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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June 24, This Code will be revised when the Society approves the issuance of a new edition. ASME issues written zsme to inquiries concerning interpretations of technical aspects of this document. This code or standard was developed under procedures accredited as meeting the criteria for American National Standards.
The Standards 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 that provides an opportunity for additional public input from industry, academia, regulatory agencies, and the public-at-large. 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 assumes 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 interpreted as government or industry endorsement of this code or standard. ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME 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 following information is based on that document and is included here for emphasis and for the convenience of the user of the Code. ASME Performance Test Codes provide test procedures that yield results of the highest level of accuracy consistent with the best engineering knowledge and practice currently available.
They were developed by balanced committees representing all concerned interests and specify procedures, instrumentation, equipment-operating requirements, calculation methods, and uncer- tainty analysis.
When tests are run in accordance with a Code, the test results themselves, without adjustment for uncertainty, yield the best available indication of the actual performance of the tested equip- ment. Therefore, it is recommended that the parties to a commercial test agree before starting the test and preferably before signing the contract on the method to be used for comparing the test results to the contractual guarantees.
It is beyond the scope of any Code to determine or interpret how such comparisons shall be made. It was the first attempt by ASME to provide procedures for testing air-cooled heat exchangers. Except for a preliminary draft, the Code was not completed at ptf time due to the death of the Chair and he was its only Committee Member. 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 appropriate Code after several years. The issue of 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 wsme to the difficulty of measuring the airflow through the equipment and other aspects of its application to the great variety of exchangers that existed and the minimal acceptance testing that was traditionally specified in the general heat exchanger industry.
Duringthe Board on Performance Test Codes had taken notice that air-cooled steam condensers ACCs were being largely installed on power plants at an increasing rate throughout the country and the world. At that point in time, there were over ACCs worldwide with more than fifty large applications of the technology in the United States.
These machines are essentially enormous radiators served by a multiplicity of fans that, compared to water-cooled condensers, tpc relatively expensive and generally exhibit a poorer performance.
ASME PTC 空气冷却蒸汽冷凝剂 – MBA智库文档
They were being applied however in order to conserve water resources; to allow a particular plant to be located in water scarce regions; to reduce the aquatic and airborne environmental effects often associated with once-through or wet cooling towers; and to bring projects to completion quickly without having 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 same was there was no directly fitting test code that would allow a cost-effective, practical engineering performance test of the equipment.
A large national Committee was convened the following year that was comprised of experts from manufacturing, 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 was undertaken and some field-test experience with that Code was reported to the Committee.
As a result, the Committee decided not to update the existing Code but rather to create a new Code expressly for the performance testing of the ACCs utilized on power plants. The general focus of PTC Recognizing, however, the importance of minimal turbine exhaust pressure on plant 300.1, the Committee also featured two Appendices of the Code that address both methods of Performance Monitoring and Routine Performance Testing. These appendices contain pragmatic techniques that use lesser accuracy instrumentation and procedures that asmw allow plant personnel to maintain the lowest turbine backpressures without the higher costs or engineering efforts associated with acceptance testing.
This edition of PTC Friedman, Vice Chair J. Albert, General Electric Co. Bannister, Member Emeritus, Consultant J. Burns, Burns Engineering W.
Campbell, Southern Company Services M. Dooley, Alstom Power A. Egli, Alstom Power J. Friedman, Siemens Power Generation, Inc.
Gerhart, University of Evansville W.
ASME PTC (R) – Air-Cooled Steam Condensers
Hays, Honorary Member, Retired T. Jorgensen, Member Emeritus, Consultant J. Keyser, Survice Engineering S. Chandran, Holtec International J. Cuchens, Southern Company Services, Inc. Gantnier, Bechtel Power Corp. Gerhart, Lawrence Technological University vii F. Light, Honorary Member, Retired M.
Milton, Reliant Energy G.
Plumley, Plumley Associate R. Priestley, General Electric J. Rabensteine, Environmental Systems Corp. Sommerlad, Member Emeritus, Consultant W.
Wood, Duke Power Co. Hennon, Clean Air D. Hutton, Baltimore Oil Co. Wilber, Alternate, Environmental Systems Corp. Wheeler, Clean Air R. ASME Codes are developed and maintained with the intent to represent the consensus of concerned interests. As such, users of this Code may interact with the Committee by requesting interpretations, proposing revisions, and attending Committee meetings.
Correspondence should be addressed to Secretary, PTC Revisions are made periodically to the Code to incorporate changes that appear necessary or desirable, as demonstrated by the experience gained from the application of the Code.
Approved revisions will be published periodically. The Committee welcomes proposals for revisions to this Code. Such proposals should be as specific 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 when justified, to permit early implementation of an approved revision when the need is urgent, or to provide rules not covered by existing provisions. The request should identify the Code, the paragraph, figure or table number sand be written as a Question and Reply in the same format as existing Cases. Requests for Cases should also indicate the applicable edition s of the Code to which the proposed Case applies.
Upon request, the PTC Interpretations can only be rendered in response to a written request sent 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. Cite the applicable edition of the Code for which the interpretation is being requested.
Phrase the question as a request for an interpretation of a specific requirement suitable for general understanding and use, not as a request for an approval of a proprietary design or situation. The inquirer may also include any plans or drawings that are necessary to explain the question; however, they should not contain proprietary names or information.
Requests that are not in this format will be rewritten in this format by the Committee prior to being answered, which may inadvertently change the intent of the original request. ASME procedures provide for reconsideration of any interpretation when or if additional information that might affect an interpretation is available. Persons wishing to attend any meeting should contact the Secretary of the PTC This Code provides explicit test procedures to yield results of the highest levels of accuracy consistent with the best engineering knowledge taking into account test costs and the value of the information obtained from testing and practice currently available.
This Code pro- vides rules for conducting acceptance tests. It also pro- vides guidelines for monitoring thermal performance and conducting routine tests. The tests can be used to determine compliance with contractual 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 procedures comply with those stipulated in this Code and the post- test uncertainty analysis results are in accordance with subsection This steam flow capability may be alternatively expressed as a deviation from design flow capability, a deviation from design turbine backpressure, or as the absolute value of the steam tur- bine backpressure.
This Code also provides procedures for assessing compliance to specified dissolved oxygen and specified condensate temperature. This Code does not 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 condensers 1 f air-cooled condensers with inlet air conditioning in-service The determination of special data or verification of guarantees that are outside the scope of this Code shall be made only with the written agreement of the parties to the test.
ASME PTC 30.1-2007.pdf
The agreed methods of measurement and computation shall be defined in writing and fully described in the test report. Any departure from Code requirements could introduce additional uncertainty beyond that considered acceptable to meet the objectives of the Code.
The application of uncertainties to adjust test results is not part of this Code; the test results themselves pro- vide the best indication of actual performance.
The uncertainty is used to determine the quality of the test and reflects the accuracy of the test instrumentation and stability of the test conditions. Test tolerance, margin, and allowance are commercial matters that are not addressed by this Code. The maximum uncertainties shown below are lim- its — not targets.
A Code precept is to design a test for the highest practical level of accuracy based on current engineering knowledge. For a commercial test, this phi- losophy is in the best interest of all parties to the test.