UL-51-2002.pdf

《UL-51-2002.pdf》由会员分享，可在线阅读，更多相关《UL-51-2002.pdf（24页珍藏版）》请在三一文库上搜索。

1、UL 51 ISBN 0-7629-0793-2 Power-Operated Pumps for Anhydrous Ammonia and LP-Gas Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/29/2006 09:28:48 MDTNo reproduction or networking permitted without license from

2、IHS -,-,- Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/29/2006 09:28:48 MDTNo reproduction or networking permitted without license from IHS -,-,- Underwriters Laboratories Inc. (UL) 333 Pfi ngsten Road Nor

3、thbrook, IL 60062-2096 UL Standard for Safety for Power-Operated Pumps for Anhydrous Ammonia and LP-Gas, UL 51 Ninth Edition, Dated November 4, 2002 UL Standards for Safety are developed and maintained in the Standard Generalized Markup Language (SGML). SGML - an international standard (ISO 8879-198

4、6) - is a descriptive markup language that describes a documents structure and purpose, rather than its physical appearance on a page. Due to formatting differences resulting from the use of ULs new electronic publishing system, please note that additional pages (on which no requirements have been c

5、hanged) may be included in revision pages due to relocation of existing text and reformatting of the Standard. The master for this Standard at ULs Northbrook Office is the official document insofar as it relates to a UL service and the compliance of a product with respect to the requirements for tha

6、t product and service, or if there are questions regarding the accuracy of this Standard. ULs Standards for Safety are copyrighted by UL. Neither a printed copy of a Standard, nor the distribution diskette for a Standard-on-Diskette and the fi le for the Standard on the distribution diskette should

7、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. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any mea

8、ns, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. Revisions of UL Standards for Safety are issued from time to time. A UL Standard for Safety is current only if it incorporates the most recently adopted revisions. UL provides this Standard as is without

9、 warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or fi tness for any purpose. In no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of profi ts, lost savings, lo

10、ss 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 no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless

11、of the form of the claim. UL will attempt to answer support requests concerning electronic versions of its Standards. However, this support service is offered on a reasonable efforts basis only, and UL may not be able to resolve every support request. UL supports the electronic versions of its Stand

12、ards only if they are used under the conditions and operating systems for which it is intended. ULs support policies may change from time-to-time without notifi cation. UL reserves the right to change the format, presentation, fi le types and formats, delivery methods and formats, and the like of bo

13、th its printed and electronic Standards without prior notice. Purchasers 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 judgement (including reasonable attorneys fees) resulting

14、from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. NOVEMBER 4, 2002 UL 51tr1 Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/29/2006 09

15、:28:48 MDTNo reproduction or networking permitted without license from IHS -,-,- If a single-user version electronic Standard was purchased, one copy of this Standard may be stored on the hard disk of a single personal computer, or on a single LAN fi le-server or the permanent storage device of a mu

16、ltiple-user computer in such a manner that this Standard may only be accessed by one user at a time and for which there is no possibility of multiple concurrent access. If a multiple-user version electronic Standard was purchased, one copy of the Standard may be stored on a single LAN fi le-server,

17、or on the permanent storage device of a multiple-user computer, or on an Intranet server. The number of concurrent users shall not exceed the number of users authorized. Electronic Standards are intended for on-line use, such as for viewing the requirements of a Standard, conducting a word search, a

18、nd the like. Only one copy of the Standard may be printed from each single-user version of an electronic Standard. Only one copy of the Standard may be printed for each authorized user of a multiple-user version of an electronic Standard. Because of differences in the computer/software/printer setup

19、 used by UL and those of electronic Standards purchasers, the printed copy obtained by a purchaser may not look exactly like the on-line screen view or the printed Standard. An employee of an organization purchasing a UL Standard can make a copy of the page or pages being viewed for their own fair a

20、nd/or practical internal use. The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, fi 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 h

21、ave been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. New product submittals made prior to a specifi ed future effective date will be judged under all of the requirements in this Standard including those requireme

22、nts with a specifi ed future effective date, unless the applicant specifi cally requests that the product be judged under the current requirements. However, if the applicant elects this option, it should be noted that compliance with all the requirements in this Standard will be required as a condit

23、ion of continued Listing, and Follow-Up Services after the effective date, and understanding of this should be signifi ed in writing. Copyright 2002 Underwriters Laboratories Inc. This Standard consists of pages dated as shown in the following checklist: PageDate 1-18 . . . . . . . . . . . . . . . .

