pec_12F-2019.pdf

Specification for Shop-welded Tanks for Storage of Production LiquidsAPI SPECIFICATION 12FTHIRTEENTH EDITION,JANUARY 2019API MONOGRAM PROGRAM EFFECTIVE DATE:JULY 2019Special NotesAPI publications necessarily address problems of a general nature.With respect to particular circumstances,local,state,and federal laws and regulations should be reviewed.Neither API nor any of APIs employees,subcontractors,consultants,committees,or other assignees make anywarranty or representation,either express or implied,with respect to the accuracy,completeness,or usefulness of theinformation contained herein,or assume any liability or responsibility for any use,or the results of such use,of anyinformation or process disclosed in this publication.Neither API nor any of APIs employees,subcontractors,consultants,or other assignees represent that use of this publication wound not infringe upon privately owned rights.Classified areas may vary depending on the location,conditions,equipment,and substances involved in any givensituation.Users of this specification should consult with the appropriate authorities having jurisdiction.Users of thisspecification should not rely exclusively on the information contained in this document.Sound business,scientific,engineering,and safety judgment should be used in employing the information contained herein.API publications may be used by anyone desiring to do so.Every effort has been made by the Institute to ensure theaccuracy and reliability of the data contained in them;however,the Institute makes no representation,warranty,orguarantee in connection with this publication and hereby expressly disclaims any liability or responsibility for loss ordamage resulting from its use or the violation of any authorities having jurisdiction with which this publication is inconflict.API publications are published to facilitate the broad availability of proven,sound engineering and operatingpractices.These publications are not intended to obviate the need for applying sound engineering judgmentregarding when and where these publications should be utilized.The formulation and publication of API publicationsis not intended in any way to inhibit anyone from using any other practices.Any manufacturer marking equipment or material in conformance with the marking requirements of an API standardis solely responsible for complying with all of the applicable requirements of that standard.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,translated,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,NW,Washington,DC 20005.Copyright 2019 American Petroleum InstituteForewordNothing contained in any API publication is to be construed as granting any right,by implication or otherwise,for themanufacture,sale,or use of any method,apparatus,or product covered by letters patent.Neither should anythingcontained in the publication be construed as insuring anyone against liability for infringement of letters patent.The verbal forms used to express the provisions in this specification are as follows:the term“shall”denotes a minimum requirement in order to conform to the standard;the term“should”denotes a recommendation or that which is advised but not required in order to conform to thestandard;the term“may”is used to express permission or a provision that is optional;the term“can”is used to express possibility or capability.This document was produced under API standardization procedures that ensure appropriate notification andparticipation in the developmental process and is designated as an API standard.Questions concerning theinterpretation of the content of this publication or comments and questions concerning the procedures under whichthis publication was developed should be directed in writing to the Director of Standards,American PetroleumInstitute,1220 L Street,NW,Washington,DC 20005.Requests for permission to reproduce or translate all or any partof the material published herein should also be addressed to the director.For API Monogram Program licensees and APIQR Program registrants,this standard shall become effective on theprogram date printed on the cover but may be used voluntarily from the date of publication.Generally,API standards are reviewed and revised,reaffirmed,or withdrawn at least every 5 years.A one-timeextension of up to 2 years may be added to this review cycle.Status of the publication can be ascertained from theAPI Standards Department,telephone(202)682-8000.A catalog of API publications and materials is publishedannually by API,1220 L Street,NW,Washington,DC 20005.Suggested revisions are invited and should be submitted to the Standards Department,API,1220 L Street,NW,Washington,DC 20005,standardsapi.org.iiiC