

Excess flow valves, up to 2,600 SCFH, are also known as combination valves or combo valves, where

the EFV doubles as a curb stop valve. To qualify for an EFV, the service must meet ALL of the

following criteria:

The service line is on a system that has an operating pressure of 10 psig or greater throughout

the year.

Is a permanent service line and meets one of the following criteria:

o A single service line to one single family residence (SFR);

o A branched service line to two SFRs installed concurrently with the primary SFR service

line (i.e., a single EFV may be installed to protect both service lines);

o A new branch service line installed off a previously installed SFR service line that does

not contain an EFV;

o Single family and multifamily residences with known customer loads not exceeding the

largest approved EFV in the NV Energy catalog, at time of service installation based on

installed meter capacity;

o A single, small commercial customer served by a single service line with a known

customer load not exceeding the largest approved EFV in the NV Energy catalog, at the

time of meter installation, based on installed meter capacity.




JB SB SB 10/25/18 GAS SERVICE AND METER DESIGN

Page 11 of 17


Service lines are designed to have excess flow valves (EFV) installed, wherever possible.

EXCESS FLOW

VALVE

CAPACITY

(scfh)

STOCK

NUMBER

1/2" Combo Valve 800 43-1991

3/4" Combo Valve 800 43-2001

1" Combo Valve 1800 43-2011

1-1/4" Combo Valve 2600 43-2021

Multiple meter manifolds will be utilized when conditions allow, but will not be used when

the capacity of the services exceed EFV ratings.

Appropriately sized EFVs may be installed on existing service lines of a different size. For

example, a 1” EFV, rated at 1,800 scfh may be installed on an existing ¾” service line so

long as the existing service line’s total length will allow sufficient flow to trigger the EFV.

METER, MAIN, AND SERVICE LINE SIZING

Gas Engineering will design and size gas mains using a computational flow model for existing and

future gas needs. Utility Design Administrators will size services considering the following factors:

1. Branched service versus single service.

2. Single meter versus multi-meter manifold.

3. Diversified load for each service.

4. EFV requirements.

The Utility Design Administrator shall use the following steps to size a Single Meter gas service:

1. Diversify load per GM0020G.

2. Select meter based on diversified load and Table 1 below.

3. Service, riser, and EFV size is shown for each corresponding meter in Table 1.

4. Verify the undiversified load does not exceed the EFV rating.

The Utility Design Administrator shall use the following steps to size a Multi-meter Manifold gas

service:

1. Diversity Load, for each service, per GM0020G.

2. Select each meter based on diversified load and Table 1 below.

3. If all meters are the same for the multi-meter manifold, use Table 2, Table 3, Table 4 or Table 5.

4. Service, riser, and EFV size is shown for each corresponding meter combination in Table 2,

Table 3, Table 4 or Table 5.

5. Verify the total undiversified load for all meters does not exceed the EFV rating.





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Contact Gas Engineering if the following conditions exist:

1. Multi-meter manifold that requires different sized meters (e.g. one AL-425 and one AC-630).

2. Undiversified load exceeds the EFV rating.

3. The Compatible Unit states “Custom”.

4. Customer requests non-standard delivery pressure for any meter in a manifold.

GAS METER SELECTION TABLE

Using the total diversification load calculated, select the appropriate meter size(s) for the application:

Table 1: Single Gas Meter Table

Table 2: 250 CFH Multi-meter Manifold

Configuration

Compatible

Unit

Riser/Service

Size [in.] EFV Size

[SCFH]

1 Meter (Branch Service) GGMI-AAA 3/4" 800

2 Meter GGMI-ABA 3/4" 800

3 Meter GGMI-ACB 1" 1,800

4 Meter GGMI-ADB 1" 1,800

4 Meter Stacked GGMI-AEB 1" 1,800

5 Meter GGMI-AFB 1" 1,800

6 Meter GGMI-AGC 1-1/4" 2,600

6 Meter Stacked GGMI-AHC 1-1/4" 2,600

7 Meter GGMI-AIC 1-1/4" 2,600

8 Meter GGMI-AJC 1-1/4" +

8 Meter Stacked GGMI-AKC 1-1/4" +





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10 Meter Stacked GGMI-ALC 1-1/4" +

