rp flng tightening

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Reliance Industries Limited

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Reliance Industries Ltd, India

Prepared by : K Gopalakrishnan Page: 1 of 31Checked by : A Venkatraman

Group Manufacturing Services Engineering Services Dept Date: 21-Mar-07

Approved by : V V SuryaRau DOC. No: GMS/RP/30 Revision no.: 0.0

Best Practices

For Flange Tightening

Please send your comments and suggestions to the author.

This document is intended for guidance purpose and may be adopted with minor modifications by any functional department within RIL group of companies.

Reproduction of this document or parts thereof in not allowed unless written permission is obtained from

the approving authority.

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INDEX

1 Introduction 03

2 Scope 03 3 Objective 03 4 Applicable codes 03 5 Design calculation 03

5.1 Gasket seating 03 5.2 Bearing stress on flanges 03 5.3 Pressure thrust 03 5.4 Dead load bending moment 03 5.5 Thermal bending moment 04 5.6 Thermal gradient at the bolts 04 6 General requirement 04

6.1 Material identification 04 6.2 Flanges 04 6.3 Hardware 05 6.4 Lubricants 05 6.5 Gaskets 05 6.6 Flange fit up 05 6.7 Manual tightening 06 6.8 Manual torque 06 6.9 Hydraulic torque 06

6.10 Tensioning 06 6.11 Disassembly and retightening 06 7.0 Installation procedure 06 7.1 Pre bolting inspection 06 7.2 Flange and gasket assembly 06 7.3 Stud bolt torquing 08 7.4 Bolt tensioning 08 7.5 Tightening 08 7.6 Manual tightening 09 7.7 Manual torque 09 7.8 Hydraulic torque 09 8.0 Quality assurance 09 8.1 Tool calibration 09 8.2 Compliance with installation procedure 10 9 Annexure I – Tolerance flange alignment 11 10 Annexure II- Tensioning torque details 12 11 Annexure III- Tightening/torquing/tensioning record 24 12 Annexure IV- Flange Fit up/Tightening check list 25 13 Annexure V- Bolt tightening sequence 26 14 References 31

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1.0 INTRODUCTION Tightening of the flanges is a common and important maintenance activity in a continuous process industry. Maintenance crew must be highly skilled & the supervisor handling the job should be well conversant with the details & procedures. Since the failure of the flange joint can lead to hazardous situation as well revenue loss to the organization in the form of direct cost as well as in the form of opportunity cost, enough importance should be given to this maintenance activity. 2.0 SCOPE In summary, this will consist of pipe to pipe, pipe to equipment, instrument to pipe, flanged connections, their associated component parts, and preparation i.e. gaskets, studs, bolts, nuts, cleaning, lubrication, alignment, manual tightening, manual torquing, hydraulic torquing, and associated documentation. Then procedure is based on standard ANSI 16.5 and B16.74 3.0 OBJECTIVE Objective of this document is to lay down the best practices & procedures to be adopted in Reliance Industries Ltd for tightening the flanges. 4.0 APPLICABLE CODES

ANSI B 1.1 - Unified Inch Screw Threads ASME Section VIII - Boiler and Pressure Vessel Code, Pressure Vessels Division 1 Code for Pressure Piping

• B31.1 - Power Piping • B31.3 - Chemical Plant and Petroleum Refinery Piping • B16.5 - Steel Pipe Flanges and Fittings • B16.47 -Large Diameter Steel Flanges

5.0 DESIGN CALCULATIONS

The design calculations used to arrive at the minimum bolt loading include the following criteria.

5.1 Gasket Seating.

The minimum load on the gasket which will seat the gasket on the flange faces. This load is equal to the optimum gasket seating stress specified by the gasket manufacturer at the operating temperature. 5.2 Maximum Bearing Stress on Flanges

1. Austenitic stainless steel flanges 350N/mm2

2. Ferritic steel flanges 450N/mm2 5.3 Pressure Thrust The hydrostatic end thrust that tends to separate the flanges. 5.4 Dead Load Bending Moment

The maximum moment occurring at the flange joint when dead weight loading is considered independently of all other loadings.

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5.5 Thermal Bending Moment

The maximum moment occurring at the flanged joint when thermal loading is considered independently of all other loadings.

5.6 Thermal Gradient at the Bolts

For un-insulated flanged joints, the bolts are assumed to be a different temperature from the flanges, causing differential thermal expansion across the bolted joint. For systems operating above installation temperatures, this differential will tend to tighten the joint. For systems operating below the installation temperature this differential will tend to open the joints.

Additionally if the flange joint will be subjected to high temperatures, the initial calculated bolt load shall be increased by the amount necessary to ensure an adequate working life for the joint, considering loss of bolt load due to the effect of "creep and relaxation" on the bolts. Gasket relaxation should be incorporated as well.

The hydrostatic test condition shall be also considered.

For mechanical equipment stresses are compared against the lowest minimum yield stress determined for bolting materials found in the ASME VIII, Div. I.

6.0 GENERAL REQUIREMENTS

6.1 Material Identification The operating process temperature to which a piping system is designed is a critical factor. Temperature affects and dictates the materials specified in the design of flanged joints. Specifically, bolts and studs stretch easier at higher temperatures. If a bolt or stud graded for a lower temperature is used in a high temperature system, it may stretch, lose its memory, and at the very least leak. At worst, it can catastrophically fail, and cause great loss of life.

6.2 Flanges Flange surfaces shall be finished in accordance with the flange finish description referred to by the Piping Class. Gasket surfaces shall be inspected by the fit up crew, and shall not show evidence of damage, or contaminants. The bolt or nut seating surface shall be flat and provide a low friction, full contact area for bolt head or nut. Discrepancies shall be addressed to Field Engineering for evaluation. Note: Cast firewater valves / flanges are an exception to this rule. In extreme case, the flange may require re-machining. Should this situation arise, Field Engineering shall contact procurement and project controls for evaluation of potential back charges.

1. Gasket surface areas shall be cleaned in accordance with the gasket manufacturer’s installation

instructions. Typically previous gasket materials and contaminants such as dirt, oil, and grease. Thin, uniform preservative coatings are generally acceptable. Provided they do not fill seating finish or show evidence of build up or runs. When using a wire brush for cleaning, ensure the wire brush is compatible with the flange material i.e. do not use carbon steel bristles on stainless steel flanges. The direction of brushing shall also follow the seating surface grooves or finish. Take care not to over smooth the finish, and use only Hand brushes. Depending on gasket type, minimum profiles are required for optimum gasket performance. Power brushes shall only be used, if approved by Field Engineering.

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2. Flange gasket seating surfaces shall be inspected for scratches, dents, scoring, and other damage. Depending on the gasket type, pipe size, and extent of imperfections, some deviation can be accommodated, without flanged joint degradation. Contact Field Engineering if further interpretation is required.

