Agenda - nfpa.org · Update the following referenced documents with the latest edition of the referenced standard as follows: ... edition. API 620, ... temperature at 2550°F

Agenda

Technical Committee on LP-Gas at Utility Gas Plants Marriott Tampa Airport

Tampa, Florida

January 26 and 27, 2010

0. Administrative A. Meeting Schedule. The Committee will meet at the Marriott Tampa Airport on Tuesday, and Wednesday January 26 and 27, 2010. Meeting schedule: Tuesday January 26: 8:30 AM to 3:00 PM Tuesday January 26: 3:00 PM to 7:00 PM, Tour of Sea-3 Terminal Wednesday, March 27: 8:30 AM to 5:00 PM B. NFPA 58 Meeting. The NFPA 58 committee meeting on comments was held in October. The NFPA 58 Report on Proposals and a Preprint incorporating the proposals is available, and the NFPA 58 Report on Comments is expected to be available for use by the NFPA 59 committee in late December, 2009. C. Committee Membership. Since the last meeting the followings new member were added:

Mr. Mike Zimmer, alt to Mr. Ervin

Richard Philbin, Washington Gas

Michael Stroud, Vectren Energy (reappointed as Principal)

The committee currently has 18 members. D. Minutes of the last meeting.

1. NFPA 59 Document Status: A. NFPA 59 Schedule The next edition of NFPA 59 will carry a 2012 date. Key cycle dates following the meeting are:

Mail Ballot on Proposals: 3/19/10, or earlier

Mailing of the ROP: 6/25/10

Comment Closing Date: 9/3/10

Meeting on Comments: 11/5/10, or earlier (Note: If possible, the meeting will be held in conjunction with a meeting of the NFPA 58 committee)

Mail Ballots on Comments: 11/19/10, or earlier

Mailing of the ROC: 2/25/11

Notice of intent to make a motion (NITMAN): 4/8/11

B. Reminder of new NFPA meeting procedure As NFPA 59 is in the Annual Meeting, 2011 cycle, anyone who wishes to propose an amendment to the Committee’s report can file a notice of intent to make such a motion.

If no notices are received, the document will be issued on 5/31/11 Standards Council meeting the document will be available in approximately August 2011.

If a notice is received, approval of the document discussed at NFPA Meeting in June 2011, where the motion will be heard. If this occurs, the 2011 edition of NFPA 59 will be available in approximately September 2011.

2. Action on Proposals. The committee must act on all public proposals, and can add committee proposals. The proposals will be sent separately. Allowable motions are:

1. Accepting the Proposal. 2. Rejecting the Proposal. 3. Accepting the Proposal in principle but with changes in the proposed wording. 4. Accepting the Proposal in part. 5. Accepting the Proposal in principle in part but with changes in the proposed

wording of the part accepted. Report from task groups: i Members are encouraged to discuss proposals and should come to the meeting with a recommended action and reason, if other than to accept. The results of this work will be published as the Committee’s Report on Proposals by June 25, 2010. REMINDER. The minutes of the last meeting identified that ASCE 56 is out of print. It is referenced in A.6.3.4.2. Can something else be referenced? If not, the paragraph must be deleted. 3. Report on AGA Supplemental Gas Committee activities. 4. DOT Rulemakings affecting NFPA 59.

DOT has issued a notice of proposed rulemaking that would affect how NFPA 58 and NFPA 59 are adopted in 49 CFR Part 192. The closing date for comments has passed, and the final rule is anticipated. 5. NFPA 58 Revisions that affect NFPA 59 Report from the Task Force on NFPA 58 Proposals, Goodchild, Macdissi, Lucas. Significant actions taken by the NFPA 58 committee include removal of the requirement for pressure relief valve stacks on larger containers, and new requirements for cathodic protection of underground containers. 6. Tour of Sea-3. Committee member are invited to visit the Sea-3 propane import terminal in Tampa. We will leave at 3 PM on Tuesday January 26 for the visit. We will be traveling by carpool, so please let us know if you will have a car available for committee members who do not. 7. Time and place of the next meeting: The next meeting will address any comments received on the Report on Proposals. It must be held between the comment closing date, 9/3/10 and 11/5/10.

Report on Proposals – June 2011 NFPA 59_______________________________________________________________________________________________59- Log #CP16

_______________________________________________________________________________________________Technical Committee on LP-Gases at Utility Gas Plants,

Review entire document to: 1) Update any extracted material by preparing separate proposals todo so, and 2) review and update references to other organizations documents, by preparing proposal(s) as required.

To conform to the NFPA Regulations Governing Committee Projects.

_______________________________________________________________________________________________59- Log #82

_______________________________________________________________________________________________John Ritzmann, c/o Mike Osmundson

Revise text as follows:1.1.3 Installations that have an aggregate capacity of 4000 gallons or less and which serve a distribution system of less

than 100 customers shall conform to NFPA 58, Liquefied Petroleum Gas Code.The scope of NFPA 58 has been changed during the most recent revision cycle. This proposal is a

response to that change.

_______________________________________________________________________________________________59- Log #57

_______________________________________________________________________________________________John L. Ritzmann, Consultant

New text to read as follows:1.3.4 The provision of Chapters 11 , 12 and 13 are to

be applied to all facilities retroactively.I believe this change in retroactivity was the committee’s original intent and is consistent with the

requirements of DOT 192. Note the related proposal to remove portions of Chapter 11 that contain design requirementsto

_______________________________________________________________________________________________59- Log #4

_______________________________________________________________________________________________Jim Goodchild, Xcel Energy

Revise text to read as follows:Update the following referenced documents with the latest edition of the referenced standard as follows:API 620, Design and Construction of Large, Welded, Low Pressure Storage Tanks, 2002 2008 edition.ASME B31, Process Piping, 2006 2008 editionASTM A 47, Standard Specification for Feritic Malleable Iron Castings, 2004 2009 edition.

Updates referenced documents to the latest edition of the referenced standards.

1Printed on 12/21/2009

Report on Proposals – June 2011 NFPA 59_______________________________________________________________________________________________59- Log #55

_______________________________________________________________________________________________Nneka Assing, American Gas Association

Update the following referenced documents with the latest edition of the referenced standard asfollows:NFPA 17, Standard for Dry Chemical Extinguishing Systems, 2002 2009 edition.NFPA 290, Standard for Fire Testing of Passive Protection Materials for Use on LP-Gas Containers, 2003 2009

edition.API 620, Design and Construction of Large, Welded, Low-Pressure Storage Tanks, 2002 2008 edition.


_______________________________________________________________________________________________59- Log #CP11


Adopt the preferred definition from the NFPA Glossary of Terms as follows:Methods of providing for fire control or fire extinguishment. [ 2008]

This definition is the preferred definition from the Glossary of Terms. Changing the secondarydefinition to the preferred definition complies with the Glossary of Terms Project.

_______________________________________________________________________________________________59- Log #CP12


Adopt the preferred definition from the NFPA Glossary of Terms as follows:The Interstate Commerce Commission, which had jurisdiction over high-pressure cylinders and cartridges

prior to 1967. [ 2007]This definition is the preferred definition from the Glossary of Terms. Changing the secondary

definition to the preferred definition complies with the Glossary of Terms Project.

_______________________________________________________________________________________________59- Log #CP13


Adopt the preferred definition from the NFPA Glossary of Terms as follows:An occupancy in which products are manufactured or in which processing, assembling,

mixing, packaging, finishing, decorating, or repair operations are conducted. [ 2009]This definition is the preferred definition from the Glossary of Terms. Changing the secondary





Adopt the preferred definition from the NFPA Glossary of Terms as follows:The maximum gauge pressure permissible at the top of

completed equipment, a container, or a vessel in its operating position for a design temperature. [ 2006]This definition is the preferred definition from the Glossary of Terms. Changing the secondary


_______________________________________________________________________________________________59- Log #CP15


Adopt the preferred definition from the NFPA Glossary of Terms as follows:Appliances or equipment that, because of their intended modes of use or operation, are

capable of providing sufficient thermal energy to ignite flammable gas-air mixtures. [ 2009]This definition is the preferred definition from the Glossary of Terms. Changing the secondary


_______________________________________________________________________________________________59- Log #58


Revise text to read as follows:4.2* Odorizing Gases.All LP-Gases injected into a gas distribution system shall be odorized by the addition of a warning agent of such

character that they are detectable by a distinct odor down to a concentration in air of not over one-fifth the lower limit offlammability.

.This change makes it clear that odorization is not required for propane in storage, only propane that is

sent out to a distribution system for use by customers. This is consistent with DOT 192.625 which states that natural gaswill be odorized prior to entering the distribution system.

_______________________________________________________________________________________________59- Log #27


Revise 4.5.2.1 as follows:4.5.2.1 Electrical equipment and wiring installed in unclassified areas shall be in accordance with NFPA 70, National

Electric Code, for nonclassified locations.4.5.2.2 requires certain areas of the plant to be classified however there may be other areas that an

owner classifies. The current 4.5.2.1 and 4.5.2.2 will not address this situation. The revision to 4.5.2.1 above will be allinclusive. 4.5.2.2 will still deem certain areas as mandatory classification.




Delete all of row “G” (Vehicle Fuel Dispenser). “I” (Special Buildings or rooms for Storage ofCylinders), and “K” (Cylinder Filling) from Table 4.5.2.2 as these locations are not associated with NFPA 59 facilities.

Removes from table electrical classified areas not found in NFPA 59 facilities. Table 4.5.2.2 is not anextraction from NFPA 58 and does not need to maintain all the NFPA 58 table criteria.

