Minutes of Meeting – NFPA 2 Pre-first draft meeting

Golden, Colorado November 6th, 2012

9 AM – 1 PM MT Roll Call

Member Attending Marty Gresho Yes Member William Aaron Yes – via web Member Nick Barilo Yes- via web Member Robert Burgess Yes Member Lawrence Danner Yes – via web Member Joseph DiGiacomo Yes - via web Member Rob Early Yes- via web Member Dave Farese Yes Member Larry Fluer Yes Member Filippo Gavelli No Member James Goodloe No Member Stephen Goyette Yes – via web Member Karen Hall No Member Douglas Horne Yes – via web Member Thomas Joseph Yes – via web Member Mardy Kazarians No Member Y. Khalil no Member Brian Ladds Yes Member Glenn Mahnken Yes – via web Member Gregory Milewski No Member Lawrence Moulthrop Yes Member Marcia Poxson No Member Christopher Radley No Member Al Unione Yes – via web Member Nathan Weyandt No Member Robert Wichert No Member Jiann Yang No Member Laurie Florence Yes –via web Voting alternate William Collins No Alternate Richard Craig Yes – via web Alternate Scott Heyworth No Alternate Kuldeep Prasad No Alternate Tom Witte No Alternate

Susan Bershad Yes NFPA Staff Liaison Steven Mathison Yes – via web Guest Aaron Harris Yes Guest Bob Boyd Yes Guest Jerry Hayes Yes – via web Guest Spencer Quong Yes- via web Guest Jennifer Hamilton Yes – via web Guest Jeff Lachance Yes- via web Guest

1. The meeting was called to order by the chair, Marty Gresho, at 9:04 AM. 2. New members to the committee were introduced. There are five new members since our

last in-person meeting – • Brian Ladds, Calgary FD Enforcer, Haz Mat Specialist • Chris Radley. Altergy, Manufacturer • Nathan Weyandt, Southwest Research Institute, RT • Laurie Florence, UL, RT • Mardy Kazarians, Kazarians & Associates, Risk Specialist, Special Expert

2. The staff liaison, Susan Bershad, gave an overview of the new process and the schedule for public input.

• Public input is due January 4th, 2013 and can be submitted on-line or through the old paper system

• The first draft meeting will be held in Quincy, MA on June 4,5,6, 2013 3. Task Groups made presentations on the progress of their work to date. Copies of each

groups presentation are attached, along with the most recent list of task groups and members. The following task groups were represented:

• Oversight – Marty Gresho • Planning and Development – Carl Rivkin • Extracts – Larry Fluer • Refueling – Aaron Harris • Hydrogen Generation – Larry Moulthrop • Separation Distances – Al Unione • Reserved Sections – Larry Fluer • Explosions – Marty Gresho

4. The Tunnels, Blends, and Parking and Garages task groups were not represented, although Marty Gresho did provide a summary of the work on the Parking and Garages task group.

5. The Planning and Development task group has not met. There was no response to requests for meetings sent out to the members previously. Marty Gresho asked TC members if there was interest in continuing the efforts of this TG and if not should it be disbanded. The feedback was that this TG does need to continue its efforts and that they will be valuable but that the group may need some additional members to assist. This task group will be revisited at the 1st draft meeting in June 2013.

6. A separate and optional web meeting will be set up for Aaron Harris to present the results of the Emeryville Hydrogen incident.

7. An additional separate and optional web meeting will be set up for Susan Bershad to walk through the NFPA on-line public input process.

8. The next meeting will be the first draft meeting at NFPA headquarters in Quincy, MA on June 4, 5, and 6, 2013.

9. The meeting was adjourned at 1:00 PM MT.

NFPA 2 Committee Makeup

30 members, 5 alternates Enforcers – 10% Insurers – 3% Installers/Maintainers – 3% Manufacturer -30% Research/Testing Laboratory – 10% Special Expert – 27% User – 17% Substantial “hold” list for committee

New Process

Public Input versus Proposal First Draft Meeting First Draft versus ROP Public comments on First Draft Second Draft Meeting Second Draft versus ROC NITMAM More info on new process in Quincy in June

Terra System

New software system Public input and Public comments are made on-line

to the document Committee and public get to see a “live” document

and how changes will look Will make the editorial process easier in the long run Will “demo” public input submittal later.

Schedule for NFPA 2

F 2014 document Public Input due on January 4th, 2013 First draft meeting June 4, 5, 6 2013 in Quincy, MA Posting of First Draft and TC ballot – 8/2/2013 Posting of First Draft for public comment – 9/6/13 Public Comment Closing Date – 11/15/13 Last date for Second Draft Meeting – 5/2/2014

NFPA 2 Hydrogen Technologies

Chair Remarks Martin T Gresho, PE Pre 1st Draft Meeting

November 6, 2012 Golden, CO

1

Welcome!

• TC Members, Alternates and Guests • Status Update Meeting

– No “official work” today – Update on Task Group Progress – Invited Technical Presentation – General Chance to touch base on various issues.

• New TC Members • Membership Status

NFPA 2 Chair Remarks November 6, 2012 2

NFPA 2 Status

• Public Input Due 1/4/12 • HYD-AAA TC Scope

– This committee shall have primary responsibility for documents on the storage, transfer, production, and use of hydrogen. The use of hydrogen would include stationary, portable, and vehicular applications.

