NFPA 505 ROP Meeting...Lewis C. Barbe Principal World Safety Organization 6320 Limerick Lane Edina,...

Technical Committee on Industrial Trucks

NFPA 505 ROP Meeting NFPA Headquarters

1 Batterymarch Park

Quincy, MA 02169

Tuesday, July 12, 2011 (9:00AM-5:00PM ET)

1. Call to Order at 9:00AM ET 2. Greetings and Self-Introductions 3. Comments and General Procedure

a. Exits b. Committee Membership Update c. Review of Revision Cycle and Procedures

4. Approval of Minutes of Last Meeting 5. Item for Discussion: Fuel Cell Vehicles 6. Item for Discussion: Compressed Gaseous Hydrogen (CGH) Trucks 7. Item for Discussion: Third Party Listings 8. Item for Discussion: Static Electricity 9. Item for Discussion: Replacement Plastic (Non-Marring) Tires 10. Item for Discussion: Hydraulic Hose Concerns. 11. Additional Topics for Discussion 12. Review and Action on Public Proposals for NFPA 505 13. Recess at 5:00PM ET

Wednesday, July 13, 2011 (9:00AM-12:00PM ET)

1. Reconvene at 9:00AM ET 2. Review and Action on Public Proposals for NFPA 505 3. Reports and Formation of Committee Proposals (Time Permitting) 4. Old Business 5. New Business 6. Adjourn at 12:00PM ET

Address List No PhoneIndustrial Trucks IND-AAA

Paul May6/17/2011

IND-AAADavid B. WechslerChairThe Dow Chemical CompanyProcess Safety Technology Center2301 North Brazosport Blvd, APB-2481Freeport, TX 77541-3257American Chemistry Council

U 4/16/1999IND-AAA

Jeffrey H. BaileyPrincipalMan & Material Lift Engineering5707 South Pennsylvania AvenueCudahy, WI 53172

M 11/2/2006

IND-AAALewis C. BarbePrincipalWorld Safety Organization6320 Limerick LaneEdina, MN 55435

SE 1/1/1988IND-AAA

Curtis A. BenderPrincipalTennant Company12875 Ransom StreetHolland, MI 49424American Association of Cleaning EquipmentManufacturers

M 8/5/2009

IND-AAAScott W. BichanPrincipalFM Approvals, LLC743 Reynolds RoadWest Glocester, RI 02814

I 1/10/2008IND-AAA

John M. JacovettyPrincipalBASF Corporation554 Englehard DriveSeneca, SC 29678

U 4/16/1999

IND-AAAChris P. JamesPrincipalUnderwriters Laboratories Inc.12 Laboratory DrivePO Box 13995Research Triangle Park, NC 27709-3995

RT 1/14/2005IND-AAA

John M. MertensPrincipalFyrsafe Engineering, Inc.1225 Carnegie Street, Suite 108Rolling Meadows, IL 60008

U 4/28/2000

IND-AAABrian N. TyrerPrincipalPyroban LimitedEndeavour WorksDolphin Road, Shoreham by SeaWest Sussex, BN43 6QG United Kingdom

SE 7/1/1995IND-AAA

Kenneth R. Van HookPrincipalMitsubishi Caterpillar Forklift America Inc.9154 Will Clayton ParkwayHumble, TX 77338Industrial Truck Association

M 1/1/1991

IND-AAAPaul MayStaff LiaisonNational Fire Protection Association1 Batterymarch ParkQuincy, MA 02169-7471

6/29/2007

1

Pending Committee Approval

NFPA 1 Batterymarch Park, Quincy, MA 02269‐9101 USA

Phone: (617) 770‐3000 Fax: (617) 984‐0700 www.nfpa. org

TECHNICAL COMMITTEE ON INDUSTRIAL TRUCKS TO: TECHNICAL COMMITTEE ON INDUSTRIAL TRUCKS FROM: Paul May, Staff Liaison/David Wechsler, Chairman DATE: April, 2009 SUBJ: Minutes of April 7, 2009 Meeting _______________________________________________________________________ I. Attendance: Members and Alternates: David Wechsler, American Chemistry Council, Chair Jeffrey Bailey, Man & Material Lift Engineering, Principal Lewis Barbe, World Safety Organization, Principal Scott Bichan, FM Global, Principal John Jacovetty, BASF Corporation, Principal John Mertens, Fyrsafe Engineering, Inc., Principal Kenneth Van Hook, Industrial Truck Association, Principal Robert Zuiderveld, Pyroban, Principal Paul May, NFPA, Staff Liaison Guests: Chris Merther, Industrial Truck Association, Guest Michael Frasier, Mitsubishi Caterpillar Forklift Sondra Ullman, Plug Power II. Minutes of Meeting: 1. The meeting was called to order by Dave Wechsler at 1:30 PM ET, Tuesday, April 7, 2009, at the

Pending Committee ApprovalHouston Business Roundtable office, Houston, TX, and welcomed attendees via webconference. 2. All members and guests were self-introduced. 3. The Staff Liaison reviewed the general meeting procedures and available voting options. 4. The minutes of the previous meeting (July 2008 at NFPA Headquarters, Quincy, MA) were approved as submitted. 5. The Committee completed action on all 9 Public Comments submitted to NFPA 505, as well as developed 1 additional Committee Comment (item 5b below). Details of the Committee action may be seen in the Committee Ballot document. Highlights of these actions are as follows:

5a. The inclusion of Task Group work to finalize the restructuring of chapter 4 to address NEC hazardous classified location definitions of Class I, Division 1 and 2, Groups A, B, C and D, and Class II, Divisions 1 and 2, Groups E, F and G, as well as the Class I, Zones 1 and 2, Groups C, B and A.

5b. Inserted material pertaining to potential harm to those in exposure range of hydraulic hose breaks. This material failed to reach the 2/3 needed to pass the official balloting.

