1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1254 Pre-Engineered Dry Chemical Extinguishing System Units STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL CO
2、PYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Pre-Engineered Dry Chemical Extinguishing System Units, UL 1254 Fourth Edition, Dated February 21, 2013 Summary of Topics This revision of ANSI/UL 1254 is being issued to
3、update commercial grade heptane specications. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. The revised requirements are substantially in accordance with Proposal(s) on this subject dated July 28, 2017. All righ
4、ts 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, or otherwise without prior permission of UL. UL provides this Standard as is without warranty of any kind, either express
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6、t 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 liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the elec
7、tronic 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 reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Stand
8、ard on the purchasers computer system. SEPTEMBER 7, 2017 UL 1254 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SEPTEMBER 7, 2017 UL 1254 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBU
9、TION WITHOUT PERMISSION FROM UL FEBRUARY 21, 2013 (Title Page Reprinted: September 7, 2017) 1 UL 1254 Standard for Pre-Engineered Dry Chemical Extinguishing System Units First Edition July, 1992 Second Edition June, 1996 Third Edition February, 2005 Fourth Edition February 21, 2013 This ANSI/UL Stan
10、dard for Safety consists of the Fourth edition including revisions through September 7, 2017. The most recent designation of ANSI/UL 1254 as an American National Standard (ANSI) occurred on September 7, 2017. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, and Title
11、Page. Comments or proposals for revisions on any part 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 https:/. ULs Standards for Safety are copyrighted by UL. Neither a printe
12、d nor electronic copy of a Standard should be altered in 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 2017 UNDERWRITERS LABORATORIES INC. ANSI/UL 1254-2017UL COPYRIGHTED MATERIAL NOT A
13、UTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL NOVEMBER 23, 2016 PRE-ENGINEERED DRY CHEMICAL EXTINGUISHING SYSTEM UNITS - UL 1254 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS I
14、NTRODUCTION 1 Scope .6 2 Components 7 3 Units of Measurement .7 4 Undated References 7 5 Glossary .7 CONSTRUCTION 6 General .10 7 Electrically Operated Alarms 11 8 Controls and Indicators .11 9 Caps, Valves, and Closures .11 10 Pressure Vessels and Cylinders 12 11 Gaskets and O-Rings .16 12 Gas Cart
15、ridges .16 13 Pressure Regulators 16 14 Pressure Gauges .16 15 Puncturing Mechanisms .17 16 Siphon Tubes 18 17 Dry Chemical Agents 18 18 Expellant Gases 18 19 Polymeric Materials and Nonmetallic Parts .18 20 Anti-Recoil Devices .19 21 Flexible Hose Assemblies Used for Distribution of Agent 19 22 Ele
16、ctrically Operated Devices 20 23 Pressure Switches 20 24 Nozzles 20 PERFORMANCE 25 General 21 26 Fire Test Total Flooding Protection System 21 26.1 General .21 26.2 Class A re tests .22 26.3 Class B re tests .23 26.4 Automatic extinguisher units .25 27 Fire Test Class B Local Application Protection
17、System 25 28 Fire Test Automobile Service Station Fueling Area Protection System .26 29 Fire Test Open-Face Paint Spray Booth Protection System 28 29.1 General 28 29.2 Test apparatus .29 29.3 General test method 30 29.4 Class A re tests .31 29.5 Class B re tests .31 30 Fire Test Vehicle Paint Spray
18、Booth Protection System 32 30.1 General 32 30.2 Test apparatus .33 30.3 General test method 34 NOVEMBER 23, 2016 PRE-ENGINEERED DRY CHEMICAL EXTINGUISHING SYSTEM UNITS - UL 1254 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 30.4 Class A r
19、e tests 34 30.5 Class B re tests 35 31 Fire Test and Appliance Splash Test Commercial Cooking Equipment Protection System .35 32 Flow Distribution Tests .35 33 Hydrostatic Pressure Test 36 33.1 Pressure vessels and gas cartridges .36 33.2 Other devices subject to pressure 38 33.3 Test method 38 34 3