• NFPA2 Scope – 1.1 Scope. (Reserved) – 1.2 Purpose. The purpose of this code shall be to provide

fundamental safeguards for the generation, installation, storage, piping, use, and handling of hydrogen in compressed gas (GH2) form or cryogenic liquid (LH2) form.

Code Gap Assessment November 5, 2012 3

NFPA 2 Update

• TC Scope issues • Extracts • Primacy • NFPA 2/55 Scope Committee • Others may be needed

– NFPA 853 (Fuel Cells) – 80A (Parking Garages) – Others?

4

NFPA 2 Popularity & Use

• Increasing? • References (proposals) submitted to NFPA 1. • Reference proposals will be submitted to IFC. • Significant impact in visibility if approved.

5

The Code Pyramid

6

Level 1

Level 2

Level 3

Code Adoption

• Code Must be adopted Locally to be enforceable.

• Jurisdictions Vary Geographically – Federal – State – County – City – District

7

Local Codes

• Most Jurisdictions Adopt – Fire Code (two common models)

• IFC (vast majority of jurisdictions) • NFPA 1 (some jurisdictions)

• Local Law or Ordinance – Adopted Model Codes + local amendments

become law and legally enforceable

• Few jurisdictions go any further

8

Building Code Content • Chapters 1-10 are pure fire safety

– How big? How tall? – Construction Type

• 5 types – How to separate buildings? – Egress

• Dictates shape and size • Interior layout

• Remaining Chapters – – Accessibility – Structural – Construction Requirements – Other

9

Fire Code Content

• Ch 9, Fire Protection Systems – Where required – Sprinklers, fire alarms, standpipes, etc – Driven by Occupancy, Size, Height

• Business occupancy > 500 occupants requires fire alarm system.

• Industrial occupancy > 12,000 sq. ft. requires sprinklers. • Hazardous Occupancy – Any size requires sprinklers.

– Special Requirements – Hazardous materials like compressed gases, special occupancies, etc.

• NO “HOW TO DO IT” details

10

Level 2 Codes and Standards

• The HOW TO documents – How to install an electrical system: NFPA 70 (NEC) – How to install a sprinkler system: NFPA 13 – How to install a fire alarm system: NFPA 72 – How to…hydrogen: NFPA 2, NFPA 55, ….

11

NFPA 2 Update NFPA 52 scope change. Refueling in NFPA 52 (only). Public input same as Task Group Input Task Groups MUST submit proposals with substantiation by due date. Active NFPA 2 Task Groups

Oversight Planning and Development Extract Coordination Refueling H2 Generation Separation Distance Reserved Sections Explosion Control Road Tunnels Blends Garages & Service Garages

12

Questions?

13

NFPA 2 Explosion Control TG

• Met 3 times in 2012 • Goal is to revisit Annex K and populate

Chapter 9. • Group not generally satisfied with Annex K as

Enforceable Text. • New Research • Focus may be on NFPA 68/69?

NFPA 2 Chair Remarks November 6, 2012 1

This Cycle

• Limited input based on risk. • Barrier walls – one side, two sides, three sides • Weather Protection • Cargo containers GH2 in a box.

• Goal is to develop code content for these limited topics by due date.

Code Gap Assessment November 5, 2012 2

Members: Bill Aaron, Joe DiGiacomo, Larry Fluer,

Chuck McKnight, and Glenn Mahnken Staff Liaison: Susan Bershad

Task Group Assignment Purpose: to assist other TGs with the administrative tasks of

submitting changes to other documents. Unique position due to NFPA 2 being an extract (mostly) document.

Scope: The extracts task group will review the items used as an

extract source to determine the need for revision and/or update and track source documents for the other TGs to assure that any needed proposals are developed in a timely fashion. The task group will also review the development of NFPA 55 currently engaged in the A2012 code revision cycle to coordinate changes in text that serves as the basis for extract into NFPA 2. Individual proposals will be prepared to correlate requirements in NFPA 2 with NFPA 55.

Source Documents Revised in 2012/2013 Used in >75 Extracts

Source Document Change in Source Document

NFPA 1 – 499 matches [1: NFPA 55 – 1004 matches [55: NFPA 400 – >75 [400: or

[400,

NFPA 400, Hazardous Materials Code now serves as the source document for general provisions related to hazardous materials. In the process of being integrated into NFPA 1. Transition to NFPA 400 made in the 2013 Edition of NFPA 55.

Source Documents Used in Mandatory Sections 2.4

Out of 27 source documents 15 documents were not updated since the 2011 publication of NFPA 2.

One of the 27 documents was not used (NFPA 99). Four were used >/= 10 and <25 times. Four were used once. The three remaining source documents were

identified as NFPA 1 (2012), 55 (2013) and 400 (2013).

Update of Extracts Other than NFPA 1, 55 and 400

Extract text to be updated for extracts from source documents other than NFPA 1, 55 and 400 to be provided by the Staff Liaison (SL).

Should Chapter updates not be completed before January 4, 2013, a public input proposal is to be provided by the SL requiring that all extract text be updated with the anticipation that such updated text will be provided to the technical committee for consideration during the public input meeting for the First Revision document.

Task Group Organization TG Chapter Leads were

assigned to Chapters 3 through 8 (plus related annex material) as those are the chapters containing the bulk of the extract text from the three major source documents.

Paul May took an action to update existing extract text in legislative format in draft form for review by the TG Chapter Leads.