6 The committee held for further study material being proposed dealing with the following: a) removing

Type S trucks from the document, b) insertion of requirements involving Zone 1 and 2 Type trucks, and c) the potential hazards associated with the ability for certain tires to generate and release static discharge. While there were no proposals offered, the Committee did consider a need to address hybrid vehicles. All of these will attempted to be dealt with at the next NFPA revision cycle. To aid in this work, the chair has established four new technical sub-teams as follows:

Sub Team 1: Hybrid Industrial vehicles - Objective: considering other NFPA documents addressing hybrid vehicles, what changes should be made to NFPA 505 to bring better agreement or what additional information is needed to provide a basis for testing/approvals? Sub Team 2: Static Electricity and white tires- Objective: some data has raised some concerns regarding the use of "white" colored, so called non-marring or non-marking tires which may generate static electricity at levels higher than that experienced with normal black tires. Does this static issue arise only in one type of vehicle or might this be an issue independent on vehicle type? If this data is correct there may be issues with using vehicles without proper static controls in hazardous classified locations and therefore changes to NFPA 505 or maybe even a TIA may be needed. Sub Team 3: Zone designations for Industrial vehicles - Objective: the current Industrial vehicle "types" may not be consistently found globally and perhaps some Industrial vehicles may in fact be certified for a Zone 2 condition. NFPA 505 does not specifically address this condition. Should it? Sub Team 4: Evaluation of fire incident data and a possible need for re-consideration of current Industrial vehicle applications.- Objective: NFPA has provided the Committee with data indicating industrial vehicles have been involved with fires. There seem to be concerns that perhaps some of the current Type permitted uses may

Pending Committee Approvalnot be correct. Is there data to support or challenge the past practice or a need to make changes to NFPA 505? Under separate email from the Chair, invitations were sent out to Committee members soliciting interest in volunteering to participate in more or more of these sub- teams. Each Committee member is again asked to contact the Chair at the email address below, to let us know of your continued interest in working on one or more of these sub-teams.

7. The Chair agreed to write a letter to the NFPA Standards Council in order to express the Technical Committee on Industrial Truck’s wishes to enter cycle at the earliest time that is allowable by the NFPA regulations. This request has been made and approved by the Standards Council. The revised one time cycle for NFPA 505 will be:

Pending Committee Approval8. There was no old or new business to discuss. 9. Next meeting locations were brought forward for the committee to consider included MN or TX areas, but nothing was decided upon at the conclusion of this meeting. The most desired location would be one sponsored by a Committee member. If you would like to host a meeting, please advise Staff so that proper plans can be made for the next face-to-face meeting. 10. There being no further business, the meeting was adjourned at 4:15 PM ET. Respectfully submitted, Paul May, Staff Liaison David Wechsler, Chair [email protected]

2012 FALL REVISION CYCLE

PROCESS

STAGE PROCESS STEP DATES

FOR TC DATES

FOR TCC 1 PRELIMINARY 1.0 Notification of intent to enter cycle 1/7/11 1/7/11

2 REPORT ON PROPOSALS

(ROP)

2.1 Proposal closing date 5/23/11* 5/23/11* 2.2 Final date for ROP meeting 8/26/11 8/5/11 2.3 Final date for mailing TC ballots 9/16/11 8/19/11 2.4 Receipt of (TC) ballots by staff liaison 10/21/11 9/9/11 2.5 Receipt of TC recirculation ballots 11/4/11 9/16/11 2.6 Final date for TCC meeting 10/14/11 2.7 Final date for mailing TCC ballots 10/21/11 2.8 Receipt of TCC ballots 11/11/11 2.9 Receipt of TCC recirculation ballots 11/18/11 2.10 Final copy (w/ ballot statements) to Secretary, Standards Council 11/11/11 11/25/11 2.11 Completion of Reports 11/18/11 12/2/11 2.12 ROP Published and Posted 12/23/11 12/23/11

3 REPORT ON COMMENTS

(ROC)

3.1 Comment closing date 3/2/12 3/2/12 3.2 Final date for ROC meeting 5/4/12 4/6/12 3.3 Final date for mailing TC ballots 5/18/12 4/20/12 3.4 Receipt of (TC) ballots by staff liaison 6/1/12 5/11/12 3.5 Receipt of TC recirculation ballots 6/8/12 5/18/12 3.6 Final date for TCC meeting 6/15/12 3.7 Final date for mailing TCC ballots 6/22/12 3.8 Receipt of TCC ballots 7/13/12 3.9 Receipt of TCC recirculation ballots 7/20/12 3.10 Final copy (w/ ballot statements) to Secretary, Standards Council 6/22/12 7/27/12 3.11 Completion of Reports 7/13/12 8/3/12 3.12 ROC Published and Posted 8/24/12 8/24/12

4 TECH SESSION PREPARATION (& ISSUANCE)

4.1 Notice of Intent to Make a Motion (NITMAM) Closing Date 10/5/12 10/5/12 4.2 Posting of Filed NITMAM (Motions Committee Report) 11/2/12 11/2/12 4.3 Appeal Closing Date for Consent Documents or without NITMAM 11/17/12 11/17/12

4.4 Council Issuance for Consent Documents or without NITMAM 11/27/12 11/27/12

5 TECHNICAL SESSION 5.0 Association Meeting for Documents with Certified Amending Motions 6/10-13/13 6/10-13/13

6 APPEALS & ISSUANCE

6.1 Appeal closing date for Association Meeting Documents 6/26/13 6/26/13 6.2 Council issuance for Association Meeting Documents 8/1/13 8/1/13

* Proposal Closing Dates may vary according to documents and schedules for Revision Cycles may change. Please check the NFPA website (www.nfpa.org) for the most up-to-date information on proposal closing dates and schedules.

Report on Proposals – November 2012 NFPA 505_______________________________________________________________________________________________505- Log #CP1

_______________________________________________________________________________________________Technical Committee on Industrial Trucks,

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.

_______________________________________________________________________________________________505- Log #13

_______________________________________________________________________________________________Jeffrey H. Bailey, Man Lift Manufacturing Co.

Revise text to read as follows:NFPA 505 Fire Safety Standard for Powered Mobile Equipment Industrial Trucks.

Problem: There are products produced that are battery powered or internal combustion enginepowered that are not considered "trucks". Limiting this class of mobile equipment results in fewer manufactures usingthis standard and fewer operators being protected by the safety enhancements this standard provides.The same safety standards should apply to tugs, carts, aerial work platform, cranes or any type of powered mobile

equipment. Many of the NRTL's are already including these in their evaluations. This standard needs to evolve from theoriginal focus on fork trucks.

_______________________________________________________________________________________________505- Log #14


Revise text to read as follows:This standard shall apply to any type of mobile equipment powered by electric motors or internal combustion engines.

