1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULAPRIL 29, 20161UL 2003Outline of Investigation for LP-Gas Cylinder AssembliesIssue Number: 5April 29, 2016Summary of TopicsThis fifth issue of the Outline of Investigation for LP-Gas CylinderAsse
2、mblies, UL 2003, clarifies the Flammability Test and Permeation Testrequirements.ULs Outlines of Investigation are copyrighted by UL. Neither a printed norelectronic copy of an Outline of Investigation should be altered in any way. All ofULs Outlines of Investigation and all copyrights, ownerships,
3、and rights regardingthose Outlines of Investigation shall remain the sole and exclusive property of UL.COPYRIGHT 2016 UL LLCUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULAPRIL 29, 2016UL 20032No Text on This PageUL COPYRIGHTED MATERIAL NOT A
4、UTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .42 General 52.1 Components .52.2 Units of measurement .52.3 Undated references .53 Glossary .64 Pressure and Temperature Rating 7CONSTRUCTION5 Pressure and Temperature Rating 76 Valves and Connec
5、tions .97 Relief Device Installations .108 Gauging Devices 119 Information to be Supplied by the Manufacturer .12PERFORMANCE10 General 1211 Impact Test 1312 Drop Test 1313 Deformation Test .1414 External Leakage Test 1515 Direct Flame Exposure Test 1516 Radiant Heat Exposure Test .1617 Heated Rod Ex
6、posure Test 1618 Heat Release Rate Test .1719 Flammability Test .1820 Permeation Test 1921 Exposure and Physical Properties Tests .1921.1 General .1921.2 Ultraviolet-light and water exposure .2021.3 Exposure to household chemicals 2021.4 Physical properties tests 2022 Burst Test .20MANUFACTURING AND
7、 PRODUCTION TESTS23 General 21MARKINGS24 Details .21APPENDIX AStandards for ComponentsA1APRIL 29, 2016 UL 2003 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 These requirements cover refillable liquefied petroleum gas
8、(LP-Gas) cylinder assemblies employingU.S. Department of Transportation (DOT) type cylinders made from steel, aluminum, or compositematerials. Steel or aluminum cylinders will have a water capacity greater than 2.2 pounds (1 kg),equivalent to nominal 1-pound (0.5-kg) LP-Gas but not greater than 1000
9、 pound (454.5 kg) watercapacity, which is equivalent to 420 pound (191 kg) propane capacity. Seamless Composite Cylindershave a size limitation of 105 pounds (48 kg) water capacity, which is equivalent to 45 pounds (20 kg)propane capacity.1.2 Cylinder assemblies covered by these requirements are int
10、ended for use, installation and storage inpropane systems such as, but not limited to, applications covered by the following standards:a) Liquefied Petroleum Gas Code, NFPA 58, except as noted in 1.4.b) Outdoor Cooking Gas Appliances, ANSI Z21.58/CSA 1.6.c) Recreational Vehicles, NFPA 1192.d) Safety
11、 Standard for Low Lift and High Lift Trucks, ASME B56.1.1.3 These cylinder assemblies are intended for use in consumer, commercial, and industrial applicationsto provide fuel for portable, stationary, or engine fuel equipment for such purposes as, but not limited to,camping, cooking, heating, lighti
12、ng, soldering, brazing, industrial truck, or cleaning machine service, etc.They may be filled at a location other than the point of use and be connected to utilization equipment bythe user.1.4 These requirements do not cover ASME type container assemblies covered under the Standard forContainer Asse
13、mblies for LP-Gas, UL 644, ASME containers for industrial truck LP-Gas fuel service andcontainers permanently mounted on vehicles.1.5 Seamless Composite Cylinders with a CGA 793 outlet connection are intended only to be foremergency temporary indoor heating in attended use.APRIL 29, 2016UL 20034UL C
14、OPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL2 General2.1 Components2.1.1 Depending on the type of application, a LP-Gas Cylinder Assembly may be provided with severaltypes of valve, fitting or adapter components such as, but not limited to, a
15、shutoff valve, a double backflowcheck filler valve, a fixed maximum liquid level gauge, a variable liquid-level gauge, an overfillingprevention device or a high pressure gauge. When used, these components shall be provided as separateappurtenances or shall be combined into one or more appurtenances
16、incorporating several components.2.1.2 Except as indicated in 2.1.3, a component of product covered by this outline shall comply with therequirements for that component.2.1.3 A component is not required to comply with a specific requirement that:a) Involves a feature or characteristic not needed in
17、the application of the component in theproduct covered by this outline orb) Is superseded by a requirement in this outline.2.1.4 A component shall be used in accordance with its rating established for the intended conditions ofuse.2.1.5 Specific components are incomplete in construction features or
