ASME_PTC-18-2002.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.ANAMERICANNATIONALSTANDARDHYDRAULICTURBINESANDPUMP-TURBINESPERFORMANCETESTCODESASMEPTC18-2002(CONSOLIDATIONofASMEPTC18-1992andASMEPTC18.1-1978)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:April 11,2003This Code will be revised when the Society approves the issuance of a new edition.There will be noaddenda issued to this edition.ASME will issue written replies to inquiries concerning interpretations of technical aspects of thisCode.Interpretations are published on the ASME Web site under the Committee Pages at http:/www.asme.org/codes as they are issued.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 NationalStandards.The Standards Committee that approved the code or standard was balanced to assure that individuals fromcompetent and concerned interests have had an opportunity to participate.The proposed code or standard was madeavailable forpublic review andcomment thatprovides an opportunityfor additional publicinput 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 anyitems mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable letters patent,nor assume any such liability.Users of a code or standard are expresslyadvised that determination of the validity of any such patent rights,and the risk of infringement of such rights,isentirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not to be interpreted asgovernment or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the establishedASME procedures and policies,which precludes the issuance of interpretations by individuals.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 EngineersThree Park Avenue,New York,NY 10016-5990Copyright 2003 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll Rights ReservedPrinted 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.CONTENTSForeword.vCommittee Roster.vii1Object and Scope.11.1Object.11.2Scope.12Definitions and Description of Terms.23Guiding Principles.194Instruments and Methods of Measurements.254AGeneral.254BHead and Pressure Measurement.254CFlow Measurement.294DPower Measurement.594ESpeed Measurement.634FTime Measurement.634GRelative Flow Measurement Index Test.645Computation of Results.705.1Measured Values.705.2Conversion of Test Results to Specified Conditions.705.3Computation of Turbine Index Test Results.715.4Evaluation of Errors.725.5Assessment of Turbine Index Test Errors.725.6Comparison with Guarantees.726Report of Results.73Figures2.4AHead Definition,Measurement and Calibration,Vertical Shaft Machine WithSpiral Case and Pressure Conduit.132.4BHead Definition,Vertical Shaft Kaplan or Propeller Machine with Semi-SpiralCase.142.4CHead Definition,Bulb Machine.152.4DHead Definition,Horizontal Shaft Impulse Turbine(One or Two Jets).162.4EHead Definition,Vertical Shaft Impulse Turbine.172.5Reference Elevation of Zcof Turbines and Pump-Turbines.183.23ALimits of Permissible Deviation from Specified Conditions Operating in TurbineMode.233.23BLimits of Permissible Deviations from Specified Conditions Operating in PumpMode.244B.11Pressure Tap.274B.12Calibration Connections for Pressure Gages or Pressure Transducers.284C.17Location of Point Velocity Measurements with Weighting Factors Kifor theLog-Linear Method in a Rectangular Measurement Section.314C.35Typical Pressure-Time Diagram.354C.37Arrangement of Pressure-Time Apparatus.364C.40Damped Harmonic Waves.374C.42Sample of Data and Computation Sheet of a Flow Rate Measurement by thePressure-Time Method.384C.53Example of Digital Pressure-Time Signal.414C.61Ultrasonic Method Diagram to Illustrate Principle.43iiiCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.