3. Flange seating surfaces shall also be monitored for flatness, around their circumference. 6.3 Hardware The fit up crew shall verify all studs, nuts, and bolting hardware against the respective ISO’s and MTO’s to ensure the correct components are used when assembling flange joints, and piping system’s in general. Studs shall be of sufficient length to achieve full thread engagement plus a minimum of two threads beyond the nut, or threaded flange. Studs greater than 1-1/8" diameter shall have one full stud diameter beyond the nut to allow tensioning. Any discrepancies or questions shall be addressed to Field Engineering for resolution. Studs, nuts, and bolting hardware shall be inspected, and deemed free of damage, corrosion, and contaminants. Studs, nuts, and bolting hardware threads shall be coated with an approved lubricant. 6.4 Lubricants Shall be used only the approved lubricants: Loctite Anti Seize Paste # 771

6.5 Gaskets Design engineering selects gaskets as a joint system to provide optimum performance through out the range of expected operating pressures and temperatures. The fit up crew shall follow the procedure below, when installing gaskets. Regardless of gasket type:

1. Prior to installing gasket, ensure all flange and gasket surfaces are cleaned and dry. 2. Until ready for installation, the gasket shall remain horizontal. And attached to its accompanying

packaging. 3. For gasket centering or vertical applications, check with the Field Engineer for approved spray

contact adhesive.

6.6 Flange Fit up.

1. All above preparations and verifications must have been performed prior to flange fit up. Special attention shall be paid to appropriate material selection, identification, and cleanliness.

2. Flanged piping shall be properly supported. It is preferable that pipe be in its final position with

permanent supports installed. 3. Flanged equipment shall be properly supported, leveled, aligned, and locked in its final position. It

is preferable that final grouting and curing be complete. 4. The pipe itself shall be inspected, and any dirt, tools, or construction debris removed. The Fit up

crew foreman shall indicate the pipe is clean on Annexure IV, the Flange Fit up / Tightening / Torquing Checklist. For un-tested joints this activity shall also be noted on Annexure III, the Tightening/Torquing/Tensioning Record. Any problems shall be addressed to Field Engineering.

5. Flange face alignment shall be within 1 mm per 10 inch pipe diameter. On pipe to pipe flanges, loosen adjacent pipe supports and adjust to achieve proper alignment. When performing pipe to equipment fit up, only the pipe shall be adjusted.

6. In no case, shall the equipment be adjusted to achieve alignment. 7. Contact Field Engineering should there be any problem.

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8. Flange face stud, or bolt, hole alignment shall be within 1.5 mm. When performing pipe to equipment fit up, only the pipe shall be adjusted. In no case, shall the equipment be adjusted to achieve alignment. Contact Field Engineering should there be any problem.

9. Stud/bolt, holes shall be clean, and free of any foreign debris. This debris will contaminate flange and gasket surfaces.

10. Install sufficient studs to locate the gasket. 11. Install the gasket. Do not use force or use seating compounds. Contact Field Engineering if

problems arise. 12. Install the remaining studs, bolts, and /or nuts, finger tight. 13. Using Annexure IV, the Flanged Joint / Tightening Checklist. The fit up crew foreman shall assure

all tested flanged joints have been properly assembled with the correct components. And are ready for the appropriate tightening, torquing, or tensioning procedure.

14. If the flanged joint will not be hydro-tested, Annexure IV the fit up crew foreman shall sign, date and note his badge number on the Flange Fit up / Tightening/Torquing Completion Record shall also be completed. This input sheet shall than be turned into Field Engineering. It will be entered into the database to ensure the flanged joint will receive additional quality control surveillance during hydro-test restoration, and prior to mechanical completion, and turnover to client.

6.7 Manual Tightening

Flange bolts may be tightened by non-calibrated hand combination and hammer wrenches on 150 lb. rated utility piping systems only.

6.8 Manual Torque

Flange bolts shall be tightened with calibrated torque wrenches / tools on all hydrocarbon systems for all rated pressures up to 1” and on all utility systems rated 300 and greater. Hammer tightening of bolts or studs in any hydrocarbon system are not permitted. Torque tightening of flanged joints, uses the pitch of a threaded bolt or stud to transform rotational movement (relative to the nut or threaded flange), to provide stress or tension in the bolt or stud. Properly designed, this stress is adequate to maintain the integrity of flanged joint, without a permanent stretch or change in length. For any given material type and diameter of bolt or stud, there is maximum stress allowed. Exceeding this may cause a bolt or stud to stretch and “lose its memory” of its original length. At this point, all we have is a “longer” bolt or stud with less corresponding stress. Over torque of flanged joints is not allowed. Specifically, bolts and studs may stretch or break, gaskets, or flange faces may be damaged, and continue the very least leak. At worst, it can catastrophically fail, either during torquing or operation, and cause injury or lose of life.

6.9 Hydraulic Torque When specified, requested by Field Engineering, or when the flanged joint requires a torque value of greater than 500 Ibf.ft (678 Nm) to be applied, calibrated hydraulic torquing will be utilized. Instructions accompanying the torquing equipment shall be strictly followed.

6.10 Tensioning Stud and bolt sizes 1-1/8 inches and greater, and specified critical flanged joints, require tensioning, regardless of service or rating. Tensioning requires one stud diameter extending beyond the nut, on the most accessible side of the flange.

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6.11 Disassembly and re-tightening of previously tightened flanged joints • Studs, nuts, and bolting hardware shall be loosened in the sequence show in Figures 1 thru 5, as

applicable. • Using Figures 1 thru 5 loosen each nut by l/2 in sequence. Every nut or bolt shall backed off at 1/2

turn before completely loosening any nut or bolt. • Prior to re-tightening, all inspections and verifications shall be performed as shown in above

paragraphs. • Studs, nuts, and bolting hardware shall be re-tightened in accordance with the procedures

7.0 INSTALLATION PROCEDURE 7.1 Pre-Bolting Inspection

• Inspect the gasket material for possible defects such as bends or creases.

• Inspect the mating flanges for dirt, mechanical damage and corrosion. Use a suitable solvent to clean the surfaces. The contact area of the flanges should be free from excessive pitting, radial tool marks and scratches.

• Inspect the studs and nuts. They should be free of dirt and corrosion. The studs should be straight and the threads free from nicks, burrs and chips. Molykote. P 37 shall be used as lubricant / anti seize compound, except for oxygen lines. Before application the studs shall be degreased.

7.2 Flange and Gasket Assembly

• Ensure gasket of correct dimension and of specified material is used.

• Gasket shall be located correctly to ensure full sealing as indicated in drawing. For example -

gasket on tube sheet of exchanger needs to be located so that outer periphery of gasket matches

with OD of tube sheet at all points.

• Before inserting the gasket in between the pipe flanges, check the flanges are parallel and co-axial

(When none of the bolts is installed in the flange).