_______________________________________________________________________________________________59- Log #26


Delete 4.5.8.3 and revise 4.5.3.2 as follows:4.5.3.2 Welding, cutting, and hot work shall be conducted in accordance with the provisions of NFPA 51B

and only at times and places authorized.Consolidates discussion of welding, cutting and hot work into one location.



_______________________________________________________________________________________________Mindy Wang, Ampco Safety Tools

New text to read as follows:To add new text to read as follows:

Portable electric tools or ferrous tools and extension lights capable of igniting LP-Gas shall not be permittedwithin classified areas except where the area has been identified as free of flammable gases.

· NFPA 59 can better mitigate the flammability hazards by restricting the use of ferrous tools, whichcan be an ignition source.· NFPA 30, Flammable and Combustible Liquids, Chapter 6, section 6.5.1 lists frictional heat or sparks as sources of

ignition of flammable vapors and precaution shall be taken to control ignition sources.· NFPA 921, Guide for Fire and Explosion Investigations 2008 Edition, Chapter 5 Basic Fire Science Table 5.7.1.1

Reported Burning and Sparking Temperature of Selected Ignition Sources under Mechanical Sparks lists a Steel tooltemperature at 2550°F. When working with flammable gases, liquids or vapors, a potential hazard arises because of thepossibility that sparks produced by steel or iron tools can become an ignition source.· FM Approvals LLC, formerly Factory Mutual Research Corporation, (FM) is an international organization recognized

by the U.S. government as a Nationally Recognized Testing Laboratory (NRTL) for scientific research and productcertification. Product approval from a NRTL assures that products meet consensus-based standards of safety to providethe assurance, required by OSHA, that these products are safe for use in the United States workplace. FM ApprovalStandard 7910, Spark Resistant Tools is used as guidance to evaluate tools intended for use in environments wherethere is a risk of ignition of flammable materials, dusts or vapors resulting from sparks created by iron and steel handtools. These tools prevent the ignition of flammable materials, dusts or vapors by mechanical sparks created by the useof iron and steel hand tools slipping or striking a surface. These tools provide a solution in place of steel ferrous tools inflammable environments.· Recognizing the potential for steel tools to be an ignition source in flammable environment, the Occupational Safety

& Health Administration (OSHA) provides guidance in booklet 3080 Hand and Power Tools, 2002 revised, “iron andsteel hand tools may produce sparks that can be an ignition source around flammable substances. Where this hazardexists, spark-resistant tools should be used.”· LPG manufactures regularly require the use of “non-sparking” tools under Handling and Storage section in the

MSDS’s for their products. A few examples: Praxair, Air Liquide, BOC gases, Sinclair Oil, Imperial Oil Products,International Industrial Gases , Gasco, Apache Corporation, Markwest Energy Partners, Stoody Industrial and WeldingSupply.

· A few documented incidents involving steel sparks and tools as an ignition source:· OSHA inspection# 2272953, two employees were assigned the job of tending a 100 gallon (water jacket) reactor

kettle of methyl methacrylate in the mixing room. Employee #1 used a metal wrench (visegrips) to pry open the cover ofa kettle. The wrench handle struck the angle iron support for the agitator motor, producing a spark. Employee #2noticed the spark, which was immediately followed by a massive “fire ball”. Both employees were engulfed in thefireball. Employee #3 came to the area to assist the other employees. The investigation states that non-sparking toolswere not provided for the employees. All three employees received first and second degree burns on their face, armsand abdomen. Employee #2 also received some third degree burns. All three employees were hospitalized.

· OSHA inspection# 300983459, employee #1, a valve installer, and employee #2, a valve installer assistant, wereinstalling an external valve assembly on a liquefied petroleum gas (LPG) tanker trailer when there was a sudden releaseof a liquefied petroleum gas. Gas ignited and the flash fire engulfed both employees, causing them to sustain seriousburns. Employee#1 was hospitalized. Employee#1 died later from complications. The investigation revealed that thevapor ignited due to the presence of an ignition source, which may include a spark produced from ferrous-containinghand tools static caused by release of the compressed LPG vapors, and/or the presence of other ignition sources.OSHA issued a violation of Section 5(a)(1) for exposing employees to the hazards of fire and deflagration due to releaseand ignition of LPG or propane. As a minimum, control and prevention of sources of ignition, such as open flames,sparks must be addressed.

· OSHA inspection# 108916925, employee #1 was servicing a liquid propane gas cylinder for forklifts from hispropane truck. He apparently cross-threaded the hose line to the cylinder. When he opened the hose valve to beginservicing, the resulting pressure surge caused a hose disconnection and a gas discharge to the atmosphere. When heattempted to close the hose valve, the valve handle came off the valve stem and the employee could not close thevalve. The gas was ignited either by a metal-to-metal spark or (most probably) by the truck engine's exhaust. Employee


Report on Proposals – June 2011 NFPA 59#1 was burned over 30 percent of his body in the fire/explosion.

· OSHA inspection# 102826625, employee #1 worked for a company that cleans paints, and replaces valves in LPand MAPP gas cylinders. Before removing an old valve, Employee #1 would open the valve to let the residual gas leakout on the loading dock. When there was a large quantity of cylinders, Employee #1 would invert the cylinder so theresidual gas could vent faster. Employee #1 had an accumulation of a gas and air mixture around his work area. Thevapors were ignited either by a spark from the metal screwdriver he was using to open a damaged valve or by an openflame burner approximately 40 ft away. There was a fire and explosion. Employee #1 sustained 2nd- and 3rd-degreeburns on the lower half of his body.

· OSHA inspection# 124728437, employee #1 and a coworker, both maintenance mechanics, were working in a 30in. by 36 in. manhole at a Space Age Fuel gas station in Gresham, OR. Employee #1 was trying to change a fuel pump,while the coworker watched from outside the manhole. Employee #1 was using an Allen wrench to loosen the bolts onthe fuel pump lead when he apparently created a spark that ignited the gas fumes in the manhole, causing an explosion.Employee #1 suffered burns to his face, hands, arms, and legs. He was transported to hospital for treatment.

· OSHA inspection# 304994304, employer was cited for violating Section 5(a)(1) of the Occupational Safety andHealth Act of 1970, often referred to as the General Duty Clause which requires employers to "furnish to each of hisemployees employment and a place of employment which are free from recognized hazards that are causing or arelikely to cause death or serious physical harm to his employees" for exposing employee to a fire/explosion hazard whileperforming maintenance operations on LP gas tanks with ferrous tools. Among other methods, one feasible andacceptable abatement method to correct this hazard is to implement the use of non- sparking tools when working on ornear LP Gas tanks, as recommended in Suburban Propane's material safety data sheet for propane.”

· OSHA inspection# 305641094, employer was cited for violating Section 5(a)(1) of the Occupational Safety andHealth Act of 1970 violation for exposing employees to a fire and/or explosion hazard from the ignition of Propane gasduring the filling of cylinders for failure to use non-sparking tools to tap on the cylinder's filler valve to seat and close thevalve's check spring.

Without the specification for non-ferrous tools, ferrous tools are likely to be used which can be a source of ignition.


Report on Proposals – June 2011 NFPA 59

_______________________________________________________________________________________________59- Log #72


4.5.4 Vehicles and other mobile equipment that constitute potential ignition sources shall beprohibited within diked areas or within 50 ft (15 m) of containers that contain LP-Gas, flammable liquids, or flammablerefrigerants, except where authorized and at loading or unloading at facilities specifically designed for the purpose.

Delete 4.5.4 as 4.8.4 already address the issue.

_______________________________________________________________________________________________59- Log #59


Revise text to read as follows:Delete 4.8 and 4.8.1 through 4.8.4.Replace 4.5.5 with 4.8.5.Renumber 4.8.6 as 4.5.6.Remove the extraction reference after [58:6.22.3]

Paragraphs 4.8.1 through 4.8.4 are redundant to the requirements in 4.5.3 and 4.5.3 is worded moreclearly. The stray current paragraph in 4.8.5 is redundant to 4.5.5 but uses better English. The lightning protectionrequirements in 4.8.6 are moved to the end of the list in 4.5.3 and the extraction reference to NFPA 58 is incorrect.

_______________________________________________________________________________________________59- Log #28


Delete 4.8.3.2 and Delete 4.8.3.1:4.8.3.2 Welding and cutting, shall be conducted in accordance with the provisions of NFPA 51 B, Standard for Fire

Prevention During Welding, Cutting, and Hot Work. Portable electric tools and extension lights, and capable of ignitingLP-Gas shall not be permitted within the classified areas specified in Table 4.5.2.2.

This is covered in 4.5.3.2 and 4.5.3.3.

_______________________________________________________________________________________________59- Log #28a

_______________________________________________________________________________________________

James R. Goodchild, Xcel Energy Inc. / Rep. American Gas AssociationDelete text as follows:

4.8.5 Electrical grounding and bonding shall be provided as required by NFPA 70, National Electrical Code.The NFPA 59 Technical Committee requested Bill Young and Jim Goodchild to clarify this statement in

comparison to 4.5.1.3 as they appeared to contradict each other in the current proposals. 4.8.5 is now redundant with4.5.1.3 and no longer serves a purpose. Therefore, deletion of 4.8.5 is requested.




