12-3_R2004_E1997.pdf

Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.REAFFIRMED 2004FOR CURRENT COMMITTEE PERSONNELPLEASE E-MAIL CSasme.orgASME PTC 12.3-1 997(REVISION OF ASME PTC 12.3-1977)Performance Test Code on Deaerators Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.Date of Issuance:October 31.1997 This document will be revised when the Society approves the issuance of the next edition.There will be no Addenda issued to ASME PTC 12.3-1997.Please Note:ASME issues written replies to inquiries concerning interpretation of technical aspects of this document.The interpretations are not part of the document.PTC 12.3-1 997 is being issued with an automatic subscription service to the interpre-tations that will be issued to it up to the publication of the next edition.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under procedures accredited as meeting the criteria for American National Standards.The Consensus Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate.The proposed code or standard was made available for public review and comment which provides an opportunity for additional public input from industry,academia,regulatory agencies,and the public-at-large.ASME does not approve,rate,or endorse any item,construction,proprietary device,or activity.ASME does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable Letters Patent,nor assume any such liability.Users of a code or standard are expressly advised that determination of the validity of any such patent rights,and the risk of infringement of such rights,is entirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not to be interpre-ted as government or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations issued in accordance with governing ASME procedures and policies which preclude the issuance of interpretations by individual volunteers.No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.The American Society of Mechanical Engineers 345 East 47th Street New York.NY 1001 7 Copyright 0 1997 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved Printed in U.S.A.Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.FOREWORD(This Foreword is not part of ASME PTC 12.3-1997.)On September 1,1989,the Board on Performance Test Codes (BPTC)voted to reactivate the Performance Test Code committee,PTC 12.3,to undertake the revision of PTC 12.3-1977,the Performance Test Code on Deaerators.Shortly thereafter,the Committee was reconstituted,and had its first meeting on May 22-23,1991,with 3 of the original members on the new Committee.One of the requirements for the satisfactory operation of the boiler feed system in a steam plant is high quality boiler feedwater,freefrom dissolved oxygen and carbon dioxide.To meet the dissolved oxygen requirements of the steam generator,improvements in the design of mechanical deaerators have been made.Design requirements demand extreme reliability of oxygen testing of boiler feedwater.This Code was approved by the PTC 12.3 committee on May 31,1996.It was then approved and adopted by the Council as a Standard practice of the Society by action of the BPTC on October 25,1996.This Performance Test Code was also approved as an American National Standard by the ANSI Board of Standards Review on February 6,1997.Ill Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.NOTICE All Performance Test Codes MUST adhere to the requirements of PTC 1,GENERAL INSTRUCTIONS.The following information is based on that document and is included here for emphasis and for the convenience of the user of this Code.It is expected that the Code user is fully cognizant of Parts I and I11 of PTC 1 and has read them prior to applying this Code.ASME Performance Test Codes provide test procedures which yield results of the highest level of accuracy consistent wi