technical committee on gas process safety agenda …€¦ · b. committee membership update...

51
Technical Committee on Gas Process Safety AGENDA NFPA 56 Second Draft Meeting February 3, 2016 10 AM-5 PM Web/Teleconference 1. Call to order. Franklin Switzer, Chair. 2. Introductions and Update of Committee Roster. (Attachment A) 3. Approval of Minutes from the First Draft Meeting on May 12-13, 2015. (Attachment B) 4. Staff Liaison Report a. Review Revision Cycle (Attachment C) b. Committee Membership Update (Attachment D) c. Revision Process Review 5. Review and Act on all 6 Public Comments on NFPA 56. (Attachment E) 6. Old Business. a. Discussion on De Minimis Quantities (Attachment F) b. Discussion on Onshore Gathering Lines – Presentation by Scott Neil c. Other Task Group Work (Attachment G) d. Review of Committee Inputs (Attachment H) 7. Other Business. a. Classification of Committee Members 8. Schedule Next Meeting. (First Draft meeting in the F2019 cycle must be between January and June 2018). 9. Adjournment.

Upload: vankhanh

Post on 05-Aug-2018

216 views

Category:

Documents


0 download

TRANSCRIPT

Technical Committee on Gas Process Safety AGENDA

NFPA 56 Second Draft Meeting February 3, 2016

10 AM-5 PM Web/Teleconference

1. Call to order. Franklin Switzer, Chair.

2. Introductions and Update of Committee Roster. (Attachment A)

3. Approval of Minutes from the First Draft Meeting on May 12-13, 2015. (Attachment B)

4. Staff Liaison Report

a. Review Revision Cycle (Attachment C)

b. Committee Membership Update (Attachment D)

c. Revision Process Review

5. Review and Act on all 6 Public Comments on NFPA 56. (Attachment E)

6. Old Business.

a. Discussion on De Minimis Quantities (Attachment F)

b. Discussion on Onshore Gathering Lines – Presentation by Scott Neil

c. Other Task Group Work (Attachment G)

d. Review of Committee Inputs (Attachment H)

7. Other Business.

a. Classification of Committee Members

8. Schedule Next Meeting. (First Draft meeting in the F2019 cycle must be between

January and June 2018).

9. Adjournment.

Attachment A: Committee Roster

2

Address List No PhoneGas Process Safety GPS-AAA

Janna E. Shapiro01/13/2016

GPS-AAA

Franklin R. Switzer, Jr.

ChairS-afe, Inc.85 Denison Parkway E #201Corning, NY 14830-2726

SE 8/9/2011GPS-AAA

Hocine Ait Mohamed

PrincipalSaudi AramcoAramco 11+ CampPO Box 31384Dhahran, 31311 Saudi Arabia

U 08/17/2015

GPS-AAA

Donald W. Bairley

PrincipalALSTOM Power Inc.175 Addison RoadPO Box 500Windsor, CT 06095Alternate: Stewart Wyatt

U 10/18/2011GPS-AAA

Denise Beach

PrincipalFM Global1151 Boston-Providence TurnpikePO Box 9102Norwood, MA 02062-9102

I 08/17/2015

GPS-AAA

Michael W. Bethany

PrincipalEclipse/CEC Combustion Safety, Inc.11699 Brookpark RoadParma, OH 44130-1135

M 10/29/2012GPS-AAA

Leon A. Bowdoin, Jr.

PrincipalConsultant1238 Riverside AvenueSomerset, MA 02726-2841

SE 03/01/2011

GPS-AAA

Christopher S. Buehler

PrincipalExponent, Inc.420 Lexington Avenue, Suite 1740New York, NY 10170Alternate: Ali Reza

SE 3/1/2011GPS-AAA

Paul W. Cabot

PrincipalAmerican Gas Association400 North Capitol Street, NWWashington, DC 20001

IM 3/1/2011

GPS-AAA

Bastiaan E. Cornelissen

PrincipalSpectrum Forensics, LLC3773 South Jason Street, Unit 2Englewood, CO 80110-3483

SE 08/17/2015GPS-AAA

Larry M. Danner

PrincipalGE Power & Water300 Garlington RoadGTTC Room 200DGreenville, SC 29615-0648Alternate: Gordon R. Smith

M 3/1/2011

GPS-AAA

Louis A. Donsbach, Jr.

PrincipalUS Steel CorporationOne North Broadway, 91E2/TS 526Gary, IN 46402-3101

U 03/05/2012GPS-AAA

Dan Dorran

PrincipalAtlas Copco Rental960 SW 7th StreetHermiston, OR 97838-2212

U 3/1/2011

GPS-AAA

John P. Doucette

PrincipalConnecticut Department of Public SafetyOffice of State Fire Marshal1111 Country Club RoadPO Box 2794Middletown, CT 06457-9294

E 03/03/2014GPS-AAA

Rob Early

PrincipalPraxair, Inc.PO Box 44Tonawanda, NY 14150-0044

M 08/09/2012

1

Address List No PhoneGas Process Safety GPS-AAA

Janna E. Shapiro01/13/2016

GPS-AAA

Dennis M. Kovach

PrincipalAmerican Electric Power1 Riverside Plaza, 18th FloorColumbus, OH 43215Edison Electric Institute

U 8/9/2011GPS-AAA

Kreg J. Levengood

PrincipalKiewit Power Engineers9401 Renner BoulevardLenexa, KS 66219

SE 3/1/2011

GPS-AAA

Robert C. Naper

PrincipalEnergy Experts International2 Anthony WayCanton, MA 02021-3559ANSI Gas Piping Technology Committee

SE 3/1/2011GPS-AAA

John R. Puskar

PrincipalPuskarCo9744 Elsmere DriveParma, OH 44130-1627

SE 3/1/2011

GPS-AAA

Alan Rice

PrincipalAmerican International Group, Inc. (AIG)Energy and Engineered Risk1690 New Britain AvenueFarmington, CT 06032Alternate: Sam Pagadala

I 3/1/2011GPS-AAA

Jerrold Sameth

PrincipalCompressed Gas Association, Inc.290 DeMott AvenueClifton, NJ 07011-3749Compressed Gas AssociationAlternate: Richard A. Craig

M 07/29/2013

GPS-AAA

Bruce J. Swiecicki

PrincipalNational Propane Gas Association21200 South LaGrange Road, Suite 353Frankfort, IL 60423

IM 3/1/2011GPS-AAA

Brett A. Wheelock

PrincipalOGE/EnogexOne Leadership Square, Suite 950211 North RobinsonOklahoma City, OK 73105Alternate: Scott Neil

M 03/07/2013

GPS-AAA

Peter J. Willse

PrincipalGlobal Asset Protection Services100 Constitution Plaza, 12th FloorHartford, CT 06103

