1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 123 Oxy-Fuel Gas TorchesUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCT
2、ION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Oxy-Fuel Gas Torches, UL 123 Eleventh Edition, Dated June 15, 2007 Summary of Topics This revision of ANSI/UL 123 is being issued to add denitions to the Glossary section. Text that has been changed in any manner or impacted b
3、y ULs electronic publishing system is marked with a vertical line in the margin. Changes in requirements are marked with a vertical line in the margin and are followed by an effective date note indicating the date of publication or the date on which the changed requirement becomes effective. The new
4、 and revised requirements are substantially in accordance with Proposal(s) on this subject dated August 8, 2014. 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, recording,
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7、ility 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 (including r
8、easonable 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 Stan
9、dard 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that have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. SEPTEMBER 30, 2014 UL 123 tr1UL
10、COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SEPTEMBER 30, 2014 UL 123 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JUNE 15, 2007 (Title Page Reprinted: Se
11、ptember 30, 2014) 1 UL 123 Standard for Oxy-Fuel Gas Torches The rst edition was titled Standard for Blowpipes or Torches for Welding, Cutting, Heating, Lead Burning, and Soldering, UL 252. The second edition was titled Standard for Torches for Welding, Cutting, Heating, Lead Burning, and Soldering,
12、 UL 252(A). First Edition March, 1928 Second Edition May, 1951 Third Edition August, 1960 Fourth Edition May, 1973 Fifth Edition February, 1975 Sixth Edition January, 1982 Seventh Edition October, 1986 Eighth Edition December, 1992 Ninth Edition December, 1995 Tenth Edition October, 1999 Eleventh Ed
13、ition June 15, 2007 This ANSI/UL Standard for Safety consists of the Eleventh Edition including revisions through September 30, 2014. The most recent designation of ANSI/UL 123 as an American National Standard (ANSI) occurred on September 30, 2014. ANSI approval for a standard does not include the C
14、over Page, Transmittal Pages, Title Page, or effective date information. The Department of Defense (DoD) has adopted UL 123 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
15、of the Standard may be submitted to UL 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 i
16、n any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2014 UNDERWRITERS LABORATORIES INC. ANSI/UL 123-2014UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHO
17、UT PERMISSION FROM UL SEPTEMBER 30, 2014 OXY-FUEL GAS TORCHES - UL 123 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 .4A 2.3 Unda
18、ted references .4A 2A Glossary 4A CONSTRUCTION 3 Materials .4A 4 Hose Connections .4B 5 Venting of Handles 4B 6 Valve Stems 4B PERFORMANCE 7 Normal Operation Test .4B 8 Abnormal Operation Test .4B 9 Leakage Test .6A 10 Valve-Endurance Test .6A 11 Temperature Test 6B 12 Volume-Change and Weight-Loss
19、Tests 8 12.1 General 8 12.2 Volume change .8 12.3 Weight loss .9 13 Accelerated Aging Test .9 MANUFACTURING AND PRODUCTION TESTS 14 General .9 RATINGS 15 Service Pressure Ratings .9 MARKING 16 General .9 INSTRUCTIONS 17 General 10 18 Important Safeguards .10 19 Operating Instructions .11 SEPTEMBER 3
20、0, 2014 OXY-FUEL GAS TORCHES - UL 123 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover oxy-fuel gas torches used in operations such as welding, cutting, heating, scarng, powder cutting, or ot
21、her allied processes. 1.2 These requirements do not apply to metal-spraying torches. 1.2 revised December 20, 2007 1.3 A product that contains features, characteristics, components, materials, or systems new or different from those covered by the requirements in this standard, and that involves a ri
22、sk of re or of electric shock or injury to persons shall be evaluated using appropriate additional component and end-product requirements to maintain the level of safety as originally anticipated by the intent of this standard. A product whose features, characteristics, components, materials, or sys
23、tems conict with specic requirements or provisions of this standard does not comply with this standard. Revision of requirements shall be proposed and adopted in conformance with the methods employed for development, revision, and implementation of this standard. 2 General 2.1 Components 2.1.1 Excep
24、t as indicated 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 th
25、e product 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 capabi
26、lities. Such 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. DECEMBER 20, 2007 OXY-FUEL GAS TORCHES - UL 123 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTIO
27、N 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
28、of this standard shall be interpreted as referring to the latest edition of that code or standard. 2A Glossary 2A.1 For the purpose of this standard the following denitions apply. 2A.1 added September 30, 2014 2A.2 BACKFIRE a The momentary recession of the ame into the torch, potentially causing a a
29、shback or sustained backre. It is usually signaled by a popping sound, after which the ame may either extinguish or reignite at the end of the tip. See also ashback and sustained backre. 2A.2 added September 30, 2014 2A.3 BACKFIRE, SUSTAINED a The recession of the ame into the torch body with contin
30、ued burning characterized by an initial popping sound followed by a squealing or hissing sound, potentially burning through the torch body. See also backre and ashback. 2A.3 added September 30, 2014 2A.4 FLASHBACK a The recession of the ame through the torch and into the hose, regulator, and/or cyli