• As per ANSI B 31.3 clause no. 335-C, permitted tolerances are as follows: Flange faces shall be

aligned to the design plane within 1mm in 200mm (1/16 in. /ft) measured across any diameter;

flange bolts holes shall be aligned within 3mm (1/8 inch) maximum offset.

• If pipe flanges are not meeting the ANSI B31.3 requirement, piping shall be rectified.

• All gaskets seating area shall be cleaned properly before gasket insertion. If serration is damaged,

reserration must be done.

• Finger tightens all studs and nuts. Center studs between nuts so an equal number of threads

project at each end. When tensioning is required a threaded length of one times bolt diameter

should protrude at the end where the bolt tensioners are to be placed. The stud end away from the

tensioned side shall be flush or maximum protrude two thread windings.

• For tolerances on flange joints see Annexure I

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7.3 Stud Bolt Torquing

• Ensure that material of all bolts and nuts is as specified.

• Bolts & nuts shall be cleaned with suitable solvents like Diesel using wire brush, especially in

threaded portion.

• The bolt shall be lubricated with molybdenum di-sulfide and it is essential especially in all bolts of

size 7/8” and above to check the application as the bolt load developed by torque is dependent on

the lubrication of threads.

• It is recommended to avoid use of short bolts on the flange joints.

• Bolt torquing shall be applied for bolt sizes 1 inch and smaller, a manual torque wrench may be used. For larger bolts (> 1 inch), a suitable hydraulic torque wrench should be used at all times.

• Using torque loadings given in Annexure II. Make the first pass. Follow the tightening sequence from Annexure II.

• Make the second pass. • Make the final pass. • Bring the nuts up to the final torque value. Be sure to follow the same sequence.

7.4 Bolt Tensioning • Bolt tensioning shall be applied in accordance with Annexure II. • The application of bolt-tensioning equipment shall be in strict accordance with the

manufacturer's instruction manual and safety procedures. • The personnel using the equipment shall be adequately trained in its application. • To facilitate loosening of the nuts when required at some later date, it will be necessary to

treat the thread of the bolts with an acceptable anti-seize compound before fitting the nuts. • Lubricant shall not be applied on bolts used in oxygen systems.

7.4.1 After the tightening procedure is completed the extended thread lengths of uninsulated

connections (including H2 lines) shall be protected against the effects of corrosion to allow the nuts to be subsequently unscrewed. Protection shall be done using suitable (aluminum) screwed end-caps covering the full extended thread length.

7.4.2 Upon completion of bolt tensioning each flange connection shall be provided with a wire seal 1) Materials to be used for wire seal: 2) Wire: stainless steel 3) Seal: stainless steel or aluminimum.

The use of "low melting" metals such as zinc or lead is prohibited. 7.5 TIGHTENING • It is important that all bolted joints are tightened uniformly and in a diametrically staggered

• In case of pipe flanges 8"NB & up to 12"NB and having a pipe with spacer piece and minimum of two

gaskets (which are getting compressed simultaneously during tightening) the distance between two

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flanges should be measured at four locations like 12’o clock, 3’o clock’ 6’o clock and 9’on clock

positions and maintained equal for even tightening. The tightening shall be gradual and uniform. In

case of flanges above 12” NB distance between the flanges shall be measured in 8 locations for

uniform tightening.

• All stud bolts of 7/8" and above shall be tightened using torque wrench. While tightening the bolt with

torque wrenches (for pipe / Manway flanges) ensure that tightening load to each bolt is applied as

uniformly as possible. The tightening shall be carried out in three or four stages in steps of 30, 50 & 70

percent of the final torque value. At fourth stage again use 70 percentage of the final torque value.

• For heat exchangers flanges torque values to be 30, 70,100 and 100 percent of the final torque value.

Where recommended to use hydraulic tensioner for bolt tightening follow the manufacturer recommendations.Some tightening Methods are

7.5.1 Manual Tightening

• Verify that the general requirements above have been completed. • Tightening shall be accomplished utilizing non-calibrated hand tools. The tightening sequence

shown in Figures 1 thru 5 shall be adhered to regardless of the tightening technique. To ensure even tightening of the flanged joint.

• At the request of Field Engineering, torquing may substitute manual tightening.

7.5.2 Manual Torque • Verify that the general requirements above have been completed. Including verification of tool

calibration and range. Tools shall also be inspected for any indication of damage. Any discrepancies shall be noted for resolution and / or replacement.

• Torque shall be applied in stages of 30%, 60% and 100% of the specified torque values. The

tightening sequence shown in Figures 1 thru 5 shall be adhered to regardless of tightening

technique. To ensure even tightening of the flanged joint.

• At the request of Field Engineering, hydraulic torquing or tensioning may substitute manual

torquing.

7.5.2 Hydraulic Torque With the exception, of the type of tool, all procedures that apply to manual torquing. Also apply to hydraulic torquing. 8 QUALITY ASSURANCE

8.1 Tool Calibration

• Acceptable makes of bolt tensioning equipment.

• The calibration of torque wrenches and tensioners shall be checked against the manufacturer’s specifications upon receipt. Any tools that are out of calibration shall be rejected.

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• A recheck of the calibration shall be made as per tool manufacturer standard. Any tool found to be out of calibration shall immediately be taken out of service for repair.

• All flanged joints secured with tools found to be defective shall be rechecked with a properly functioning tool.

8.2 Compliance with Installation Procedures

Contractor shall provide a bolt tensioning and bolt torquing procedure for approval. The procedure shall show all required information amongst others:

• Type of bolt torquing tensioning equipment • Pre-installation measurements • Precautions to be taken • Record preparation instructions • Establishment of the "break loose" torque based on minimum 4 tensioners • 24 hours recheck procedure.

Contractor shall prepare a bolt torquing/tensioning record per flange joint. Those records shall be issued as part to the turnover packages. Records for flange joints requiring bolt torquing using bolts with bolt diameter < 1 inch are not required. Subject non documented flange connections shall be checked and signed after torquing in the field

The numbering system for flanged joints in piping systems shall be as follows:

Starting with the flow direction of each line number within one unit the flange sets shall be identified as Fl, F2, F3, etc. and line number. The flange numbering shall be added to the isometric line over by erection contractor.

The numbering system for flanged joints of equipment not part of a piping system, ie manholes etc. shall be as follows.

Each equipment flange set shall be identified with the nozzle number as shown on the equipment drawing followed by the equipment number.

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ANNEXURE - I

1.0 TOLERANCE FLANGE ALIGNMENT

FLANGE SIZE/RAT' G

FLG 0/D

Recommended tol. (2.5mm/m)

FLANGE SIZE/RAT' G

FLG O/D C

Recommended tol.

