1、Pressure Relief DevicesAN AMERICAN NATIO NAL STANDARDASME PTC 25-2008(Revision of ASME PTC 25-2001)Performance Test CodesCopyright 2008 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanf
2、ord University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.ASME PTC 25-2008(Revision of ASME PTC 25-2001)Pressure ReliefDevicesPerformance Test CodesAN AMERICAN NATIONAL STANDARDCopyright
3、 2008 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distributi
4、on is permitted.Uncontrolled when printed.Date of Issuance:January 13,2009This Code will be revised when the Society approves the issuance of a new edition.There will be noaddenda issued to this edition.ASME issues written replies to inquiries concerning interpretations of technical aspects of this
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11、duced 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 2009 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.
12、Copyright 2008 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or d
13、istribution is permitted.Uncontrolled when printed.CONTENTSNotice.viForeword.viiCommittee Roster.viiiCorrespondence With the PTC 25 Committee.ixIntroduction.xPart IGeneral.1Section 1Object and Scope.11-1Object.11-2Scope.11-3Measurement Uncertainty.11-4General.1Section 2Definitions and Description of
14、 Terms.32-1Purpose.32-2General.32-3Types of Devices.32-4Parts of Pressure Relief Devices.42-5Dimensional Characteristics Pressure Relief Valves.52-6Dimensional Characteristics Nonreclosing Pressure Relief Devices.72-7Operational Characteristics of Pressure Relief Devices.72-8Description of Terms.8Pa
15、rt IIFlow Capacity Testing.11Section 3Guiding Principles.113-1Items on Which Agreement Shall Be Reached.113-2Qualification of Person Supervising the Test.113-3Responsibility of Person Supervising the Test.113-4Test Apparatus.113-5Preliminary Tests.113-6Spare Instruments.113-7Calibration of Instrumen
16、ts.113-8Metering Sections.123-9Flow Resistance Test Rigs.123-10Adjustments During Tests.143-11Records and Test Results.143-12Measurement Uncertainty.14Section 4Instruments and Methods of Measurements.154-1General.154-2Fluid Conditions,Test Conditions,and Instrumentation.154-3Testing With Steam,Pressure Relief Device Discharging to AtmosphericPressure.184-4Testing With Gas or Air,Pressure Relief Device Discharging to AtmosphericPressure.234-5Testing With Liquids,Pressure Relief Devices Dischargin