Add new 4.9 as follows:4.9 Construction & Modification Records.4.9.1 Each plant (new construction or modified) after the issue date of this standard shall retain records of materials of

construction for process equipment piping systems containing LPG and other flammable fluids including their supportingsystem and foundations.4.9.1.1 The records shall verify that the material properties meet the requirements of this standard and other

referenced standards and align with materials identified for use in the design of the process system for the specificfacility.4.9.1.2 Components such as pumps, compressors, valves, or similar assemblies are not required to have records of

materials of construction. These assemblies shall require documentation that the assembled component has beendesigned and constructed per design with materials appropriate for the duty they serve.4.9.3 The records for normally unattended facilities shall be permitted to be stored at the unattended facility or at

another location.4.9.1.3 The records shall be retained for the life of the component, building, foundation, and support system, while in

use, and for 3 years thereafter.The addition of these requirements improves alignment of NFPA 59 with similar requirements in

Federal Pipeline regulations in 49 CFR Part 192 for gas transmission and distribution piping systems and LNG facilityrecords of construction in 49 CFR 193 and NFPA 59A requirements.

_______________________________________________________________________________________________59- Log #73


Revise text to read as follows:5.3.1.2 The nameplate shall be attached so as to minimize corrosion of the nameplate or its fasteners fastening

means and so as not to contribute to corrosion of the container.The term “fastening means” is not a defined, and rewording the statement adds clarity to the

requirement.

_______________________________________________________________________________________________59- Log #5


Revise text to read as follows:Where When the container is buried, mounded, insulated, or otherwise covered so as to obscure the

nameplate, the information contained on the nameplate shall be duplicated and installed on adjacent piping or on astructure in a clearly visible location.

The term “where” is used in many locations throughout the standard and it is not appropriately used.“Where” normally refers to a location, however in many uses in the standard it is used to denote an occurrence.Therefore, the term “when” should be used. The TC needs to determine how it wants to handle this in the 59 standard.Otherwise the NFPA organization needs to address this in their MOS.




Add a new first line to Table 5.4.1.2 to read:

***Insert Table 5.4.1.2 here***

The table is revised to cover smaller tanks which can be used in plants coming under NFPA 59.

_______________________________________________________________________________________________59- Log #3

_______________________________________________________________________________________________

John L. Ritzmann, Alexandria, VA

Containers larger than 2,000 gal (7.6 m3) water capacity shall be located in accordance with Table 5.4.1.2 withrespect to the distance between containers, the distance between containers and the nearest important building orgroup of buildings not associated with the utility gas plant, or a line of adjoining property that can be built upon.Containers of 2,000 gal (7.6 m3) water capacity and less shall be located in accordance with NFPA 58,

, Table 6.3.1.

Underground containers of 2,000 gal ((7.6 m3) and less shall be located in accordance with NFPA 58,Table 6.3.1.

The scope of NFPA 59 covers Utility Gas Plants with a storage capacity of 4,000 gallons or more, butit does not provide guidance for locating containers in installations supplying a distribution system using above groundcontainers with a water capacity of 2000 gallons and less. In addition, the guidance for locating underground containersdoes not distinguish between container sizes at all. The result of this is that an installation that utilizes several smalltanks has no clearance requirements for aboveground containers and an unduly restrictive requirement of 50 feet forsmall underground containers. The potential result of these two regulations is to guide installers away from the muchsafer underground installations.This has not been questioned in the past, but a responsible installer has asked for a formal interpretation to clarify this

point. I do not know why he wants to utilize smaller containers, but I do not see why he should be prohibited from it ifthat is his desire. The changes will help him create the safe installation he is seeking.

Installers are increasingly supplying multiple customers via a piped distribution system that islocated in public streets. This type of distribution system is regulated by DOT Title 49 regulations. The original visionfor NFPA 59 was to regulate larger natural gas peaking plants and municipal supply plants supplying such a system.With the newer practice of installing smaller plants to serve fewer customers, the regulations in NFPA 59 need to servethis type of installation with correct requirements that are not unduly restrictive.I believe that this TIA is in accordance with at least the following main items listed in the official NFPA definition of what

constitutes an "Emergency":(a) The document contains an error or an omission that was overlooked during a regular revision process.(e) The proposed TIA intends to accomplish a recognition of an advance in the art of safeguarding property or life

where an alternative method is not in current use or is unavailable to the public.


59/LCP2/Tb5.4.1.2/A2011/ROP

Water Capacity of Each

Container

Minimum Distances

Between Containers

Between Containers

gal m3 ft m ft m

501-2000 1.9+ - 7.6 25 7.6 3 1



New text to read as follows:Amend Table 5.4.1.2 to add clearances requirements for smaller containers:

***Insert Table 5.4.1.2 here***

Add a new paragraph 5.4.2.4 (4) Underground containers of 2,000 gal ((7.6 m3) and less shall be located 10 feet (3m)or less from the nearest important building or group of buildings, line of adjacent property that can be built upon orbuildings associated with the utility gas plant.

Plants with storage capacities of over 4,000 gallons supplying propane vapor to smaller gasdistribution systems are being built using smaller containers than the smallest container (2,000 gallons) shown in Table5.4.1.2. This proposal is intended to replace TIA 59 08-1 which refers the user of the Code to NFPA 58. There is nointent to change any of the existing requirements for separation distances.

_______________________________________________________________________________________________59- Log #61


Revise text to read as follows:5.4.1.5 If water for container fire protection is provided only by hose streams, containers shall be oriented so that their

longitudinal axes do not point toward other containers, aboveground liquefied natural gas tanks, and flammable liquidstorage tanks on the same or adjoining property

This requirement limits the installation of all containers to a single row. When this requirement was firstintroduced in the 1974 edition, it only applied to containers where there was minimal fire protection (hose streams only).Currently, aboveground containers intended to serve a storage facility subject to NFPA 58 are permitted to be located inparallel rows with 25 feet clearance between groups or 50 feet if only hose streams are provided, making it impracticalto convert storage from use for marketing to utility use.

_______________________________________________________________________________________________59- Log #74


5.4.2.5 When the provisions of 5.9.3 and 5.9.4 are met, the minimum distance from an ASMEcontainer to a building shall be reduced by one-half for ASME containers of 2001 gal through 30,000 gal (7.6 m3through 114 m3) water capacity. [58:6.3.2]

Reworded to improve clarity as there is not a dimension based on size of container.

10Printed on 12/21/2009

NFPA 59/L#60/Tab5.4.1.2/R

Water Capacity of Each

Container

Min Dist Between Containers Min Dist from Built Upon

Gal m3 ft m ft m

< 125 <0.5 0 0 0 0

125 - 250 0.5 – 1.0 0 0 10 3

251 - 500 1.0 + - 1.9 3 1 10 3

501 – 2000 1.9 + - 7.6 3 1 25 7.6



Revise text to read as follows:5.4.2.7 Spacing of other plant components shall be located in accordance with Table 5.4.2.7 with respect to the

various distances from other components.

Table needed to consolidate the many spacing requirements in the standard.Note: Supporting material is available for review at NFPA Headquarters.

_______________________________________________________________________________________________59- Log #6


Revise text to read as follows:Containers shall be securely anchored when. Where necessary to prevent flotation due to possible high

floodwaters around aboveground or mounded containers, or high water table for those underground and partiallyunderground., containers shall be securely anchored. [ 6.6.1.6]

Revising the sentence structure improves clarity of the requirement.

_______________________________________________________________________________________________59- Log #76


Revise text to read as follows:5.8 Point of Transfer Loading and Unloading Facility Spacing.5.8.1 Point of Transfer Loading and unloading connections shall be at least 75 ft (23 m) from uncontrolled sources of

ignition, process areas, control buildings, offices, shops, and other occupied or important plant structures, other thanequipment directly associated with the transfer operation.

Replacing the previous verbiage with defined term to improve clarity.

_______________________________________________________________________________________________59- Log #77


Revise text to read as follows:5.8.2 Point of Transfer Filling pipe inlet terminals shall meet all the following requirements:(1) The filling pipe inlet terminal shall not be located inside a building.(2) Such terminals shall be located at least 25 ft (7.6 m) from a container and shall be supported and protected from

physical damage by vehicular movement.(3) Filling pipe inlet terminals shall be located at least 5 ft (1.5 m) behind any barriers provided for such protection.

Replacing the previous verbiage with defined term to improve clarity.

11Printed on 12/21/2009



Delete text as follows:5.9.2.1 Where all the provisions of Section 5.9 are complied with, the minimum distances from important buildings and

the line of adjoining property that can be built upon to underground and mounded ASME containers of 2001 gal through30,000 gal (7.6 m3 through 114 m3) water capacity shall be reduced to 10 ft (3.0 m). [58:6.26.2.1]

Delete text as it is in conflict with 5.4.2.5

_______________________________________________________________________________________________59- Log #79


Delete the following text:No part of an underground ASME container shall be less than 10 ft (3.0 m) from a building or line of adjoining

property that can be built upon, and no part of a mounded ASME container that is installed above grade shall be lessthan 5 ft (1.5 m) from a building or line of adjoining property that can be built upon.

Delete 5.9.2.3 as 5.4.2.5 already address the issues.

_______________________________________________________________________________________________59- Log #71


Revise text to read as follows:5.9.3 ASME Container Appurtenances. The provisions in 5.9.3.1 through 5.9.3.5 shall be required for ASME

containers of 2001 gal (7.6 m3) and larger through 30,000 gal (7.6 m3 through 114 m3) water capacity referenced inSection 5.9.

Containers larger than 30,000 gallons were intended to be required to be equipped with internal valvesas are the containers under 30,000 gallons.