(2.5mm/m)

1" 600LB 124mm 0 , 3 1mm 1" 900LB

14 9mm 0 , 37mm

2” 600LB 165 0 , 4 1 2" 216 0, 54 4” 600LB 273 0 ,68 4" 292 0, 73

6” 600LB 356 0 , 6 9 6" 381 0, 93

10" 600LB 508 1, 27 10" 546 1, 37

12” 600LB 559 1,40 12" 610 1, 53

16” 600LB 686 1 , 72 16" 705 1 , 7 6

20" 600LB 813 2, 03 20" 857 2, 14 24" 600LB 940 2 , 35 24" 1041 2, 60

1" 1500LB 149mm 0 , 3 7mm 1" 2500LB 15 9mm 0, 40

2" 1500LB 216 0, 54 2" 235 0, 59

4” 1500LB 311 0, 78 4" 356 0, B9

6" 1500LB 394 0, 99 6 " " 483 1, 21

10" 1500LB 584 1, 46 10" 673 1 ,68

12" 1500LB 673 1, 68 12" 762 1, 91

16" 1500LB 826 2, 07

20" 1500LB 984 2, 46

24" 1500LB 1168 2, 92

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ANNEXURE II

TORQUE /TENSIONING DETAILS

1.0 TENSIONING Hydraulic tensioning shall be required on all hydrocarbon line classes flanged connections with studs sizes 28 mm (1 1/8”) and greater. Hydraulic tensioning shall also be required on all utility systems with flange ratings 300# ANSI and greater.

2.0 TORQUING All hydrocarbon line classes with flange studs 16 mm (5/8”) up to 25 mm (1”) inclusive shall have flanged connections tightened with the use of torque control. Manual torque tightening is acceptable up to torque values greater than 500 ft-lbs. This generally means manual torquing can be used for stud sizes up to 38mm (1 1/8”) diameter and hydraulic torque tightening is required for larger studs.

The following table summarizes the studs, which require torque control during tightening.

SERVICE CLASS 16mm 5/8”

25mm 1 ‘

28mm 1 1/8 “

31mm 1 ¼ “

34mm 1 3/8 “

38mm 1 ½ “

44mm 1 ¾ “

50mm 2 “

plus Tightening Method

Torquing Tensioning All Hydrocarbon

All Utilities 300# Notes: (1)(2)

NOTES: 1. Utilities 150 # ANSI class is exempted from tensioning or torquing. 2. Utilities means line classes: low pressure steam, instrument air, nitrogen

3.0 BOLT TENSIONING/TORQUING TABLE

flange size 150/300 LBS

600LBS

900 LBS

1500 LBS

2500 LBS

DN B A B A B A B A B

15 - 1/2 to 3/4 to 3/4 to 3/4 to

20 - 5/8 to 3/4 to 3/4 to 3/4 to

25 - 5/8 to 7/8 to 7/8 to 7/8 to

40 - 3/4 to 1 to 1 to 1 1/8 to*

50 _ 5/8 to 7/8 to 7/8 to 1 to

80 - 3/4 to 7/8 to 1 1/8 to* 1 1/4 to*

100 - 7/8 to 1 1/8 to* 1 1/4 to* 1 1/2 te

150 - 1 to* 1 1/8 to* 1 3/8 to* 2 te

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200 - 1 1/8 to* 1 3/8 to* 1 5/8 te 2 te

250 - 1 1/4 to* 1 3/8 to* 1 7/8 te 2 1/2 te

300 - 1 1/4 to* 1 3/8 to* 2 te 2 3/4 te

350 _ 1 3/8 to* 1 1/2 te 2 1/4 te > te

400 - 1 1/2 te 1 5/8 te 2 1/2 te > te

450 - 1 5/8 te 1 7/8 te 2 3/4 te > te

500 - 1 5/8 te 2 te 3 te > te

600 - 1 7/8 te 2 1/2 te 3 1/2 te > te

650-700 - > te > te > te > te

800-1000 - > te > te > te > te

1050 - > te > te > te > te

A - Bolt size diameter (inch) - = Manual wrench tightening (no torquing/tensioning required) To = Torquing and no documentation required (bolt size < 1") To* = Torquing with Hydraulic torque wrench and complete documentation required (bolt size > 1") t.e = tensioning and documentation required.

1.4 Calculations for Bolt Torquing.

Calculations of bolt torquing result in required torque figures are as shown in the below table.

Stainless steel stud bolts (b8 & b8m) bolt stress: (25,000 psi) 172375 kpa Torque (Nm)

Bolt Size 1st Pass 2nd Pass Final Pass

½” 10 20 35

5/8” 25 50 75

3/4" 30 60 100

7/8" 50 110 160

1" 80 170 250

1-1/8" 120 240 360

1-1/4" 170 340 510

1-3/8" 230 460 690

1-1/2" 270. 550 820

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TORQUE VALUES FOR STANDARD ANSI / MSS FLANGES 150lb

SUGGESTED APPLIED TORQUE VALUES (NM) BASED ON

RESIDUAL BOLT STRESS & PUMP PRESSURE NOMIN

AL SIZE

(INCH)

BOLTING

NO. / SIZE

(INCH)

MIN.

BOLT

STRE

S TO

SEAL

RES.

BOLT

STRE

S(PSI

) *0.1

PUM

P

Psi

*0.1

3

PUM

P Psi *0.15

PUM

P Psi *0.2

PUMP

Psi

12 12 X 7/8 25,338 48000 277 2039 365 2688 380 2801 515 3789

14 12 X 1 21,012 45000 388 2858 509 3748 532 3921 721 5317

16 16 X 1 19575 45000 388 2858 509 3748 532 3921 721 5317

18 16 X 1 1/8 18777 41160 404 2978 682 5027 747 5505 1013 7465

20 20 X 1 ¼ 16321 42195 568 4187 700 5157 766 5645 1013 7465

24 20 X 1 ¼ 13234 43250 785 3855 993 4874 1091 5357 1479 7264

28 28 X 1 ¼ 14928 43790 793 3895 1004 4930 1144 5617 1495 7340

30 28 X 1 1/4 14928 43790 803 3942 1016 4987 1158 5686 1513 7430

32 28 X 1 ½ 11238 38980 1267 2815 1610 3578 1812 4027 2410 5357

34 32 X 1 1/2 10941 36880 1199 2665 1523 3385 1738 3864 2279 5067

36 32 X 1 ½ 12395 37797 1242 2761 1561 3470 1782 3961 2336 5194

38 32 X 1 1/2 13634 37460 1218 2707 1547 3439 1767 3928 2316 5149

40 36 X 1 1/2 14933 37797 1229 2731 1561 3470 1782 3961 2336 5194

42 36 X 1 1/2 14624 38441 1249 2776 1588 3530 1813 4030 2376 5281

44 40 X 1 1/2 14433 38882 1264 2809 1606 3569 1833 4075 2403 5341

46 40 X 1 1/2 15625 39013 1268 2818 1611 3581 1840 4091 2411 5360

48 44 X 1 1/2 15329 39408 1280 2846 1627 3617 1858 4130 2435 5414

50 44 X 1 7/8 11842 38285 2133 4742 3178 7066 3117 6930 4099 9112

52 44 X 1 7/8 12707 38708 2518 3231 3212 4121 3676 4716 4834 6202

54 44 X 1 7/8 13603 39124 2545 3266 3248 4167 3715 4767 4886 6268

56 48 X 1 7/8 13318 39398 2563 3288 3269 4195 3741 4800 4920 6312

58 48 X 1 7/8 14195 39742 2586 3318 3299 4233 3775 4843 4963 6367

60 52 X 1 7/8 13938 39982 2601 3337 3318 4257 3797 4871 4993 6406

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TORQUE VALUES FOR STANDARD ANSI / MSS FLANGES 300 lb


RESIDUAL BOLT STRESS & PUMP PRESSURE

NOMINA

L SIZE

(INCH)

BOLTING

NO. / SIZE

(INCH)

MIN.