Chapters 3, 4 and 6 – L. Fluer

Chapter 7 – B. Aaron Chapter 8 – G. Mahnken Other support as required

– C. McKnight and J. DiGiacomo

Draft document showing updates in legislative text – P. May

Update extracts for source docs other than NFPA 1, 55 and 400 – S. Bershad

Review By Chapter Leads The TG Chapter Leads were asked to review the

DRAFT prepared by Paul and to perform the following: Identify the changes made in the source documents as

related to the use of extract material found in NFPA 2. Compare the revised text in the DRAFT with the revised

text in the source document and validate the changes. Where the extract text referred to a new source

document review the source document for applicability. For example, requirements previously under the purview of NFPA 1 may have reverted to NFPA 400. Impact – change in source document referenced.

TG Chapter Lead Review Cont’d. Where new provisions were added to the source document

related to the material extracted into the 2010 Edition of NFPA 2 identify those sections that should be considered for addition as extract text. For example, New definitions added Source document reformatted Conditions related to the original extract updated to include

additional text (usually part of a reformatting in the source document).

Provide a list of those sections identified to the task group chair for review and transmittal to P. May.

Task Group Action After the review by the TG Chapter Leads is complete

and the changes made to the draft are inserted the revised draft to be circulated to the Task Group for review and comment.

The task group will be asked to vote on the revised text on a Chapter by Chapter basis.

The task group work product will be submitted to the TC Chapter Leads in the Technical Committee no later than December 4, 2012. The work product will be in the form of a proposal on a Chapter by Chapter basis.

Status November 1, 2012 Paul May completed a first draft revision (Rev 3) for

extract text from source documents for NFPA 1, 55, and 400 on October 31, 2012.

Task Group Leads will forward requests for revision for Paul to work into the draft (Rev 4) which will then be reviewed by the Task Group and forwarded to TC Chapter Leads no later than December 4, 2012.

Updates of extract text for other source documents will be prepared by Susan Bershad.

Submittal To Process After review and approval by the TC Chapter Leads

documents for public input will be submitted by the Task Group to the Staff Liaison for compilation with updates to extract text on a Chapter by Chapter basis.

Substantiating statements will refer to the public input as a result of task group and effort by Chapter Leads.

NFPA 2 Oversight TG

• Met several times in 2012 • Membership is TG Chairs • Overall updates on progress of all Task Groups • Can serve to vet work products of other TGs.

– Open offer

• Will meet ~ 2 more times 1

NFPA® 2 Chapter 13 Task Group

Report 6nov2012

TG Members: Todd Carlson Aaron Harris Larry Danner Larry Moulthrop* Steve Goyette Rob Wichert Christopher Radley Marty Gresho Susan Bershad (NFPA)

TG Ch 13 Activity Summary

• Approach – TG meetings via webinar – Address Reserved Text – Address other Ch 13 issues

• Accomplished – Draft Reserved Text developed using template – New text developed for electrolyzer issues

• Indoor use, residential use, editorial • Other Outcomes

– B31 series and B31.12 reference, abstract material – ISO 22734-1 and 2 reference update and addition

All Ch 13 Reserved Sections developed

13.3.1.2 Indoor Installation of Electrolyzers 13.3.1.3 Outdoor Installation of Electrolyzers 13.4.1 Requirements for Hydrogen Storage

Systems Serving Electrolyzer Installations (Under Sub-Section “Storage”)

13.4.2.2 Indoor Storage (Under Sub-Section “Requirements for Hydrogen Storage Serving Reformer Installations”)

13.4.3 Requirements for Hydrogen Storage Systems Serving Gasifier Installations (Under Sub-Section “Storage”)

Other Outcome: Add B31 series and B31.12 Ref.

Recommend add B31 and B31.12 references 2.3.3 ASME Publications. American Society of Mechanical Engineers, Three Park Avenue, New

York, NY 10016-5990. ASME A13.1, Scheme for the Identification of Piping Systems, 2007. ASME B31, Code for Pressure Piping. ASME B31.3, Process Piping, 2006. ASME B31.12, Hydrogen Piping and Pipelines, 2011. ASME Boiler and Pressure Vessel Code, Section VIII, 2004. ASME International, Boiler and Pressure Vessel Code, “Rules for the Construction of Unfired Pressure Vessels,” Section VIII, 2007.

Other Outcome: Appropriate B31 series citations

Recommend B31 appropriate citation throughout Example: proposal for Chapter 13 13.2.2.1* Hydrogen piping, valves, and fittings from the

hydrogen generation equipment to other equipment including hydrogen storage systems shall conform to the appropriate section of ASME B31, Code for Pressure Piping.

*A.13.2.2.1 Some hydrogen generators, ex. reformers or gasifiers, may produce a gas mixture that is less than 95% hydrogen or above the temperature limits of ASME B31.12, Hydrogen Piping and Pipelines. In these cases another section of ASME B31 may be more appropriate.

Other Outcome: Update, Add ISO 22734-1 and -2

2.3.9 ISO Publications ……. ISO DIS 22734-1, Hydrogen generators using water

electrolysis process – Part 1: Industrial and commercial applications

ISO 22734-2, Hydrogen generators using water electrolysis process – Part 2: residential applications

Activity Details

Details of proposals reviewed by TG

Insert new 13.3.1.1.1. w/ Justification

13.3.1.1.1 Siting and Interconnecting. Siting and interconnection of water electrolyzers

shall be in accordance with the applicable requirements of 13.2 as modified or appended by this section.

