_RP_2210-2000_2020.pdf

Flame Arresters for Vents of Tanks Storing Petroleum ProductsAPI RECOMMENDED PRACTICE 2210 THIRD EDITION,MAY 2000 REAFFIRMED,MARCH 2020Flame Arresters for Vents of Tanks Storing Petroleum ProductsDownstream SegmentAPI RECOMMENDED PRACTICE 2210 THIRD EDITION,MAY 2000 REAFFIRMED,MARCH 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 recommended practices are reviewed and revised,reafrmed,or with-drawn at least every ve years.Sometimes a one-time extension of up to two years will beadded to this review cycle.This publication will no longer be in effect ve years after itspublication date as an operative API recommended practice or,where an extension has beengranted,upon republication.Status of the publication can be ascertained from the APIDownstream Segment telephone(202)682-8000.A catalog of API publications and mate-rials is published annually and updated quarterly by API,1220 L Street,N.W.,Washington,D.C.20005.This document was produced under API standardization procedures that ensure appropri-ate notication and participation in the developmental process and is designated as an APIstandard.Questions concerning the interpretation of the content of this recommended prac-tice or comments and questions concerning the procedures under which this standard wasdeveloped should be directed in writing to the director of the Downstream Segment,Ameri-can Petroleum Institute,1220 L Street,N.W.,Washington,D.C.20005.Requests for permis-sion to reproduce or translate all or any part of the material published herein should also beaddressed to the general manager.API recommended practices are published to facilitate the broad availability of proven,sound engineering and operating practices.These recommended practices are not intendedto obviate the need for applying sound engineering judgment regarding when and wherethese standards should be utilized.The formulation and publication of API recommendedpractices is not intended in any way to inhibit anyone from using any other practices.Any manufacturer marking equipment or materials in conformance with the markingrequirements of an API recommended practice is solely responsible for complying with allthe applicable requirements of that recommended practice.API does not represent,warrant,or guarantee that such products 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 2000 American Petroleum Institute FOREWORD This publication is intended to provide guidelines for evaluating the need for the use ofame arresters on the vents of tanks storing petroleum products.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 for loss or damage resultingfrom its use or for the violation of any federal,state,or municipal regulation with which thispublication may conict.Suggested revisions are invited and should be submitted to the director of the DownstreamSegment,American Petroleum Institute,1220 L Street,N.W.,Washington,D.C.20005.iii CONTENTS Page 1INTRODUCTION.12SCOPE.23BACKGROUND.24FLAME ARRESTERS.25PRESSURE-VACUUM VALVES AS A SUBSTITUTE FOR FLAME ARRESTERS.36SUMMARY.37CONCLUSION.4 v 1 Flame Arresters for Vents of Tanks StoringPetroleum Products 1Introduction 1.1 In addition to connections for liquid entry and with-drawal,every atmospheric xed-roof tank requires a vent thatallows escape or entry of air and/or vapors to avoid develop-ment of pressure or vacuum conditions sufcient to damagethe tank during liquid