Typical examples are fork trucks, tractors, telehandlers, motorized hand trucks, aerial work platforms and machinerycarts. All existing text deleted.

This is an extension to the request to change the title (MLE-1). The same safety standards shouldapply to tugs, carts, aerial work platform, telehandlers, cranes or any type of powered mobile equipment. Many of theNRTL's are already including these in their evaluations. This standard needs to evolve from the original focus on forktrucks.

_______________________________________________________________________________________________505- Log #7

_______________________________________________________________________________________________John F. Bender, Underwriters Laboratories Inc.

Revise text to read as follows:The design and installation of compressed gaseous hydrogen (CGH) fuel systems for fuel cell system–powered

electric industrial trucks shall be in accordance with ANSI/UL 2267.Reason: Add ANSI approval designation to ANSI/UL 2267.

1Printed on 6/16/2011

Report on Proposals – November 2012 NFPA 505_______________________________________________________________________________________________505- Log #8


Revise text to read as follows:Fuel cell power systems shall be listed by a testing laboratory for the use intended and shall be tested and

labeled in accordance with ANSI/UL 2267.Reason: Add ANSI approval designation to ANSI/UL 2267.

_______________________________________________________________________________________________505- Log #9


Revise text to read as follows:Underwriters Laboratories Inc., 333 Pfingsten Road, Northbrook, IL 60062-2096.

ANSI/UL 558, , 1996, Revised 2008 2010.ANSI/UL 583, , 1996, Revised 2007 2010.ANSI/UL 2267, , 2006, Revised 2011.

Reason: Add ANSI approval designation to ANSI/UL 2267 and update referenced standards to mostrecent edition.

_______________________________________________________________________________________________505- Log #22

_______________________________________________________________________________________________Aaron Harris, Nuvera Fuel Cells

Add new text to read as follows:A compressed hydrogen powered unit utilizing a fuel cell for conversion of fuel gas to

electricity that has minimum acceptable safeguards against inherent fire hazards.Renumber accordingly Sections 3.3.2.1 through 3.3.2.18.

Type CGH exists throughout the document with no definition.

_______________________________________________________________________________________________505- Log #17


Proposal is to create a group to develop the DX standard.Problem: There is not an accepted standard for Diesel Powered trucks for Class I, Division 1. There is

an industrial need for these in the United States. Some people have excepted ATEX and some people use equipmentthat may be designed using various references as design guides.




Proposal is to create a group to include EX electrical in the DY standard so that a Class I, Division2 truck is a viable option.

Problem: There is not a viable standard for Diesel Powered trucks for Class I, Division 2. Therequirement in UL558 Type DY identifies NO Electrical. The alternative is pneumatic systems and these have notproven to be effective for mobile equipment. Therefore, few exist and most people are disappointed in the performance.Some engine modification companies claim to have DY compliance by doing it this way. The United States needs aviable standard or to approve ATEX.



_______________________________________________________________________________________________Lewis C. Barbe, World Safety Organization

Add new definitions and a new section on hoses and fittings to read as follows:Structures shaped in such a way as to limit the operator's

compartment, separating it from the transmission parts and small units in order to protect personnel from moving parts,heat, noise, lubricants and dust.

Shields of fail safe design which covering the hydraulic system hoses to protect the operatorfrom hazards due to leaking or bursting hoses to protect the operator from hazards due to leaking or bursting hoses.

Hose guards should be so designed, constructed and used that it will:(a) provide positive protection;(b) prevent all access to the danger zone during operations;(c) cause the operator no discomfort or inconvenience;(d) not interfere unnecessarily with production;(e) operate automatically or with minimum effort;(f) be suitable for the job and the machine;(g) preferably constitute a design, integral built-in feature;(h) provide for machine oiling, inspection, adjustment and repair;(i) withstand long use with minimum maintenance;(j) be durable, fire- and corrosion-resistant;(k) not constitute a hazard by themselves (without splinters, sharp corners, rough edges, or other sources of

accident(s); and(l) protect against foreseeable use and foreseeable misuse of operational contingencies, not merely against normally

expected hazards as determined from a job safety analysis.

9.7 Hoses and Fittings.9.7.1 Where hoses are used operating, and located that any discharge of the contents of the hose will endanger the

operator, deflecting shields (see Figure 9.7.1 shall be provided to protect the operator from sudden hose failure.9.7.2 The manufacturer of the vehicle shall provide a preventative maintenance replacement schedule for hoses

together a complete inspection procedure.9.7.3 Hoses shall where possible be designed out of the vehicles which contain hydraulic fluid or fuel under pressure

and elevated temperature.9.7.4. All hoses shall be designed to be fail safe in the event of a hydraulic or fuel hose rupture.9.7.5 Hydraulic hoses or fuel hoses shall be guarded to prevent the fire ball from a ruptured hose entering the zone of

safety where the operator is located.

***INSERT FIGURE 9.7.1 AN EXAMPLE OF GUARDS ON HOSES here***

I am directly aware of incidents regarding fires that have occurred and have resulted in the loss of life.The hazards are reported to include a fireball that develops together with the pressure of the burning hydraulic fluid,which acts like a flame thrower.Where hoses are used operating, and are located that any discharge of the contents of the hose will endanger the

operator, deflecting shields should be provided to protect the operator from sudden hose failure. Oil temperaturesexceed 450 degrees AND PRODUCE DEVASTATING BURNS AND FIRES.



_______________________________________________________________________________________________

David Wechsler, Rep. American Chemical AssociationAdd a new FPN under section 4.1.2 of the CP2 draft as follows:

FPN: Industrial trucks equipped with “white” ‘non –marking’ or ‘non-marring’ tires may generate static electrical chargewhich may pose an ignition hazard when used in hazardous classified locations.

Action from the NFPA 505 ROP meeting was to modify Chapter 4 to utilize the NEC Article 500 et alHazardous (Classified) area defined terms. Section 500.4 (B) FPN No. 1 indicates that it is important that the authorityhaving jurisdiction be familiar with not only a number of standards, like those of the National Fire Protection Association,but also protection against static electricity. Static electricity is not currently addressed in this Chapter, but users need tobe aware that “white” ‘non-marking’ or ‘non-marring’ tires seem to have the potential to generate static electricity whichmight possibly be an ignition source if not properly addressed by following manufacturer recommendations. This FPNsimply provides a warning to uses of lift trucks equipped with these types of tires.

