Air-Cooled Steam Condensers Performance Test Codes A N A M E R I C A N N A T I O N A L S T A N D A R D ASME PTC ASME. ASMEPTCRAir-Cooled Steam Condensers-This Code provides test methods for conducting and reporting thermal performance characteristics of. ASME PTC (R) Air-Cooled Steam Condensers This Code provides test methods for conducting and reporting thermal performance.
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Published on Jan View Download June 24, This Code will be revised when the Society approves the issuance of a new edition. ASME issues written replies to inquiries concerning interpretations of technical aspects of thisdocument. 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 pfc participate.
The proposed code or standard was madeavailable for public review and comment that 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 300.1 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 assumes 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.
ASME PTC (R) – Air-Cooled Steam Condensers
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 30. accordance with the establishedASME procedures and policies, which precludes the issuance of interpretations by individuals. No part awme this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.
The following information is based on that document and is included here foremphasis and for the convenience of the user of the Code. ASME Performance Test Codes provide test procedures that yield results of the highest levelof accuracy consistent with the best engineering knowledge and practice currently available.
They were developed by balanced committees representing all concerned interests and specifyprocedures, instrumentation, equipment-operating requirements, calculation methods, and uncer-tainty analysis. When tests are run in accordance with a Code, the test results themselves, without adjustmentfor uncertainty, yield the best available indication of the actual performance of the tested ssme.
Therefore, it is recommended that the parties to a commercial test agree before startingthe test and preferably before aske the contract on the method to be used for comparing thetest results to the contractual guarantees.
It is beyond the scope of any Amse to determine orinterpret how awme comparisons shall be made. It was the first attempt by ASMEto provide procedures for testing air-cooled heat exchangers. Except for a preliminary draft, theCode was not completed at that time due to the death of the Chair and he was its only CommitteeMember. In the Board decided to resume the effort to produce a performance test for air-cooled heat exchangers. Subsequently a committee was formed and developed an appropriateCode after several years.
The issue ptd that Code was a credit to those on the Committee. It was very comprehensive,erudite, and a definite contribution to the art of engineering. But it was infrequently used dueto the difficulty of measuring the airflow through the equipment and other aspects of its applicationto the great variety of exchangers that existed and the minimal acceptance testing that wastraditionally specified in the general heat exchanger industry. Duringthe Board on Performance Test Codes had taken notice that air-cooled steamcondensers ACCs were being largely installed on power plants at an increasing rate throughoutthe country and the world.
At 300.1 point in time, there were over ACCs worldwide withmore than fifty large applications of the technology in the United States. These machines areessentially enormous radiators served by a multiplicity of fans that, asmr to water-cooledcondensers, are relatively expensive and generally exhibit a ptd performance.
They were beingapplied however in order to conserve water resources; to allow a particular plant to be locatedin water scarce regions; to reduce the aquatic and airborne environmental effects often associatedwith once-through or wet cooling towers; and to bring projects to completion quickly withouthaving to address restrictive regulations related to any future use of cooling waters.
In addition,because their size could be as big as an acre or more, it appeared there was there was no directlyfitting test code that would allow a cost-effective, practical engineering performance test of theequipment. Alarge national Committee was convened the following year that was comprised of experts frommanufacturing, utility-owners, test agency, academia, and consultants in the field.
Before the work of revising or drafting up a Code began, a careful review of PTC 30 wasundertaken and some field-test experience with that Code was reported to the Asmme. As aresult, the Committee decided not to update the existing Code but rather to create a new Codeexpressly for the performance testing of the ACCs utilized on power plants. The general focus of PTC Recognizing, however, the importance ofminimal turbine exhaust pressure on plant generation, the Committee also featured twoAppendices of the Code that pfc both methods of Performance Monitoring and RoutinePerformance Testing.
These appendices contain pragmatic techniques that use lesser accuracyinstrumentation and procedures that will allow plant personnel pyc maintain the lowest turbinebackpressures without the higher costs or engineering efforts associated with acceptance testing. This edition of PTC Albert, General Electric Co.
Bannister, Member Emeritus, ConsultantJ.
ASME PTC 30.1-2007.pdf
Campbell, Southern Company ServicesM. Friedman, Siemens Power Generation, Inc. Gerhart, University of EvansvilleW. Hays, Honorary Member, Asmd. Jorgensen, Member Emeritus, ConsultantJ. Cuchens, Southern Company Services, Inc. Gantnier, Bechtel Power Corp. Gerhart, Lawrence Technological UniversityviiF. Light, Honorary Member, RetiredM. Rabensteine, Environmental Systems Corp. Sommerlad, Member Emeritus, ConsultantW. Wood, Duke Power Co. Hutton, Baltimore Oil Co.