_______________________________________________________________________________________________59- Log #7


Revise text to read as follows:A positive manual shutoff valve shall be installed immediately next to as close as practical to each internal

valve. [ 6.26.3.4]Replacement of a vague term per the MOS table in 2.2.2.3.

12Printed on 12/21/2009



Revise text to read as follows:Enclosure of container downcomers used to conduct spilled LP-Gas away from materials subject to failure upon

exposure to liquid LP-Gas shall be permitted. [ 12.5.3]The term “downcomers” are not defined in NFPA 58, or in this standard, and therefore this requirement

is not understood by many. It also is primarily installed in LNG applications, but not typical in Refrigerated Propanesystems, and this should be removed from the standard.

_______________________________________________________________________________________________59- Log #63


Revise text to read as follows:6.5.8.1 Where automatically controlled sump pumps are used, they shall be equipped with an automatic shutoff device

that prevents their operation when exposed to LP-Gas temperatures. the flash temperature of liquid LP-Gas. In addition,the sump pumps shall be de-energized if flammable vapors in excess of 25 percent of the lower flammable limit aredetected within the impoundment area. [58: 12.5.8.1]

The more complete description of requirements for controlling automatic sump pumps was changed inthe 2008 Edition of NFPA 58 but not in the 2008 Edition of NFPA 59.

_______________________________________________________________________________________________59- Log #68


New text to read as follows:Table 6.7.1 Minimum Distances for LP Gas Containers that Operate above 15 psi (103 kPa)

The expanded title is used in NFPA 58 and it explains the difference between table 6.7.1 and 6.7.2without having to refer to the text.

_______________________________________________________________________________________________59- Log #69


New text to read as follows:Table 6.7.2 Minimum Distances for LP-Gas Containers that Operate Below 15 psi (103kPa)

The expanded title is used in NFPA 58 and it explains the difference between table 6.7.1 and 6.7.2without having to refer to the text.

13Printed on 12/21/2009



Revise text as follows:7.1.1.1 The design and fabrication of process piping systems shall be in accordance with ASME B 31.3, Process

Piping, except as modified by the provisions of this chapter and any applicable federal pipeline regulations. Specialconsiderations shall be given to the behavior of the piping material upon possible fire exposure per chapter 13.7.1.1.2 Where fire exposure to equipment is anticipated, the material shall be selected for fire exposure or protected

from fire exposure.Delete 7.1.1.2 and put back the final line from the 1995 edition of section 4.1.1.1. The use of the term

"anticipated" could be taken to infer where fire exposure is expected rather than possible. And add a reference toChapter 13.

_______________________________________________________________________________________________59- Log #31


Revise text as follows:7.1.6 Gaskets used to retain LP-Gas in flanged connections in piping containing liquid LP-Gas and LP-Gas vapor shall

be as follows:(1) Resistant to the action of LP-Gas(2) Made of metal or other material that is confined in metal that has a melting point over 1500°F (816°C) or protected

against fire exposure(3) Replaced, where when a flange is opened(4) Nonmetallic or insulating where insulating fittings are required

Replace “where” with “when” for clarity.

_______________________________________________________________________________________________59- Log #32


Revise text as follows:7.2.1.2 Cast-iron valves, piping, and fittings shall be prohibited on LP-Gas containers and their connections except for

container valves or fittings that are made of malleable or nodular ductile iron.Change nodular to ductile to match word use in other sections such as 7.1.1.3(2).

_______________________________________________________________________________________________59- Log #33


Revise text as follows:7.2.3 Excess-flow valves, where required by this code, shall close automatically and shall be selected and installed for

rated flows based on process requirements it protects. at those rated flows of vapor or liquid as specified by themanufacturer.

By stating that it “will close automatically at those rated flows of vapor or liquid specified by themanufacturer” it could be interpolated that it must be tested to insure that it closes at the rated flows after it is put intooperation.

14Printed on 12/21/2009



Revise text as follows:7.2.5 All liquid and vapor connections on containers, other than pressure relief valves, liquid level gauging devices, and

openings not larger than No. 54 drill size as covered in 7.2.6 and 7.4.3, shall be equipped with one of the following:(1) A back-pressure check valve and either a manual valve or an emergency shutoff valve(2) An excess-flow valve with a fail closed hydraulic or pneumatically actuated valve in compliance with either API 607,

6FA, or equivalent, equipped forremote closure and automatic shutoff using thermal (fire) actuation where the thermal element is located within 5 ft (1.5m) of the valve is installed in compliance with 7.1.5

Section 7.1.5 describes the use of fusible links. It should be referenced here and not restated. Thiscould prevent differences in the code should either section be changed in the future and the other one is not.

_______________________________________________________________________________________________59- Log #35


Delete text as follows:7.3.1 Piping systems including interconnecting of permanently installed containers shall compensate for expansion,

contraction, jarring, vibration, and settling.Delete section 7.3.1 since it only restates 7.1.8.

_______________________________________________________________________________________________59- Log #36


Delete text as follows:7.3.3 The use of nonmetallic hose shall be prohibited for interconnecting stationary containers

Renumber 7.3.4 through 7.3.4.3Delete section 7.3.3 since it restates section 7.3.1.2

_______________________________________________________________________________________________59- Log #37


Revise text as follows:7.3.4.2 The mechanism for such valves shall be in accordance with 7.1.4 be provided with a secondary control

equipped with a fusible release in accordance with 7.1.5 [not over 250F (121C) melting point] that will cause the valve toclose automatically in case of fire.

Section 7.1.5 describes the use of fusible links. It should be referenced here and not restated. Thiscould prevent differences in the code should either section be changed in the future and the other one is not.

15Printed on 12/21/2009



Revise text to read as follows:7.3.4.5 Where installed in aboveground piping systems, Fail-safe valves shall be arranged to limit the quantity that

could be discharged volume in aboveground piping systems to a maximum of 500 gal (1.89 m3 ) of liquid within 300 ft(91.4 m) of a container, important building, or line of adjoining property that can be built upon. to a maximum of 500 gal(1.89 m3) of liquid.

Reworded to improve clarity.

_______________________________________________________________________________________________59- Log #64


Revise text to read as follows:7.7. Refrigerated storage systems shall be equipped….

The requirements of 7.7 indicate that the ensuing paragraphs apply to all LP-Gas systems. Therequirements of 7.7.3 and 7.7.3.1 through 7.7.3.4 apply only to pumps and compressors on refrigerated storagesystems. The addition of the title makes this more obvious and eliminates confusion in application and enforcement.

_______________________________________________________________________________________________59- Log #65


Revise text to read as follows:7.8.1 Valves and regulating, gauging, and other container accessory equipment shall be protected against tampering

and physical damage, and where if locks are used, they shall be of the frangible shank type.The use of “where” is confusing. This has been interpreted as requiring locks on tanks.

_______________________________________________________________________________________________59- Log #66


Revise text to read as follows:All connections on underground containers shall be protected against vehicular damage or located so as not to

be subject to such damageThe requirements of NFPA 58 6.6.6.2 (6) are paraphrased to explain what damage the containers are

to be protected against.

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Revise text as follows:8.2.2(2) should be shown as (1) (a) as it relates specifically to 8.2.2(1).8.2.2(4) should be shown as (3)(a) as it relates to 8.2.2(3).Renumber 8.2.2(3) as 8.2.2 (2) to correct number order.

The structure shall be ventilated using air inlets and outlets, the bottom ofwhich shall be not more than 6 in. (150 mm) above the floor, and ventilation shall be provided in accordance with thefollowing:(1) Where mechanical ventilation is used, the rate of air circulation shall be at least ft3/minft2 (0.3 m3/minm2) of floor

area.(2) (a) Outlets shall discharge at least 5 ft (1.5 m from any opening into the structure or any other structure.(3)(2) Where natural ventilation is used, each exterior wall shall be provided with one opening for each 20 ft (6.1 m) of

length.(4)(a) Each opening shall have a minimum size of 50 in.2 (32,250 mm2), and the total of all openings shall be at least 1

in.2/ft2 (6900 mm2/m2 of floor area. [58:10.2.2]The requirements as listed separately in 8.2.2(2) and (4) can mislead those applying the code. These

two statements were each in one paragraph (5.2.2.1) and (5.2.2.2) in the 2001 edition of NFPA 59.

_______________________________________________________________________________________________59- Log #CP8


1. Delete 9.1.39.1.3 Vaporizer houses shall not have drains to sewers or sump pits.2. Revise 9.2 to read:9.2 Buildings or Rooms Housing Vaporizers or Gas–Air Mixers.9.2.1 Buildings or rooms housing vaporizers or gas–air mixers shall be in accordance with Chapter 8.9.2.2 Rooms housing vaporizers or gas–air mixers shall not have drains to sewers or sump pits.

Paragraph 9.1.3 is relocated to a more appropriate location.

_______________________________________________________________________________________________59- Log #39


Revise text as follows:9.1.3 Vaporizer houses shall not have drains to sewers or sump pits.8.4 Vaporizer houses shall not have drains to sewers or sump pits.

This section is better located in Chapter 8 since it is referring to Buildings or Structures HousingLP-Gas Distribution Facilities. Include it as a new section 8.4 so it applies to all structures.

17Printed on 12/21/2009



Revise text to read as follows:9.3.1 Section 9.3 shall not apply to engine fuel vaporizers or to integral vaporizer-burners such as those used with

weed burners or tar kettles.Weed burners and tar kettles are not utility plant equipment.

_______________________________________________________________________________________________59- Log #88


Delete text as follows:Section 9.3 shall not apply to engine fuel vaporizers or to integral vaporizer-burners such as those used with weed

burners or tar kettles.Engine fuel vaporizers and vaporizing burners are outside the scope of NFPA 59 so this paragraph

should be deleted.