/ New header and text for section/

Update, renumber 13.3.1.1.2

13.3.1.1.2 Product Standards. Water electrolyzers shall be listed or approved in accordance with ISO 22734-1, Hydrogen generators using water electrolysis process — Part 1: Industrial and commercial applications, or ISO 22734-2, Hydrogen generators using water electrolysis process — Part 2: Residential Applications [55:12.3.2.7.1]

/ update standard references (§2.3.9) to current, add

residential listing standard [55 ?]

Renumber, add title

13.3.1.1.3 Hazardous material containment. With the exception of gaseous hydrogen, electrolyzers that contain or utilize hazardous materials as defined by [the adopted building code] shall be designed and installed to contain such materials in accordance with [the adopted building code]. [55:12.3.2.7.2]

13.3.1.2 Indoor Installations of electrolyzers (reserved)

The requirements of this section addressing indoor installations of electrolyzers are supplemental to those specified by Section 13.2.

New text Justification / apply template

New 13.3.1.2.1 w/Justification 13.3.1.2.1* Electrolyzers listed or approved for residential occupancies

compliant with the GH2 content limit of 6.4.1.5.2 shall be permitted. A 13.3.1.2.1 Listing standards for residential electrolyzers, such as ISO22734-

2, allow manufacturers to list electrolyzers for residential applications such as energy conversion and vehicle fueling.

/ 6.4.1.5.1 only allows industrial and storage occupancies,

while 6.4.1.5.2 allows for ‘operation of equipment’ within 250 cf limit. Section 13.2.1.1 generally provides for listed and approved equipment

Appendix material explains existence of ISO22734-2 for

residential electrolyzer equipment listing

New 13.3.1.2.2 w/Justification 13.3.1.2.2 Indoor ventilation for electrolyzers shall be in accordance with manufacturer’s

installation instructions and with one of the following: 13.3.1.2.2.1 In compliance with section 6.17 13.3.1.2.2.2 Use constant ventilation sufficient to maintain an average H2 gas

concentration within the room below 25% LFL based on the maximum anticipated hydrogen leak as determined by the manufacturer’s installation instructions

13.3.1.2.2.3* Use a hydrogen detection system, using GH2 detection equipment per 6.12, that initiates ventilation per section 6.17 at a detected level of 10% LFL

13.3.1.2.2.4 If mechanical ventilation is required, a control interlock shall be provided to shut down the [electrolyzer] upon loss of ventilation. [55:12.3.2.8.5.4]

13.3.1. 2.2.5 If oxygen is released within the electrolysis installation room, sufficient ventilation shall be provided to prevent oxygen enriched atmospheres above 23.5% oxygen

A.13.3.1.2.2.3 One appropriate standard for H2 detectors is UL2064

/ Address thermal limitations of installing water based electrolysis equipment in freezing environments by allowing triggered dilution/ventilation systems similar to that allowed by the electrolyzer listing standard and/or service garages.

13.3.1.3 Outdoor Installations of electrolyzers (reserved)

The requirements of this section addressing indoor installations of electrolyzers are supplemental to those specified by Section 13.2.

13.3.1.3.1 No additional requirements. / template approach, requirements covered by

section 13.2

13.4.1 Requirements for Hydrogen Storage Systems Serving Electrolyzer

Installations. (Reserved) Per chapter 7 with these exceptions

13.4.1.1 In residential applications in conjunction with listed and approved residential electrolyzers and manufacturer’s instructions

13.4.1.2 With listed and approved electrolyzers and manufacturer’s separation distances.

13.4.1.3 Hydrogen piping, valves, and fittings from the electrolyzer to hydrogen storage system shall conform to ASME B31.12, Hydrogen Piping.

/Provide for piping from equipment to storage

13.4.2.2 Indoor Storage. (Reserved)

The requirements of this section addressing indoor storage of GH2 are supplemental to those specified by Section 10.4.1.

13.4.2.2.1 No additional requirements. / template applied

13.4.3 Requirements for Hydrogen Storage Systems Serving Gasifier

Installations. (Reserved)

The requirements of this section addressing gasifier GH2 storage are supplemental to those specified by Section 10.4.1.

13.4.3.1 No additional requirements. / template applied

NFPA 2 Refueling WG

Refueling WG Scope

• Review the items to be deleted from NFPA 52 to determine whether or not there are gaps that exist in NFPA 2 relative to the use of hydrogen as an alternative vehicular fuel. The task group will determine the applicability of deleted provisions within the context of NFPA 2 and prepare proposals to address any gaps discovered in NFPA 2 as a result of the removal of hydrogen from NFPA 52. Indoor refueling.

Approach

1. Rearrange (no edits, deletions or additions) – Use template outline – Develop a revised document for editing

2. Edit – change, delete or add material - Use the revised document for editing - Review all changes submitted by TG members - Provide table of edits and changes to Tech Comm.