I 3/1/2011GPS-AAA

Pat Convery

Voting AlternateCornerstone Energy Services172 Shrewsbury StreetWorcester, MA 01604

U 10/29/2012

GPS-AAA

Richard A. Craig

AlternateCompressed Gas Association14501 George Carter Way, Suite 103Chantilly, VA 20151Compressed Gas AssociationPrincipal: Jerrold Sameth

M 10/18/2011GPS-AAA

Scott Neil

AlternateDCP Midsteam LLC370 17th Street, Suite 2500Denver, CO 80202Principal: Brett A. Wheelock

M 07/29/2013

GPS-AAA

Sam Pagadala

AlternateAmerican International Group, Inc. (AIG)300 South Riverside PlazaChicago, IL 60606Principal: Alan Rice

I 10/29/2012GPS-AAA

Ali Reza

AlternateExponent, Inc.5401 McConnell AvenueLos Angeles, CA 90066-7027Principal: Christopher S. Buehler

SE 8/9/2011

2

Address List No PhoneGas Process Safety GPS-AAA

Janna E. Shapiro01/13/2016

GPS-AAA

Gordon R. Smith

AlternateGeneral Electric Company1 River RoadBuilding 40-271Schenectady, NY 12305-2551Principal: Larry M. Danner

M 08/17/2015GPS-AAA

Stewart Wyatt

AlternateALSTOM Power Inc.175 Addison RoadPO Box 500Windsor, CT 06095Principal: Donald W. Bairley

U 10/18/2011

GPS-AAA

Janna E. Shapiro

Staff LiaisonNational Fire Protection Association1 Batterymarch ParkQuincy, MA 02169-7471

08/04/2015

3

Attachment B: First Draft Meeting Minutes

7

Technical Committee on Gas Process Safety

MINUTES

May 12-13, 2015

American Gas Association

400 North Capitol Street, NW #450

Washington, DC 20001

(202) 824-7000

1. The meeting was called to order at 8:02 a.m. on May 12 and re-opened at 8:03 a.m. on May 13.

2. Committee Members and Guests introduced themselves.

Attendance

Technical Committee

Franklin Switzer (Chair), S-afe, Inc.

Donald Bairley, ALSTOM Power Inc.

Michael Bethany, Eclipse/CEC Combustion Safety, Inc.

Christopher Buehler, Exponent, Inc.

Paul Cabot, American Gas Association

Louis Donabach, US Steel Corporation

John Doucette, Connecticut Department of Public Safety

Rob Early, Praxair

Kreg Levengood, Kiewit Power Engineers

Robert Naper, Energy Experts International, Rep. ANSI Gas Piping Technology Committee

John Puskar, PuskarCo

Jerrold Sameth, Compressed Gas Association, Inc.

Bruce Swiecicki, National Propane Gas Association

Pat Convery, Cornerstone Energy Services

Richard Craig, Compressed Gas Association

Scott Neil, DCP Midsteam LLC

Sam Pagadala, American International Group, Inc. (AIG)

NFPA Staff

Daniel Gorham

Guy Colonna

Guests

Gordon Smith, General Electric

Karen Koenig, Compressed Gas Association

Bob Wilson, National Grid

Howard Murphy, Jr., Energy Experts International

Denise Beach, FM Global

Mike Soraghan, Environment & Energy News

8

3. Minutes from the Pre-First Draft Meeting on December 13, 2013 were approved.

4. Daniel Gorham gave a presentation on the document revision cycle and timeline as well as a

review of the standard development process.

5. New Business

A. Task Group Reports

i. References. Still seeking to determine what documents are referencing NFPA 56 and

what other committees may look to 56 to include so they can reference. Currently

looking at inclusion

ii. Related Documents Task Group. The task group members are: J Puskar (chair), C.

Buehler, P. Cabot, R. Craig, L. Danner, B. Bwiecicki, and F. Switzer.

iii. De Minimus Quantities. New chair (M. Bethany) and two new members (D. Beach

and L. Donsbach.

iv. Onshore Gathering Lines. A preliminary report of findings was developed by J.

Puskar and S. Neil (Attachment D). The task group members are: J. Puskar (chair),

S. Neil, P. Cabot, C. Buehler, and M. Bethany.

B. Reviewed all 23 Public Inputs and develop First Revisions and Committee Inputs.

6. Other Business.

A. Isolation. Determined that isolation is a fundamental component of the safe purging and

cleaning procedures and should be included in the document. Developed several committee

inputs on inclusion of isolation and seeking public comment. Formed Isolation Task Group;

members are: L. Donsbach (chair), R. Naper, R. Wilson, C. Buehler, M. Bethany, and K.

Levengood.

B. Emergency Plan. Based on review of public inputs and significant discussion created

Committee Input No. 7 and formed Emergency Plan Task Group to review possible

inclusion of emergency plan resources, including possible extraction from other NFPA

document. Task group members are: D. Beach (chair), J. Puskar, S. Pagadala, and C.

Buehler.

C. Document Road Map. Discussion about current scope of document (whether or not

gathering lines are within) and what may be required in the future.

7. Date/Location of Next Meeting. A Second Draft meeting in the F2016 cycle between

November 30, 2015 and June 2, 2016. The committee asked to staff to look into meeting

February 2-3, 2016 in Houston, TX.

8. The meeting adjourned for the day on May 12 at 4:34 p.m. and closed the meeting on May 13

at 12:52 p.m.

9

Attachment C: 2016 Fall Revision Cycle

10

2016 FALL REVISION CYCLE *Public Input Dates may vary according to standards and schedules for Revision Cycles may change.  Please check the NFPA Website for the most up‐to‐date information on Public Input Closing Dates and schedules at 

www.nfpa.org/document # (i.e. www.nfpa.org/101) and click on the Next Edition tab. 