_______________________________________________________________________________________________59- Log #40


Revise text as follows:9.3.2 All vaporizers, including atmospheric-type vaporizers that use heat from surrounding air or the ground, shall be

equipped, at or near the discharge, with a spring-loaded pressure relief valve that provides a relieving capacity inaccordance with Section 10.67.2. Fusible plug devices shall not be used.

Improper reference. 10.6.2 concerns pressure relief discharge vents on nonrefrigerated abovegroundcontainers. Section 10.7.2 refers to vaporizer pressure relief valve capacity, the subject of Section 9.3.2.

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Revise text as follows:9.3.3 Indirect vaporizers with a inside diameter of more than 6 in. (150 mm) shall be constructed in accordance with the

applicable provisions of ASME Boiler and Pressure Vessel Code for design pressure of not less than 250 psi (1.7 MPa)and shall be permanently marked with the following:(1) The marking required by the ASME Code(2) The maximum allowable working pressure and temperatures for which designed

●(3) The name of the manufacturer

9.3.5 Design and construction of direct fired vaporizers shall be in accordance with the applicable requirements of theASME Code for the working conditions to which the vaporizer will be subjected , and the vaporizer shall be permanentlyand legibly marked with the following:(1) The markings required by the ASME Code

●(2) The maximum vaporizing capacity in gallons per hour(3) The rated heat input in British thermal units per hour (Btu/hr)(4) The name or symbol of the manufacturer [58:5.21.3.1]9.3.7.1 The vaporizing chamber, tubing, pipe coils, or other heat exchange surface containing the LP Gas to be

vaporized, hereinafter referred to as the heat exchanger, shall be constructed in accordance with applicable provisionsof the ASME Code for a MAWP of 250 psig (1.7 MPag) and shall be permanently and legibly marked with the following:(1) The marking required by the ASME Code(2) The MAWP and temperature for which the heat exchanger is designed(3) The name or symbol of the manufacturer [ 5.21.6.1]9.3.3 The vaporizing chamber, tubing, pipe coils, or other heat exchange surface containing the LP-Gas to be

vaporized, hereinafter referred to as the heat exchanger, shall be constructed in accordance with the applicableprovisions of the ASME Code for not less than a MAWP of 250 psig (1.7 MPag) and shall be permanently and legiblymarked with the following:(1) The marking required by the ASME Code(2) The MAWP and temperature for which the heat exchanger is designed(3) The name or symbol of the manufacturer(4) The maximum vaporizing capacity in gallons per hour(5) The rated heat input in British thermal units per hour (BTU/hr)Heat exchangers for vaporizers that have an inside diameter of 6 in. (150 mm) or less are exempt from the ASME

Code and shall not be required to be marked.The new text consolidates similar text from several vaporizer types.

_______________________________________________________________________________________________59- Log #89


Revise text as follows:Indirect vaporizers shall be provided with a suitable automatic means to prevent liquid from passing through the

vaporizer to the vapor discharge piping. This means shall be permitted to be integral with the vaporizer or otherwiseprovided in the external piping. (See 9.5.1.5 and 9.5.1.6.)

Paragraph 9.3.4 discusses liquid propane passing through the vaporizer to the outlet. The suggestedadditional paragraphs deal with the potential of LP vapor entering the heat exchanger piping. Both relate to a vaporizer,but adding the referenced paragraphs confuses the two subjects.

19Printed on 12/21/2009



Revise text as follows:9.3.4 Indirect All vaporizers shall be provided with a suitable automatic means to prevent liquid from passing through

the vaporizer to the vapor discharge piping. This means shall be permitted to be integral with the vaporizer or otherwiseprovided in the external piping.9.3.6 Direct fired vaporizers shall be provided with automatic means to prevent liquid from passing through the

vaporizer to the vapor discharge piping.9.3.7.3 Heat exchangers for waterbath vaporizers shall be provided with automatic control to prevent the passage of

liquid through the heat exchanger to the vapor discharge piping. This control shall be integral with the vaporizer.[ 5.21.6.3]

The goal with the modification is to state this one time for all vaporizers instead of several times foreach type of vaporizer. The Section listings at the end of this section have nothing to do with liquid carry-over.

_______________________________________________________________________________________________59- Log #CP9


Revise 9.3.7.1 to read:9.3.7.1 The vaporizing chamber, tubing, pipe coils, or other heat exchange surface containing the LP-Gas to be

vaporized, hereinafter referred to as the heat exchanger, shall be constructed in accordance with the applicableprovisions of the ASME Boiler and Pressure Vessel Code for a MAWP of not less than 250 psig (1.7 MPag) and shall bepermanently and legibly marked with the following:

The MAWP is revised to allow higher pressure vaporizers, and an editorial change is made.

_______________________________________________________________________________________________59- Log #CP10


Revise text to read as follows:9.3.7.3 Heat exchangers for waterbath vaporizers shall be provided with automatic control to prevent the passage of

liquid through the heat exchanger to the vapor discharge piping. This control shall be integral with the vaporizer.[58:5.21.6.3]

The requirement that the controls be integral to the vaporizer is deleted as it is design restrictive, andmay not be appropriate for utility gas plants.

20Printed on 12/21/2009



Revise text as follows:9.3.7.4 The wWaterbath sections of waterbath vaporizers shall be designed for the pressures to which they could be

subjected and shall be protected from over-pressure. to prevent a pressure from exceeding the design pressure.[ 5.21.6.5]

Cleans up poorly written text

_______________________________________________________________________________________________59- Log #81

_______________________________________________________________________________________________Randy Ervin, Algas-SDI

Revise text as follows:9.3.7.4 Waterbath sections of waterbath vaporizers shall be designed to prevent a pressure from exceeding the design

pressure for the pressure in which they are intended to operate at and shall be protected from over pressure.[58:5.21.6.5]

The current test is not clear as to what "a pressure" is. The proposed text clarifies the intended scope.Waterbath sections can be either open systems requiring no further protection than adequate opening to theatmosphere or may be pressurized and protected with a relief valve, fusible plug, blowout, etc.

_______________________________________________________________________________________________59- Log #44


Revise text as follows:9.3.7.8 Gas-fired immersion heaters with an input of 400,000 Btu/hr (422 MJ/hr) or more shall be equipped with an

electronic flame safeguard that provides the following functions, and with programming to provide for1. prepurge of the combustion chamber prior to ignition,2. proof of pilot before the main burner valve opens,3. and full shutdown of the main gas valve and pilot upon flame failure. [58:5.21.6.9]

Cleans up poorly written text

_______________________________________________________________________________________________59- Log #45


Revise text as follows:The heat source shall be shut off if the level of the heat transfer medium falls below the top of the fire tube or

electric heating coil or element unless the vaporizer is designed for this occurrence.Electric heating elements can be designed for run dry situations.

21Printed on 12/21/2009



9.4.3.1 Check valves shall not be used relied upon as the sole method to prevent backflow.We suggest here that check valves may be used, just not relied upon as the sole method to prevent

backflow.

_______________________________________________________________________________________________59- Log #47


Revise text as follows:9.4.5 LP-Gas-air mixers that use the kinetic energy of the LP-Gas vapor to entrain air directly from the atmosphere

without the use of a blower, compressor, or other mechanical source of air shall require only a shutoff that will minimizethe leakage of either gas or LP-Gas vapors to the atmosphere when the mixer is not operating.9.4.5.1 Mixers using kinetic energy shall be provided with pressure regulation and associated interlocks to prevent

significant departure from the design ratio of LP-Gas air mixture.9.4.5.2 Mixers receiving air from a blower, compressor, or any source of air other than directly from the atmosphere

shall comply with 9.4.3.Changes to 9.4.5 consolidate requirements of 9.4.5.2.

Requirements of 9.4.5.1 are addressed in 9.4.2.

_______________________________________________________________________________________________59- Log #48


Revise text as follows:9.5.1.4 The installation of a heat source serving an indirect vaporizer that utilizes noncombustible heat transfer fluid

shall be installed outdoors or shall meet one of the following:(1) If installed within a structure, the structure shall comply with Section 8.2 Chapter 8.(2) If installed in structures attached to or in rooms within another gas manufacturing or distribution building (but not

buildings used for other purposes), the structure shall comply with Section 8.2.(23) If installed outdoors, the heat-supplying device or the housing in which it is installed shall be located at least 50 ft

(15 m) from other LP-Gas facilities and operations.(34) If the heat source of an indirect vaporizer is gas fired and is located within 15 ft (4.6 m) of the vaporizer, the

vaporizer and its heat source shall be installed as a direct-fired vaporizer and shall be subject to the requirements of9.5.2.(45) If the heat source serving an indirect vaporizer utilizes a noncombustible heat transfer fluid, such as steam, water,

or a water-glycol mixture, it shall be installed outdoors or shall comply with one the following:(a) A source of heat for an indirect vaporizer shall be permitted to be installed in an industrial occupancy complying

with Chapter 40 of NFPA 101, Life Safety Code, and Section 9.3 of NFPA 54, National Fuel Gas Code, where the heattransfer fluid is steam or hot water and is not recirculated and a backflow preventer is installed between the vaporizerand the heat source.(b) If the heat transfer fluid is recirculated after leaving the vaporizer, a phase separator shall be installed with the gas

vented to a safe location.Simplifies text to say that if a vaporizer is installed in a structure, the structure must meet whatever

pertinent part of Chapter 8.