_______________________________________________________________________________________________505- Log #23


Revise text to read as follows:Power-operated industrial trucks that previously have been approved for, or that conform to the requirements for,

Type CN, Type G, Type LP, Type G/CN, or Type G/LP shall not be converted to a type designation for use in hazardous(classified) locations, such as conversion of LP to LPS, G to GS, or CN to CNS. Power-operated industrial trucks thatpreviously have been approved for, or that conform to the requirements for Type EE, ES, EX shall not be converted to aType CGH for use In hazardous (classified) location.

Explicit statement of the restriction on Type CGH trucks. Eliminates the ambiguity of conversion kitsdescribed in Section 7.




Revise text to read as follows:The EE & ES should be: NA for all hazardous location .

Problem: trucks are being used in based on misinformation ofstandards Potential explosion may exist with loss of life.The UL583 document for E and EE type trucks was written for "fire and shock" protection (ordinary locations). There

were not any protection methods specifically designed for "explosion" protection from explosive gases or dusts. It isclearly stated in UL583 that the only product TYPE where "explosion hazards" (hazardous location) are considered iswith TYPE EX. Type EE only considers shock hazards and fire hazards that occur from over-heating (not gas or dustexplosion).A document specific to this topic was submitted to the committee on 9/22/2008 from Robert Zuiderveld (previous

committee member) which included an email from Francis Mah, Hazardous Locations Specialist at Underwriters Labs(Attached file: Questions about UL 583). Statements that apply from Mr. Mah are as follows:1)

"2) "

"Trucks that are designed and tested to the Ordinary Location Type EE and ES should not be allowed to operate in

Hazardous Locations. These should be changed from to in table 4.2(a) & (b).

_______________________________________________________________________________________________505- Log #2

_______________________________________________________________________________________________

Robert Zuiderveld, Servolift/SichelschmidtRemove all "S" type equipment labels Table 4.2.1 Division Summary Table on Use of Powered

Industrial Trucks. changing the "J" in these tables to "NA" .

Heat sources on "S" type powered industrial equipment and the introduction of catalytic converterswhich have surface temperatures exceeding 1100F make these equipment types incredibly dangerous when operated inClass 1 and Class 2 hazardous areas.The NFPA report "Industrial Loader and Forklift Fires" published in January, 2009 states that on average 1340 fires are

ignited by heat sources on forklift and loader.The fact that NFPA 505 implies that "S" type equipment can be considered for use in potentially explosion hazardous

areas is in direct contrast with the committees and the NFPA 505 ultimate goal of fire prevention.



_______________________________________________________________________________________________

Robert Zuiderveld, Servolift/SichelschmidtRemove all "S" type equipment from consideration by Authority having Jurisdictions in Table 4.2.2

Zone - Summary Table on Use of Powered Industrial Trucks by changing the "J" to "NA".Heat sources on "S" type powered industrial equipment and the introduction of catalytic converters

which have surface temperatures exceeding 1100F make these equipment types incredibly dangerous when operated inClass 1 and Class 2 hazardous areas.

The NFPA report "Industrial Loader and Forklift Fires" published in January, 2009 states that on average 1340 fires areignited by heat sources on forklift and loader.

The fact that NFPA 505 implies that "S" type equipment can be considered for use in potentially explosion hazardousareas is in direct contrast with the committees and the NFPA 505 ultimate goal of fire prevention.

_______________________________________________________________________________________________505- Log #4

_______________________________________________________________________________________________

Robert Zuiderveld, Servolift/SichelschmidtAdd a column for Zone 1 Type equipment in Table 4.2.2 Zone - Summary Table on Use of

Powered Industrial Trucks and allow its use in Zone 1 II and Zone 2 hazardous areas.By adding the Zone concept to NFPA 505, it is only logical that equipment of the Zone 1 type may be

considered for use in Zone 1 IIA and Zone 2 hazardous areas.

_______________________________________________________________________________________________505- Log #5

_______________________________________________________________________________________________

Robert Zuiderveld, Servolift/SichelschmidtAdd a column for Zone 2 Type equipment in Table 4.2.2 Zone - Summary Table on Use of

Powered Industrial Trucks and allow its use in and Zone 2 hazardous areas.By adding the Zone concept to NFPA 505, it is only logical that equipment of the Zone 2 type may be

considered for use in Zone 2 hazardous areas.



_______________________________________________________________________________________________

Robert Zuiderveld, Servolift/SichelschmidtRevise text to read as follows:

4.3.3.12.3.2 Storage.4.2.3.2 In locations used for the storage of flammable liquids in sealed containers or liquefied orcompressed flammable gases in containers, approved power-operated industrial trucks designated as Types CNS, DS,ES, GS, LPS, GS/CNS, and GS/LPS shall be permitted to be used where approved by the authority having jurisdiction.4.4.4.2*2.7.2* 4.2.7.2* Type CNS, Type DS, Type ES, Type GS, Type LPS, Type GS/CNS, or Type GS/LPS industrial

trucks shall be permitted to be used if approved.4.4.5.2.1 4.2.9 Power-operated industrial trucks designated as Type CNS, Type DS, Type DX, Type DY, Type ES,

Type EE, Type EX, Type GS, Type LPS, Type GS/CNS, or Type GS/LPS shall be used in locations where easilyignitible fibers are stored or handled, including outside storage, but where such fibers are not processed ormanufactured.4.85.2.1.1 Approved power-operated industrial trucks designated as Type CNS, Type DS, Type ES, Type GS, Type

LPS, Type GS/CNS. Type GS/LPS4.85.2.2 Group IIC and IIB4.85.2.2.1 Approved power-operated industrial trucks designated as Type CNS, Type DS, Type ES, Type GS, Type

LPS, Type GS/CNS, Type GS/LPS, Type DX, Type DY, Type EE and Type EX, suitable for use in Class I, Zone 2,Group IIC and IIB locations shall be permitted to be used.4.85.2.3 Other Locations4.85.2.3.1 In locations used for the storage of flammable liquids in sealed containers, or liquefied or compressed

flammable gases in containers, approved power-operated industrial trucks designated as Type CNS, Type DS, TypeES, Type GS, Type LPS, Type GS/CNS, and Type GS/LPS, Type DX, Type DY, Type EE and Type EX shall bepermitted to be used.

