1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 147 Hand-Held Torches For Fuel GasesUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTH
2、ER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Hand-Held Torches For Fuel Gases, UL 147 Seventh Edition, Dated March 5, 2015 SUMMARY OF TOPICS This new edition of ANSI/UL 147 includes editorial revisions and revisions to the Moist Ammonia-air Stress Cracking Te
3、st. The revised requirements are substantially in accordance with Proposal(s) on this subject dated January 16, 2015. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, record
4、ing, or otherwise without prior permission of UL. UL provides this Standard as is without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or tness for any purpose. In no event will UL be liable for any special, incidental, co
5、nsequential, indirect or similar damages, including loss of prots, lost savings, loss of data, or any other damages arising out of the use of or the inability to use this Standard, even if UL or an authorized UL representative has been advised of the possibility of such damage. In no event shall ULs
6、 liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (includ
7、ing reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, gures, and/or other elements of the
8、 Standard having future effective dates as indicated in the note following the affected item. The prior text for requirements that have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. MARCH 5, 2015 UL 147 tr1UL
9、COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARCH 5, 2015 UL 147 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARCH 5, 2015 1 UL 147 Standard for Hand-Hel
10、d Torches for Fuel Gases The rst and second editions were titled LP-Gas Torches. The third edition was titled LP- and MPS-Gas Torches. First Edition November, 1970 Second Edition August, 1973 Third Edition July, 1984 Fourth Edition October, 1992 Fifth Edition September, 1996 Sixth Edition February,
11、2005 Seventh Edition March 5, 2015 This ANSI/UL Standard for Safety consists of the Seventh edition. The most recent designation of ANSI/UL 147 as an American National Standard (ANSI) occurred on March 5, 2015. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Pa
12、ge, or effective date information. The Department of Defense (DoD) has adopted UL 147 on September 26, 1988. The publication of revised pages or a new edition of this Standard will not invalidate the DoD adoption. Comments or proposals for revisions on any part of the Standard may be submitted to UL
13、 at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and al
14、l copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2015 UNDERWRITERS LABORATORIES INC. ANSI/UL 147-2015UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARCH 5, 2015 HA
15、ND-HELD TORCHES FOR FUEL GASES - UL 147 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .4 2 General 4 2.1 Components .4 2.2 Units of measurement .5 2.3 Undated references .5 3 Operating In
16、structions .5 4 Service Pressure Ratings 5 CONSTRUCTION 5 Assembly 5 6 Connections 7 7 Materials .7 PERFORMANCE 8 General 8 9 Filling Procedure Test 10 10 Pressure Test 10 11 Leakage Test 10 12 Drop Test 10 13 Operation Test .11 14 Flame Flare-Up Test 11 15 Valve-Endurance Test .11 16 Temperature Te
17、st .11 17 Fire Tests on Torch Units with Integral Containers 12 18 Hydrostatic Pressure Strength Test .13 19 Sustained Pressure Test .13 20 Moist Ammonia-Air Stress Cracking Test 14 21 Accelerated Aging Test 15 22 Fuel Gas Compatibility 15 22.1 General .15 22.2 Volume change 15 22.3 Weight loss 16 M
18、ANUFACTURING AND PRODUCTION TESTS 23 General 16 MARKING 24 General 16 INSTRUCTIONS 25 General 17 26 Important Safeguards .18 MARCH 5, 2015 HAND-HELD TORCHES FOR FUEL GASES - UL 147 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTIO
19、N 1 Scope 1.1 These requirements cover hand-held torches of the air aspirating type for operations such as heating, soldering, and brazing. 1.2 Torches covered by these requirements are intended to operate on commercial grade fuel gases other than acetylene as dened in the Standard for Design and In
20、stallation of Oxygen-Fuel Gas Systems for Welding, Cutting, and Allied Processes, NFPA 51. 1.3 Torches covered by these requirements are intended for direct connection to disposable containers covered in the Standard for Nonrellable (Disposable) Type Fuel Gas Cylinder Assemblies, UL 147A, Standard f