22Printed on 12/21/2009



Revise text as follows:9.5.1.4 The installation of a heat source serving an indirect vaporizer that utilizes noncombustible heat transfer fluid

shall be installed outdoors or shall meet one of the following:If the heat source serving an indirect vaporizer utilizes a noncombustible heat transfer fluid, such as steam, water, or a

water–glycol mixture, it shall be installed outdoors or shall comply with one of the following:9.5.1.4(5) If the heat source serving an indirect vaporizer utilizes a noncombustible heat transfer fluid, such as steam,

water, or a water–glycol mixture, it shall be installed outdoors or shall comply with one of the following:9.5.1.4(5) (a) 9.5.1.4(5) A source of heat for an indirect vaporizer ...9.5.1.4(5) (b) 9.5.1.4(6) If the heat transfer fluid is recirculated ...

Re-order this paragraph to place the list of requirements at the proper level.

_______________________________________________________________________________________________59- Log #CP5


Delete 9.5.1.9.

The paragraph is not required as it addresses a control for a tank heater not a vaporizer.

_______________________________________________________________________________________________59- Log #2

_______________________________________________________________________________________________Hal Cohen, HCC and Associates

Revise text as follows:In Table 9.5.2.4, change all distances in table to 10 feet.

The separation distances in NFPA 58, Table 6.1.9.3.6 and NFPA 5, Table 9.5.2.4 differ. Yet, one canhave the same hazard and each standard requires a different separation distance. I was recently involved in two similarprojects with each project involving a single 30,000-gallon LP-Gas container. the use of each project was different andon LP-Gas container needed to comply with NFPA 58 and one LP-Gas container needed to comply with NFPA 59.Although the hazards were exactly the same, the location of the vaporizer needed to be different.My assumption is that the NFPA 59 criterion is more stringent than NFPA 58 because of

_______________________________________________________________________________________________59- Log #49


Revise text as follows:Where a gas-air mixer is installed in a building remotely from a vaporizer, the building shall comply with 8.3.2

Chapter 8.Simplifies text to say that if a gas-air mixer is installed in a structure, the structure must meet the

requirements of Chapter 8.

23Printed on 12/21/2009



Revise text as follows:Where used with a direct-fired vaporizer, the mixer shall be installed as follows:

(1) Where the mixer is listed or approved, outdoors, in a common cabinet with the vaporizer outdoors, in accordancewith 9.5.2.4(2) Outdoors on a common skid with the vaporizer, in accordance with 9.5.2.4(3) Adjacent to the vaporizer to which it is connected, in accordance with 9.5.2.4(4) In a building complying with Chapter 8 Section 8.2, with no direct-fired vaporizer in the same room

Simplifies text to directly reference Chapter 8.

_______________________________________________________________________________________________59- Log #91


9.5.5.4 Where used with a direct-fired vaporizer, the mixer shall be installed as follows to complywith one of the following:(1) Where the mixer is listed or approved, it may be installed outdoors, in a common cabinet with the vaporizer

outdoors, in accordance with 9.5.2.4The original wording seemed to indicate all of the following requirements must be met rather than a

choice. The first listed item was poorly worded.

_______________________________________________________________________________________________59- Log #51


Delete text as follows:Listed vaporizer mixers in a common cabinet having a direct fired type vaporizer shall be installed outdoors in

accordance with the distance provisions in 9.5.2.Delete since text is essentially the same as 9.5.5.4(1).

_______________________________________________________________________________________________59- Log #92


Revise text as follows:10.1* General10.1.1* (remove asterisk) Relief devices on containers shall be arranged so that the possibility of tampering is

minimized.The annex material discusses relief devices in general and should be associated with 10.1 rather than

10.1.1 which covers tampering.

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Revise text as follows:10.2 Nonrefrigerated Container Relief Devices for Nonrefrigerated Containers

Rewording the heading is needed to standardize with heading in 10.4 and other proposed headings inthe chapter

_______________________________________________________________________________________________59- Log #100

_______________________________________________________________________________________________Bob Eugene, Underwriters Laboratories Inc.

Revise text to read as follows:10.2.2 ASME containers for LP-Gas shall be equipped with the direct spring-loaded pressure relief valves conforming

with applicable requirements of ANSI/UL 132, Standard on Safety Relief Valves for Anhydrous Ammonia and LP-Gas, orother equivalent pressure relief valve standards. [58:5.7.2.4]

Add ANSI approval designation to UL 132.

_______________________________________________________________________________________________59- Log #70


New text to read as follows:

Chapter 10 discusses relief valve sizing for both refrigerated and non-refrigerated containers. Thetable is intended to be used only for non-refrigerated containers.

_______________________________________________________________________________________________59- Log #12


10.3 Refrigerated Container Relief Devices for Refrigerated ContainersRewording the heading is needed to standardize with heading in 10.4 and other proposed headings in

the chapter

25Printed on 12/21/2009



Revise text as follows:Delete the existing paragraphs 10.3.4 to 10.3.7 and rearrange the paragraphs as:10.3.4. Pressure losses in inlet and outlet piping connections to relief devices shall be included in the selection and

sizing of relief devices.10.3.5 A manually operated full opening stop valve shall be installed between each pressure and vacuum relief valve

and the LP-Gas container.10.3.5.1 A sufficient number of pressure and vacuum relief valves shall be installed on the refrigerated LP-Gas

container to allow each relief valve to be isolated individually while maintaining the full relieving capacities required.10.3.5.2 All stop valves installed between a relief valve and a container shall be lockable or sealable in the fully open

position.10.3.5.3 Stop valves under individual safety relief valves shall be locked or sealed when opened and shall not be

opened or closed except by an authorized person.10.3.5.4 Where only one relief device is required, a second, redundant relief device shall be installed with either a full

port opening three-way valve between the container and the two redundant relief devices or separate stop valvesinstalled beneath each redundant relief device.10.3.5.5 No more than one stop valve shall be closed at one time.

These paragraphs were poorly organized. The same information has been placed in a more logicalorder

_______________________________________________________________________________________________59- Log #16


Revise text as follows:10.4 Relief Device Sizing for Refrigerated Container Relief Device Sizing

Rewording the heading is needed to standardize with other headings in the chapter

_______________________________________________________________________________________________59- Log #CP3


Revise 10.4.3 (3) to read:(3) Reduction in vapor space pressure as a result of top filling with liquid.

The paragraph is revised to complete the sentence.

26Printed on 12/21/2009



Revise 10.4.3(3) to read as follows:The vacuum relief devices shall be sized to relieve the flow capacity determined for the largest single condition

or any reasonable and probable combination of conditions, including the following:(1) Withdrawal of liquid or vapor at the maximum rate(2) Rise in barometric pressure(3) Reduction in vapor space pressure such as a result of filling with a subcooled liquid

New text adds clarity and captures text listed in the 2004 edition of NFPA 59 6.8.3.1

_______________________________________________________________________________________________59- Log #14


Revise 10.5 Header as follows:10.5 Fire Exposure on Refrigerated Containers Refrigerated Container Relief Device Sizing for Fire Exposure.

Clarifies purpose of 10.5

_______________________________________________________________________________________________59- Log #13


Revise 10.5.2 to align with intent of NFPA 58 2008 edition 12.8.4.2 as follows and provide analternative to 10.5.2.1 (1)-(3). Also, to add insight as to the intent of the performance criteria add to the Annex of NFPA59 (text from Annex H of NFPA 58 2008 edition):10.5.2 Insulated Containers.*10.5.2.1 Where credit for insulation is taken in sizing of a relief valve for fire exposure, the Iinsulation shall meet the

criteria listed below in 10.5.2.1 (1)-(3) or the criteria in 10.5.2.1(4) below as follows:(1) It shall resist dislodgement by fire-fighting equipment, as determined by the user.(2) It shall be noncombustible.(3) It shall not decompose at temperatures up to 1000°F (538°C)(4) The credit for insulation shall be permitted if the material meets the acceptance criteria listed in NFPA 290

“Standard for Fire Testing of Passive Protection Materials for Use on LP-Gas Containers”.Clarifies drivers for insulation requirements and aligns with NFPA 58, provides alternate performance

criteria, and background information on intent of performance criteria and testing overview.

27Printed on 12/21/2009



Revise text as follows:10.6.1.2(3) Discharge shall be located above the heads of personnel on the container or adjacent containers, stairs, orplatforms, or on the ground if vents are located above the possible water level, if discharging from undergroundcontainers where there is a possibility of flooding.

This paragraph is redundant to requirements stated in 10.6.2.1.3 and 10.6.3.1. In it present location, italso applies to vaporizer relief valves and hydrostatic relief valves which is not what the committee intended. Themention of location above possible water level makes locating relief vents unnecessarily confusing.

_______________________________________________________________________________________________59- Log #94


Revise text as follows:10.6.2.1.3 The vent piping shall extend upward at least 7 ft (2.2 m) above the top of the container.Exception: Containers with less than 2000 gal (7.6 m3) water capacity are not required to have vent piping.10.6.3.1 The discharge pipe from pressure relief devices shall extend directly and vertically upward at least 7 ft (2.2 m)

above the ground.Exception: Containers with less than 2000 gal (7.6 m3) water capacity are not required to have vent piping.

Unlike NFPA 58, NFPA 59 did not give an exemption for relief stacks for small containers.

_______________________________________________________________________________________________59- Log #95


Revise text as follows:10.6.3.2 10.2.5 If liquid product is placed in containers while they are not buried, the pressure relief valve sizing shall

be that of aboveground containers.This paragraph deals with relief valve sizing, not discharge vents where it is currently located. Move it

to 10.2.5 and renumber the following paragraphs.