"S" Type equipment only offers uncertified for use in hazardous areas added safety against electricalarcs and sparks.UL 585 and UL 558 do not require the following potential ignition sources to be addressed on "S" type equipment

making them unsuitable for consideration of use in potentially explosion hazardous areas.• Flame or spark emission from the exhaust system• Over-speeding from vapor ingestion• Surface temperatures• Arcs and Sparks from electrical equipment• Sparks from the discharge of static electricity• Sparks from friction• Sparks from impactIt is irresponsible and highly questionable that NFPA-505 implies that Authority Having Jurisdictions can consider this

type of equipment as suitable for use in potentially explosion hazardous areas. This standpoint appears to be in directcontradiction with the goal of improving fire safety of powered industrial equipment




Revise text to read as follows:Where it is determined that the location on piers and wharves used for handling general cargo

is not hazardous, approved, power-operated industrial trucks designated as Type CGH, Type CN, Type 0, Type E, TypeG, Type LP, Type G/CN, or Type G/LP or trucks that conform to the requirements for these types shall be permitted tobe used.

Include Type CGH in sections where Type E already exists. The Type CGH truck is intended for useonly in Type E environments at this time. Text should reflect both inclusions (environments where the truck is authorizedfor use) as well as exclusions (environments where the truck is not authorized for use).

_______________________________________________________________________________________________505- Log #25


Revise text to read as follows:Where is it determined that the location for general storage in warehouses

or general outside storage is not hazardous, any, power-operated industrial trucks designated as Type CGH, Type CN,Type 0, Type E, Type G, Type LP, Type GICN, or Type G/LP shall be permitted to be used, or trucks that conform to therequirements for the specified types shall be permitted to be used.


_______________________________________________________________________________________________505- Log #26


Revise text to read as follows:Where it is determined that the location on a general industrial or commercial

property used for handling or processing materials (with storage being incidental to handling and processing), or forboth, is not hazardous, any approved power-operated industrial truck designated as Type CGH, Type CN, Type D, TypeE, Type G, Type LP, Type G/CN or Type G/LP shall be permitted to be used, or trucks that conform to the requirementsfor the specified types shall be permitted to be used.


_______________________________________________________________________________________________505- Log #27


Revise text to read as follows:A truck designated as Type E, Type ES or Type EE that is converted to another of those designations shall

conform to the requirements for the new designation in accordance with ANSI/UL 558583.Editorial. The reference is incorrect.




Revise text to read as follows:Conversion kits for converting a Type E, Type ES, or Type EE truck to a fuel cell powered electric industrial truck

shall conform to the applicable requirements of ANSI/UL 583 and ANSI/UL 2267.Reason: Add ANSI approval designation to ANSI/UL 2267.

_______________________________________________________________________________________________505- Log #28


Add new text to read as follows:Kits for the conversion of Types E to Type CGH trucks including battery replacement modules as described by

UL2257, shall include(1) Written approval from the vehicle OEM for the conversion(2) Assessment of the effect on truck center of gravity by a person qualified to perform such an assessment(3) Step-by-step Installation instructions with illustrations, if necessary(4) All parts necessary to complete the installation, including the following:(a) Functional components(b) Mounting brackets and hardware(c) Connecting wires, hoses, and fittings(d) Sealants, if required

(5) A durable corrosion-resistant plate, indicatinq the converted type designation of the truck(6) A metal nameplate attached to the CGH module (for battery replacement conversions) compliant to the marking

requirements of UL2267.(7) Instructions for removal or deactivation of the existing components or functions related to Type E operation.(8) Instructions covering checks and tests Lo be performed after the conversion and prior to putting the truck into

serviceCurrent practice is the replacement of batteries in existing Type E vehicles with a similarly sized and

weighted hydrogen powered fuel cell system. In the proposed process the vehicle OEM retains supervision of theprocess. An informal validation of fuel cell systems is currently in place. As a redundant administrative safety, theinstaller must perform a site specific center of gravity assessment to prevent tip-over during operation. This method alsoaddresses the need for an additional nameplate.

_______________________________________________________________________________________________505- Log #29


Revise text to read as follows:The compression, storage, handling, and dispensing of compressed natural gas (CNG) and CGH shall be

located and conducted in accordance with NFPA 52 and the compression. storage, handling and dispensing ofcompressed hydrogen gas (CGH) shall be located and conducted in accordance with NFPA 2.

Reference should reflect the NFPA 2 -2011 document published in April 2011.




Revise text to read as follows:The engine truck shall be stopped disabled and the operator shall not be on or inside the truck during refueling.

Intent of this statement is prevention of 'drive-offs' the statement must accommodate both CNGengines and fuel cell battery hybrid engines. Batteries are not capable of being 'turned off' therefore the statement ismisleading. While turning off the CNG engine effectively disables the truck, electric trucks are disabled when theoperator is no longer sitting or standing in the driver's compartment due to electrical safety interlocks.

_______________________________________________________________________________________________505- Log #31


Revise text to read as follows:Containers, valves, and hose and fittings shall be protected from physical damage using the vehicle

structure, valve protectors, or suitable guards in accordance with NFPA 52 for Type CNG trucks and NFPA 2 for TypeCGH trucks.

Reference should reflect the NFPA 2 -2011 document published in April 2011.

_______________________________________________________________________________________________505- Log #32


Revise text to read as follows:A CNG and CGH cylinder shall not be charged in excess of its maximum allowable working pressure at the

normal temperature for the cylinder.A CGH cylinder shall be fueled in accordance with NFPA 2.

Renumber accordingly.Reference should reflect the NFPA 2 -2011 document published in April 2011.

_______________________________________________________________________________________________505- Log #33


Revise text to read as follows:CNG-powered or CGH fuel cell system-powered trucks shall not be parked near sources of heat or open

flames (such as welding stations or furnace burners) or similar sources of ignition.Editorial adjusted wording to better reflect the intent and provide specific, common examples.




Add new text to read as follows:For Type CNG trucks, the service valve of the fuel container shall be closed whenever vehicles are parked

overnight or stored indoors for a protracted time.For Type CGH trucks the fuel cell system shall be shutdown and the isolation valve de-energized in the

closed position whenever the vehicles are parked for protracted time.Valves on CGH trucks are inaccessible for day to day operations. Tank valves are only accessible

when the battery replacement module is removed from the system. UL 2267 prescribes a permanently mounted tank.