31、nder, potentially causing an explosion. See also backre and sustained backre. 2A.4 added September 30, 2014 CONSTRUCTION 3 Materials 3.1 Devices of this type shall be constructed of materials that are compatible with the gas or gases with which they are used. Metal parts shall be inherently corrosio
32、n resistant or protected to resist corrosion. 3.2 With reference to 3.1, elastomeric and polymeric materials shall be subjected to the Volume Change and Weight Loss Test, Section 12 and the Accelerated Aging Test, Section 13. Exception: Chlorotriuoroethylene polymers, tetrauoroethylene, uorinated et
33、hylene propylene polymers and polyamides of composition polyhexamethylene adipamide or polycaproamide polymers (nylon 6 or 6/6) are acceptable without test. 3.2 effective June 30, 2010, except for the Exception which is effective April 30, 2010 a Reproduced/adapted with permission of the American We
34、lding Society (AWS), Miami, Florida. SEPTEMBER 30, 2014 OXY-FUEL GAS TORCHES - UL 123 4AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 4 Hose Connections 4.1 Hose connections shall be union connections which do not require gaskets. They sha
35、ll have left-hand threads for the attachment of fuel-gas hose ttings and right-hand threads for oxygen hose ttings and shall comply with the specications of the Compressed Gas Association in the Standard Connections for Regulator Outlets, Torches, and Fitted Hose for Welding and Cutting Equipment, E
36、-1. 4.2 With reference to 4.1, a slip-joint connection is allowed to be used for connecting hose having an internal diameter of 3/16 inch (4.8 mm) or smaller. 5 Venting of Handles 5.1 Nongas-carrying spaces in handles shall be vented. 6 Valve Stems 6.1 The valve stem of a gas control valve shall be
37、so constructed that it cannot be removed without removing the packing nut or stem-retaining means. PERFORMANCE 7 Normal Operation Test 7.1 The torch, equipped with its manufacturers tips or nozzles, shall perform the intended operations as specied in 7.2 and shall not produce ashback when connected
38、to the gas supplies at the required pressure specied by the manufacturer. 7.2 In making this test, the torch is to be connected to a gas supply maintained at the pressures specied by the manufacturer. Tips or nozzles of various capacities are inserted and typical welding, cutting, heating, scarng, p
39、owder cutting, or other allied processes for which the torch is intended are performed. 8 Abnormal Operation Test 8.1 The torch, equipped with its manufacturers tips or nozzles, when subjected to abnormal and abusive conditions (conducive to making the torch backre or produce ashback), such as conta
40、ct of the tip with rebrick or steel shall not produce ashback (sustained burning within the torch) or produce other hazardous effects. No damage to the torch shall result from this test. To determine that the torch complies with this specication, the torch is to be tested as described in 8.4 and 8.5
41、. The fuel-gas supply and oxygen supply shall be provided with quick-closing manual valves or the equivalent that shuts off gas supplies in the event of ashback. 8.2 BACKFIRE The term backre refers to momentary retrogression of the ame into the torch tip with a popping sound as the ame is extinguish
42、ed. Immediately following the withdrawal of the tip from the work, the gases are capable of reigniting or the use of a torch lighter shall be required. 8.3 FLASHBACK The term ashback refers to the sustained retrogression of the ame back into the mixing chamber accompanied by a hissing or squealing s
43、ound and a characteristic smokey, sharp- pointed ame. This condition necessitates the immediate cutting off of the gas supplies, oxygen rst, fuel gas second, to prevent severe overheating and possible destruction of the torch head and/or gas tubes. SEPTEMBER 30, 2014 OXY-FUEL GAS TORCHES - UL 123 4B
44、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 8.4 In this test, the device (torch and tip or nozzle) is to be connected to the gas supply by lengths of hose. The gas pressures are to be set and maintained at the values specied by the manuf
45、acturer. With the fuel-gas valve adjusted as specied by the manufacturer, the oxygen valve is to be adjusted so that a normal, neutral ame is established at the tip end. A neutral ame is indicated by a well-dened white inner cone at the torch tip. The abusive and abnormal conditions described in 8.5
46、 are then to be imposed. During this test, the cutting oxygen valve lever is not operated on a cutting torch. 8.4 revised May 23, 2014 SEPTEMBER 30, 2014 OXY-FUEL GAS TORCHES - UL 123 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SEPTEMBE
47、R 30, 2014 OXY-FUEL GAS TORCHES - UL 123 6 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 8.5 Without touching the torch valves, the fuel-gas pressure is to be increased 10 percent above the specied value, and the oxygen
48、 pressure is to be decreased 10 percent below the specied value. The lighted tip or nozzle is then to be touched on steel or rebrick so as to produce at least 30 backres at a frequency of 30 to 50 backres per minute. If 30 backres cannot be obtained after 100 touches on the steel or rebrick, the tes
49、t is to be discontinued. The gas pressures are then to be inverted and the same procedure is to be repeated. 8.5 revised May 23, 2014 8.6 At the conclusion of the test described in 8.5, the gas torch shall be subjected to and comply with the Normal Operation Test, Section 7, to determine whether there has been any damage to the torch as required in 8.1. 8.6 added May 23, 2014 9 Leakage Test 9.1 A torch unit is to be subjected for one minute to
