1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 912 Highway Emergency SignalsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPR
2、ODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Highway Emergency Signals, UL 912 Sixth Edition, Dated November 26, 1997 Summary of Topics This revision of UL 912 includes the addition of requirements for ares containing no potassium perchlorate. Text that has been cha
3、nged 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 publication or the date on which the changed requir
4、ement becomes effective. The new and revised are substantially in accordance with Proposal(s) on this subject dated September 20, 2013. 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 ph
5、otocopying, 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 purpose. In no event will UL be liable for any speci
6、al, 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 been advised of the possibility of such damage. In
7、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 against any loss, expense, liability, damage, claim, o
8、r 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 paragraphs, sections, tables, gures, and/or oth
9、er 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 preceded by a SUPERSEDED REQUIREMENTS notice. NOVEMBER
10、5, 2013 UL 912 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL NOVEMBER 5, 2013 UL 912 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL NOVEMBER 26, 1997 (T
11、itle Page Reprinted: November 5, 2013) 1 UL 912 Standard for Highway Emergency Signals First Edition September, 1938 Second Edition September, 1940 Third Edition June, 1973 Fourth Edition July, 1979 Fifth Edition February, 1993 Sixth Edition November 26, 1997 Comments or proposals for revisions on a
12、ny 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 UL. Neither a printed nor electronic copy of a Standard should be a
13、ltered 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 2013 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMIS
14、SION FROM UL JULY 18, 2000 HIGHWAY EMERGENCY SIGNALS - UL 912 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS FOREWORD 4 INTRODUCTION 1 Scope .5 2 General 5 LIQUID-BURNING FLARES CONSTRUCTION 3 General 6 4 Fuel
15、 .6 5 Fuel Containers .6 6 Burner Hoods 6 7 Stability 6 PERFORMANCE 8 Vibration and Shock Test 6 9 Rain Test 6 10 Wind Test .7 11 Photometric Test .7 INSTRUCTIONS AND MARKING 12 Instructions for Use 8 13 Marking .8 ELECTRIC LANTERNS CONSTRUCTION 14 General .8 15 Color .8 PERFORMANCE 16 Test Sequence
16、 8 17 Vibration and Shock Test .8 18 Rain Test .9 19 Dust Test .9 20 Reliability and Life Tests 9 21 Photometric Tests 9 22 Low-Temperature Test 10 MARKING 23 General 10 JULY 18, 2000 HIGHWAY EMERGENCY SIGNALS - UL 912 2AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION
17、 WITHOUT PERMISSION FROM UL FUSEES CONSTRUCTION 24 General 10 25 Heads and Caps 11 26 Chemical Compositions 11 PERFORMANCE 27 Strength Test .12 28 Striking Test .12 29 Water Immersion Test .12 30 Submerged Burning Test 13 31 Inclined Burning Test 13 32 Burning Time Test 13 33 Ignition Temperature Te
18、st 14 34 Heating Test .15 34A Potassium Perchlorate Chemical Test 15 MARKING 35 General 16 NOVEMBER 5, 2013 HIGHWAY EMERGENCY SIGNALS - UL 912 2BUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JULY 18, 2000 HIGHWAY EMERGENCY SIGNALS - UL 912
19、 3 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL FOREWORD A. This Standard contains basic requirements for products covered by Underwriters Laboratories Inc. (UL) under its Follow-Up Service for this category within the
20、 limitations given below and in the Scope section of this Standard. These requirements are based upon sound engineering principles, research, records of tests and eld experience, and an appreciation of the problems of manufacture, installation, and use derived from consultation with and information
21、obtained from manufacturers, users, inspection authorities, and others having specialized experience. They are subject to revision as further experience and investigation may show is necessary or desirable. B. The observance of the requirements of this Standard by a manufacturer is one of the condit
22、ions of the continued coverage of the manufacturers product. C. A product which complies with the text of this Standard will not necessarily be judged to comply with the Standard if, when examined and tested, it is found to have other features which impair the level of safety contemplated by these r
23、equirements. D. A product employing materials or having forms of construction which conict with specic requirements of the Standard cannot be judged to comply with the Standard. A product employing materials or having forms of construction not addressed by this Standard may be examined and tested ac
24、cording to the intent of the requirements and, if found to meet the intent of this Standard, may be judged to comply with the Standard. E. UL, in performing its functions in accordance with its objectives, does not assume or undertake to discharge any responsibility of the manufacturer or any other
25、party. The opinions and ndings of UL represent its professional judgment given with due consideration to the necessary limitations of practical operation and state of the art at the time the Standard is processed. UL shall not be responsible to anyone for the use of or reliance upon this Standard by
26、 anyone. UL shall not incur any obligation or liability for damages, including consequential damages, arising out of or in connection with the use, interpretation of, or reliance upon this Standard. F. Many tests required by the Standards of UL are inherently hazardous and adequate safeguards for pe
27、rsonnel and property shall be employed in conducting such tests. MAY 28, 1999 HIGHWAY EMERGENCY SIGNALS - UL 912 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover highway emergency signals int
28、ended to be carried on commercial automotive vehicles and to be used as emergency traffic warning signals in the event of enforced parking of the vehicle on a highway. 1.2 These requirements cover three types of warning signals: Liquid-Burning Flares, Red Electric Warning Lanterns, and Fusees. 1.3 A