_______________________________________________________________________________________________Mindy Wang, Ampco Safety Tools

Add new text to read as follows:Tools and other metal objects shall be kept away from the tops of uncovered batteries. Tools and equipment for

work on batteries shall be equipped with handles listed as insulated for the maximum working voltage. Spark resistanttools shall be required when the hazard identification and risk assessment justify their use.

Although there is a ventilation provision in paragraph 9.3.2.1, we believe that guidance is prudent in the event that aflammable environment develops as could be expected with ventilation or equipment malfunction. In “Guidelines for FireCorps Standard Operating Procedures in the Event of Hydrogen Releases”, N. Grasso and the others stated that“Hydrogen is colorless, odorless, tasteless and therefore not detectable by the human senses”. Hydrogen can exceed1% concentration in battery charging area due to ventilation or equipment failure. For example, based on theassumptions and examples given by GB Industrial Battery on their website athttp://giantbatteryco.com/GLOSSARY/Calculate.Industrial.Battery.Hydrogen.Gas.Emission.html, a typical lead acidmotive power battery develops approximately 0.01474 cubic feet of hydrogen per cell at standard temperature andpressure, 20% of overcharge during a recharge, 6-hour rated capacity of battery in ampere hours, gas released duringthe last 4 hours of an 8-hour charge, 24 cells per battery, 450 ampere size battery, hydrogen concentration can becalculated (24 × 0.2 × 0.01474 × 450)/4 = 7.9596 cubic feet per battery per hour. Assume 5 batteries are in the chargingarea, 7.9596 × = 39.79 cubic feet of hydrogen released per hour. For a room with a flat roof, 20 feet long, 30 feet wide,20 feet tall, room size is 20 × 30 × 20 = 12,000 cubic feet, it will only take 12 hours for hydrogen to reach its LEL of 4%concentration. In a smaller room such as 12’ × 14’ × 12’ = 2,016 cubic feet, it will only take 2 hours for hydrogen to reachits LEL of 4% concentration. The point is that in the event of ventilation or equipment failure, batteries can quickly createa flammable environment that is not detectable by the human senses.Non-sparking hand tools are used to guard against mechanical sparks such as impact and friction sparks, which are

both a potential ignition source in flammable environments. Hand tools used on batteries such as pliers, screwdriverswrenches, and sockets are used in a torque application, i.e. tools will make contact in a rubbing action. Friction sparksare generated from rubbing or surface contact between steel and other materials. While insulated steel tools protectagainst electrical shock, they can still generate friction sparks and therefore create an ignition hazard in a flammableenvironment. This occurs when the exposed metal parts of the insulated steel tool rub against another hard surfacesuch as steel nuts and bolts used on the terminal clamps.

In a document entitled, Frictional Sparking, Martin Sheldon stated that “It is well known that the sharpening of steeltools on a grindstone is accompanied by showers of sparks.” Sheldon went on to say “frictional heating and sparkoccurs when two solid bodies come into contact with each other, because of microscopic surface irregularities, they donot touch over the whole of their surfaces but only at a relative few spots. At the actual contact spots adhesion occursbetween the two bodies and if they are moved relative to each other the work necessary to overcome this adhesion isconverted into heat, raising the temperature of the bodies…As the contact spots are forced apart fragments of thematerials may be broken off and projected into the surroundings…These small particles of material have arisen from theareas where work was expended. If these particles are heated sufficiently the glowing particles will appear as frictionalsparks.”In a test study conducted by W. Bartknecht, Ignition Capability of Hot Surfaces and Mechanically Generated Sparks in

Flammable Gas and Dust/Air Mixtures, showed that if steel is rubbed against steel for a longer duration, (0.5-2.0seconds), as could be expected in hand tool use, then friction sparks are generated. It goes on to conclude that Steelfriction sparks are more ignition-effective then steel grinding sparks.Another test by R.E. Bruderer, Ignition Properties of Mechanically Sparks and Hot Surfaces in Dust/Air Mixtures,

reported that “systematic tests with steel friction sparks resulted in the ignition of the easily ignitable flammable gases(hydrogen) and combustible dusts.”M.J. Burgess and R.V. Wheeler also reported immediate ignitions of hydrogen-air obtained by rubbing mild steel on

mild steel at 2 meter per second in Safety Mines Research Bd. Paper 46, H.M.S.O.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.OSHA Flammable and Combustible Liquids regulation, 29 CFR Parts 1910.106(b)(6) states that precaution shall be

taken to eliminate or control sources of ignitions including frictional heat and mechanical sparks to prevent the ignition of


Report on Proposals – November 2012 NFPA 505flammable vapors.In Frictional Sparking, Martin Sheldon reported steel friction sparks are incandescent particles at temperatures around

1500°C/2732°F.NFPA 921, Guide for Fire and Explosion Investigations 2008 Edition, Chapter 5 Basic Fire Science Table 5.76.1.1

Reported Burning and Sparking Temperature of Selected Ignition Sources under Mechanical Sparks lists a Steel toolspark temperature at 2550°F.NFPA Handbook 20th edition, Section 9, Chapter 17 Oxygen-Enriched Atmospheres, Table 9.17.3 Ignition and

Flammability Properties of Combustible Liquids and Gases in Air and Oxygen at Atmospheric Pressure, Hydrogen-airmixtures have a minimum ignition temperature of 520°C/968°F. Therefore the temperature of a steel spark far exceedsthe minimum ignition temperature of hydrogen which means that when the atmosphere is flammable, a steel tool sparkis capable of igniting hydrogen.Recognizing the potential for steel tools to be an ignition source in flammable environments, the Occupational Safety &

Health Administration (OSHA) provides guidance in booklet 3080 Hand and Power Tools, 2002 revised, “iron and steelhand tools may produce sparks that can be an ignition source around flammable substances. Where this hazard exists,spark-resistant tools should be used.”OSHA eTools, Powered Industrial Trucks (Forklift), Parts of An Industrial Batter, Requirements and Recommended

Practices states that “Use only non-sparking, non-conductive tools.”Therefore, friction from continuous or intermittent contact between steel and other materials giving a rubbing action can

produce sparks that are capable of igniting hydrogen.