12 Meter Stacked GGMI-AMC 1-1/4" +

14 Meter Stacked GGMI-ANC 1-1/4" +

16 Meter Stacked GGMI-AOC 1-1/4" +

(+) EFV not Available

Table 3: 425CFH Multi-Meter Manifold

Configuration

Compatible

Unit

Riser/Service

Size [in.] EFV Size

[SCFH]

2 Meter Custom 1" 1,800

3 Meter Custom 1-1/4" 2,600


4 Meter Stacked Custom 1-1/4" 2,600

Table 4: 630 CFH Multi-Meter Manifold

Configuration

Compatible

Unit

Riser/Service

Size [in.] EFV Size

[SCFH]

2 Meter Custom 1" 1,800


Table 5: 1000 CFH Multi-Meter Manifold

Compatible Riser/Service EFV Size

Configuration Unit Size [in.] [SCFH]

2 Meter Custom 1-1/4" 2600

Services that require a meter set larger than 2M are considered non-standard and their application will be

subject to approval by Gas Engineering and Gas Service. Services that require a meter set larger than

11M and/or have a delivery pressure greater than 5 psig are considered custom and the design will

provided by Gas Engineering.





Page 14 of 17

SECTION 6: GAS METERING GUIDELINES GM0040G

GAS METER GUARD POST DETAIL


GM0040G SECTION 6: GAS METERING GUIDELINES


JB SB SB 10/25/18 GAS METER GUARD POST DETAIL

Page 15 of 17


RESIDENTIAL METERING - 250 CFH METERS

BOLLARD DIMENSIONS

COMPATIBLE

UNIT

# OF

METERS

DIMENSIONS # OF

POSTS A B

GGMI-AAA 1 3' 0" 2

GGMI-ABA 2 4' 0" 2

GGMI-ACB 3 5' 0" 2' 6" 3

GGMI-ADB 4 6' 0" 3' 0" 3

GGMI-AEB 4 STACKED 4' 0" 2

GGMI-AFB 5 7' 0" 3' 6" 3

GGMI-AGC 6 8' 0" 4' 0" 3

GGMI-AHC 6 STACKED 5' 0" 2' 6" 3

GGMI-AIC 7 9' 0" 3' 4

GGMI-AJC 8 10' 0" 3' 4" 4

GGMI-AKC 8 STACKED 6' 0" 3' 3

GGMI-ALC 10 7' 0" 3' 6" 3

GGMI-AMC 12 8' 0" 4' 0" 3

GGMI-ANC 14 9' 0" 3' 4

GGMI-AOC 16 10' 0" 3' 4" 4





Page 16 of 17


COMMERCIAL METERING - REGULATED UPSTREAM OF METER

BOLLARD DIMENSIONS

COMPATIBLE

UNIT METER SIZE # OF METERS

DIMENSIONS # OF

POSTS A B

GGMI-BAB 425 CFH 1 METER 3' 10" 2

CUSTOM 425 CFH 2 METER 6' 8" 3' 4" 3

CUSTOM 425 CFH 3 METER 9' 6" 3' 2" 4

CUSTOM 425 CFH 4 METER 12' 4" 4' 1" 4

CUSTOM 425 CFH 4 METER STACKED 6' 8" 3' 4" 3

GGMI-CAB 630 CFH 1 METER 3' 10" 2

CUSTOM 630 CFH 2 METER 6' 8" 3' 4" 3

CUSTOM 630 CFH 3 METER 9' 6" 3' 2" 4

GGMI-FAC 1000 CFH 1 METER 4' 2" 2

CUSTOM 1000 CFH 2 METER 7' 4" 3' 8" 3

GGMI-GAC 2 M 1 METER 5' 4" 2

GGMI-HAC 3 M 1 METER 5' 4" 2

GGMI-JAD 5 M 1 METER 6' 3' 3

GGMI-LAD 7 M 1 METER 6' 3' 3

GGMI-MAD 11 M 1 METER 7' 3' 6" 3





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