24、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . November 4, 2002 A1-A2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . November 4, 2002 NOVEMB

25、ER 4, 2002 UL 51tr2 Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/29/2006 09:28:48 MDTNo reproduction or networking permitted without license from IHS -,-,- November 4, 2002 1 UL 51 Standard for Power-Opera

26、ted Pumps for Anhydrous Ammonia and LP-Gas The fi rst edition was titled Power-Operated Pumps for LP-Gas. The second, third, and fourth editions were titled Pumps for Anhydrous Ammonia and LP-Gas. First Edition March, 1956 Second Edition September, 1959 Third Edition November, 1969 Fourth Edition Se

27、ptember, 1972 Fifth Edition September, 1974 Sixth Edition March, 1980 Seventh Edition October, 1992 Eighth Edition November, 1995 Ninth Edition November 4, 2002 An effective date included as a note immediately following certain requirements is one established by Underwriters Laboratories Inc. Revisi

28、ons of this Standard will be made by issuing revised or additional pages bearing their date of issue. A UL Standard is current only if it incorporates the most recently adopted revisions, all of which are itemized on the transmittal notice that accompanies the latest set of revised requirements. ISB

29、N 0-7629-0793-2 COPYRIGHT 1974, 2002 UNDERWRITERS LABORATORIES INC. Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/29/2006 09:28:48 MDTNo reproduction or networking permitted without license from IHS -,-,- N

30、OVEMBER 4, 2002POWER-OPERATED PUMPS FOR ANHYDROUS AMMONIA AND LP-GAS - UL 512 No Text on This Page Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/29/2006 09:28:48 MDTNo reproduction or networking permitted w

31、ithout license from IHS -,-,- CONTENTS FOREWORD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 INTRODUCTION 1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

32、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 2 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 2.1 Components . . . . . . . . . . . . . . .

33、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 2.2 Units of measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 2.3 Undated references . . . . . . . . . . . . . .

34、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 3 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 CONSTRUCTION 4 Assembly . . . . . . .

35、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 5 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

36、 . .7 6 Bodies, Covers, and Heads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 7 Strainers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

37、 . . . . . . . . . .9 8 Springs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 9 Bypass Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

38、. . . . . . . . . . . . . . . . . . . . . . .10 10 Relief Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 11 Guards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

39、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 12 Pipe Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 PERFORMANCE 13 General . . . . . . . . . . . . . . . . . . . . . . . .

40、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 14 Deformation Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 15 Leakage Test . . . . . . . . . . .

41、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 16 Endurance Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 17 Bypass Valve Test . .

42、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 18 Hydrostatic Strength Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 19 10-Day Moist Am

43、monia Air Stress Cracking Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 20 Tests for Synthetic Rubber Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 20.1 General . . . . . . . . . . . . . . . .

44、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 20.2 Volume change test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 20.3 Weight loss test . . . . . . . . . . . . . .

45、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 MANUFACTURING AND PRODUCTION TESTS 21 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 MA

46、RKINGS 22 Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 APPENDIX A Standards for Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

47、 . . . . . . . . . . . . . . . . A1 NOVEMBER 4, 2002POWER-OPERATED PUMPS FOR ANHYDROUS AMMONIA AND LP-GAS - UL 513 Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/29/2006 09:28:48 MDTNo reproduction or networ

48、king permitted without license from IHS -,-,- 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 limitations given below and in the Scope section of this Standard. These requirements are based upon sound engineering principles, research, records of tests and fi eld experience, and an appreciation of the problems of manufacture, installation, and use derived from consultation with and information obtained from manufacturers, users, inspection authori