BOLT

STRE

S TO

SEAL

RES.

BOLT

STRE

S(PSI

)

*0.1 PUM

P

Psi

*0.1

3

PUM

P Psi

*0.15 PUM

P Psi

*0.2 PUMP

Psi

3 1/2 8 X 3/4 17846 53599 193 1419 254 1869 275 2029 358 2638

4 8 X 3/4 21871 47117 170 1249 224 1649 241 1779 315 2319

5 8 X 3/4 29311 48843 175 1289 232 1709 248 1829 325 2398

6 12 X 3/4 26247 49546 178 1309 235 1729 255 1879 331 2438

8 12 X 7/8 28034 47426 274 2019 359 2648 391 2878 509 3748

10 16 X 1 21792 45626 393 2898 515 3798 561 4137 731 5387

12 16 X 11/8 22379 41818 549 4047 693 5107 789 5816 1029 7585

14 20 X 11/8 20608 42457 557 4107 704 5187 801 5906 1044 7695

16 20 X 11/4 20722 42791 785 5786 993 7315 1132 8345 1479 10903

18 24 X 1 1/4 22117 41104 727 3569 953 4681 1088 5340 1421 6978

20 24 X 1 1/4 26007 41442 759 3728 961 4720 1096 5380 1432 7031

24 24 X 1 1/2 23523 39429 1279 2843 1629 3620 1859 4133 2437 5417

28 28 X 1 5/8 21321 39707 1656 2124 2106 2702 2407 3088 3159 4054

30 28 X 1 3/4 20598 36098 1893 2429 2412 3095 2758 3539 3625 4650

32 28 X 1 7/8 19940 39121 2545 3266 3248 4167 3715 4766 4885 6267

34 28 X 1 7/8 22061 39466 2567 3293 3275 4201 3748 4809 4929 6324

36 32 X 2 18694 37615 2986 2974 3814 3799 4366 4349 5745 5722

38 32 X 1 1/2 34901 44064 1405 1802 1820 2335 2077 2665 2724 3495

40 32 X 1 5/8 32680 44952 1801 2310 2385 3060 2726 3497 3577 4589

42 32 X 1 5/8 35637 45276 1888 2422 2401 3081 2745 3521 3603 4623

44 32 X 1 3/4 33553 41682 2186 2804 2785 3573 3185 4087 4185 5369

46 28 X 1 7/8 35446 44509 2895 3714 3695 4741 4227 5423 5558 7131

48 32 X 1 7/8 33781 44850 2918 3744 3726 4781 4259 5465 5602 7187

50 32 X 2 32018 40422 3208 3195 4360 4342 4990 4970 6567 6541

52 32 X2 34336 42993 3142 3129 4360 4342 4990 4970 6567 6541

54 28 X 2 1/4 32884 40016 4559 3054 5838 3911 6682 4477 8807 5901

56 28 X 2 1/4 35094 42337 4823 3232 6171 4135 7070 4737 9318 6243

58 32 X 2 1/4 32958 40413 4604 3084 5890 3947 6749 4522 8894 5959

60 32 X 2 1/4 35025 42920 4890 3276 6257 4192 7168 4802 9446 6329

For Internal

Circulation Only


Copyright:





TORQUE VALUS FOR STANDARD ANSI / MSS FLANGES 400 lb



NOMINA

L SIZE

(INCH)

BOLTING

NO. / SIZE

(INCH)

MIN.

BOLT

STRES

TO

SEAL

RES.

BOLT

STRE

S(PSI

)

*0.1 PUM

P

Psi

*0.13 PUM

P

Psi

*0.15 PUM

P Psi

*0.2 PUMP

Psi

4 8 X 7/8 20765 45681 263 1939 347 2558 377 2778 490 3608

8 12 X 7/8 24920 45487 262 1929 346 2548 376 2768 488 3598

10 16 X 11/8 21826 42753 561 4137 708 5217 807 5946 1051 7745

12 16 X 11/4 21324 43965 805 3955 1020 5007 1162 5706 1520 7464

14 20 X 1 3/8 22002 40070 991 4867 1258 6179 1436 7051 1879 9228

16 20 X 1 3/8 22002 40070 991 4867 1258 6179 1436 7051 1879 9228

18 24 X 1 1/2 22726 39689 1290 2867 1639 3644 1871 4160 2453 5453

20 24 X 1 1/2 22726 39689 1290 2867 1639 3644 1871 4160 2453 5453

22 24 X 1 5/8 21830 40724 1698 3774 2160 4802 2469 5489 3241 7204

24 24 X 1 3/4 22077 38207 2004 2571 2553 3276 2919 3746 3836 4922

26 28 X 1 3/4 21161 40258 2111 2709 2690 3452 3077 3947 4042 5186

28 28 X 1 7/8 20506 38725 2519 3232 3215 4125 3677 4718 4837 6206

30 28 X 2 20263 39572 3142 3129 4012 3996 4593 4574 6045 6021

32 28 X 2 22852 40227 3193 3181 4079 4063 4669 4650 6145 6120

34 28 X 2 25282 42821 3399 3386 4342 4325 4970 4950 6541 6515

36 32 X 2 24641 43097 3421 3408 4370 4353 5002 4982 6583 6557

38 32 X 1 3/4 33794 43972 2307 2297 2938 2927 3360 3347 4415 4397

40 32 X 1 7/8 31919 44619 2903 3725 3703 4751 4238 5437 5573 7150

42 32 X 1 7/8 34785 44850 2918 3744 3724 4777 4259 5465 5602 7187

44 32 X 2 33006 42702 3390 4349 4330 5555 4956 6359 6524 8370

46 36 X 2 321365 43081 3420 3406 4368 4350 5001 4981 6581 6554

48 28 X 2 1/4 34850 44463 5065 5044 6482 6456 7425 7396 9786 9747

50 32 X 2 1/4 32758 42544 4846 3247 6208 4159 7105 4761 9366 6275

52 32 X 2 1/4 35159 45055 5132 3439 6567 4400 7524 5041 9916 6644

54 28 X 2 1/2 34618 44887 7062 3460 9050 4434 10375 5084 13687 6707

56 32 X 2 1/2 32326 45133 7092 3475 9099 4458 10432 5112 13763 6744

58 32 X 2 1/2 24428 45282 7123 3490 9129 4473 10466 5128 13808 6766

60 32 X 2 3/4 30279 39832 8404 4118 10784 5284 12371 6062 16336 8005

For Internal

Circulation Only


Copyright:





TORQUE VALUES FOR STANDARD ANSI / MSS FLANGES 600lb



NOMI

NAL

SIZE

(INCH

)

BOLTING

NO. / SIZE

(INCH)

MIN.