29、 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 risk of re or of electric shock or injury to persons shall be evaluated using appropriate additional component and end-pro
30、duct requirements to maintain the level of safety as originally anticipated by the intent of this standard. A product whose features, characteristics, components, materials, or systems conict with specic requirements or provisions of this standard does not comply with this standard. Revision of requ
31、irements shall be proposed and adopted in conformance with the methods employed for development, revision, and implementation of this standard. 1.3 revised July 18, 2000 2 General 2.1 Except as indicated in 2.2, a component of a product covered by this standard shall comply with the requirements for
32、 that component. 2.1 revised July 18, 2000 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 superseded by a requirement in this standard
33、. 2.2 revised July 18, 2000 2.3 A component shall be used in accordance with its rating established for the intended conditions of use. 2.3 revised July 18, 2000 2.4 Specic components are incomplete in construction features or restricted in performance capabilities. Such components are intended for
34、use only under limited conditions, such as certain temperatures not exceeding specied limits, and shall be used only under those specic conditions. 2.4 revised July 18, 2000 JULY 18, 2000 HIGHWAY EMERGENCY SIGNALS - UL 912 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUT
35、ION WITHOUT PERMISSION FROM UL LIQUID-BURNING FLARES CONSTRUCTION 3 General 3.1 These devices shall be provided in sets of three contained in a metal rack or box which can be securely mounted on the motor vehicle. 3.2 If a value for measurement as given in these requirements is followed by an equiva
36、lent value in other units, the rst stated value is the requirement. 4 Fuel 4.1 Flares shall be designed for use with liquid fuel having a classication not greater than that of kerosene in accordance with the requirements in the Standard for Tests for Comparative Flammability of Liquids, UL 340. 5 Fu
37、el Containers 5.1 Fuel containers and liquid-conning parts shall be made of material having a melting point (solidus temperature) of not less than 950F (510C) and affording resistance to corrosion equivalent to that of sheet steel having a thickness of not less than 0.026 inch (0.66 mm). 6 Burner Ho
38、ods 6.1 The burner shall be provided with a hood which can be secured to the body over the burner against a gasket which will prevent leakage of fuel while the device is not in use. 7 Stability 7.1 The design shall be such that the device will right itself when tilted so that the bottom forms an ang
39、le of 45 degrees with the horizontal. PERFORMANCE 8 Vibration and Shock Test 8.1 Three sample ares, in the metal rack or metal box provided and mounted as in service, shall not show evidence of structural failure or leakage in the body, or at a joint, while and after being subjected to 1 hour of ver
40、tical displacement of an amplitude of 1/8 inch (3.2 mm) at a frequency of 12 13 cycles per second (Hz). 8.2 For this test, amplitude is dened as the maximum displacement of sinusoidal motion from position of rest or one-half of the total vibration table displacement. 9 Rain Test 9.1 The ares used fo
41、r these tests shall be lled with kerosene to the level recommended in the manufacturers instructions and shall have the wicks adjusted as recommended by the manufacturer. JULY 18, 2000 HIGHWAY EMERGENCY SIGNALS - UL 912 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION
42、 WITHOUT PERMISSION FROM UL 9.2 After a preheating period of 5 minutes in still air, a sample are, lighted and mounted in its normal operating position on a table rotating at 4 revolutions per minute (rpm) and in a wind of approximately 2 miles per hour (3.2 km/h), shall be subjected to a water spra
43、y from an adjustable, solid-cone nozzle a (such as the ordinary garden hose spray nozzle) set so that the nozzle outlet is81 2feet (2.4 3.6 m) horizontally from the sample and13feet (0.3 0.9 m) vertically above the sample, with the nozzle axis pointing upward at an angle of approximately 45 degrees
44、from the horizontal and with the water striking the sample at an angle of approximately 45 degrees from the horizontal in a downward direction. a Solid cone spray nozzles operating at 5 7-1/2 psi (34 52 kPa) give a spray consisting of relatively large drops when set so that the center of the stream
45、at the are shows 0.10 inch (2.5 mm) per minute precipitation. At higher pressures, the drops are smaller. These conditions are comparable to actual rain. JULY 18, 2000 HIGHWAY EMERGENCY SIGNALS - UL 912 6AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISS
46、ION FROM UL JULY 18, 2000 HIGHWAY EMERGENCY SIGNALS - UL 912 6B No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 9.3 Under these conditions and with a water pressure of 5 7-1/2 psi (34 52 kPa) at the nozzle, the rate of pr
47、ecipitation at the location of the sample is to be adjusted to 0.10 inch (2.5 mm) per minute. The sample is to be introduced gradually into the spray and after being placed in the test location shall continue to operate under these conditions for 15 minutes. This test is to be made on each of the th
48、ree ares constituting a set. Two out of the three ares shall pass the test. 9.4 With the rate of rotation and the wind condition the same as specied in 9.2 and 9.3, the water pressure shall then be increased to a value of 10 12 psi (70 83 kPa) and the sample moved farther from the nozzle, if necessa
49、ry, to a location giving a precipitation of 0.03 inch (0.8 mm) per minute, striking the sample at approximately 45 degrees from the horizontal. Under these conditions, the sample shall continue to operate for 30 minutes. This test shall be made on each of the three ares constituting a set. Two out of the three ares shall pass the test. 9.5 With the rate of rotation and the wind condition the same as described in 9.2 and 9.3, the water pressure shall be further increased
