1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1254 Pre-Engineered Dry Chemical Extinguishing System UnitsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL N
2、OT 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 include an editorial
3、 correction to scope. Text that has been changed in any manner or impacted by 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 publica
4、tion or the date on which the changed requirement becomes effective. The revised requirements are substantially in accordance with Proposal(s) on this subject dated November 28, 2014. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in
5、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 expressed or implied, including but not limited to, the implied warranties of merchantability or tness for any purp
6、ose. In no event will UL be liable for any special, incidental, consequential, 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 bee
7、n 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 electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and agains
8、t 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 Standard on the purchasers computer system. The requirements in this Standard are now in effect, except for those
9、 paragraphs, sections, tables, gures, and/or other elements of the 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 precede
10、d by a SUPERSEDED REQUIREMENTS notice. JANUARY 30, 2015 UL 1254 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 30, 2015 UL 1254 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTI
11、ON WITHOUT PERMISSION FROM UL FEBRUARY 21, 2013 (Title Page Reprinted: January 30, 2015) 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 Standar
12、d for Safety consists of the Fourth edition including revisions through January 30, 2015. The most recent designation of ANSI/UL 1254 as an American National Standard (ANSI) occurred on January 30, 2015. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or
13、effective date information. 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 http:/. ULs Standards for Safety are copyrighted by
14、 UL. Neither a printed 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 2015 UNDERWRITERS LABORATORIES INC. ANSI/UL 1254-2015UL COPYR
15、IGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL FEBRUARY 21, 2013 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 PERMISSI
16、ON FROM UL CONTENTS INTRODUCTION 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-
17、Rings .16 12 Gas Cartridges .16 13 Pressure Regulators 16 14 Pressure Gauges .16 15 Puncturing Mechanisms .17 16 Siphon Tubes 18 17 Dry Chemical Agents 18 18 Nitrogen and Air Expellant Gases .18 19 Polymeric Materials and Nonmetallic Parts .18 20 Anti-Recoil Devices .19 21 Flexible Hose Assemblies U
18、sed for Distribution of Agent 19 22 Electrically 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 Tes
19、t Class B Local Application Protection 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 tes
20、ts .31 30 Fire Test Vehicle Paint Spray Booth Protection System 32 30.1 General 32 30.2 Test apparatus .33 30.3 General test method 34 FEBRUARY 21, 2013 PRE-ENGINEERED DRY CHEMICAL EXTINGUISHING SYSTEM UNITS - UL 1254 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION W
21、ITHOUT PERMISSION FROM UL 30.4 Class A re 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 subj
22、ect to pressure .38 33.3 Test method .38 34 30-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
23、Hose Assembly Cycling Test .41 42 Flexible Hose 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
24、 resistance test .45 47 Elastomeric Parts Test 45 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 E
25、levated temperature test .50 50.3 Hygroscopicity test .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
26、Gauges and Indicators .52 57 Nameplate Exposure Tests 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
27、60.5 Leakage test .55 FEBRUARY 21, 2013 PRE-ENGINEERED 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
28、Installation, Operation, and Maintenance Instruction 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 PERMIS
29、SION FROM UL INTRODUCTION 1 Scope 1.1 These requirements 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
30、 Automatic extinguisher units do not have a manual 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 p
31、rotection of re risks larger than those specied in 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 Fl
32、ooding Protection System A system arranged to discharge 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 protect
33、ion. This application of chemical is normally used 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
34、 system arranged to discharge dry chemical onto cooking 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) Auto
35、mobile Service Station Fueling Area Protection System 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 B
36、ooth Protection System A system arranged to discharge 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 arr
37、anged to discharge dry chemical into paint spray working 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 c
38、hemical onto re risk areas and into volumes of vehicles 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. 1.3 revised Janu
39、ary 30, 2015 JANUARY 30, 2015 PRE-ENGINEERED DRY CHEMICAL EXTINGUISHING SYSTEM UNITS - 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 sh
40、all comply with the requirements for that component. See Appendix A for a list of 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 t
41、he application of the component in the product covered by this standard, or b) Is 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
42、 restricted in performance capabilities. 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. 3 Units of Measurement 3.1 Values stated without parentheses are the requireme
43、nt. Values in parentheses are explanatory or approximate information. 3.2 Where these 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
44、standard appearing in the requirements of this standard shall be interpreted as referring 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
45、and discharges extinguishing agent upon thermal actuation is intended for use in a 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
46、 dispensing devices are located. b) PARKING AREA The area immediately adjacent to 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
47、surface. FEBRUARY 21, 2013 PRE-ENGINEERED DRY CHEMICAL EXTINGUISHING SYSTEM UNITS - 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 e
48、xtinguishing agent and expellant gas until the valve is actuated. For cartridge operated 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
49、 The ratio of the quantity of agent discharged from a nozzle to the discharge time 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 a specic volume, or both. 5.7 DISCHARGE TIME The t
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