Process Stage 

 

Process Step  

Dates for TC 

Dates forTC with 

CC   Public Input Closing Date*  1/5/15  1/5/15   Final Date for TC First Draft Meeting  6/15/15  3/16/15 

Public Input  Posting of First Draft and TC Ballot  8/3/15  4/27/15 Stage  Final date for Receipt of TC First Draft ballot  8/24/15  5/18/15 

(First Draft)  Final date for Receipt of TC First Draft ballot ‐ recirc  8/31/15  5/25/15   Posting of First Draft for CC Meeting    6/1/15   Final date for CC First Draft Meeting    7/13/15   Posting of First Draft and CC Ballot    8/3/15   Final date for Receipt of CC First Draft ballot    8/24/15   Final date for Receipt of CC First Draft ballot ‐ recirc    8/31/15   Post First Draft Report for Public Comment  9/7/15  9/7/15 

 

  Public Comment closing date   11/16/15  11/16/15   Final Date to Publish Notice of Consent Standards (Standards that 

received no Comments) 11/30/15  11/30/15 

  Appeal Closing Date for Consent Standards (Standards that received no Comments) 

12/14/15  12/14/15 

  Final date for TC Second Draft Meeting  5/2/16  1/25/16 Comment  Posting of Second Draft and TC Ballot  6/13/16  3/7/16 

Stage    Final date for Receipt of TC Second Draft ballot  7/5/16  3/28/16 (Second  Final date for receipt of TC Second Draft ballot ‐ recirc  7/11/16  4/4/16 Draft)  Posting of Second Draft for CC Meeting    4/11/16 

  Final date for CC Second Draft Meeting    5/23/16   Posting of Second Draft for CC Ballot    6/13/16   Final date for Receipt of CC Second Draft ballot    7/5/16   Final date for Receipt of CC Second Draft ballot ‐ recirc    7/11/16   Post Second Draft Report for NITMAM Review  7/18/16  7/18/16 

 

Tech Session  Notice of Intent to Make a Motion (NITMAM) Closing Date  8/22/16  8/22/16 Preparation  Posting of Certified Amending Motions (CAMs) and Consent 

Standards 10/17/16  10/17/16 

(& Issuance)  Appeal Closing Date for Consent Standards   11/1/16  11/1/16   SC Issuance Date for Consent Standards   11/11/16  11/11/16 

 

Tech Session  Association Meeting for Standards with CAMs  6/4‐7/17  6/4‐7/17  

Appeals and  Appeal Closing Date for Standards with CAMs  6/27/17  6/27/17 Issuance  SC  Issuance Date for Standards with CAMs  8/10/17  8/10/17 

 

Approved___  October 30, 2012                                                     Revised________________________ 11

Attachment D: Committee Membership

12

01/06/2016

Gas Process SafetyGPS-AAAName Representation Class Office

Distribution by %

Company

John P. Doucette Connecticut Department of PublicSafety

E Principal

1Voting Number Percent 4%

Denise Beach FM Global FM I Principal

Alan Rice American International Group, Inc.(AIG)

I Principal

Peter J. Willse Global Asset Protection Services XLGAPS I Principal

3Voting Number Percent 13%

Paul W. Cabot American Gas Association IM Principal

Bruce J. Swiecicki National Propane Gas Association NPGA IM Principal

2Voting Number Percent 8%

Michael W. Bethany Eclipse/CEC Combustion Safety, Inc. M Principal

Larry M. Danner GE Power & Water M Principal

Rob Early Praxair, Inc. M Principal

Jerrold Sameth Compressed Gas Association, Inc. CGA M Principal

Brett A. Wheelock OGE/Enogex M Principal

5Voting Number Percent 21%

Franklin R. Switzer, Jr. S-afe, Inc. SE Chair

Leon A. Bowdoin, Jr. Consultant SE Principal

Christopher S. Buehler Exponent, Inc. SE Principal

Bastiaan E. Cornelissen Spectrum Forensics, LLC SE Principal

Kreg J. Levengood Kiewit Power Engineers SE Principal

Robert C. Naper Energy Experts International GPTC/Z380 SE Principal

John R. Puskar PuskarCo SE Principal

7Voting Number Percent 29%

Hocine Ait Mohamed Saudi Aramco U Principal

Donald W. Bairley ALSTOM Power Inc. U Principal

Louis A. Donsbach, Jr. US Steel Corporation U Principal

13

Wednesday 1 6, Wednesday

Gas Process SafetyGPS-AAAName Representation Class Office

Distribution by %

Company

Dan Dorran Atlas Copco Rental U Principal

Dennis M. Kovach American Electric Power EEI U Principal

Pat Convery Cornerstone Energy Services U Voting Alternate

6Voting Number Percent 25%

24Total Voting Number

14

Attachment E: Public Comments

15

Public Comment No. 13-NFPA 56-2015 [ Section No. 1.1.2 ]

1.1.2 Nonapplication of Standard.

This standard shall not apply to the following items:

(1)

(2)

(3)

(4) Fuel-dispensing facilities covered by NFPA 52

(5)

(6)

(7)

(8)

(9)

(10)

(11) Commissioning and maintenance of equipment

(12) Vent lines from pressure relief valves or devices unless such vent lines are also used for purging offlammable gas piping systems

(13)

Statement of Problem and Substantiation for Public Comment

Justification:Gas gathering line systems are best addressed by DOT, (Department of Transportation) 40 cfr 191/192 regulations, AGA Purging Principles and Practices and the proprietary processes that many companies/contractors have in place. The NFPA 56 processes including leak checking, and purging with an inert gas may not be practical with buried pipe that can be many miles long without purge points and frequent isolation valves, plus condensed hydrocarbons that cannot be removed to a point of meeting the level of hydrocarbons NFPA requires in the vent effluent. Following either DOT, or AGA gives the end users appropriate Hot Work procedures to safely work under those conditions.

The DOT standards contain comprehensive planning provisions somewhat similar to those required in NFPA 56. The problem is that the DOT standard only includes gas transportation piping systems once the well head gas has been processed such as would be the case leaving a mid-stream gas processing plant. This makes no sense to exclude these pipelines while including gas gathering pipelines, since both pipelines systems can be technically equivalent in terms of flow, design pressure, and installation whether the lines are entering or leaving such a plant.

It is recommended that all lines technically equivalent to those under the jurisdiction of DOT 40 cfr 191/192 be treated the same way and thus remain outside the scope of NFPA 56. In these cases PHMSA 40 cfr 191 & 192 techniques have proven to be technically and safely adequate over many years. It is proposed however that addendum materials be added to address safe work practices within NFPA 56 that can be applied to these systems as non-mandatory information that may assist those performing this work.

AGA Purging Principles and Practices have a specific process to calculate rates of flow to safely remove hydrocarbons and then remove the air while minimizing mixing, keeping pressures below auto-ignition point and have been used successfully for many years. And it is recommended NFPA recognize the AGA method of purging as equally safe for servicing pipelines.

Neither DOT nor AGA recommends the use of natural gas to clean the pipelines of construction debris. This

* Piping systems covered by NFPA 2

* Piping systems covered by NFPA 51

* Piping systems covered by NFPA 51A

* Piping systems covered by NFPA 54

* Piping systems covered by NFPA 55

* Piping systems covered by NFPA 58

* LP-Gas (including refrigerated storage) at utility gas plants (see NFPA 59)

* LNG facilities covered by NFPA 59A

* Vehicle fuel dispensers

* Systems regulated by U.S. Department of Transportation (DOT) 49 CFR 100–199

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

1 of 10 1/6/2016 10:46 AM

16

provision of NFPA 56 is still applicable and should be followed.

