pec_12GDU-1990_scan.pdf

Specification for Glycol-Type Gas Dehydration Units API SPECIFICATION 12GDU(SPEC 12GDU)FIRST EDITION,DECEMBER 15,1990 American Petroleum Institute 1220 L Street,Northwest Washington,DC 20005 JPIssued by AMERICAN PETROLEUM INSTITUTE Production Department FOR INFORMATION CONCERNING TECHNICAL CONTENTS OF THIS PUBLICATION CONTACT THE API PRODUCTION DEPARTMENT,2535 ONE MAIN PLACE,DALLAS,TX 75202-3904-(214)748-3841.SEE BACK SIDE FOR INFORMATION CONCERNING HOW TO OBTAIN ADDITIONAL COPIES OF THIS PUBLICATION.Users of this publication should become familiar with its scope and content.This publication Is Intended to supplement rather than replace individual engineering judgment.OFFICIAL PUBLICATION ip REG.U.S.PATENT OFFICE Copyright 1990 American Petroleum Institute 2 American Petroleum Institute TABLE OF CONTENTS Page Foreword.3 Policy.4 Section 1:Scope.5 Section 2:Term inology.6 Section 3:Process Description.8 Section 4:Materia l.10 Section 5:Design.12 Section 6:Fabri cation,Testing and Painting.15 Section 7:Marking.16 Section 8:Inspection and Rejection.17 Appendix A:Process Considerations.18 Appendix B:Corrosion Control Guidelines.19 Appendix C:Dehydration Design Information.21 Appendix D:Sizing Calculations.26 Appendix E:Examp le Calcuations.33 Appendix F:Structural Design Guidelines.34 Appendix G:Combustion Efficiency.35 Appendix H:Installation,Start-up,Operation and Maintenance.37 Appendix I:Use of API Monogram.39 Spec 12GDU:Glycol-Type Gas Dehydration Units 3 FOREWORD a.This specification is under the jurisdiction of the API Committee on Standardization of Production Equipment.b.American Petroleum Institute(API)Specifications are published as aids to the procurement of standard-ized equipment and materials,as well as instructions to manufacturers of equipment or materials covered by an API Specification.These Specifications are not intended to obviate the need for sound engineering,nor to inhibit in any way anyone from purchasing or producing prod-ucts to other specifications.c.The formulation and publication of API Specifica-tions and the API monogram program are not intended in any way to inhibit the purchase of products from companies not licensed to use the API monogram.d.API Specific.ations ma.v be used by anyone desiring to do so,and diligent effort has been made by the Insti-tute to assure the accuracy and reliabilicy of the data contained therein.However,the Institute makes no representation,warrancy,or guarantee in connection with the publication of any API Specification and here-by expressly disclaims any liabilicy or responsibilicy for loss or damage resulting from their use,or municipal regulation with which an API Specification may con-flict,or for the infringement of any patent resulting from the use of an API Specification.e.Any manufacturer producing equipment or mate-rials represented as conforming with an API Specifica-tion is responsible for complying with all the provisions of that Specification.The American Petroleum Institute does not represent,warrant or guarantee that such products do in fact conform to the applicable API standard or specification.This Standard shall become effective on the dat.e printed on tl1e cover but may be used voluntarily from tJ1e date of distribution.Attention Users of this Publication:Portions of this publication have been changed from the previous edi-tion.The locations of changes have been marked with a bar in the margin.In some cases the changes are sig-nificant,while in other cases the changes reflect minor editorial adjustments.The bat notations in the margins are provided as an aid to users to identify those parts of this publication that have been changed from the pre-vious edition,but API makes no warranty as to the accuracy of such bar not-ations.NOTE This is tl1efirst edition of API Spec 12GDU.Requesl.s for permission to reproduce or translat.e all or any part of the material published herein should be add1-essed to tl1e Director,Production Departm.ent.,2585 One Main Place,Dallas TX 75202-8904.4 American Petroleum Institute POLICY API PUBLICATIONS NECESSARILY ADDRESS PROBLEMS OF A GENERAL NATURE.WITH RESPECT TO PARTICULAR CIRCUMSTANCES,LOCAL,STATE AND FEDERAL LAWS AND REG-ULATIONS SHOULD BE REVIEWED.API IS NOT UNDERTAKING TO MEET DUTIES OF EMPLOYERS,MANUFACTURERS OR SUP-PLIERS TO WARN AND PROPERLY TRAIN AND EQUIP THEffi EMPLOYEES,AND OTHERS EX-POSED,CONCERNING HEALTH AND SAFETY RISKS AND PRECAUTIONS,NOR UNDERTAKING THEIR OBLIGATIONS UNDER LOCAL,STATE,OR FEDERAL LAWS.NOTHING CONTAINED IN ANY API PUBLlCA-TION IS TO BE CONSTRUED AS GRANTING ANY RIGHT,BY IMPLICATION OR OTHERWISE,FOR THE MANUFACTURE,SALE,OR USE OF ANY METHOD,APPARATUS,OR PRODUCT COVERED BY LETTERS PATENT.NEITHER SHOULD ANY-THING CONTAINED IN THE PUBLICATION BE CONSTRUED AS INSURING ANYONE AGAINST LIABILITY FOR INFRINGEMENT OF LETTERS PATENT.GENERALLY,API STANDARDS ARE REVIEWED AND REVISED,REAFFIRMED,OR WITHDRAWN AT LEAST EVERY FIVE YEARS.SOMETIMES A ONE-TIME EXTENSION OF UP TO TWO YEARS W