21、or Nonrellable (Disposable) Type Metal Container Assemblies for Butane, UL 147B, or similar type disposable containers, or as covered by 1.4. 1.4 Torches covered by these requirements may incorporate integral container assemblies which may be rellable. 1.5 LP-Gas torches are intended for use in acco
22、rdance with the Liqueed Petroleum Gas Code, NFPA 58. 1.6 Torches covered by these requirements shall be permitted to incorporate a hose assembly and shall be permitted to be used with rellable containers greater than 2.71 pound (1.23 kg) water capacity. 2 General 2.1 Components 2.1.1 Except as indic
23、ated in 2.1.2, a component of a product covered by this standard shall comply with the requirements for that component. 2.1.2 A component is not required to comply with a specic requirement that: a) Involves a feature or characteristic not required in the application of the component in the product
24、covered by this standard, or b) Is superseded by a requirement in this standard. 2.1.3 A component shall be used in accordance with its rating established for the intended conditions of use. 2.1.4 Specic components are incomplete in construction features or restricted in performance capabilities. Su
25、ch components are intended for use only under limited conditions, such as certain temperatures not exceeding specied limits, and shall be used only under those specic conditions. MARCH 5, 2015 HAND-HELD TORCHES FOR FUEL GASES - UL 147 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION
26、OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2.2 Units of measurement 2.2.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 2.3 Undated references 2.3.1 Any undated reference to a code or standard appearing in the requirements of
27、 this standard shall be interpreted as referring to the latest edition of that code or standard. 3 Operating Instructions 3.1 Operating instructions shall be provided with each torch assembly and shall accompany the samples that are submitted for investigation. These instructions are to be used as a
28、 guide in the examination and test of the product. For this purpose, a nal printed edition is not required. 3.2 The instructions shall include such directions and information as deemed by the manufacturer to be necessary for the intended installation, maintenance, and the use of the product. 3.3 Ins
29、tructions for torches incorporating rellable integral containers shall include lling procedures. 4 Service Pressure Ratings 4.1 The service pressure rating of a torch unit intended for use with propane or Methylacetylene- Propediene, Stabilized-Gas (MPS-Gas) shall not be less than 250 psig (1.7 MPa)
30、. 4.2 The service pressure rating of a torch unit intended for use with propylene shall not be less than 325 psig (2.2 MPa). 4.3 The service pressure rating of a torch unit intended for butane, butane-propane mixtures, or other fuel gases, not covered by 4.1 and 4.2, shall not be less than the vapor
31、 pressure of the fuel gas at 130F (54.4C). CONSTRUCTION 5 Assembly 5.1 A torch unit consists of a valve body assembly burner tube, orice(s), and burner head(s). A torch unit may also incorporate an integral container assembly that may be rellable. 5.2 The integral container assembly for a torch unit
32、 shall have a maximum size limitation of 4.0 uid ounces (118.3 ml). 5.3 A torch unit that incorporates a cap intended to be placed over the burner head, shall be constructed so that the shutoff valve control is not likely to be unintentionally moved to the on position with the cap in place. MARCH 5,
33、 2015 HAND-HELD TORCHES FOR FUEL GASES - UL 147 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 5.4 If specic ttings or parts are required for making the intended assembly, such parts shall be furnished by the manufacturer with each torch u
34、nit. 5.5 A torch unit shall be provided with means for ow regulation and positive fuel shutoff. If a valve stem is employed, the stem shall be constructed so that it cannot be completely withdrawn from the body by reverse rotation. Threads of a valve stem shall not enter a stuffing box recess, or ot
35、herwise interfere with the stem seal area of the body. 5.6 If an integral container assembly is rellable, in accordance with 5.1, the container assembly shall be provided with a shutoff valve arrangement that closes automatically when the torch unit is separated from the relling fuel container durin