Related Item

Committee Input No. 20-NFPA 56-2015 [Section No. 1.1.2]

Submitter Information Verification

Submitter Full Name: Scott Neil

Organization: DCP Midsteam LLC

Affilliation: GPA

Street Address:

City:

State:

Zip:

Submittal Date: Thu Nov 05 10:51:44 EST 2015

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

2 of 10 1/6/2016 10:46 AM

17

Public Comment No. 2-NFPA 56-2015 [ Section No. 2.3.2 ]

2.3.2 U.S. Government Publications.

U.S. Government Printing Publishing Office, 732 North Capital Street, NW, Washington, DC 20402 ,20401-0001 .

Title 29, Code of Federal Regulations, Part 1926, Safety and Health Regulations for Construction.

Title 49, Code of Federal Regulations, Parts 100–185, Hazardous Material Regulations.

Title 49, Code of Federal Regulations, Parts 190–199, Pipeline Safety Regulations.

Statement of Problem and Substantiation for Public Comment

Referenced current address for the Government Publishing Office.

Related Public Comments for This Document

Related Comment Relationship

Public Comment No. 3-NFPA 56-2015 [Chapter D]

Related Item

First Revision No. 1-NFPA 56-2015 [Section No. 2.3.1]

Submitter Information Verification

Submitter Full Name: Aaron Adamczyk

Organization: [ Not Specified ]

Street Address:

City:

State:

Zip:

Submittal Date: Sun Oct 11 20:40:51 EDT 2015

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

3 of 10 1/6/2016 10:46 AM

18

Public Comment No. 15-NFPA 56-2015 [ Section No. 5.1 [Excluding any Sub-Sections] ]

5.1  Persons whose  primary  du. es fall within   the scope of this standard shall

be provided with training that is consistent with the scope of their job activities and assigned tasks for thecleaning or purging work to be performed. Evidence of knowledge transfer shall be included as part of thetraining program.complete training that includes the following components:

(1) Safe work pracĀces

(2) The health and safety hazards associated with the Āammable   gases uĀlized

(3) Emergency response procedures

(4) Supervised, on   ?   the   ?   job training

(5)   An assessment of the person’s ability to perform the job duĀes assigned

Statement of Problem and Substantiation for Public Comment

The wording that was approved in FR 12 seemed confusing to me and is made vague by the statement "evidence of knowledge transfer." This suggested substitute language is taken from NFPA 58 and was reviewed and found acceptable to the US. Chemical Safety Board prior to being published in the 2014 edition of that code.

Related Item

First Revision No. 12-NFPA 56-2015 [Section No. 5.1 [Excluding any Sub-Sections]]

Submitter Information Verification

Submitter Full Name: Bruce Swiecicki

Organization: National Propane Gas Associati

Street Address:

City:

State:

Zip:

Submittal Date: Mon Nov 16 13:31:36 EST 2015

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

4 of 10 1/6/2016 10:46 AM

19

Public Comment No. 16-NFPA 56-2015 [ Section No. 5.1.3 ]

5.1.3

5.1.3  Training records, including dates of training, name of instructor(s),   content or curriculum covered

,and

evidence of knowledge transferdocumentaĀon of the person’s ability to perform the   job duĀes assigned , shall be maintained for a period not lessthan 5 years from the date of

compleĀon of the acĀvity.

Statement of Problem and Substantiation for Public Comment

The problem is that "evidence of knowledge transfer" is very vague. How much knowledge must be transferred? What is considered acceptable "evidence"? The proposed change is more clearly worded and is based on the provisions of NFPA 58, which have been found to be acceptable by the U.S. Chemical Safety Board prior to the publishing of the 2014 edition of NFPA 58.

Related Item

First Revision No. 13-NFPA 56-2015 [Section No. 5.1.3]

Submitter Information Verification

Submitter Full Name: Bruce Swiecicki

Organization: National Propane Gas Associati

Street Address:

City:

State:

Zip:

Submittal Date: Mon Nov 16 13:41:28 EST 2015

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

5 of 10 1/6/2016 10:46 AM

20

Public Comment No. 14-NFPA 56-2015 [ Section No. A.1.1.2(1) ]

A.1.1.2(1)

The application of NFPA 2 is included here for the convenience of the user:

Proposed Addendum language:

“Section 1. 1.2 exemption (10): US DOT 40 cfr 191/192 contains guidance on carefully planning flammablegas piping activities including purging gathering line systems into and out of service. Much of this guidanceaddresses techniques for relatively long underground runs where there may not be isolation valves orpurge points close by.

AGA Purging Principles and Practices incorporates the same flammability indexes as NFPA 56 but allowsthe purging (not cleaning) with air in a controlled, Engineering designed procedure that still requires properventing and monitoring.

When purging gas piping into or out of service procedures are to include positive isolation of pipingsystems, training for employees, and careful planning for any releases including consideration of ignitionsources. For guidance regarding purging procedures and planning for purging piping systems whereflammable gas may exist, see NFPA 56: Standard for Fire and Explosion Protection During Cleaning andPurging of Flammable Gas Piping Systems.

Pipelines should not be cleaned of construction debris by introducing natural gas at high rates anddischarging in an unsafe location without control or monitoring. This part of NFPA 56 is still applicable.”

1. 3 Application. [2:1.3]

1.3.1 This code shall apply to the production, storage, transfer, and use of hydrogen in all occupancies andon all premises. [2:1.3.1]

1.3.2 The use of hydrogen shall include stationary, portable, and vehicular infrastructure applications.[2:1.3.2]

1.3.3 The fundamental requirements of Chapters 1 through 8 [of NFPA 2] shall apply in addition to theuse-specific requirements provided in Chapters 9 through 20, as applicable. [2:1.3.3]

1.3.4 Exemptions. [2:1.3.4 ]This code shall not apply to the following:

(1) Onboard vehicle or mobile equipment components or systems, including the onboard GH2 or LH2 fuel

supply

(2) Mixtures of GH2 and other gases with a hydrogen concentration of less than 95 percent by volume

when in accordance with NFPA 55

(3) The storage, handling, use, or processing of metal hydride materials outside of metal hydride storagesystems defined in Chapter 3 [of NFPA 2]

[2:1.3.4]

Statement of Problem and Substantiation for Public Comment

Clarifies the use of AGA and DOT procedures for purging pipelines into and out of service.

