UL 495-2016 UL Standard for Safety Power-Operated Dispensing Devices for LP-Gas (Fourth Edition).pdf
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1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 495 Power-Operated Dispensing Devices for LP-Gas STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED M
2、ATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Power-Operated Dispensing Devices for LP-Gas, UL 495 Fourth Edition, Dated April 7, 2016 Summary of Topics: The new edition of UL 495 is being issued to revise the Moist Ammonia-Air
3、Stress Cracking Test. The revised requirements are substantially in accordance with Proposal(s) on this subject dated February 12, 2016. 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 p
4、hotocopying, 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 spec
5、ial, 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
6、 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,
7、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. APRIL 7, 2016 UL 495 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERM
8、ISSION FROM UL APRIL 7, 2016 UL 495 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 7, 2016 1 UL 495 Standard for Power-Operated Dispensing Devices for LP-Gas First Edition February, 1986 Second Edition November
9、, 1994 Third Edition March, 2000 Fourth Edition April 7, 2016 This UL Standard for Safety consists of the Fourth Edition. 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 Collaborat
10、ive 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 all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exc
11、lusive property of UL. COPYRIGHT 2016 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 7, 2016 POWER-OPERATED DISPENSING DEVICES FOR LP-GAS - UL 495 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORI
12、ZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .5 2 General 5 2.1 Components .5 2.2 Units of measurement .6 2.3 Undated references .6 3 Glossary .6 CONSTRUCTION MECHANICAL EQUIPMENT 4 General 7 5 Materials .8 6 Base 9 7 Pedestal .9 8 Housing 10
13、9 Bypass Valves .11 10 Pressure Relief .11 11 Strainers .11 12 Meters .12 13 Vapor Separators .12 14 Valves .12 15 Piping and Fittings 13 16 Hose and Couplings 14 17 Control Application 15 ELECTRICAL EQUIPMENT 18 General 15 19 Motors .18 20 Switches .18 21 Wiring Methods .18 22 Locking Mechanism .20
14、 23 Lighting, Electrical, and Electronic Equipment Mounted on a Dispenser .20 PERFORMANCE 24 General 20 25 Endurance Test 21 25.1 Mechanical shaft seal .21 25.2 Retrieving mechanism 21 26 High-Pressure Leakage Test .21 27 Hydrostatic Strength Test 21 28 Moist Ammonia-Air Stress Cracking Test 22 29 F
15、loat Crushing Test .22 30 Marking Adhesion Test 23 31 Volume-Change Test 23 32 Weight-Loss Test .24 APRIL 7, 2016 POWER-OPERATED DISPENSING DEVICES FOR LP-GAS - UL 495 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 33 Aging Test .24 34 Tor
16、que Test 25 INSTALLATION INSTRUCTIONS 35 General 25 MANUFACTURING AND PRODUCTION TESTS 36 General 26 MARKINGS 37 General 27 APPENDIX A Standards for ComponentsA1 APRIL 7, 2016 POWER-OPERATED DISPENSING DEVICES FOR LP-GAS - UL 495 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DI
17、STRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover power-operated dispensing devices intended to be installed outside of buildings and used at service stations for dispensing liqueed petroleum gas used as an engine fuel. Requirements for installation and use of t
18、hese dispensing devices are included in the Liqueed Petroleum Gas Code (National Fire Codes, vol 2), NFPA 58, and the National Electrical Code, NFPA 70. 1.2 These requirements cover wiring methods used to install or interconnect control equipment when the equipment is located directly on or within t
19、he housing of the dispensing device. 1.3 These requirements do not cover control equipment that may authorize, monitor, or interrupt operation of a power-operated dispensing device. Such equipment includes panel mounted equipment located adjacent to the dispensing device, remote consoles located ins
20、ide a permanent structure, and auxiliary equipment physically attached to the dispensing device or enclosed by the pedestal and housing. 2 General 2.1 Components 2.1.1 Except as indicated in 2.1.2, a component of a product covered by this standard shall comply with the requirements for that componen
21、t. See Appendix A for a list of standards covering components used in the products covered by this standard. 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 covered by
22、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. Such componen
23、ts 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. APRIL 7, 2016 POWER-OPERATED DISPENSING DEVICES FOR LP-GAS - UL 495 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION
24、 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 o
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