Other outcomes

• Developed generic H2 dispenser P&ID with references to NFPA 2-2010 sections – possible annex material

Indoor Non- Public Fast Fill* Dispenser P&ID Code Compliant *Note – Fast Fill Doesn’t exist in IFC; limits H2 flow to 12 SCFM (0.027kg/min) IFC 2309.3.1.2 (3)

P&ID Tag Description Code/Standard Reference P&ID Tag Description Code/Standard Reference

ASV1a Auto shutoff (solenoid) valve (Source Valve)

6.20 - Source Valve 7.1.21 - Accessible manual or automatic emergency shutoff valve (HGV 4.4/HGV 4.6 Component Standards) PI1/PI2

Dispense delivery pressure indicator (6" circular mechanical gauge; 0-10000psig)

10.3.1.5.3 – indication of storage, dispenser discharge pressure 10.3.1.5.2 - 0.055in opening at inlet connection NOTE – a third pressure gauge at compressor discharge is also required (10.3.1.5.3)

ASV1b Auto shutoff (solenoid) valve (building isolation)

7.1.21.2 …at the point where the system piping enters the building 10.3.1.18.4 – building isolation valve required SRV1 Safety (Overpressure) relief

valve (6000psig)

10.3.1.4.2.3 – overpressure device shall be installed; 10.3.1.4.2.4 – setting shall not exceed 140% of service pressure 10.3.1.10.5 – inspected every 3 years

ASV2 Auto shutoff (solenoid) valve

7.1.21.2 …at the point of use 10.3.3.2.2.7 (A) – Automatic shutoff valve N1 Nozzle 10.3.1.14.7 – transfer system capable of depressurization to facilitate disconnection

10.3.1.15.1 – SAE J2600 nozzle required

EXV1 Excess Flow Device 7.1.22 Excess flow control – leak detection and emergency shutoff or excess flow control (Component Standard?) 10.3.1.18.3 - excess flow valve requirements

Vent Vent Pipe and Vent Pipe Termination 6.16 - CGA 5.5, 7.1.17,

FD1 Flame detector 10.3.1.19.1 – gas, flame detected at any point on the equipment 10.3.3.2.2.4 – Fire detection system tied to local visual and audible alarm Ventilation Required ventilation for indoor

fueling

10.3.3.2.2.2 – in accordance with 10.3.2.2.1.6 10.3.2.2.1.6 - required by clause (A) 10.3.2.2.1.6 (D) (1) continuous or activated by h2 detector

GD1, GD2 Gas detector

10.3.1.19.1 – gas, flame detected at any point on the equipment 10.3.3.2.2.7 (E) – GD2 added, inside of the dispenser housing (a class 1 Div 1 area) with similar requirements to 10.3.1.19.1 and with additional requirements: activation shuts down dispenser, visual/audible alarm and functions during maintenance

Estop x 3 Manual Emergency Stops

10.3.1.18.5 – local and remote located manual shutdown 10.3.3.2.2.6 – Emergency shutdown device similar to 10.3.1.18.5 with more specifid locaiton requirments 10.3.3.2.2.6 (A) – 3rd manual shutdown device on the dispensrer

BC1 Breakaway coupling (dispensing hose) 10.3.1.18.6 – breakaway coupling required – NGV 4.4 compliant, breaking force H1 Flexible dispensing /vent hose

10.3.1.1 – listed or approved 10.3.1.8 – Hose connections (note – no reference to HGV 4.4 10.3.1.11.2 – Hose assemblies 10.3.3.2.2.2 (H) – limited to 25ft. Protected from abrasion or driven over by vehicle

FLD1 Flow limiting device 10.3.3.2.2.2 (F) max fueling rate 2kg/min BC2 Breakaway coupling (vent

hose) Not required

Fire Alarm Fire Alarm System 10.3.3.2.2.5 – dispensing area local fire alarm system, pull box between 20 and 100 ft of dispenser, at nearest exit from area, pull boxes shutdown dispenser HV1 Hand Valve – “quarter turn”

manual shutoff 10.3.3.2.2.7 (B) - not required when ASV 2 is located immediately upstream and a control arm or ESD closes the valve

BSC1 Building Safety Circuit (Logic Controller)

10.3.1.11.6 – controller performs 5 sec pressure test prior to fueling 10.3.1.11.7 – repeat integrity check at 3000 psi 10.3.1.18.7 – control circuit requirement for manual reset after emergency stop activation 10.3.3.2.1.9 – manual restart after emergency activation 10.3.3.2.2.2 (C) automatic shutoff control when max fuel quantity per event or vehicle fueled to capacity 10.3.3.2.2.2 (G) – references 10.3.1.11.6 and 10.3.1.11.7 10.3.3.2.2.7 (G) – overpressure and over temperature sensing capabilities (assume that this could be communication with vehicle)

S

ASV1a

S

ASV1b

Dispenser Appliance Boundary

Building Boundary

S

N1

ASV2 BC1

BC2

PI2 SRV1

Vent

SAE J2600 Nozzle

FD GD1 BSC1 E-Stop

Bulk Storage Boundary

EXV1

E-Stop

Other Safety Requirements • Physical Protection – 7.17.7.3 • Ignition Source Control – 7.1.23 • Explosion control- 6.9 when

quantity exceeds quantities in Table 6.4.1.1

• Occupancy – 6.1.1.4, 7.1.1.3 • Qualified Operator – 10.3.3.1.1 • Minimum Room Volume – Table

10.3.3.2.2.2, 10.3.3.2.2.2 (D) for multiple dispensers

• Ceiling height – 10.3.3.2.2.2 (E)