Related Item

Committee Input No. 20-NFPA 56-2015 [Section No. 1.1.2]

Submitter Information Verification

Submitter Full Name: Scott Neil

Organization: DCP Midsteam LLC

Street Address:

City:

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

6 of 10 1/6/2016 10:46 AM

21

State:

Zip:

Submittal Date: Mon Nov 09 09:13:22 EST 2015

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

7 of 10 1/6/2016 10:46 AM

22

Public Comment No. 3-NFPA 56-2015 [ Chapter D ]

Annex D Informational References

D.1 Referenced Publications.

The documents or portions thereof listed in this annex are referenced within the informational sections ofthis standard and are not part of the requirements of this document unless also listed in Chapter 2 for otherreasons.

D.1.1 NFPA Publications.

National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02169-7471.

NFPA 1, Fire Code, 2015 edition.

NFPA 2, Hydrogen Technologies Code, 2016 edition.

NFPA 30, Flammable and Combustible Liquids Code, 2015 edition.

NFPA 30A, Code for Motor Fuel Dispensing Facilities and Repair Garages, 2015 edition.

NFPA 37, Standard for the Installation and Use of Stationary Combustion Engines and Gas Turbines, 2015edition.

NFPA 45, Standard on Fire Protection for Laboratories Using Chemicals, 2015 edition.

NFPA 51, Standard for the Design and Installation of Oxygen–Fuel Gas Systems for Welding, Cutting, andAllied Processes, 2013 edition.

NFPA 51A, Standard for Acetylene Cylinder Charging Plants, 2017 edition.

NFPA 52, Vehicular Gaseous Fuel Systems Code, 2016 edition.

NFPA 54, National Fuel Gas Code, 2015 edition.

NFPA 55, Compressed Gases and Cryogenic Fluids Code, 2016 edition.

NFPA 55, Compressed Gases and Cryogenic Fluids Code, 2016 edition.

NFPA 58, Liquefied Petroleum Gas Code, 2017 edition.

NFPA 59, Utility LP-Gas Plant Code, 2015 edition.

NFPA 59A, Standard for the Production, Storage, and Handling of Liquefied Natural Gas (LNG), 2016edition.

NFPA 69, Standard on Explosion Prevention Systems, 2014 edition.

NFPA 70 ®, National Electrical Code ®, 2017 edition.

NFPA 77, Recommended Practice on Static Electricity, 2014 edition.

NFPA 85, Boiler and Combustion Systems Hazards Code, 2015 edition.

NFPA 86, Standard for Ovens and Furnaces, 2015 edition.

NFPA 87, Recommended Practice for Fluid Heaters, 2015 edition.

NFPA 99, Health Care Facilities Code, 2015 edition.

NFPA 400, Hazardous Materials Code, 2016 edition.

NFPA 801, Standard for Fire Protection for Facilities Handling Radioactive Materials, 2014 edition.

D.1.2 Other Publications.

D.1.2.1 AGA Publications.

American Gas Association, 400 N. Capitol Street, N W, Washington, DC 20001.

AGA XK0101, Purging Principles and Practices, 2015.

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

8 of 10 1/6/2016 10:46 AM

23

D.1.2.2 AIChE Publications.

American Institute of Chemical Engineers, Center for Chemical Process Safety, Three Park Avenue, NewYork, NY 10016-5991.

Crowl, D. A., Understanding Explosions, 2003.

Guidelines for Hazard Evaluation Procedures, 3rd edition, 2008.

D.1.2.3 API Publications.

American Petroleum Institute, 1220 L Street, NW, Washington, DC 20005-4070.

API RP 2003, Protection Against Ignitions Arising Out of Static, Lightning, and Stray Currents, 7th 8 thEdition, 2008 2015 .

D.1.2.4 ASME Publications.

American Society of Mechanical Engineers ASME International , Two Park Avenue, New York, NY10016-5990.

ASME B31.1, Power Piping, 2014.

ASME B31.3, Process Piping, 2014.

D.1.2.5 ASTM Publications.

ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959.

ASTM E2079, Standard Test Method for Limiting Oxygen (Oxidant) Concentration for Gases and Vapors,2013.

D.1.2.6 U.S. Government Publications.

U.S. Government Printing Publishing Office, 732 North Capital Street, NW., Washington DC , DC20402 20401-0001 .

Kuchta, J. M., Investigation of Fire and Explosion Accidents in the Chemical, Mining, and Fuel-RelatedIndustries — A Manual, in U.S. Bureau of Mines Bulletin 680, U.S. Department of the Interior, 1985.

Title 49, Code of Federal Regulations, Parts 100–185, Hazardous Material Regulations.

Title 49, Code of Federal Regulations, Parts 190–199, Pipeline Safety Regulations.

U.S. Department of Labor, Occupational Safety and Health Administration (OSHA), Safety and HealthTopics, “Competent Persons,” http://www.osha.gov/SLTC/competentperson/index.html.

D.1.2.7 Other Publications.

Britton, L. G., “Using Heats of Oxidation to Evaluate Flammability Hazards,” Process Safety Progress,20(1), (March 2002):31–54.

Coward, J. F., and G. W. Jones, “Limits of Flammability of Gases and Vapors,” Bulletin 503, U.S. Bureau ofMines, Pittsburgh, PA, 1952.

Jones, G. W., et al., “Research on the Flammability Characteristics of Aircraft Fuels,” Wright AirDevelopment Center, Wright-Patterson AFB, OH, Technical Report 52-35, Supplement I, 1954.

Kuchta, J. M., et al., “Effect of Pressure and Temperature on Flammability Limits of ChlorinatedCombustibles in Oxygen-Nitrogen and Nitrogen Tetroxide-Nitrogen Atmospheres,” Journal of Chemical andEngineering Data, Vol. 13, No. 3, July 1968 (American Chemical Society, Washington, DC), p. 421.

Zabetakis, M. G., “Flammability Characteristics of Combustible Gases and Vapors,” Bulletin 627, U.S.Bureau of Mines, Pittsburgh, PA, 1965.

Zabetakis, M. G., and B. H. Rosen, “Considerations Involved in Handling Kerosine,” Proceedings, API, Vol.37, Sec. III, 1957, p. 296.

D.2 Informational References.

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

9 of 10 1/6/2016 10:46 AM

24

D.2.1 ASSE Publications.

American Society of Safety Engineers, 1800 E. Oakton Street, Des Plaines, IL 60018 520 N. NorthwestHwy., Park Ridge, IL 60068 .

ANSI/ASSE/ISO Z690.1, Vocabulary for Risk Management, 2011.

ANSI/ASSE/ISO Z690.2, Risk Management — Principles and Guidelines, 2011.

ANSI/ASSE Z690 /ISO 690 .3, Risk Assessment Techniques, 2011.

D.2.2 Other Publications. (Reserved)

D.3 References for Extracts in Informational Sections.

NFPA 2, Hydrogen Technologies Code, 2016 edition.