18、restricted in performancecapabilities. Such components are intended for use only under limited conditions, such as certaintemperatures not exceeding specified limits, and shall be used only under those specific conditions.2.2 Units of measurement2.2.1 Values stated without parentheses are the requir
19、ement. Values in parentheses are explanatory orapproximate information.2.3 Undated references2.3.1 Any undated reference to a code or standard appearing in the requirements of this standard shallbe interpreted as referring to the latest edition of that code or standard.APRIL 29, 2016 UL 2003 5UL COP
20、YRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL3 Glossary3.1 For the purpose of this outline, the following definitions apply.3.2 ADAPTER A fitting or coupling for direct connection to a cylinder or service shutoff valve that isused to convert one
21、type of connection to another.3.3 APPURTENANCE A device such as a pressure relief device, valve, fitting, gauge, or plug, that isdirectly installed into a cylinder opening to make the cylinder a leak-tight assembly.3.4 CYLINDER A container that complies with the specification for cylinders construct
22、ed underSubpart C of Part 178 of the Federal DOT Regulations, 3.7 or built under a DOT exemption or specialpermit.3.5 CYLINDER SEAMLESS COMPOSITE A cylinder with fully wrapped reinforced non-metallicmaterial.3.6 CYLINDER VALVE A manual shutoff valve that is used for both filling and withdrawalapplic
23、ations that contains an integral pressure relief device, and may contain a fixed maximum liquidlevel gauge, and an overfilling prevention device.3.7 DEPARTMENT OF TRANSPORTATION (DOT) REGULATIONS The U.S. Department ofTransportation (DOT) Regulations for the Transportation of Hazardous Materials, un
24、der Code of FederalRegulations (CFR) Title 49, Parts 100 199.3.8 EMERGENCY USE* The following conditions apply:a) The permanent heating system is temporarily out of service;b) Heat is necessary to prevent damage to the buildings or contents;c) The cylinders and heaters comply with, and are used and
25、transported in accordance withNFPA 58, 6.20.2 through 6.20.4;d) The temporary heating equipment is not left unattended; ande) Air for combustion and ventilation is provided in accordance with NFPA 54, National FuelGas Code.*Reproduced with permission from NFPA 58-2014, LP-Gas Code Handbook, Copyrigh
26、t 2013, NationalFire Protection Association. This reprinted material is not the complete and official position of the NFPAon the referenced subject, which is represented only by the standard in its entirety.3.9 INTERNAL EXCESS-FLOW VALVE An excess-flow valve constructed and installed so thatdamage t
27、o valve parts exterior to the container does not prevent closing of the valve.3.10 LIQUEFIED PETROLEUM GAS (LP-GAS or LPG) Any material having a vapor pressure notexceeding that allowed for commercial propane composed predominantly of the following hydrocarbons,either by themselves (excluding propyl
28、ene) or as mixtures: propane, propylene, butane (normal butaneor iso-butane) and butylenes.APRIL 29, 2016UL 20036UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL3.11 MOUNTING TYPE A designation to show how a LP-Gas Cylinder Assembly for indust
29、rial truckservice can be mounted on the vehicle. “Horizontal Only” type is one that is mounted with the cylinderslongitudinal axis in the horizontal position. “Vertical Only” type is one with the cylinders longitudinal axisin the vertical position. “Universal Type” is one in which the Cylinder Assem
30、bly can be mounted in eitherthe horizontal or vertical positions.3.12 PRESSURE-RELIEF DEVICE A pressure, temperature or temperature and pressure activateddevice used to prevent the pressure in a cylinder from rising above a predetermined maximum value.The term pressure relief device is synonymous wi
31、th safety relief device as used by DOTRegulations, 3.7.3.13 QUICK CLOSING COUPLING A device that consists of two parts (male and female), whichprovides for a means of connecting and disconnecting an LP-Gas Cylinder Assembly from the fuel linewithout the use of tools. The two parts are threaded toget
32、her. The coupling incorporates 1-1/4 inchACME threads and each part contains a check valve that closes when the two parts are separated.3.14 SERVICE VALVE A manual shutoff valve that is used to control the flow of LP-Gas to and froma cylinder. It can be used for vapor or liquid withdrawal service an
33、d does not contain a relief device,fixed maximum liquid level gauge, or an overfilling prevention device.4 Pressure and Temperature Rating4.1 The pressure rating of a steel or aluminum LP-Gas Cylinder Assembly shall not be less than 240 psig(1.65 MPa). The pressure rating of a composite LP-Gas Cylin
34、der Assembly shall not be less than 290 psig(2.0 MPa).4.2 LP-Gas Cylinder Assemblies covered by these requirements are intended for use at ambient airtemperatures within the range of minus 40 to plus 130F (minus 40 to plus 55C).CONSTRUCTION5 Pressure and Temperature Rating5.1 A LP-Gas Cylinder Assem