_______________________________________________________________________________________________59- Log #15


Change reference in 10.7.3 from 10.7.1 to 10.7.210.7.3 Where portions of the vaporizer containing LP-Gas can be exposed to external fire, the vaporization rate from

the exposed surface area under fire exposure conditions shall be added to the discharge rate determined in 10.7.110.7.2.

Corrects inaccurate reference.

28Printed on 12/21/2009



Revise text to read as follows:10.7.4 Vaporizer pressure relief valve outlets located within buildings shall be piped to a point outside the building and

shall discharge vertically upward.10.7.5 Pressure relief valves on vaporizers within buildings or structures in utility LP-Gas plants shall be piped to apoint outside the building or structure and shall discharge vertically upward.

Paragraph 10.7.4 is deleted as it duplicates the requirement of 10.7.5. Paragraph 10.7.5 is revised asthe standard covers utility LP-Gas plants.

_______________________________________________________________________________________________59- Log #18


Delete 10.7.4 and edit 10.7.5 as follows:10.7.4 Vaporizer pressure relief valve outlets located within buildings shall be piped to a point outside the building and

shall discharge vertically upward.10.7.5 Pressure relief on vaporizers within buildings in utility LP Gas plants shall be piped to a point outside the

building or structure and shall discharge vertically upward.Deletion of 10.7.4 eliminates redundancy with 10.7.5 and then deletes rhetorical text in 10.7.5

_______________________________________________________________________________________________59- Log #19


Revise text as follows:Operating procedures for vaporizers shall include the following:

(1) Maintenance of vaporization rate flow controls(2) Pressure control(3) Temperature control(4) Specific actions to be taken when parameters exceed normal operating limits and criteria for emergency shutdown

Change vaporization rate to flow controls for clarity.

_______________________________________________________________________________________________59- Log #62


Revise text to read as follows:Move 11.2.1 through 11.2.4.3 to

and rename as follows: 7.9 . Renumber the relocated paragraphs as appropriate.Retain paragraphs 11.2.1.2 (3), 11.2.1.3, 11.2.1.4, and 11.2.1.7 in Chapter 11 under the existing heading

and new sub-heading and renumber as follows: 11.2.1.2 (3) to11.2.1.1, 11.2.1.3 to 11.2.1.2, 11.2.1.4 to 11.2.1.3 and 11.2.1.7 to 11.2.1.4

This proposal moves requirements for equipment into the equipment section in preparation for aproposal to change 1.3.1 making chapters 11, 12 and 13 retroactive. This is consistent with the requirements in DOT192.

29Printed on 12/21/2009



Revise text as follows:11.2.1.3 Transfer operations shall be conducted by individuals familiar with the properties of the material and

instructed in transfer and emergency procedures. At least one competent person shall remain in attendance during theentire period of transfer from the time connections are made until the transfer is completed, shutoff valves are closed,and lines are disconnected.11.2.1.3.4 At least one competent person shall remain in attendance during the entire period of transfer from the time

connections are made until the transfer is completed, shutoff valves are closed, and lines are disconnected.This paragraph lists two requirements. Delete the second sentence and move it to a new paragraph.

Renumber the following paragraphs.

_______________________________________________________________________________________________59- Log #97


Revise text as follows:11.2.1.4 Written procedures shall be available to cover all transfer operations, and they shall cover emergency as well

as normal operating procedures. Written procedures shall be reviewed and updated at least annually and shall beavailable to all personnel engaged in transfer operations.11.2.1.5 Written procedures shall be reviewed and updated at least annually and shall be available to all personnel

engaged in transfer operations.This paragraph lists two requirements. Delete the second sentence and move it to a new paragraph.

Renumber the following paragraphs.

_______________________________________________________________________________________________59- Log #84


Revise text as follows:Caution shall be exercised to ensure that oOnly those gases or liquids for which the system is designed, examined,

and listed are shall be employed in its operation, particularly with regard to pressures.“Exercising caution” is a meaningless phrase. Liquids like methanol are commonly used. These

systems are not listed. No information is given as to how they are to be examined. “Particularly with regard topressures” tends to limit the issues incompatible materials may cause.

30Printed on 12/21/2009



Revise text as follows:Where a hose or swivel-type piping 11/2 in. (38 mm) or larger is used for liquid transfer or a 11/4 in. (32 mm) or larger

vapor hose or swivel-type piping is used in this service, an emergency shutoff .... (Delete the entire paragraph)11.2.2.1 Where When a hose or swivel-type piping 1½ in. (38 mm) or larger is used for liquid transfer or a 1¼ in. (32

mm) or larger vapor hose or swivel-type piping is used for vapor transfer, the following requirements must be met:11.2.2.1.(a) In this service, an emergency shutoff valve complying with 7.1.4 or a check valve with a metal-to-metal

seat or a primary resilient seat with a secondary metal seat not hinged with combustible metal shall be installed in thefixed piping of the transfer system within 20 ft (6.1 m) of lineal pipe from the nearest end of the hose or swivel-typepiping to which the hose or swivel-type piping is connected.11.2.2.1.(b) Where When either a liquid or vapor line has two or more hose or swivel-type piping connectors of the

sizes designated, an emergency shutoff valve or a backflow check valve shall be installed in each leg of the piping.This paragraph was poorly worded and confusing. Delete the original text and revise into multiple

paragraphs.

31Printed on 12/21/2009



Add new text before existing 12.2 and renumber remainder of chapter12.2 Corrosion protection.(a) Each operator shall determine which metallic components could, unless corrosion is controlled, have their integrity

or reliability adversely affected by external, internal, or atmospheric corrosion during their intended service life.(b) Components whose integrity or reliability could be adversely affected by corrosion must be either:(1) Protected from corrosion in accordance with 12.2.1 through 12.2.5 as applicable; or(2) Inspected and replaced under a program of scheduled maintenance12.2.1 Atmospheric corrosion controlEach exposed component that is subject to atmospheric corrosive attack must be protected from atmospheric

corrosion by:(a) Material that has been designed and selected to resist the corrosive atmosphere involved; or(b) Suitable coating or jacketing12.2.2 External corrosion control; buried or submerged components.(a) Each buried or submerged component that is subject to external corrosive attack must be protected from external

corrosion by:(1) Material that has been designed and selected to resist the corrosive environment involved; or(2) The following means:(i) An external protective coating designed and installed to prevent corrosion attack and to meet the requirements of 49

CFR 192.461; and(ii) A cathodic protection system designed to protect components in their entirety in accordance with the requirements

of 49 CFR 192.4763 and placed in operation before October 23, 1981, or within 1 year after the component isconstructed or installed, whichever is later(b) Where cathodic protection is applied, components that are electrically interconnected must be protected as a unit.12.2.3 Internal corrosion control.Each component that is subject to internal corrosive attack must be protected from internal corrosion by:(a) Material that has been designed and selected to resist the corrosive fluid involved; or(b) Suitable coating, inhibitor, or other means.12.2.4 Interference currents.(a) Each component that is subject to electrical current interference must be protected by a continuing program to

minimize the detrimental effects of currents.(b) Each cathodic protection system must be designed and installed so as to minimize any adverse effects it might

cause to adjacent metal components.(c) Each impressed current power source must be installed and maintained to prevent adverse interference with

communications and control systems.12.2.5 Monitoring corrosion controlCorrosion protection provided as required by this subpart must be periodically monitored to give early recognition of

ineffective corrosion protection, including the following, as applicable:(a) Each buried or submerged component under cathodic protection must be tested at least once each calendar year,

but with intervals not exceeding 15 months, to determine whether the cathodic protection meets the requirements of 49CFR 192.463.(b) Each cathodic protection rectifier or other impressed current power source must be inspected at least 6 times each

calendar year, but with intervals not exceeding 2/1/2/ months, to ensure that it is operating properly.(c) Each reverse current switch, each diode, and each interference bond whose failure would jeopardize component

protection must be electrically checked for proper performance at least 6 times each calendar year, but with intervals notexceeding 2/1/2/ months. Each other interference bond must be checked at least once each calendar year, but withintervals not exceeding 15 months.(d) Each component that is protected from atmospheric corrosion must be inspected at intervals not exceeding 3 years.(e) If a component is protected from internal corrosion, monitoring devices designed to detect internal corrosion, such

as coupons or probes, must be located where corrosion is most likely to occur. However, monitoring is not required forcorrosion resistant materials if the operator can demonstrate that the component will not be adversely affected byinternal corrosion during its service life. Internal corrosion control monitoring devices must be checked at least two times

32Printed on 12/21/2009

Report on Proposals – June 2011 NFPA 59each calendar year, but with intervals not exceeding 7/1/2/ months.12.2.6 Remedial measures.Prompt corrective or remedial action must be taken whenever an operator learns by inspection or otherwise that

atmospheric, external, or internal corrosion is not controlled in accordance with 12.2 in its entirety.Proposed requirements extracted from 49 CFR 193.2625-2637 increase awareness of corrosion

control requirements and align similar corrosion control requirements between similar types of gas process facilities(Propane - Air and LNG peakshaving facilities.)

_______________________________________________________________________________________________59- Log #CP4


Revise text to read as follows:12.5.2 Records that are required under 12.5.1 shall be retained for: the life of the equipment(1) For 5 years, while in

use, and service(2) For at least 3 years thereafter after the equipment is removed from service.

Maintenance records are of no use after 5 years of successful operation.