20、0-Day Elevated Temperature Test .38 35 Temperature Cycling Test 39 36 Salt Spray Corrosion Test 39 37 500 Cycle Operation Test 40 38 One-Year Time Leakage Test .40 39 Mounting Device Test 41 40 Flexible Hose Assembly Low Temperature Test .41 41 Flexible Hose Assembly Cycling Test 41 42 Flexible Hose
21、 Assembly Fire Exposure Test 42 43 Operation Test of Manual Actuators and Manual Pull Stations 42 44 Pneumatic Operation Test 43 45 Pressure Relief Tests 43 46 Vibration and Shock Resistance Test 44 46.1 General .44 46.2 Vibration test .44 46.3 Shock resistance test 45 47 Elastomeric Parts Test .45
22、48 10-Day Moist Ammonia Air Stress Cracking Test 46 49 Aging Tests Plastic Materials 47 49.1 Air-oven aging test .47 49.2 Exposure to extinguishing agent test 48 49.3 Light and water test .48 50 Extinguishing Agent Tests .49 50.1 General .49 50.2 Elevated temperature test 50 50.3 Hygroscopicity test
23、 50 50.4 Dielectric strength test .50 51 Calibration Test Gauges and Indicators 51 52 Burst Strength Test Gauges and Indicators .51 53 Overpressure Test Gauges .51 54 Impulse Test Gauges 52 55 Pressure Gauge Relief Test 52 56 Water Resistance Test Gauges and Indicators 52 57 Nameplate Exposure Tests
24、 .52 58 Nameplate Adhesion Test 53 59 Nameplate Abrasion Test .53 MANUFACTURING AND PRODUCTION TESTS 60 General 54 60.1 Manufacturers Tests .54 60.2 Hydrostatic pressure test shells 54 60.3 Non-DOT gas cartridges .54 60.4 Gauge calibration test .55 60.5 Leakage test 55 FEBRUARY 21, 2013 PRE-ENGINEER
25、ED DRY CHEMICAL EXTINGUISHING SYSTEM UNITS - UL 1254 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL PACKING FOR SHIPMENT 61 General 55 MARKINGS 62 General 56 INSTALLATION INSTRUCTIONS 63 Installation, Operation, and Maintenance Instruction
26、 Manual .58 64 Owners Manual .59 APPENDIX A Standards for ComponentsA1 FEBRUARY 21, 2013 PRE-ENGINEERED DRY CHEMICAL EXTINGUISHING SYSTEM UNITS - UL 1254 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These require
27、ments cover the construction and operation of xed pre-engineered dry chemical re extinguishing system units and xed automatic extinguisher units intended to be used in accordance with the Standard for Dry Chemical Extinguishing Systems, NFPA 17. 1.2 Automatic extinguisher units do not have a manual
28、means of operation and are intended to be used in accordance with the manufacturers installation instructions. Automatic extinguisher units are not intended for use as a substitute for pre-engineered dry chemical extinguishing system units, or for protection of re risks larger than those specied in
29、the manufacturers instructions for a single unit by using multiple units. 1.3 Pre-engineered dry chemical extinguishing system units covered by these requirements are intended to be used in the following re protection systems: a) Industrial Total Flooding Protection System A system arranged to disch
30、arge dry chemical throughout the intended protected volume. See Fire Test Total Flooding Protection System, Section 26. b) Class B Local Application Protection System A system arranged to discharge dry chemical directly onto a specic area of protection. This application of chemical is normally used
31、where no xed enclosure exists or an extinguishing system is unable to totally ood the xed enclosure to achieve extinguishment. See Fire Test Class B Local Application Protection System, Section 27. c) Commercial Cooking Equipment Protection System A system arranged to discharge dry chemical onto coo
32、king surfaces of cooking appliances and into hood and duct systems used for ventilation of commercial cooking appliances. See the Standard for Fire Testing of Fire Extinguishing Systems for Protection of Commercial Cooking Equipment, UL 300. d) Automobile Service Station Fueling Area Protection Syst
33、em A system arranged to discharge dry chemical directly onto small spill res that originate and are maintained within the protected area. See Fire Test Automobile Service Station Fueling Area Protection System, Section 28. e) Open-Face Paint Spray Booth Protection System A system arranged to dischar
34、ge dry chemical into paint spray working areas and into the plenum and duct systems used for ventilation of paint spraying operations. See Fire Test Open-Face Point Spray Booth Protection System, Section 29. f) Vehicle Paint Spray Booth A system arranged to discharge dry chemical into paint spray wo
