_RP_1639-2003_2020.pdf

Owner/Operators Guide to Operation and Maintenance of Vapor Recovery Systems at Gasoline Dispensing FacilitiesAPI RECOMMENDED PRACTICE 1639FIRST EDITION,JULY 2003REAFFIRMED,MAY 2020Owner/Operators Guide to Operation and Maintenance of Vapor Recovery Systems at Gasoline Dispensing FacilitiesDownstream SegmentAPI RECOMMENDED PRACTICE 1639 FIRST EDITION,JULY 2003REAFFIRMED,MAY 2020 SPECIAL NOTES API publications necessarily address problems of a general nature.With respect to partic-ular circumstances,local,state,and federal laws and regulations should be reviewed.API is not undertaking to meet the duties of employers,manufacturers,or suppliers towarn and properly train and equip their employees,and others exposed,concerning healthand safety risks and precautions,nor undertaking their obligations under local,state,or fed-eral laws.Information concerning safety and health risks and proper precautions with respect to par-ticular materials and conditions should be obtained from the employer,the manufacturer orsupplier of that material,or the material safety data sheet.Nothing contained in any API publication is to be construed as granting any right,byimplication or otherwise,for the manufacture,sale,or use of any method,apparatus,or prod-uct covered by letters patent.Neither should anything contained in the publication be con-strued as insuring anyone against liability for infringement of letters patent.Generally,API standards are reviewed and revised,reaffirmed,or withdrawn at least everyfive years.Sometimes a one-time extension of up to two years will be added to this reviewcycle.This publication will no longer be in effect five years after its publication date as anoperative API standard or,where an extension has been granted,upon republication.Statusof the publication can be ascertained from the API Downstream Segment telephone(202)682-8000.A catalog of API publications and materials is published annually and updatedquarterly by API,1220 L Street,N.W.,Washington,D.C.20005.This document was produced under API standardization procedures that ensure appropri-ate notification and participation in the developmental process and is designated as an APIstandard.Questions concerning the interpretation of the content of this standard or com-ments and questions concerning the procedures under which this standard was developedshould be directed in writing to the standardization manager,American Petroleum Institute,1220 L Street,N.W.,Washington,D.C.20005.Requests for permission to reproduce ortranslate all or any part of the material published herein should also be addressed to the gen-eral manager.API standards are published to facilitate the broad availability of proven,sound engineer-ing and operating practices.These standards are not intended to obviate the need for apply-ing sound engineering judgment regarding when and where these standards should beutilized.The formulation and publication of API standards is not intended in any way toinhibit anyone from using any other practices.Any manufacturer marking equipment or materials in conformance with the markingrequirements of an API standard is solely responsible for complying with all the applicablerequirements of that standard.API does not represent,warrant,or guarantee that such prod-ucts do in fact conform to the applicable API standard.All rights reserved.No part of this work may be reproduced,stored in a retrieval system,or transmitted by any means,electronic,mechanical,photocopying,recording,or otherwise,without prior written permission from the publisher.Contact the Publisher,API Publishing Services,1220 L Street,N.W.,Washington,D.C.20005.Copyright 2003 American Petroleum Institute FOREWORD This recommended practice provides guidance for owners and operators of gasoline dis-pensing facilities and regulatory officials regarding the operation and maintenance of gaso-line vapor recovery systems and components.Proper operation and maintenance of vaporrecovery equipment can improve compliance with vapor recovery regulations and providesubstantial emission reductions.In preparing this recommended practice,careful consideration was given to the following:a.Promoting safety.b.Protecting human health and the environment.c.Preventing release of vapors from service stations.d.Detecting petroleum vapor releases.e.Minimizing the cost of effective maintenance.Every effort has been made to ensure the consistency of the recommendations with theapplicable sections of NFPA 30 Flammable Liquid Code and NFPA 30A Code for MotorFuel Dispensing Facilities and Repair Garages.In addition,consideration was given tolocal,state and federal laws and regulations.API publications may be used by anyone desiring to do so.Every effort has been made bythe Institute to assure the accuracy and reliability of the data contained in them;however,theInstitute makes no representation,warranty,or guarantee in connection with this publicationand hereby expressly disclaims any liability or responsibility