Wilber, Alternate, Environmental Systems Corp. ASME Codes are developed and maintained with the intent to represent the consensusof pfc interests. As such, users of this Code may interact with as,e Committee by requestinginterpretations, proposing revisions, and attending Committee meetings. Correspondence shouldbe addressed toSecretary, PTC Revisions are made periodically to the Code to incorporate changes thatappear necessary or desirable, as demonstrated by the experience gained from the applicationof the Code.
Approved revisions will be published periodically. The Committee welcomes proposals for revisions to this Code. Such proposals should be asspecific as possible, citing the paragraph number sthe proposed wording, and a detailed descrip-tion of the reasons for the proposal, including any pertinent documentation.
Cases may be issued for the purpose of providing alternative rules whenjustified, to permit early implementation of an approved revision when the need is urgent, or toprovide rules not covered by existing provisions. The requestshould identify the Code, the paragraph, figure or table asmd sand be written as a Questionand Reply in the same format as existing Qsme.
Requests for Cases should also indicate theapplicable edition s of the Code to which the proposed Case applies. Upon request, the PTC Interpretations can only be rendered in response pyc a written requestsent to the Secretary of the PTC The request for interpretation should be clear and unambiguous.
Cite the applicable paragraph number s and the topic of the inquiry.
ASME PTC 空气冷却蒸汽冷凝剂 – MBA智库文档
Cite the applicable edition of the Code for which the interpretation is beingrequested. Phrase the question as a request for an interpretation of a specific requirementsuitable for general understanding and use, not as a request for an approvalof a proprietary design or situation. The inquirer may also include any plansor drawings that are necessary to explain the question; however, they 3.1 contain proprietary names or information.
Requests that are not in this format will be rewritten amse this format by the Committee priorto being answered, which may inadvertently change the intent of the original request.
ASME procedures provide for reconsideration of any interpretation when or if additionalinformation that might affect an interpretation is available. ASME does asms, certify, rate, or endorse any item, construction, proprietary device, or activity. Persons wishing to attend any meeting should contact the Secretaryof the PTC This Code provides explicit test procedures to yieldresults of the highest levels of accuracy consistent withthe best engineering knowledge taking into account testcosts and the value of the information obtained 30.1 and practice currently available.
This Code pro-vides rules for conducting acceptance tests. It also pro-vides guidelines for monitoring thermal performanceand conducting routine tests.
The tests can be used to determine compliance withcontractual obligations and the Code can be incorpo-rated into commercial agreements.
A test shall be consid-ered an ASME Code Test only if the test procedurescomply with those stipulated in this Code and the post-test uncertainty analysis results aske in accordance withsubsection This steam flow capabilitymay be alternatively expressed as a deviation fromdesign flow capability, a deviation from design turbinebackpressure, or as the absolute value of the steam tur-bine backpressure.
This Code also provides proceduresfor assessing compliance to specified dissolved oxygenand specified condensate temperature.
This Ptd doesnot address procedures for assessing noise.
The Code is not intended for tests of a devices for which the process fluid is above atmo-spheric pressure b devices for process fluids other than steam c devices for single-phase process fluids d wet surface air cooled condensers e natural draft or fan-assisted air cooled condensers1 f air-cooled condensers with inlet air conditioningin-serviceThe determination of special data or verification ofguarantees that are outside the scope of this Code shallbe made only with the written agreement of the partiesto the test.
The agreed methods of measurement andcomputation shall be defined in writing and fullydescribed in the test report. Any departure from Coderequirements could introduce additional uncertaintybeyond that considered acceptable to meet the objectivesof the Code. The application of uncertainties to adjust test resultsis not part of this Code; the test results themselves pro-vide the best indication of actual performance.
Theuncertainty is used to determine the quality of the testand reflects the accuracy of the test instrumentation andstability of the test conditions. Test tolerance, margin,and allowance are commercial matters that are notaddressed by this Code. The maximum uncertainties shown below are lim-its not targets. A Code precept is to design a test forthe highest practical level of accuracy based on currentengineering knowledge.
For a commercial test, this phi-losophy is in the best interest of all parties to the test. Deviations from the methods stated in this Code areacceptable only if it can be demonstrated to the testparties that the deviations provide equal or lower uncer-tainty in the calculated test result.
A pretest uncertainty analysis shall be performed toestablish the expected level of uncertainties for the test,including an estimate of the random precision uncer-tainty based on experience. A post-test uncertainty analysis is similarly required.
The results of a thermal performance test, conducted infull compliance with the procedures and instrumenta-tion specified in this Code, shall be considered valid ifASME PTC If the post-test uncertainty isgreater than 4. Inaddition, the uncertainty of Code tests that determinethe condensate temperature shall be less than 0. Because of the variety of methods and instrumentsused in the conduct of performance tests, the test uncer-tainty must be determined by an uncertainty analysis2based on ASME PTC It should benoted that the collection, reduction, and evaluation ofthermal data are greatly facilitated through the use ofa data acquisition system.