BOLT

STRES

TO SEAL

RES.

BOLT

STRES(

PSI) *0.1 PUM

P Psi

*0.13 PUM

P

Psi

*0.15 PUM

P

Psi

*0.2 PUM

P Psi

4 8 X 7/8 31148 44436 188 1389 338 2488 366 2698 476 3508

5 8 X 1 31809 45158 389 2868 510 3758 556 4097 721 5317

6 12 X 1 28484 46004 393 2898 519 3828 567 4177 727 5357

8 12 X 11/8 32092 45464 597 4397 754 5557 856 6306 1119 8245

10 16 X 11/4 25698 44626 818 6026 1036 7635 1182 8715 1549 11413

12 20 X 1 1/4 27787 45237 830 4075 1050 5153 1196 5872 1563 7677

14 20 X 1 1/2 25763 41257 1021 2270 1295 2879 1478 3286 1935 4302

16 20 X 1 1/2 27162 40678 1322 2939 1680 3735 1919 4265 2515 5592

20 24 X 1 5/8 28554 42743 1782 3961 2267 5040 2591 5760 3401 7560

22 24 X1 3/4 27833 36526 1916 2458 2441 3132 2792 3582 3668 4706

24 24 X 1 7/8 28425 39467 2567 3293 3276 4203 3748 489 4929 6324

26 28 X 1 7/8 27246 40132 2610 3349 3332 4275 3812 4890 3656 4690

28 28 X 2 26741 38261 3037 3025 3880 3864 4441 4423 5844 5821

30 28 X 2 30394 40818 3119 3106 4139 4122 4738 4719 6232 6207

32 28 X 2 1/4 26628 34936 3980 2667 5092 3411 5835 3909 7689 5151

38 28 X2 1/4 34756 44463 5065 3393 6482 4343 7425 4975 9786 6557

40 32 X 2 1/4 38389 47083 5363 3593 6863 4598 7863 5269 10363 6943

42 28 X 2 1/2 33703 44793 7047 4722 9031 6051 10353 6937 13659 9152

44 32 X 2 1/2 32279 40471 6366 3120 8159 3998 9354 4583 12341 6047

46 32 X 2 1/2 34864 43068 6776 3320 8682 4254 9954 4878 13133 6435

48 32 X 3 1/4 30883 39974 8434 4133 10822 5303 12414 6083 16394 8033

50 28 X 3 31582 41061 11285 5529 14494 7102 16634 8151 21982 10771

52 32 X 3 29599 39114 10749 3827 13807 4915 15845 5641 20939 7932

54 32 X 3 31890 41617 11437 4071 14690 5229 16859 6002 22280 7932

56 32 X 3 1/4 28716 39965 14026 4993 18031 6419 20701 7369 27376 9746

58 32 X 3 1/4 30787 40145 14089 3452 18112 4437 20794 5095 27500 6737

60 28 X 3 1/2 32202 39246 17256 2537 22218 3266 25517 3751 33764 4963

For Internal

Circulation Only


Copyright:





TORQUE VALUES FOR STANDARD ANSI FLANGES 900lb



NOMINA

L SIZE

(INCH)

BOLTING

NO. / SIZE

(INCH)

MIN.

BOLT

STRE

S TO

SEAL

RES.

BOLT

STRE

S(PSI

)

*0.1 PUM

P Psi

*0.13 PUM

P

Psi

*0.15 PUM

P

Psi

*0.2 PUMP

Psi

3 8X 7/8 32399 49331 285 2099 374 2758 407 2998 529 3898

4 8 X 1 1/8 26946 43039 564 4157 446 3288 811 5976 1058 7795

5 8 X 1 1/4 28347 44293 690 3389 658 3229 1172 5752 1531 7517

6 12 X 1 1/8 32338 45462 597 4397 536 3948 854 6296 1116 8225

8 12 X 1 3/8 30318 40071 991 2204 952 2116 1436 3192 1879 4178

10 16 X 1 3/8 30929 41257 1024 2276 971 2158 1478 3286 1935 4302

12 20 X 1 1/2 33443 42707 1060 2357 1050 2333 1535 3412 2003 4452

14 20 X 1 1/2 31684 41940 1363 3029 1309 2909 1977 4395 2593 5764

16 20 X1 7 /8 33998 45436 1889 4199 1803 4009 2750 6113 3614 8033

18 20 X 2 1/2 27490 38441 6048 2963 5542 2716 8885 4353 11723 5744

20 20 X 2 32478 42507 3374 3360 3292 3279 4934 4915 6494 6468

24 20 X 2 1/2 27490 38441 6048 2963 5542 2716 8885 4353 11723 5744

26 20 X 2 3/4 25057 34928 7370 3611 6784 3324 10848 5316 14325 7019

30 20 X 3 26793 36031 9902 3525 9457 3367 14596 5196 19589 6867

32 20 X 3 1/4 25521 34782 12207 2991 11514 2821 18016 4414 23826 5837

34 20 X 3 1/2 24161 34277 15083 2217 13678 2011 22252

7

3312 29808 4382

36 20 X 3 1/2 26912 34648 15247 2241 15235 2239 22527 3312 29808 4382

38 20 X 3 1/2 30809 37550 16523 2429 17441 2564 24415 3589 32305 4749

40 24 X 3 3/4 28547 35927 15810 2324 16161 2376 23358 3434 30909 4544

42 24 X 3 3/4 30954 36326 15985 2350 17524 2576 23619 3472 31252 4594

44 24 X 3 3/4 29256 34989 19038 2799 20435 3004 28076 4127 37168 5464

46 24 X 4 28064 37421 22081 3246 23883 3511 32685 4805 43289 6363

48 24 X 4 30134 35440 23414 3442 25646 3770 34659 5095 45905 6748


NOMINA

L SIZE

BOLTING

NO. / SIZE

MIN.

BOLT

RES.