This sample of OSHA documented accidents illustrates that accidents do happen when proper safety measures arenot taken to guard against friction sparks from steel tools.Listed as accident #82 on dust incident data compiled by the Chemical Safety Board (CSB), an explosion resulted as a

spark created by a worker with an Allen wrench who was turning a screw to adjust a machine. The spark ignited somepropellant dust and a vacuum system carried the fire another room where a barrel of dust exploded.OSHA inspection #124728437, employee #1 and a coworker, both maintenance mechanics, were working in a 30 in.

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 #126764497, employee #1 was performing maintenance work on equipment used to make ignition

caps for automotive air bags. He ran into some problems and called maintenance, but instead of waiting for them toarrive, he dismantled and attempted to reassemble the parts. In the process, he put in a part upside down. The part hadfour screws, and while two of them were still able to be installed, the other two no longer matched with their holes.Unaware that the part was upside down, Employee #1 tried to force one of the screws in at an angle. The frictionresulting from this effort ignited the cap's residual explosive material. Flames flashed up the sleeve of Employee #1'ssmock and he sustained third-degree burns to his arm.OSHA inspection #309946457, employee #1 was working in the hydrogenation area when he removed the lid from

Converter Number 1 and placed it on the ground next to the approximately 25-in.-diameter opening to the converter.Employee #1 then removed the gasket from around the lid and used a wire-brush grinder to remove the silicone that hadsealed the gasket to the lid. Converter Number 1 contained a mixture of vegetable oil and hydrogen. While Employee #1was grinding the lid, sparks mixed with the hydrogen and exploded. Employee #1 was thrown approximately 7 ft into theair and onto some overhead pipes. Employee #1's right arm was severed and he was killed.NFPA 505 provides guidance on the safe use, maintenance and operation of industrial trucks to minimize fire hazards.

As such, when considering battery charging area or room that can reasonably be expected to become flammableenvironments, friction sparks from insulated steel tools should not be overlooked as an ignition source. Unless it caneasily be determined that the hydrogen concentrations in the battery charging area are not within the flammability limits,it is a safer work practice to require the use of insulated non-sparking tools in these environments. Without added text,steel tools are likely to be used which in flammable environments expose employees to an explosion and fire hazard.Proposed text is consistent with provisions in NFPA 70E Standard for Electrical Safety in the Workplace, Article 320

which provides guidance on safe work practice on batteries.However, if upon further consideration, the Committee still does not see the need for restricting insulated steel tools in

flammable atmospheres, we ask the Committee to at least include the proposed text in Annex text to raise theawareness of ignition hazard associated with steel tools in direct contact with flammable materials.


Report on Proposals – November 2012 NFPA 505

_______________________________________________________________________________________________505- Log #35


Add new text to read as follows:

Section 9.4 shall apply to fuel cell system modules used to replace batteries in Type E trucks and replaceablefuel cell system modules in Type CGH trucks.

Chain hoists shall be equipped with load-chain containers [NFPA 505, 9.3.5]A properly constructed spreader bar or other appropriate lifting device shall be used with an overhead hoistSpreader bars shall be insulated where exposed electrical connections may contact the lifting device

Reinstalled Type CGH modules will provide eguivalent or greater counterbalance weight for the truckReinstalled Type CGH modules will provide eguivalent center of gravity with some tolerance for variability from

module to module. The variability in the center of gravity shall not affect the safe operation of the truck.Removal or replacement of batteries or other stored energy devices on Type CGH modules shall not require the

use of protective clothingTrained and authorized personnel shall change Type CGH modules.Smoking shall be prohibited in the Type CGH changing areaPrecautions shall be taken to prevent open flames (such as welding or furnace burners) in the changing area.

Renumber accordingly.Type CGH modules are intended to remain in trucks for day to day operation. Periodic service and

inspections will require removal of the unit from the truck. This chapter provides guidance modeled after Section 9.3 forthe removal and reinstallation of Type CGH modules in trucks.



_______________________________________________________________________________________________J. R. Nerat, Badger/Kidde Fire Protection

Revise text to read as follows:The type of extinguisher used on a truck shall be in accordance with the hazard classification guidance

provided in NFPA 10. Material handling vehicles such as forklifts, shall have a minimum of one 1A:10:B:C rated fireextinguisher properly mounted in a visible or marked location, that is accessible from ground level.

Material handling vehicles present various potential situations where spillage of combustible materialscan occur. Should ignition result, the ability of vehicle operators to quickly respond and address initial fire situations intheir earliest stage, represents the highest potential for successful extinguishment and personnel safety.The suggested 1A:10B:C rated fire extinguisher represents a reasonable minimum size and performance level,

necessary to address incipient fires in their earliest stage.The general NFPA-10 fire extinguisher selection, placement and distribution minimum recommendations for a given

facility do not address various vehicle product handling/spillage hazard conditions they can present. Minimum NFPA-10fire extinguisher recommendations are only established using three basic types of occupancy classifications and theanticipated quantities of fuel normally present.When an application presents special or contributing fire hazard safety considerations, they are expected to be

properly addressed by the standards responsible for them. The NFPA-505 standard specifically addresses fireprotection recommendations for industrial trucks, and is the likely source for obtaining proper minimum fire protectionguidance and recommendations associated with forklift operations.Examples of other NFPA standards addressing and containing specific minimum vehicle fire extinguisher

recommendations are as follows:NFPA-407 (2007) paragraphs 4.3.9.1, 4.3.9.2, 4.3.9.3, 4.3.9.4,NFPA-58 (2008) paragraphs 6.23.8, 7.2.3.8, 7.2.3.9, 9.3.5, 9.4.7NFPA-59A (2009) paragraph 12.6.4NFPA-385 (2007) paragraphs 9.3.1, 9.3.3NFPA-121 (2009) paragraphs 7.3.1, 12.2.1.1NFPA-307 (2006) paragraph 10.1.2NFPA-241 (2004) paragraphs 7.7.5, 11.7.2NFPA-495 (2006) paragraphs 8.2.6, 8.2.6.3, 8.2.6.5, 8.2.7.2(1)NFPA-610 (2009) paragraphs 7.2.2.2(1), 2.2.2.2(4)NFPA-1192 (2008) paragraphs 6.4.1.1, 6.4.1.2, 6.4.7.5Review of NFPA reports also indicate that U.S. fire departments alone respond to an estimated annual total of 1,340

structure and vehicle fires in which industrial loaders, forklifts or related material handling vehicles were directly involvedin ignition.