NFPA 51, Standard for the Design and Installation of Oxygen–Fuel Gas Systems for Welding, Cutting, andAllied Processes, 2013 edition.

NFPA 51A, Standard for Acetylene Cylinder Charging Plants, 2017 edition.

NFPA 54, National Fuel Gas Code, 2015 edition.

NFPA 55, Compressed Gases and Cryogenic Fluids Code, 2016 edition.

NFPA 58, Liquefied Petroleum Gas Code, 2017 edition.

NFPA 59, Utility LP-Gas Plant Code, 2015 edition.

NFPA 59A, Standard for the Production, Storage, and Handling of Liquefied Natural Gas (LNG), 2016edition.

NFPA 69, Standard on Explosion Prevention Systems, 2014 edition.

NFPA 77, Recommended Practice on Static Electricity, 2014 edition.

Statement of Problem and Substantiation for Public Comment

Referenced current SDO names, addresses, standard names, numbers, and editions.

Related Public Comments for This Document

Related Comment Relationship

Public Comment No. 2-NFPA 56-2015[Section No. 2.3.2]

Referenced current SDO names, addreses, standard names,numbers, and editions.

Related Item

Public Input No. 5-NFPA 56-2014 [Chapter D]

Submitter Information Verification

Submitter Full Name: Aaron Adamczyk

Organization: [ Not Specified ]

Street Address:

City:

State:

Zip:

Submittal Date: Sun Oct 11 20:47:25 EDT 2015

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

10 of 10 1/6/2016 10:46 AM

25

Attachment F: De Minimus Quantities

26

Shapiro, Janna

From: Bethany, Mike <[email protected]>Sent: Tuesday, January 5, 2016 8:21 AMTo: Chris Buehler; Franklin R. Switzer Jr.; Denise Beach; John PuskarCc: Shapiro, JannaSubject: RE: NFPA 56 Trask Group assignments

Franklin,  Sorry for the delayed response. The De Minimis task group has not done anything on this topic.   Regarding the goal of this task group I have a few comments/questions that I would welcome feedback on from this group and overall committee.  

1) The idea of De Minimis quantities for NFPA 56 (as I understand it) was inspired by Table 8.3.1 from NFPA 54 that provides pipe size and length criteria below which the piping does not need be purged before work can be performed. During discussions on this topic at the last committee meeting, I got the impression that Table 8.3.1 did not have much scientific explanation behind it. So using 54 as a basis for anything related to NFPA 56 would be speculative.  

2) NFPA 54 has a defined scope regarding the gases it applies to so the flammability range, specific gravity and other parameters are known. NFPA 56, per the scope, applies to “flammable gas piping”. To be honest, I’m not sure I completely grasp all of the possible gases this standard could cover. Obviously it covers natural gas inside electric plants and facilities that operate over 125 psig, and Hydrogen would be excluded, but what about flammable gases such as benzene that have a toxicity component as well as flammability. I know we have discussed flammable liquids and their vapors, but that would also have to be considered. I could be wrong, but if we go this route we would have to A) list all of the “flammable gases” that NFPA 56 covers and B) provide some de minimis criteria (size and length) for each of these gases based on their properties. 

3) We could go a different route, where we provide the end user of the code with some kind of calculation that allows them to solve for the de minimis quantity based on the gas’ chemical makeup. I have tried to think up various scenarios regarding the volume of gas necessary to engulf an average‐sized worker, and other things like that, that would allow the user to back‐solve the de minimis quantity, but I’m not sure that is the right idea.  

 So those are my thoughts on the de minimis quantities rules for NFPA 56. I am not trying to get out of putting in the work, I just want to make sure we are heading down a path that the rest of the committee agrees with. Thank you.   Sincerely,  

MikeBethany,P.E.GasHazardsManagerElsterThermalSolutionsCECCombustionSafety11699BrookparkRoadCleveland,OhioUSA44130M+1.440.590.6771O+1.216.749.2992F+1.216.398.8403mbethany@combustionsafety.com

www.elster‐thermal‐solutions.com

www.combustionsafety.com

27

Shapiro, Janna

From: [email protected]: Tuesday, January 5, 2016 8:30 AMTo: [email protected]; [email protected]; [email protected];

[email protected]: Shapiro, JannaSubject: Re: NFPA 56 Trask Group assignments

Mike I appreciate your always fantastic erudite analyses. I am of the opinion that one of the most important things the task forcecould do is to focus on just natural gas for now. I believe that would cover the vast majority of users of the document for now.

28

Attachment G: Task Groups

29

Task Groups for Gas Process Safety Committee 2017 Edition NFPA 56

Task Group Description Related Input Task Group chair Task Group Members

Isolation  Clarify the use of isolation in the document  

CI 7CI 26 CI 8 CI 9 

Louis Donsbach Robert NaperChristopher Buehler Michael Bethany Kreg Levengood 

References  Determine what documents are referencing NFPA 56 and what other committees may look to 56 to include so they can reference. 

Christopher Buehler Kreg LevengoodJerrold Sameth 

Related Documents  

Look at how and where to add references to NFPA 56 in other documents 

John Puskar Christopher BuehlerPaul Cabot Richard Craig Lawrence Danner Bruce Swiecicki Franklin Switzer 

De Minimus Quantities 

Investigate possibility of identifying piping systems by diameter or volume that present a minimal hazard and therefore could be exempted from some or all requirements of NFPA 56 

Michael Bethany Christopher BuehlerRichard Craig Dan Dorran Rob Early John Puskar Franklin Switzer Denise Beach Louis Donsbach 

Onshore Gathering Lines 

Analyze application of NFPA 56 to onshore gathering lines

CI 20PC 13 PC 14 

John Puskar Scott NeilChristopher Buehler Paul Cabot Michael Bethany 

30

Emergency Plan  Review possible inclusion of emergency plan resources 

CI 25 Denise Beach John PuskarSam Pagadala Christopher Buehler 

1/6/2016

31

Attachment H: Committee Inputs

32

Committee Input No. 23-NFPA 56-2015 [ Global Input ]

Update extracted text in Annex A from NFPA document to current editions.

Submitter Information Verification

Submitter Full Name: Dan Gorham

Organization: [ Not Specified ]

Street Address:

City:

State:

Zip:

Submittal Date: Wed May 13 12:50:42 EDT 2015

Committee Statement

Committee Statement: Update extracted text in Annex A from NFPA document to current editions.