BOLT



For Internal

Circulation Only


Copyright:





(INCH) (INCH) STRE

S TO

SEAL

STRE

S(PSI

)

*0.1 PUM

P

Psi

*0.13 PUM

P

Psi

*0.15 PUM

P

Psi

*0.2 PUMP

Psi

3 8 X 1 1/8 31167 46236 607 4477 766 5646 872 6426 1138 8385

4 8 X 11/4 35144 45175 829 4068 1048 5147 1195 5866 1561 7663

5 8 X 1 1/4 31223 42550 1383 3075 1757 3907 2007 4461 2631 5848

6 12 X 1 3/8 33971 43148 1069 2375 1355 3011 1546 3436 2023 4497

8 12 X 1 5/8 34729 45758 1907 4238 2427 5396 2774 6167 3641 8094

10 12 X 1 7/8 34466 45377 2952 3787 3767 4833 4309 5529 5667 7270

12 16 X 2 30375 39334 3123 3110 3988 3972 4566 4547 6008 5984

14 16 X 2 1/4 27161 36409 4148 2779 5307 3556 6080 4074 8013 5368

16 16 X 2 3/4 27787 38891 6118 2998 7840 3842 8989 4405 11860 5811

18 16 X 2 3/4 29008 38670 8160 3999 10470 5130 12010 5885 15860 7771

20 16 X3 28424 37864 10406 3705 13365 4758 15338 5460 20271 7216

24 16 3 1/2 28029 34282 15086 2218 19407 2853 22290 3277 29493 4335




NOMINA

L SIZE

(INCH)

BOLTING

NO. /

SIZE

(INCH)

MIN.

BOLT

STRES

TO

SEAL

RES.

BOLT

STRE

S(PSI

)

*0.1 PUM

P

Psi

*0.13 PUMP

Psi

*0.15 PUM

P Psi

*0.2 PUMP

Psi

3 8 X 1/4 41801 51000 936 4594 1184 5812 1349 6625 1763 8655

4 8 X 1 1/2 39662 45300 1473 3274 1871 4160 2136 4748 2800 6225

5 8 X 1 1/2 38108 45250 2373 3045 3024 3880 3458 4436 4544 5830

6 8 X 2 37736 44750 3553 3539 4537 4519 5195 5174 6836 6808

8 12 X 2 38138 46400 3683 3668 4705 4686 5386 5364 7088 7059

10 12 X 2 /2 32272 40050 6300 3087 8074 3956 9256 4535 12213 5985

12 12 X 2 3/4 35161 42100 8883 4353 11399 5585 13075 6407 17266 8460

* CO-EFFICINT OF FICTION DEPENDS ON LUBRICATION DONE ON BOLTS.

ASSUMED BOLT MATERIAL ASTM 193-B7 ; B16

ASSUMED GASKET : SWJ or RTJ soft iron / Carbon steel / Stainless steel

For Internal

Circulation Only


Copyright:





TENSIONING VALUES FOR STANDARD ANSI / MSS FLANGES 150 lb

NOMINAL

PIPE SIZE

(inch)

BOLTING

NO./SIZE

MIN. BOLT

STRESS

TO SEAL

RES. BOLT

STRESS

(Psi)

PUMP

PRESSURE

A

PUMP

PRESSURE

B

TOOL

NO.

TOMMY

BAR

SIZE

SOCKET

(mm)

TOM

MY

BAR

SIZE

PUL

LER

(mm

)

32 28 x 11/2 11238 38980 14000 11000 2 10 12

34 32 x / 1/2 10941 36880 13500 10500 2 10 12

36 32 x 1 1/2 12395 37797 13500 10500 2 10 12

38 32 x 1 1/2 13634 37460 13500 10500 2 10 12

40 36 x 1 1/2 14933 37797 13500 10500 2 10 12

42 36 x 1 1/2 14624 38441 13500 10500 2 10 12

44 40 x 1 1/2 14433 38882 13500 10500 2 10 12

46 40 x 1 1/2 15625 39013 13500 10500 2 10 12

48 44 x 1 7/8 15329 39408 13500 10500 2 10 12

52 44 x 1 7/8 127070 38708 14000 11000 4 10 12

54 44 x 1 7/8 13603 39124 14000 11000 4 10 12

56 48 x 1 7/8 13318 39392 14000 11000 4 10 12

58 48 x 1 7/8 14195 39742 14000 11000 4 10 12

60 52 x 1 7/8 13938 39982 14000 11000 4 10 12

Assumed standard test pressure of : 425 Psi

TENSIONING VALUES FOR STANDARD ANSI / MSS FLANGES 300LB

NOMINAL

PIPE SIZE

(INCH)

BOLTING

NO./SIZE

MIN. BOLT

STRESS

TO SEAL

RES. BOLT

STRESS

(Psi)

PUMP

PRESSURE

A

PUMP

PRESSURE

B

TOOL

NO.

TOMMY

BAR

SIZE

SOCKET

(mm)

TOM

MY

BAR

SIZE

PUL

LER

(mm

)

24 24 X 1 1/2 23523 39429 14500 11500 2 10 12

28 28 X 1 5/8 21321 39707 12500 9500 3 10 12

30 28 X 1 3/4 20598 36098 14000 11000 3 10 12

32 28 X 1 7/8 19940 39121 13000 10000 4 10 12

For Internal

Circulation Only


Copyright:





34 28 X 1 7/8 22061 39466 13000 10000 4 10 12

36 32 X 2 18694 37615 14000 11000 4 10 12

38 32 X 1 1/2 34901 44064 14500 11500 3 10 12

40 32 X 1 5/8 32680 44952 13000 10000 3 10 12

42 32 X 1 5/8 35637 45276 13000 10000 3 10 12

44 32 X 1 3/4 33553 41682 14500 11500 3 10 12

46 28 X 1 7/8 35446 44509 13500 10500 4 10 12

48 32 X 1 7/8 33781 44850 13500 10500 4 10 12

50 32 X 2 32018 40422 14000 11500 4 10 12

52 32 X 2 34336 42993 14500 11500 4 10 12

54 28 X 2 1/4 32884 40016 11000 8000 6 12 14

56 28 X 2 1/4 35094 42337 11500 8500 6 12 14

58 32 X 2 1/4 32958 40413 11000 8000 6 12 14

60 32 X 2 1/4 35025 42920 11500 8500 6 12 14

TENSIONING VALUES FOR STANDARD ANSI / MSS FLANGE 600 LB

NOMINAL

PIPE SIZE

(INCH)

BOLTING

NO./SIZE

MIN. BOLT

STRESS

TO SEAL

RES. BOLT

STRESS

(Psi)

PUMP

PRESSURE

A

PUMP

PRESSURE

B

TOOL

NO.