Ventilation

Visual and Audible Alarm

PI1 FLD1

Mechanical Link to External Handle HV1

Fire Alarm System E-Stop

Pressure Temp

GD2

NFPA 2/NFPA 55 JOINT SEPARATION DISTANCES TASK GROUP Alfred Unione/Marty GreshoCo-Chairs November 6, 2012

Membership and Current Mission

Members (TC Represented)

• Al Unione (2) • Marty Gresho (55/2) • Larry Fluer (55/2) • Bill Houf • Jeff LaChance • Dave Farese (2) • Tom Witte (55/2) • Aaron Harris • Rich Craig (55/2) • Robert Wichert (2) • Carl Rivkin • Jerry Hayes • Rob Burgess (2) • Mardy Kazarians (2) • Susan Bershad NFPA (55/2)

Mission

• Provide updates to NFPA 2 and 55 to reflect new knowledge affecting separations distance requirements and backup science since last round of publications

• Address issues that arise during interim between publications – ex. ISO/NFPA Risk-Informed Approach

• Respond to public inputs and proposals

Background • Task Group 6 organized to contribute to 2011 first edition of

NFPA 2 • Separation distances are a key element of defense in depth for

safe deployment of H2 systems. However, purely deterministic approach to establishing separation distance requirements leads to unnecessary constraints on system capitalization and operation.

• Risk-informed approach to establishment of minimum separation distance requirements ensured that separation distances can be established on combination of what can happen and what can credibly happen (risk); integrated into a prescriptive format for implementing deployed systems.

• Risk-informed approach included in 2011 edition of NFPA 2.

Progress to Date • Task Group (TG) has been active with four teleconference

meetings in 2012. After a short hiatus, the TG has had three monthly teleconferences since July.

• TG developed comprehensive Work Plan that identified subtasks for completion prior to closure of input to next round of NFPA 2. Amended to include items for completion prior to next round of NFPA 55.

• Currently five ongoing sub-tasks • ISO/NFPA Comparison of Risk Informed Separation Distance

Methodology • Development of Modularization Approach • Integration of Requirements for Hybrid (GH/LH) Systems • Active Mitigation • Passive Mitigation

Sub-Task Descriptions Sub-Task Focus of Effort ISO/NFPA Comparison of Risk Informed Separation Distance Methodology

Provide comparison of differences between NFPA 2 Risk informed separation distances approach and ISO approach from EIGA, ostensibly derived from same data set. Support dialogue w EIGA to bring approaches closer together.

Development of Modularization Approach

Incorporate modularization into risk-informed approach to accommodate range of system designs and components, including dispensing, generation systems.

Integration of Requirements for Hybrid (GH/LH) Systems

Integrate separation distance methodology and requirements for hybrid systems to adequately address most LH installed technology

Active Mitigation Provide sufficient technical criteria to include credit for active mitigation to reduce separations distance requirements

Passive Mitigation Provide complete technical criteria for passive mitigation features to reduce separations distance requirements

Sub-task Groups & Outputs

Path Forward • Complete technical work and deliverables on five sub-

tasks • Identify appropriate input and schedule for integration into

NFPA 2 • Identify need for placeholders in NFPA 55

Members: Bill Aaron, Nick Barilo, Joe DiGiacomo, and Larry Fluer

Staff Liaison: Susan Bershad

1

Task Group Assignment Scope: Limit scope to creating content for “reserved”

sections throughout NFPA 2 except for the entire chapters (Ch. 17-20).

2

Task Group Approach Determine work plan given the current state of the

document. If the assigned chapter responsible parties do the work the RTG needs to: 1) establish contact, 2) present the list of affected sections, and 3) get a commitment from the chapter leads to develop

the specific proposals. 4) review the work of the Chapter groups to encourage

consistency in approach in areas where common approach is feasible.

3

Approach, Cont’d. What guidance is needed from the RTG for the chapter

responsible parties to reach a conclusion? Suggested review step i.e., RTG reviews the draft

information developed by the responsible chapter group so that the approach is more or less consistent.

Specifically, recognize how each of the chapters is designed to work.

Fundamentals apply to all excepting the use specific requirements when such requirements are specified. A reminder to the code developers is probably needed.

This could be something developed in brief written form.

4

Task Group Consensus Task group met in July and September to discuss

actions needed. September 27, 2012 a letter was sent to the Chapter

Leads containing a list of the reserved sections which contained “reserved” notations as a reminder of sections where potential requirements were needed. A spread sheet containing a list of “reserved sections” by

section number and circulated to the Chapter Leads.

5

Why Reserved Sections? The term reserved is normally used by a technical

committee to recognize that the committee that developed the material has an awareness that there is a need in that area, but do not feel that there is significant justification to create requirements on the subject for the time being with the justification being for any number of reasons, including: 1) a lack of existing data, 2) a limited amount of applied practices in the field, or

3) an inability to reach consensus.

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Why Reserved Sections? Cont’d. During development a template approach was used to structure

occupancy or use specific Chapters where text may have been extracted from existing source documents where a condition raised by the outline was not addressed by the source document. In these instances the term reserved was used to bring the matter to the attention of the committee so that future consideration would be given to the development of requirements. For example, Section 10.3.1.3.4 was reserved to establish

requirements for the use of “Composite Containers, Cylinders and Tanks” as it was recognized that such tanks are encountered in practice, and requirements for their use are limited at this time. The “reserved” designation for this subject keeps attention on the issue until such time as consensus is reached by the committee on the need, the content, or input from a member of the public at large.