35、rking areas and onto the plenum and duct systems used for ventilation of paint spraying operations. See Fire Test Vehicle Paint Spray Booth Protection System, Section 30. g) Off-the-Road Vehicle Protection System A system arranged to discharge dry chemical onto re risk areas and into volumes of vehi
36、cles such as aboveground mobile mining equipment, and mobile earthmoving equipment. See Fire Test Total Flooding Protection System, Section 26, and/or Fire Test Class B Local Application Protection System, Section 27, as applicable. AUGUST 2, 2016 PRE-ENGINEERED DRY CHEMICAL EXTINGUISHING SYSTEM UNI
37、TS - UL 1254 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2 Components 2.1 Except as indicated in 2.2, a component of a product covered by this standard shall comply with the requirements for that component. See Appendix A for a list of
38、standards covering components generally used in the products covered by this standard. 2.2 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 covered by this standard, or b) Is
39、superseded by a requirement in this standard. 2.3 A component shall be used in accordance with its rating established for the intended conditions of use. 2.4 Specic components are incomplete in construction features or restricted in performance capabilities. Such components are intended for use only
40、 under limited conditions, such as certain temperatures not exceeding specied limits, and shall be used only under those specic conditions. 3 Units of Measurement 3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 3.2 Where th
41、ese requirements reference extinguishing system unit or units, the requirements also apply to automatic extinguisher units unless specically noted otherwise. 4 Undated References 4.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as re
42、ferring to the latest edition of that code or standard. 5 Glossary 5.1 For the purpose of these requirements, the following denitions apply. 5.2 AUTOMATIC EXTINGUISHER UNIT A unit that has no manual means of actuation and discharges extinguishing agent upon thermal actuation is intended for use in a
43、 normally unoccupied space and is limited to a single protected area. 5.3 AUTOMOBILE SERVICE STATION FUELING AREA PROTECTION DEFINITIONS: a) ISLAND A raised portion of the service station protection area where the fuel dispensing devices are located. b) PARKING AREA The area immediately adjacent to
44、the island where automobiles are parked for purposes of fueling. c) GROUNDSWEEP PROTECTION Protection that is achieved by nozzles that are installed near the ground and discharge dry chemical parallel to the protected surface. FEBRUARY 21, 2013 PRE-ENGINEERED DRY CHEMICAL EXTINGUISHING SYSTEM UNITS
45、- UL 1254 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 5.4 CYLINDER/VALVE ASSEMBLY A container that incorporates a valve and that provides storage of the extinguishing agent and expellant gas until the valve is actuated. For cartridge op
46、erated units, this assembly includes the dry chemical storage container and cartridge mechanism. When actuated, the valve releases the agent into the distribution network of the extinguishing system. 5.5 DISCHARGE RATE The ratio of the quantity of agent discharged from a nozzle to the discharge time
47、 measured within 1 second. When a minimum discharge rate is indicated, reference is made to the minimum quantity of agent discharged and the time measured within 1 second. 5.6 DISCHARGE NOZZLE A device that is used to uniformly distribute the extinguishing agent over or into a specic area, or within
48、 a specic volume, or both. 5.7 DISCHARGE TIME The time interval between the rst appearance of extinguishing agent at the nozzle and the time at which the discharge becomes predominantly gaseous. 5.8 EXPELLANT GAS Dry nitrogen, dry air, or other gas used to facilitate the discharge of the extinguishi
49、ng agent. 5.9 EXTINGUISHING SYSTEM UNIT Identied components that are to be assembled into a system for the discharge of an extinguishing agent through xed piping and/or hose, and nozzles for the purpose of extinguishing res. 5.10 GAS CARTRIDGE A container that provides storage for an expellant gas. 5.11 HEPTANE Commercial grade heptane having the following characteristics: a) A minimum initial Boiling Point of 88C (190F);