35、bly shall be constructed using steel, aluminum or composite materials. Asteel or aluminum LP-Gas Cylinder Assembly shall incorporate a cylinder constructed in accordance withthe specifications DOT-4B, DOT-4BA, DOT-4BW, or DOT-4E of the DOT Regulations, 3.7, as appropriate,with a minimum service pres
36、sure in accordance with 4.1, having a water capacity greater than 2.2 pounds(1 kg), equivalent to nominal 1-pound (0.5-kg) LP-Gas but not greater than 1000 pound (454.5 kg) watercapacity, which is equivalent to 420 pound (191 kg) propane capacity. A LP-Gas Seamless CompositeCylinder Assembly shall i
37、ncorporate a cylinder, constructed under a valid DOT exemption or specialpermit, appropriate for the service, with a minimum service pressure in accordance with 4.1, shall be somarked, and shall not exceed 105 lbs (48 kg) water capacity, which is equivalent to 45 lb (20 kg) propanecapacity.5.2 A LP-
38、Gas Cylinder Assembly shall include all of the components necessary for its intended functionand installation, and shall be furnished as a single unit or assembly.Exception: Quick-connect couplings for use on industrial truck service cylinders can be provided by theuser as outlined in 6.7.APRIL 29,
39、2016 UL 2003 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL5.3 A LP-Gas Cylinder Assembly can be constructed in a manner that provides for vapor withdrawal only,liquid withdrawal only, or vapor and liquid withdrawal service. See Section 6 f
40、or the type of valve(s) thatshall be provided in each case. When a LP-Gas Cylinder Assembly provides for both vapor and liquidwithdrawal service, markings shall be provided to indicate the fluid type for each connection. See 24.4.5.4 A LP-Gas Cylinder Assembly shall be provided with a ventilated cap
41、 or collar that encircles theappurtenances for a minimum of 240 degrees (4.2 radians) of the circumference. Ventilated caps orcollars of steel and aluminum cylinders shall be capable of withstanding a blow of 120 foot-pounds (163Nm) on the largest unreinforced area and thinnest wall section (not at
42、an opening) of the collar. Theconstruction shall be such that the force of the blow will not be transmitted to the valve(s), gaugingdevices, connections, or other appurtenances. See the Impact Test, Section 11. Collars of SeamlessComposite Cylinders shall be capable of withstanding the Drop Test, Se
43、ction 12, without damaging any ofthe appurtenances or creating a leak.5.5 A LP-Gas Cylinder Assembly shall incorporate a foot ring or other means that will allow a cylinder tostand upright in a stable manner without allowing the cylinder bottom to contact the ground.5.6 Steel cylinder shells, foot r
44、ings and collars of the assembly shall be provided with an exterior coatingsuch as paint.5.7 All NPT pipe threaded container appurtenances shall be installed using a pipe-joint sealant such asa sealing compound or Polytetrafluoroethylene (PTFE) tape for use with LP-Gas.Exception: A pipe joint sealan
45、t is not required when the LP-Gas Cylinder Assembly incorporatesdry-seal threads and complies with the requirements in the External Leakage Test, Section 14, with allappurtenances installed as intended in service without any such sealant.5.8 A LP-Gas Cylinder Assembly shall incorporate one or more p
46、ressure relief devices that comply withthe Standard for Pressure Relief Device Standards Part 1 - Cylinders for Compressed Gases, CGA S-1.1for the pressure rating of the cylinder into which it is installed. Relief Valves for LP-Gas SeamlessComposite Cylinder Assemblies shall be flow tested at the te
47、st pressure of the Seamless CompositeCylinder in accordance with the DOT special permit. The flow capacity shall have the capacity requiredfor the size of the Seamless Composite Cylinder at this test pressure. For installation of relief devices, seeRelief Device Installations, Section 7.Exception: L
48、P-Gas Seamless Composite Cylinder Assemblies shall not be equipped with fusible plugs.5.9 Collars shall be constructed so that they do not interfere with the free operation of the cylinder orservice shutoff valve and the relief valve. All valve(s), gauging devices, or other appurtenances shall notex
49、tend beyond the protective collar when the cylinder is not connected for use.5.10 A LP-Gas Cylinder Assembly for industrial truck service shall be constructed to engage a substantialpositioning pin or an equivalent means to provide for intended positioning of the container when reinstalledon the industrial truck.5.11 A LP-Gas Cylinder Assembly for industrial truck service shall be constructed for one of the followingLP-Gas capacities; 20 lb (9.1 kg), 31 lb (14 kg), 33-1/2 lb (15.2 kg), or 43-1/2 lb (19.8 kg).APRIL 29, 2016UL 20038UL COPYRIG