_______________________________________________________________________________________________59- Log #20


Revise text as follows:12.5.2 Records that are required under 12.5.1 shall be retained for the life of the equipment, while in use, and for 3

years thereafter. Retention of records that are required under 12.5.1 shall be as follows:a) Records of the inspection, testing and maintenance of propane pressure relief valves shall be retained for the life of

the equipment being protected, while in use, and for 3 years thereafter.b) Records of the inspection, testing and maintenance for all other process equipment shall be kept for five years.

This will allow the record retention for all maintenance work except for that on relief valves to bedisposed of after five years and match the records retention period required for operations records under 11.3.2.

_______________________________________________________________________________________________59- Log #21


Add new text as follows:13.2.5 When installed as determined by the evaluation required in 13.1.1, the following fire alarm components shall be

designed, installed, documented, tested and maintained in accordance with NFPA 72, National Fire Alarm Code, asfollows or as approved by the AHJ:(1) Initiating devices (detectors – smoke, flame, heat, etc),(2) Fire system monitor panels,(3) Notification appliances (strobes, sirens, etc),(4) Fire system activation devices on installed extinguishment/suppression systems (water deluge, fixed fry chemical

systems), and(5) Field wiring between initiating, notification components, activation/suppression system, and control panels.(6) Power supply and backup power equipment for fire alarm system.

The proposed requirements increases safety of facilities fire system based on a set of standardrequirements (NFPA 72) and gives an alternate approach via an AHJ’s approval.

33Printed on 12/21/2009



Revise text as follows:Portable or wheeled fire extinguishers that are recommended for gas fires of the dry chemical type shall be available at

strategic locations, as determined in accordance with 13.1.1, within the facility.The word strategic provides no useful information

_______________________________________________________________________________________________59- Log #86


Revise text as follows:Fixed fire-extinguishing and other fire control systems can be appropriate for the protection of specific hazards as

determined in accordance with 13.1.1. If fixed fire-extinguishing and other fire control systems are provided, suchsystems shall be designed, installed, and maintained in accordance with the following NFPA standards, as applicable:

The first part of the paragraph is not a requirement.

_______________________________________________________________________________________________59- Log #23


Add new 13.7.11 and associated annex information as follows:13.7.11 Personnel shall be advised of the dangers of electrical exposure and contact with energized electrical

components within the facility.*13.7.11 NFPA 70E Electrical Safety in the Workplace can be used to identify personnel protection levels where

electrical exposure, contact concerns are present within the facility. Protective clothing and equipment should be madeavailable as listed by NFPA 70E based on the tasks performed.

The additional awareness of electrical safety in the workplace as covered in NFPA 70E increases thesafety of operating and maintenance personnel at the facilities.

_______________________________________________________________________________________________59- Log #87


Revise text as follows:Each utility gas plant shall have first-aid materials readily available to handle a reasonably anticipated emergency.

First aid materials should be available. The type and amount should be determined by the plantoperator. No guidance is given by the last part of the paragraph.

34Printed on 12/21/2009



13.7.4 should be shown as 13.7.3.1 as it relates specifically to 13.7.3.13.7.3 Personnel shall be advised of the danger of frostbite, which can result from contact with LP-Gas liquid or cold

refrigerants.13.7.34.1 Protective clothing and equipment shall be available.

13.7.4 is associated with 13.7.3 and should be shown as such. When requirements are listedseparately as they are in 13.7.4 in the 2008 edition, it changes the intent of the requirement as it broadens therequirements beyond the task identified in 13.7.5. These 2 statements were listed together in the 2001 edition of NFPA59 11.8.1.

_______________________________________________________________________________________________59- Log #25


13.7.6 should be shown as supporting 13.7.5. Delete 13.7.7.13.7.5 Those employees who will be involved in emergency activities, as determined in accordance with 13.1.1, shall

be equipped with necessary clothing and equipment.13.7.65.1 Protective clothing including helmets, face shields, gloves and boots shall comply with NFPA 1971, Standard

on Protective Ensembles for Structural Fire Fighting and Proximity Fire Fighting, and protective clothing shall have animpermeable outer shell.13.7.7 These employees requiring such protective clothing also shall be equipped with helmets, face shields, gloves,

and boots that are recommended for LP Gas.Both 13.7.6 and 13.7.7 are associated with 13.7.5 and should be shown as such. When requirements

are listed separately as the 13.7.6 and 13.7.7 are in the 2008 edition, it changes the intent of the requirement as itbroadens the requirements beyond the task identified in 13.7.5. These 3 statements were listed together in the 1998edition of NFPA 59 10.8.2. New text in 13.7.5.1 includes elements of deleted 13.7.7 as the helmets, face shield, glovesand boots were intended to comply with NFPA 1971 for fire fighting and not LP-gas.

_______________________________________________________________________________________________59- Log #CP1


Revise 13.7.7 to read:13.7.7 Personnel Safety.13.7.7.1* Protective clothing that will provide protection against the effects of exposure to LP-Gas shall be available

and readily accessible at the facility.13.7.7.2 Employees who are involved in fire fighting activities shall be equipped with protective clothing and equipment

and trained in accordance with NFPA 600, Standard on Industrial Fire Brigades.13.7.7.3* Written practices and procedures shall be developed to protect employees from the hazards of entry into

confined or hazardous spaces.13.7.7.4* At least one portable flammable gas detector shall be readily available.A.12.8.1 Protective clothing for normal liquid transfer operations should include gloves, safety glasses, face shields,

and coveralls or long-sleeve shirts.A.12.8.3 Information concerning confined entry practices and procedures can be found in 29 CFR 1910.146, “Labor”.

The section on Personnel Safety is revised to recognize that there is no personal protective equipmentthat is recommended for LP-Gas service. Reference to NFPA 600 is added for fire brigades, were used

35Printed on 12/21/2009



Revise text as follows:13.7.8 Self-contained breathing apparatus shall be provided for those employees who are required to enter an

atmosphere that could be injurious to health during an emergency.13.7.97.8.1 Such apparatus shall comply with NFPA 1981,

and shall be maintained in accordance with the manufacturer’s instructionsBoth 13.7.8 and 13.7.9 are associated and should be shown as such. These statements were listed

together in the 1998 edition of NFPA 59 10.8.3

_______________________________________________________________________________________________59- Log #1

_______________________________________________________________________________________________

John Ritzmann, Consultant1. Insert an asterisk after paragraph number 5.4.1.2.

2. Add a new A.5.4.1.2 to read:The reference to an "important building or group of buildings" in Table 9.5.2.4 refers to buildings that are not

a part of the Utility LP-Gas Plant process and meet one of the following criteria:1. The building is intended for human occupancy.2. The building or its contents are of high value.3. The building is important to emergency responders in a fire situation.A building that meets any of the above criteria is considered important.3. Insert an asterisk after paragraph number 7.3.4.4. Add a new A.7.3.4 to read:See A.5.4.1.25. Insert an asterisk after paragraph number 9.5.2.4.6. Add a new A 9.5.2.4 to read:See A.5.4.1.2

Submitters Reason: The term "important building" has been used in NFPA 58 and NFPA 59 for manyyears with no guidance to the user on what was intended. Recently, questions have arisen that make it appropriate toprovide information to the user on the committee's intent, and the TIA will resolve the problems that have arisen.Emergency Nature: The TIA will provide information needed by users of NFPA 59, and meets the requirement of the

NFPA Regulations Governing Committee Projects, Section 5.2(d).

_______________________________________________________________________________________________59- Log #CP6


Delete A.6.3.4.2The document referenced is out of print.

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Add additional interchangeability reference/tool as follows:A.9.4 For more information on personnel safety, see AGA Introduction to LPG Safety for Propane Air Plant Operators.

For information on interchangeability of LP-Gas-air mixtures with natural gas, see the AGA publicationsInterchangeability - What it Means and. Interchangeability of Other Fuel Gases with Natural Gas and the AGA GasInterchangeability Program.

The proposed additional resource adds to the operator's toolbox to aide in determining thatinterchangeability is maintained within safe limits.

_______________________________________________________________________________________________59- Log #52


Remove annex reference indicator at 13.1.1.2(8), add reference mark to 5.4.1.2 and use sameannex text as previous A.13.1.1.2(8) annex information and reference to relate to 5.4.1.2.A.13.1.1.2(8) A.5.4.1.2 In heavily populated or congested areas where serious mutual exposures between container(s)

and adjacent properties prevail, it is recommended that greater distances or special protection in accordance with goodfire protection engineering practices be provided. Special protection can consist of mounding or burying containers orproviding fixed water spray or monitor nozzle protection.

The proposed change increases awareness that additional siting distance should be considered duringinstallation of the container. Currently by referencing 13.1.1.2(8) it relates to protective equipment and training for plantpersonnel performing emergency duties.

_______________________________________________________________________________________________59- Log #9


Revise text to read as follows:Update the following referenced documents with the latest edition of the referenced standard as follows:

Interchangeability – What it means, AGA Catalog No. XL0884, 1984 2002

API 620, Design and Construction of Large, Welded, Low-Pressure Storage Tanks, 2002 2008 edition.API RP 2003 Protection against Ignition Arising out of Static, Lightning and stray Current 1998 2008 edition

American Society of Civil Engineers,ASCE 56,Sub-Surface Investigation for Design and Construction of Foundation of Buildings, 1976 1986


37Printed on 12/21/2009

Documents

Agenda - nfpa.org · Update the following referenced documents with the latest edition of the referenced standard as follows: ... edition. API 620, ... temperature at 2550°F