Response Message:

Ballot Results

This item has not been balloted

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

1 of 20 1/6/2016 10:46 AM

33

Committee Input No. 9-NFPA 56-2015 [ Global Input ]

New Annex C: Methods of Isolation

Supplemental Information

File Name Description

56_F2016_CI-9_New_Annex_C.docx Figures provided by US Steel

Submitter Information Verification

Submitter Full Name: Dan Gorham

Organization: [ Not Specified ]

Street Address:

City:

State:

Zip:

Submittal Date: Wed May 13 09:06:14 EDT 2015

Committee Statement

Committee Statement: The committee has formed a task group to clarify the use of isolation in the document.

Response Message:

Ballot Results

This item has not been balloted

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

2 of 20 1/6/2016 10:46 AM

34

Committee Input No. 25-NFPA 56-2015 [ Detail ]

[NEW Annex Section A.4.1.1(3)(d)]

A.4.1.1.(3)(d) Emergency phone list including: emergency services, ambulances, hospitals, airrescue (helicopter services), local emergency planning committee, state response center, nationalresponse center, state and local law enforcement, fire departments, operators and contractors, gassupplier including distribution emergency personnel, emergency leak repair, and valve servicecontractors.

Submitter Information Verification

Submitter Full Name: Dan Gorham

Organization: [ Not Specified ]

Street Address:

City:

State:

Zip:

Submittal Date: Thu May 14 10:03:23 EDT 2015

Committee Statement

CommitteeStatement:

Formed a task group to identify major components of emergency response plan includingroles and responsibilities and contact lists.

Possible sources for content: NFPA 1 (Annex D), NFPA 1600, NFPA 1620.

ResponseMessage:

Ballot Results

This item has not been balloted

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

3 of 20 1/6/2016 10:46 AM

35

Committee Input No. 20-NFPA 56-2015 [ Section No. 1.1.2 ]

This was a First Revision that failed ballot.

1.1.2 Nonapplication of Standard.

This standard shall not apply to the following items:

(1)

(2)

(3)

(4) Fuel-dispensing facilities covered by NFPA 52, Vehicular Gaseous Fuel Systems Code .

(5)

(6)

(7)

(8)

(9)

(10)

(11) Commissioning and maintenance of equipment

(12) Vent lines from pressure relief valves or devices unless such vent lines are also used for purging offlammable gas piping systems

(13)

(14)

Supplemental Information

File Name Description

56_F2016_FR-20_A.1.1.2_14_.docx

Submitter Information Verification

Submitter Full Name: Dan Gorham

Organization: [ Not Specified ]

Street Address:

City:

State:

Zip:

Submittal Date: Wed May 13 11:17:37 EDT 2015

Committee Statement

Committee Statement: Clarify that gathering lines and upstream piping are not in the scope of this document.

* Piping systems covered by NFPA 2, Hydrogen Technologies Code

* Piping systems covered by NFPA 51, Standard for the Design and Installation of Oxygen–FuelGas Systems for Welding, Cutting, and Allied Processes

* Piping systems covered by NFPA 51A, Standard for Acetylene Cylinder Charging Plants

* Piping systems covered by NFPA 54, National Fuel Gas Code

* Piping systems covered by NFPA 55, Compressed Gases and Cryogenic Fluids Code

* Piping systems covered by NFPA 58, Liquefied Petroleum Gas Code

* LP-Gas (including refrigerated storage) at utility gas plants (seeNFPA 59, Utility LP-Gas PlantCode NFPA 59 )

* LNG facilities covered by NFPA 59A, Standard for the Production, Storage, and Handling ofLiquefied Natural Gas (LNG)

* Vehicle fuel dispensers

* Systems regulated by U.S. Department of Transportation (DOT) 49 CFR 100–199

* Natural gas gathering lines and other upstream piping not regulated by U.S. Department ofTransportation (DOT) 49 CFR 192

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

4 of 20 1/6/2016 10:46 AM

36

Response Message:

Public Input No. 12-NFPA 56-2015 [Section No. 1.1.2]

Public Input No. 13-NFPA 56-2015 [Section No. 1.1.2]

Public Input No. 14-NFPA 56-2015 [New Section after A.1.1.2(6)]

Ballot Results

This item has failed ballot

22 Eligible Voters

7 Not Returned

4 Negative with Comments

9 Affirmative All

1 Affirmative with Comments

1 Abstention

Not Returned

Bowdoin, Jr., Leon A.

Cirone, Therese

Convery, Pat

Donsbach, Jr., Louis A.

Kovach, Dennis M.

Levengood, Kreg J.

Naper, Robert C.

Negative with Comment

Danner, Lawrence M.

Having now had the opportunity to review the Task Force report referenced by John Puskar, I concur there is a“gap” in the published guidance for gathering line piping systems between oil field well heads and the firstdownstream processing plant. While such piping may be considered as “technically equivalent” to those pipingsystems downstream of the processing plant and that 49 CFR 191 and 192 CAN be applied, that application is notobligatory. NFPA 56 is an appropriate forum for filling this gap and I agree with the modification proposed in PublicInputs 12 and 14 to clearly specify when NFPA 56 can be applied to such gathering lines so as to fill the gap in thepublished guidance.

Puskar, John R.

I strongly disagree with this item. It is contrary to what the appointed task force on this subject recommended. It isnot clear that many of the committee members read the task force report. This change is also contrary to thestated purpose of this standard. There is no document in the oil and gas industry that today protects workers fromwell head related gas piping issues. This change prohibits the application of this standard to something that the oiland gas industry and the world desperately needs given that nearly almost 2 people die from fires and explosionsin this industry every month.

Rice, Alan

I vote affirmative to addition of #14 but negative to the deletion of NFPA Titles which were struck and notincluded.

Swiecicki, Bruce J.

I do not agree with deleting the titles of the standards. It's OK that the specific editions are referenced in Section2.2, but the reader should not have to search for the titles of each of those standards.

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

5 of 20 1/6/2016 10:46 AM

37

Affirmative All

Bairley, Donald W.

Bethany, Michael W.

Buehler, Christopher S.

Cabot, Paul W.

Dorran, Dan

Doucette, John P.

Early, Rob

Neil, Scott

Sameth, Jerrold

Affirmative with Comment

Willse, Peter J.

I vote affirmative to the addition of #14, but negitive on deleting the titles of the NFPA documents. Check theManual fo Style and other NFPA doecuments such as NFPA 1 Fire Code, NFPA 30 Flammable and CombustibleLiquids Code, and NFPA 101 Life Safety Code

Abstention

Switzer, Jr., Franklin R.

At this time I am uncertain of how I feel about this topic, further investigation on my part is required.

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

6 of 20 1/6/2016 10:46 AM

38

Committee Input No. 7-NFPA 56-2015 [ New Section after 3.2 ]

3.3.9 Isolation. A physical means of preventing infiltration of gas, vapor, and/or liquids past a defined pointin a pipe system or vessel.