7

Structure of NFPA 2 The RTG summarized the construction and structure of

NFPA 2 as a review for those working on specific chapters as to how the use or occupancy specific chapters were to work with the Chapters on fundamentals.

Suggestions were offered in areas where there was a common approach needed in use/occupancy specific areas where “storage” of hydrogen indoors/outdoors was specified (by the template). The suggestions included examples of how supplemental requirements could be used to augment the fundamentals where needed.

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Task Group Organization Task Group members were assigned to contact Chapter

leads and offer assistance as necessary and to encourage the establishment of a schedule that would lead to the preparation of public input by January 4, 2013.

Members were assigned to follow up with Chapter Leads as follows: Chapters 6, 7, 16 – Nick Barilo / Chapter Lead – Nick Barilo Chapters 10, 11 – Larry Fluer / Chapters 10 and 11 Lead Aaron

Harris Chapters 12, 13 – Bill Aaron / Chapter 12 Lead Bob

Wichert; Chapter 13 Lead Larry Moulthrop Chapters 14, 15 – Joe DiGiacomo / Chapter 14 and 15 Lead

Larry Danner

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Where are the Reserved Sections? Chapter and Chapter Lead Number of Reserved Sections

6 Barilo 1

7 Barilo 4

16 Barilo 1

10 Harris 14

11 Harris 1

12 Wichert 9

13 Moulthrop 6

14 Danner 6

15 Danner 6

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Request to Chapter Leads for: Offer to provide needed assistance from the RTG at the

direction of the Chapter Leads. Establish a schedule to provide deliverables in the

form of public comments from the Chapter Leads to address needed requirements for sections identified.

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Chapters 6, 7 and 16 Progress to Date Nick Barilo Task Group Contact Nick Barilo Chapter 6 Lead - General Hydrogen

Requirements Nick Barilo Chapter 7 Lead – Gaseous Hydrogen Nick Barilo Chapter 16 Lead - Laboratory Operations

12

Chapters 10 and 11 Progress to Date Larry Fluer TG Contact Aaron Harris Chapter 10 Lead - GH2 Vehicle Fueling

Facilities Aaron Harris Chapter 11 Lead - LH2 Hydrogen Fueling

Facilities

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Chapters 12 and 13 Progress to Date Bill Aaron Task Group Contact Bob Wichert Chapter 12 Lead - Hydrogen Fuel Cell

Power Systems: Work on Chapter 12 is complete. Larry Moulthrop Chapter 13 Lead - Hydrogen

Generation Systems: Work on Chapter 13 is ongoing and reported to be completed shortly.

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Chapters 14 and 15 Progress to Date Joe DiGiacomo Task Group Contact Larry Danner Chapter 14 Lead - Combustion

Applications: Completed with draft document 10/23/12 circulated back to the TG.

Larry Danner Chapter 15 Lead - Special Atmosphere Applications: Completed with draft document 10/23/12 circulated back to the TG.

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Submittals Public input submittals to be prepared by the Reserved

Sections Task Group and submitted on behalf of the task group and the Chapter Lead as appropriate.

The substantiating statement will indicate that the submittal is a joint product from the Chapter Lead and the task group undertaken at the request of the Technical Committee.

Reserved sections not otherwise addressed will remain reserved.

Target completion date – Mid December 2012.

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Task Group Name Purpose, Scope and Roster Oversight This task group will provide schedule oversight and monitor

progress of all the task groups established. TG Scope: Monitor progress of each task group established and provide assistance as needed to assure that the goal of each task group is reached in time for the ROP submittal date. Roster: Marty Gresho (Chair), Carl Rivkin, Larry Fluer, Aaron Harris, Larry Moulthrop, Al Unione, Rob Wichert, Marcia Poxson.

Planning and Development Purpose is to look forward toward new technologies and ID code barriers to progress and resolve them or fill gaps as needed. TG Scope: Identify and resolve code issues relative to developing and emerging technologies. Develop proposals for code changes and any needed research as needed. Retain the structural layout of NFPA 2 as code development progresses. Roster: Carl Rivkin (Chair), Al Unione, Rich Craig, Aaron Harris, Robert Wichert.

Extract Coordination Purpose is to assist other TGs with the administrative tasks of submitting changes to other documents. Unique position due to NFPA 2 being an extract (mostly) document. Scope: The extracts task group will review the items used as an extract source to determine the need for revision and/or update and track source documents for the other TGs to assure that any needed proposals are developed in a timely fashion. The task group will also review the development of NFPA 55 currently engaged in the A2012 code revision cycle to coordinate changes in text that serves as the basis for extract into NFPA 2. Individual proposals will be prepared to correlate requirements in NFPA 2 with NFPA 55. Roster: Larry Fluer (Chair), Bill Aaron, Glenn Mahnken, Joe DiGiacomo, Chuck McKnight, Paul May