TOMMY

BAR

SIZE

SOCKET

(mm)

TOM

MY

BAR

SIZE

PUL

LER

(mm

)

16 20 X 1 1/2 27162 40678 14500 11500 2 10 12

18 20 X 1 5/8 29141 42008 13000 10000 3 10 12

20 24 X 1 5/8 28554 42743 13000 10000 3 10 12

22 24 X 1 3/4 27833 36526 14000 11000 3 10 12

24 24 X 1 7/8 28425 39467 13000 10000 4 10 12

26 28 X 1 7/8 27246 40132 13000 10000 4 10 12

28 28 X 2 26741 38261 14000 11000 4 10 12

30 28 X 2 30394 40818 14500 11500 6 10 12

32 28 X 2 1/4 26628 34936 11000 8000 6 12 14

34 28 X 2 1/4 29459 37490 11000 8000 6 12 14

36 28 X 2 1/2 26206 37155 11000 8000 6 12 14

38 28 X 2 1/4 34756 44463 12000 9000 6 12 14

40 32 X2 1/4 38389 47083 15500 12500 6 12 16

For Internal

Circulation Only


Copyright:





42 28 X 2 1/2 33703 44793 15000 12000 6 12 16

44 32 X 21/2 32279 40471 14000 11000 6 12 16

46 32 X 21/2 34864 43068 14500 11500 6 12 16

48 32 X 2 3/4 30883 39974 13500 10500 7 14 16

50 28 X 3 31582 41061 12000 9000 8.5 14 16

52 32 X 3 29599 39114 12000 9000 8.5 14 16

54 32 X3 31890 41617 12000 9000 8.5 14 16

56 32 X 3 1/4 28716 39965 14000 11000 8.5 14 16

58 32 X 3 1/4 30787 40145 14000 11000 8.5 14 16

60 28 X 3 1/2 32202 39246 15500 12500 8.5 14 16

TENSIONING VALUES FOR STANDARD ANSI / MSS FLANGES 900LB

NOMINAL

PIPE SIZE

(INCH)

BOLTING

NO./SIZE

MIN. BOLT

STRESS

TO SEAL

RES. BOLT

STRESS

(Psi)

PUMP

PRESSURE

A

PUMP

PRESSURE

B

TOOL

NO.

TOMMY

BAR

SIZE

SOCKET

(mm)

TOM

MY

BAR

SIZE

PUL

LER

(mm

)

14 20 X 1 1/2 31684 41940 14500 11500 2 10 12

16 20 X 1 5/8 33998 45436 13500 10500 3 10 12

18 20 X 1 7/8 31770 42089 13500 10500 3 10 12

20 20 X 2 32478 42507 15000 12000 4 10 12

24 20 X 2 1/2 27490 38441 14000 11000 6 12 16

26 20 X 2 3/4 25057 34928 13000 10000 7 12 16

28 20 X3 23573 33284 11500 8500 8.5 14 16

30 20 X3 26793 36031 12000 9000 8.5 14 16

32 20 X 3 1/4 25521 34782 13500 10500 8.5 16 16

34 20 X 3 1/2 24161 34277 15000 12000 8.5 14 16

36 20 X 3 1/2 26912 34648 15000 12000 8.5 14 16

38 20 X 3 1 30809 37550 15500 12500 8.5 14 16

40 24 X 3 1/2 28547 35927 15000 12000 8.5 14 16

42 24 X 3 1/2 30594 36326 15000 12000 8.5 14 16

44 24 X 3 1/2 29256 34989 14000 11000 10 16 16

46 24 X 4 28064 37421 15000 12000 10 16 16

48 24 X 4 30134 35440 15500 12500 10 16 16

For Internal

Circulation Only


Copyright:





TENSION VALUES FOR STANDARD ANSI / MAA FLANGES 1500LB

NOMINAL

PIPE SIZE

(INCH)

BOLTING

NO./SIZE

MIN. BOLT

STRESS

TO SEAL

RES. BOLT

STRESS

(Psi)

PUMP

PRESSURE

A

PUMP

PRESSURE

B

TOOL

NO.

TOMMY

BAR

SIZE

SOCKET

(mm)

TOM

MY

BAR

SIZE

PUL

LER

(mm

)

5 8 X 1 1/2 31223 42550 15000 12000 2 10 12

8 12 X 1 5/8 34729 45758 13500 10500 3 10 12

10 12 X 1 7/8 34466 45377 14000 11000 4 10 12

12 16 X 2 30375 39334 14000 11000 4 10 12

14 16 X 2 1/4 27161 36409 11000 8000 6 12 14

16 16 X 2 1/2 27787 38891 14000 11000 6 12 16

18 16 X 2 3/4 29008 38670 13500 10500 7 12 16

20 16 X3 28424 37864 12000 9000 8.5 14 16

24 16 X 3 1/2 28029 34282 14500 11500 8.5 14 16

TENSION VAULES FOR STANDARD ANSI / MSS FLANGE 2500 LB

NOMINAL

PIPE SIZE

(INCH)

BOLTING

NO./SIZE

MIN. BOLT

STRESS

TO SEAL

RES. BOLT

STRESS

(Psi)

PUMP

PRESSURE

A

PUMP

PRESSURE

B

TOOL

NO.

TOMMY

BAR

SIZE

SOCKET

(mm)

TOM

MY

BAR

SIZE

PUL

LER

(mm

)

4 8 X 1 1/2 39662 45300 15500 12500 2 10 12

5 8 X 1 3/4 38108 45250 15500 12500 3 10 12

6 8 X 2 37736 44750 15500 12500 4 10 12

8 12 X 2 38138 46400 15500 12500 4 10 12

10 12 X 2 1/2 32272 40050 14000 11000 6 12 14

12 12 X 2 3/4 35161 42100 14000 11000 7 12 16

ASSUMED BOLT MATERIAL ASTM 193-B7; B16

ASSUMED GASKET: SWJ or RTJ soft iron / Carbon steel / Stainless steel

For Internal

Circulation Only


Copyright:





ANNEXURE III

For Internal

Circulation Only


Copyright:





ANNEXURE - IV

FLANGE FIT UP / TIGHTENING / CHECKLIST ISO No. FLANGE SIZE (No. of Bolts) P&ID No. STUD / BOLT SIZE: Instrument Tag No.

TIGHTENING METHOD Manual Tighten Manual Torque Hydr-Torque Tensioning

Tool Serial No.

Tool Calibration Due Date:

Torque Value:

Flange Fit Up Check List: Yes

Engineer Initial

Correct Studs / Bolts / Nuts

Correct Gasket

Pipe(s) properly supported

Equipment Anchored / Leveled / Aligned

Pipe Clean

Flange Clean

Flange Face Aligned

Flange Holes Aligned

Studs / Bolts / Nuts / Threaded holes Clean & Lubricated

Flanged Joint Properly Tightened

Work Completed Satisfactory Date:

Maintenance manager:

For Internal

Circulation Only


Copyright:





ANNEXURE V

TORQUING SEQUENCE

For Internal

Circulation Only


Copyright:





Figure 1

Figure 2

For Internal

Circulation Only


Copyright:





Figure 3

For Internal

Circulation Only


Copyright:





Figure 4

For Internal

Circulation Only


Copyright:





Figure 5

For Internal

Circulation Only


Copyright:





REFERENCE 1. Shell DEP 2. E&M Documents, JG 3. Literatures from internet

rp flng tightening

Documents

maximum moment

reliance industries

contact field

pump pressure

tightening

reliance industries

flanged joints

pump pressure