3.3.9.1 Positive Isolation. A condition which exists after isolation has taken place and confirmed by designto eliminate any potential for infiltration of gas, vapor, and/or liquids past a defined point in a pipe system orvessel.

3.3.9.2 Non-Positive Isolation. A condition which exists after isolation has taken place and by designcannot eliminate the potential for infiltration of gas, vapor, and/or Liquids past a defined point in the pipesystem or vessel.

Submitter Information Verification

Submitter Full Name: Dan Gorham

Organization: [ Not Specified ]

Street Address:

City:

State:

Zip:

Submittal Date: Wed May 13 08:44:31 EDT 2015

Committee Statement

CommitteeStatement:

The committee has formed a task group to look at the inclusion of isolation in thedocument.

Response Message:

Public Input No. 15-NFPA 56-2015 [New Section after 3.2]

Ballot Results

This item has not been balloted

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

7 of 20 1/6/2016 10:46 AM

39

Committee Input No. 26-NFPA 56-2015 [ New Section after 3.3.7 ]

3.3.8 Hot work. Work involving burning, welding, or similar operation that is capable of initiating fires orexplosions. [51B, 2014]

Submitter Information Verification

Submitter Full Name: Dan Gorham

Organization: [ Not Specified ]

Street Address:

City:

State:

Zip:

Submittal Date: Tue May 26 16:39:17 EDT 2015

Committee Statement

Committee Statement: Extracting the definition of hot work as part of the inclusion of Isolation in the document.

Response Message:

Ballot Results

This item has not been balloted

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

8 of 20 1/6/2016 10:46 AM

40

Committee Input No. 8-NFPA 56-2015 [ New Section after 4.3 ]

4.4 Isolation. Flammable gas piping shall be isolated from the flammable gas supply and downstream pipingand equipment prior to cleaning and purging.

4.4.1 Positive isolations are required for the following:

(1) Confined space entry

(2) Hot work

Exception: Hot tapping

(3*) Areas where the accumulation of flammable and combustible gases is possible.

(4*) Areas where open pipe segments are located within proximity of oxidizing materials.

(5) Where determine by purge procedures or hazard assessment.

A.4.4.1(3) Open pipe segments inside buildings and or poorly ventilated areas.

A.4.4.1(4) Oxygen or chlorine piping and storage equipment

4.4.2* The following shall be considered positive isolation devices:

(1) Slip blank

(2) Blind flange

(3) Goggle valve

(4) Disconnect and cap or plug

(5) Double-block and bleed (with specific requirements of 4.4.3)

A.4.4.2 The following are common isolation valve issues. These need to be considered andplanned for when considering isolation method options.

(1) Valve Seat Deposits

(2) Valve Seat and Disc Degradation

(3) Stem and Bushing Failure

(4) Plug Valve Lubrication

The following are techniques that can be used to address isolation valve issues:

(1) Utilize clean out ports located on valve seating with steam, High-pressure water wash (withpacking gland), or Chemical injection.

(2) Steam trace valve body (For seat deposits)

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

9 of 20 1/6/2016 10:46 AM

41

(3) Lubrication of valve components (For most valve types)

(4) Rebuild or replacement of valve components (For all valve types)

4.4.3 Double-block and bleed systems shall be considered positive isolation methods afterconformation by measurement of acceptable and sustainable conditions between both blockvalves. If at any time the gas test results indicate unacceptable atmospheric conditions (>10%LEL) and /or pressure build-up between the double-block and bleed, it shall be reclassified dueto the condition as a non-positive isolation method.

4.4.4 Non-positive isolation is an acceptable means of isolation provided the procedure orhazard assessment considers application of appropriate engineering controls to mitigatehazards associated with gas migration beyond an isolation point.

4.4.5* The following shall be considered non-positive isolation devices:

(1) Plug valve

(2) Ball valve not designed for double-block and bleed

(3) Stopple

(4) Inflated bag

(5) Cryogenic Freeze plug

(6) Single Gate valve

(7) Butterfly valve

(8) Globe valve

(9) Double disc gate valve

A.4.4.5 These devices can be used for the purposes of installing a positive isolationdevice, as long as a satisfactory endpoint test has been achieved and monitoring isidentified in the procedure or hazard assessment.

4.4.6 The following shall be considered non-positive isolation methods:

(1) Water or Nitrogen sealable Double-disc Gate Valve

(2) Double-block and pressurize

(3) Water seal leg

(4) Double-block and bleed (if specific requirements listed in 4.4.3 are not met)

4.4.7 Non-positive isolation methods that are monitored at a frequency determinedin the purge procedure or hazard assessment for effectiveness shall be permitted tobe used to perform the following when acceptable endpoint results are achieved:

(1*) Installing a positive isolation device.

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

10 of 20 1/6/2016 10:46 AM

42

(2) Where determine by purge procedures or hazard assessment.

A.4.4.7(1) Non-positive isolation methods can be used temporarily while installing apositive isolation device.

Submitter Information Verification

Submitter Full Name: Dan Gorham

Organization: [ Not Specified ]

Street Address:

City:

State:

Zip:

Submittal Date: Wed May 13 09:02:59 EDT 2015

Committee Statement

CommitteeStatement:

The technical committee has formed a task group to look at the inclusion of isolation in thedocument.

Response Message:

Ballot Results

This item has not been balloted

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

11 of 20 1/6/2016 10:46 AM

43

Committee Input No. 14-NFPA 56-2015 [ Chapter B ]

[Update to current edition of AGA document, which is going into cycle]

Annex B Purge End Points for Common Flammable Gases

This annex is not a part of the requirements of this NFPA document but is included for informationalpurposes only.

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

12 of 20 1/6/2016 10:46 AM

44

B.1

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

13 of 20 1/6/2016 10:46 AM

45

The material in this annex is extracted in part from AGA XK0101, Purging Principles and Practices, and isreprinted here with permission.

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

14 of 20 1/6/2016 10:46 AM

46

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

15 of 20 1/6/2016 10:46 AM

47

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

16 of 20 1/6/2016 10:46 AM

48

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

17 of 20 1/6/2016 10:46 AM

49

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

18 of 20 1/6/2016 10:46 AM

50

Submitter Information Verification

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

19 of 20 1/6/2016 10:46 AM

51

Submitter Full Name: Dan Gorham

Organization: [ Not Specified ]

Street Address:

City:

State:

Zip:

Submittal Date: Wed May 13 10:30:02 EDT 2015

Committee Statement

CommitteeStatement:

The AGA document "Purging Principles and Practice" is being revised, which is the basis for thisAnnex. The committee will review the next edition of the AGA document and update this Annexas appropriate.

ResponseMessage:

Ballot Results

This item has not been balloted

National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

20 of 20 1/6/2016 10:46 AM

52