36、g the lling process. 5.7 A brazing material used for joining liquid-conning parts of a torch shall have a melting point (solidus temperature) not less than 1000F (538C). 5.8 A torch unit with integral fuel container shall be equipped with pressure relief device(s) or system(s), or be constructed so
37、that the torch will not rupture or be violently propelled when exposed to a re condition. See the Fire Test on Torch Units with Integral Containers, Section 17. 5.9 Torches that incorporate a hose assembly shall have the following components and they shall be evaluated to the appropriate UL standard
38、: a) LP-gas hose assembly Standard for LP-Gas Hose, UL 21 or the Standard for Pigtails and Flexible Hose Connectors for LP-Gas, UL 569; b) Compressed gas regulator or LP-Gas regulator Standard for Compressed Gas Regulators, UL 252 or Standard for Pressure Regulating Valves for LP-Gas, UL 144; c) Reg
39、ulator accessories (if provided) Standard for Compressed Gas Regulator Accessories, UL 252A; and d) Excess Flow Valve Standard for Valves for Anhydrous Ammonia and LP-Gas (Other Than Safety Relief), UL 125. Exception: If the manufacturer does not provide any of the above components the safety instru
40、ctions shall state that the torches are for use only with UL Listed regulator, compressed gas regulator (for use with LP-Gas), and/or excess ow check valve as applicable. 5.9 revised March 5, 2015 MARCH 5, 2015 HAND-HELD TORCHES FOR FUEL GASES - UL 147 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FUR
41、THER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 6 Connections 6.1 The inlet of the torch unit other than a torch unit with integral container assembly shall comply with the requirements for a CGA No. 600 connection in accordance with the Compressed Gas Association Standard for Compresse
42、d Gas Cylinder Valve Outlet and Inlet Connections, ANSI/CGA V-1. Exception: A torch unit that incorporates another type of inlet connection need not comply with this requirement if the torch unit is marked in accordance with 24.2 and the operating instructions include directions for leak free connec
43、tion to the specic type and model designation of fuel container. 6.2 The hose connection for LP-Gas hose shall be provided with a CGA 510, CGA 791, or CGA 810 (Type I or Type II) outlet connection complying with the Standard for Compressed Gas Cylinder Valve Outlet and Inlet Connections, ANSI/CGA V-
44、1. 7 Materials 7.1 Materials shall be resistant to the action of the liquid to which they will be exposed in service. 7.2 With reference to the requirement in 7.1, elastomeric and polymeric materials shall be subjected to the Accelerated Aging Test, Section 21 and the Fuel Gas Compatibility Test, Se
45、ction 22. Exception: Chlorotriuoroethylene polymers, tetrauoroethylene, uorinated ethylene propylene polymers and polyamides of composition polyhexamethylene adipamide or polycaproamide polymers (nylon 6 or 6/6) are acceptable without test. 7.3 If atmospheric corrosion of a ferrous part will impair
46、the intended operation of a torch, the part shall be provided with a corrosion-resistant protective coating. 7.4 A protective coating shall resist corrosion to the degree not less than that provided by the protective coatings specied in 7.5. 7.5 Cadmium plating shall have a thickness of not less tha
47、n 0.0003 inch (0.008 mm), and zinc plating shall have a thickness of not less than 0.0005 inch (0.013 mm). Exception: If threads constitute the major portion of the area of a part, the thickness of the cadmium or zinc plating may be not less than 0.00015 inch (0.0038 mm). 7.6 A fuel-conning part of
48、a burner that is made of drawn brass or machined from brass rod made of copper alloy containing more than 15 percent zinc and incorporating internal threads shall withstand without cracking, the Moist Ammonia-Air Stress Cracking Test, Section 20. 7.6 revised March 5, 2015 7.7 Parts made of metals ha
49、ving widely varying coefficients of thermal expansion and exposed to heat shall not be used in combination if threaded together with the intent to reduce the likelihood of external leakage of fuel. MARCH 5, 2015 HAND-HELD TORCHES FOR FUEL GASES - UL 147 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 7.8 Copper or brass tubing and ttings containing more than 67-percent copper shall not be used for parts in contact with MP