Revise text to read as follows:Specific standards that cover the types of industrial trucks defined in Section 3.3 have

been published by Underwriters Laboratories Inc. and are identified as ANSI/UL 2267, ANSIIUL 558 and ANSI/UL 583.ANSI/UL 2267 covers Type CGH trucks. ANSI/UL 558 covers Types D, OS, DY, G, GS, LP, LPS, G/LP, and GS/LPS;ANSI/UL 583 covers Types E, EE, ES, and EX. Standards for Types CN, CNS, G/CN, and GS/CNS trucks are not inpublished form; however, information regarding the requirements for these type designations is available fromUnderwriters Laboratories Inc.The examination of powered industrial trucks by Underwriters Laboratories Inc. relates tofire hazards only for Types 0, DS, DY, G, GS, LP, LPS, G/LP, and GS/LPS industrial trucks that are powered by internalcombustion engines; to fire and electrical shock hazards only for Types E, ES, and EE battery-powered industrial trucks;and to fire, electric shock, and explosion hazards for Type EX trucks that are suitable for use in Class I, Group D, orClass II, Group G, hazardous locations. Trucks that have been examined and classified as meeting the respectiveUnderwriters Laboratories standards for Type EX trucks can be found in the UL Hazardous Locations EquipmentDirectory. Other trucks that have been examined and classified as meeting the respective Underwriters Laboratoriesstandards for a particular area of use are identified in the UL Online Certification.

Editorial, added reference for UL2267 to appendix material.

_______________________________________________________________________________________________505- Log #37


Revise text to read as follows:Section 7.1 provides that responsibility for the acceptance of an industrial truck that has been converted rests

entirely with the inspection authority having jurisdiction . The responsibility for determining whether a truck has beenproperly converted is that of the authority having jurisdiction because it is impractical to ship each converted truck backto the testing laboratory to be reexamined or retested. It is also impractical for the laboratory to send a representativeinto the field to examine or test every converted truck.Authorities having jurisdiction are not always expert in recognizing the criteria that constitute a proper conversion.Installation directions furnished with conversion equipment, "Listed by Report," specify in detail how to perform theconversion so that it meets the requirements of NFPA 58 for trucks using liquefied petroleum Gas, NFPA 52 for trucksusing compressed natural gas and NFPA 2 for trucks using compressed hydrogen gas. The detailed instructions supplythe authority having jurisdiction with the necessary.information to determine whether a truck has been properly converted.

Added references to the appropriate NFPA documents.

_______________________________________________________________________________________________505- Log #11



ANSI/UL 558, , 1996, Revised 2007 2010.ANSI/UL 583, , 1996, Revised 2008 2010.Hazardous Locations Equipment Directory, 2008 2011.

Reason: Update referenced standards and directory to most recent revisions.





ANSI/UL 2267, Standard for Safety Fuel Cell Power Systems for Installation in Industrial Electric Trucks, 2006.Revised 2011.ANSI/UL 558, Standard for Safety Industrial Trucks, Internal Combustion Engine-Powered, 1996, Revised 2007.ANSI/UL 583, Standard for Safety Electric-Battery-Powered Industrial Trucks, 1996, Revised 2008.Hazardous Locations Equipment Directory, 2008.

Added references to the appropriate UL2267.


Chapter 2 Referenced Publications

2.1 General. The documents or portions thereof listed in this chapter are referenced within this standard and shall be considered part of the requirements of this document.

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

NFPA 10, Standard for Portable Fire Extinguishers, 2010 edition.

NFPA 30, Flammable and Combustible Liquids Code, 2008 edition.

NFPA 30A, Code for Motor Fuel Dispensing Facilities and Repair Garages, 2008 edition.

NFPA 52, Vehicular Gaseous Fuel Systems Code, 2010 edition.

NFPA 58, Liquefied Petroleum Gas Code, 2011 edition.

NFPA 70®, National Electrical Code®, 2011 edition.

2.3 Other Publications.

2.3.1 ANSI Publication. American National Standards Institute, Inc., 25 West 43rd Street, 4th floor, New York, NY 10036.

ANSI/ITSDF B.56.1, Safety Standard for Low-Lift and High-Lift Trucks, 20052010.

2.3.2 UL Publications. Underwriters Laboratories Inc., 333 Pfingsten Road, Northbrook, IL 60062-2096.

ANSI/UL 558, Standard for Safety Industrial Trucks, Internal Combustion Engine-Powered, 1996, Revised 20082010.

ANSI/UL 583, Standard for Safety Electric-Battery-Powered Industrial Trucks, 1996, Revised 20072010.

UL 2267, Standard for Fuel Cell Power Systems for Installation in Industrial Electric Trucks, 2006, Revised 2011.

2.3.3 Other Publications.

Merriam-Webster’s Collegiate Dictionary, 11th edition, Merriam-Webster, Inc., Springfield, MA, 2003.

2.4 References for Extracts in Mandatory Sections. (Reserved)

Annex C Informational References

C.1 Referenced Publications.

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

C.1.1 NFPA Publications. National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02169-7471.

NFPA 10, Standard for Portable Fire Extinguishers, 2010 edition.

NFPA 30, Flammable and Combustible Liquids Code, 2008 edition.

NFPA 30A, Code for Motor Fuel Dispensing Facilities and Repair Garages, 2008 edition.

NFPA 51B, Standard for Fire Prevention During Welding, Cutting, and Other Hot Work, 2009 edition.

NFPA 58, Liquefied Petroleum Gas Code, 2011 edition.


C.1.2 Other Publications.

C.1.2.1 ASTM Publication. ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959.

ASTM D 3175, Standard Test Method for Volatile Matter in the Analysis Sample of Coal and Coke, 2002.

C.1.2.2 UL Publications. Underwriters Laboratories Inc., 333 Pfingsten Road, Northbrook, IL 60062-2096.

ANSI/UL 558, Standard for Safety Industrial Trucks, Internal Combustion Engine-Powered, 1996, Revised 20072010.

ANSI/UL 583, Standard for Safety Electric-Battery-Powered Industrial Trucks, 1996, Revised 20082010.

Hazardous Locations Equipment Directory, 2008.

C.2 Informational References. (Reserved)

C.3 References for Extracts in Informational Sections.


NFPA 497, Recommended Practice for the Classification of Flammable Liquids, Gases, or Vapors and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas, 2008 edition.

NFPA 499, Recommended Practice for the Classification of Combustible Dusts and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas, 2008 edition.

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