Refueling Previously TG3 responsible for Ch 10 & 11. This TG should address issues created by the change in NFPA 52 scope. NFPA 2 needs to assume primacy here. Previous scope: This task group shall have responsibility for the portions of NFPA 2 pertaining to the handling and transfer of hydrogen related to the support of vehicle systems. This TG shall address the needed changes to NFPA 2 relative to the NFPA 52 scope change to remove hydrogen content. Scope: Review the items to be deleted from NFPA 52 to determine whether or not there are gaps that exist in NFPA 2 relative to the use of hydrogen as an alternative vehicular fuel. The task group will determine the applicability of deleted provisions within the context of NFPA 2 and prepare proposals to address any gaps discovered in NFPA 2 as a result of the removal of hydrogen from NFPA 52. Indoor refueling. Roster: Aaron Harris (Chair), Bill Houf, Jeff LaChance, Robert Wichert, Dave Farese, Larry Moulthrop, Nick Barilo, Doug Horne, Jennifer Hamilton, Spencer Quong, Greg Milewski, NREL. Rep (Rivkin/Burgess)

H2 Generation Previously part of TG4. Responsible for Ch 13. Scope: The Fuel Cell and H2 Generating Task Group will cover

Task Group Name Purpose, Scope and Roster installation of fuel cells and hydrogen generators drawing from the existing NFPA standards and developing new code language for installation of hydrogen generating equipment such as electrolyzer, reformers, and combination fuel cell and hydrogen gas generating equipment (small scale). Roster: Larry Moulthrop (Chair), Steve Goyette, Robert Wichert, Aaron Harris, Todd Carlson, Larry Danner.

Separation Distances Previously TG6. Joint with NFPA 55. Responsible for developing the separation distance table revisions in 55 and 2. Scope: : Validate or revise the existing prescriptive hydrogen separation distances in NFPA 55 using new research and continue use of risk informed processes. Tasks – Work with EIGA, mitigation factors, LH2. Roster: Al Unione (Chair), Larry Fluer, Bill Houf, Jeff LaChance, Dave Farese, Tom Witte, Aaron Harris, Rich Craig, Robert Wichert, Rob Early, Frederic Barth, NFPA 55, NREL (Rivkin/Burgess).

Reserved Sections Scope: Limit scope to creating content for “reserved” sections throughout NFPA 2 except for the entire chapters (Ch. 17-20). Roster: Larry Fluer (Chair), Nick Barilo, Bill Aaron, Joe DiGiacomo.

Explosions Previously TG 10. Responsible for Ch 9 which became Annex K. Scope – Bring annex into Ch 9 as warranted. Address roofless enclosures. Roster: Marty Gresho (Chair), Bill Houf, Aaron Harris, Bob Zalosh, Nick Barilo, Mardy Kazarians, Dave Farese, Jiann Jang, Jeff LaChance, Chuck McKnight.

Road Tunnels Previously TG 11. Responsible for Ch 18. Scope: Create at least minimal content to refer to DOT for bulk cargo transport and either extract from NFPA 502 or create new technical requirements as needed for fuel cell vehicles. Roster: Robert Wichert (Chair), Bill Houf, Steve Goyette, Aaron Harris, Jeff LaChance, Chuck McKnight, Filippo Gavelli.

Blends Proposed new TG to deal with emerging technology of blends. Scope: Create text or extract as needed to address hydrogen blends. Roster: Dave Farese (Chair), Tom Joseph, Marcia Poxson, Doug Horne.

Garages - Parking and Repair

Work was partially completed. Scope: Develop content for Chapters 17 &19. Roster: Marcia Poxson (Chair), NREL rep (Rivkin/Burgess), SAE Rep (TBD), Bill Houf, Jeff LaChance, Robert Wichert, Jiann Yang, Bob Boyd, Jennifer Hamilton..

The subject of developing representatives (primary contacts) by chapter for the document was discussed. The TC decided to create a listing of the following “go-to” persons for questions from the public or from the various task groups related to chapter material.

Chapter Title Primary Contact 1 Administration Martin Gresho 2 Referenced Publications Tom Joseph 3 Definitions Larry Fluer 4 General Fire Safety Requirements Nick Barilo 5 Performance Based Option Nick Barilo 6 General Hydrogen Requirements Nick Barilo 7 Gaseous Hydrogen Nick Barilo 8 Liquefied Hydrogen Nick Barilo 9 Explosion Protection Martin Gresho 10 GH2 Vehicle Fueling Facilities Tom Joseph 11 LH2 Hydrogen Fueling Facilities Tom Joseph 12 Hydrogen Fuel Cell Power Systems Robert Wichert 13 Hydrogen Generation Systems Larry Moulthrop 14 Combustion Applications Larry Danner 15 Special Atmosphere Applications Larry Danner 16 Laboratory Operations Nick Barilo 17 Parking Garages Marcia Poxson 18 Road Tunnels Robert Wichert 19 Repair Garages Marcia Poxson 20 Fuel Blends Dave Farese

Annex A Explanatory Material See Chapter Representatives

Annex B Administration Chuck McKnight Annex C Sample Adopting Ordinance Chuck McKnight Annex D Physical Properties of Hydrogen Tom Witte Annex E Determination of Separation Distances for

Bulk Gaseous Hydrogen Systems Al Unione

Annex F Example of Class C Furnace Operational and Maintenance Checklist

Larry Danner

Annex G Supplementary Information on Explosion Hazards and Protection in Laboratories

Nick Barilo

Annex H Safety Tips for Compressed Gas Users Chuck McKnight Annex I Design Standard References (Should have

been OSHA only. Annex mixes requirements between Annex E supporting information and OSHA. Needs to be resolved).

Larry Fluer

Annex J Design Standard References Dave Farese

Chapter Title Primary Contact Annex K Hydrogen Explosion Control Martin Gresho Annex L Informational References Tom Joseph