ANSI ASME OM INTERPRETATIONS-2013 Interpretations to OM-2015 Operation and Maintenance of Nuclear Power Plants (Includes Interpretations No 1).pdf
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1、ASME OM INTERPRETATIONSASME OM INTERPRETATIONS(FOR DIVISION 1)Replies to Technical InquiriesFebruary 12, 2013FOREWORDThis publication includes all of the written replies issued on the indicated date by the Secretary,speaking for the ASME Committee on Operation and Maintenance of Nuclear Power Plants
2、, toinquiries concerning interpretations of technical aspects of the ASME OM Code.These replies are taken verbatim from the original letters, except for a few typographicalcorrections and some minor editorial corrections made for the purpose of improved clarity.These interpretations were prepared in
3、 accordance with the accredited ASME procedures.ASME procedures provide for reconsideration of these interpretations when or if additionalinformation is available which the inquirer believes might affect the interpretation. Further,persons aggrieved by an interpretation may appeal to the cognizant A
4、SME Committee orSubcommittee. ASME does not “approve,” “certify,” “rate,” or “endorse” any item, construction,proprietary device, or activity.An interpretation applies to the edition or addenda stated in the interpretation itself, or, ifnone is stated, to the latest published edition at the time it
5、is issued. Subsequent revisions to therules may have superseded the reply.For detailed instructions on the preparation of technical inquiries, refer to Preparation ofTechnical Inquiries to the Committee on Operation and Maintenance of Nuclear Power Plants(p. v of ASME OM-2015).I-1INTENTIONALLY LEFT
6、BLANKI-2ASME OM INTERPRETATIONSInterpretation: 15-01Subject: ISTA-1100 and ISTC-1200 (1998 Edition Through 2009 Edition)Date Issued: February 12, 2013File: 10-1979Question (1): Is it a requirement of para. ISTA-1100 that the term “specific function” used insubpara. ISTA-1100(a) is only made in refer
7、ence to valves that have “active” function(s) as definedby para. ISTA-2000?Reply (1): No.Question (2): Is it a requirement of para. ISTC-1200 that a valve that is found to perform aspecific function in shutting down a reactor to the safe shutdown condition, in maintaining thesafe shutdown condition,
8、 or in mitigating the consequences of an accident, in a passive mannercannot be excluded from the requirements of Subsection ISTC?Reply (2): Yes.Question (3): Is it a requirement of para. ISTC-1200 that the statement, “The following areexcluded from this Subsection, provided that the valves are not
9、required to perform a specificfunction as described in para. ISTA-1100,” only applies to subparagraphs ISTC-1200(a),ISTC-1200(b), and ISTC-1200(c)?Reply (3): Yes.Question (4): Is it a requirement of paras. ISTA-1100, ISTC-1200, and ISTC-1300 that a valvethat performs a specific function in shutting
10、down a reactor to the safe shutdown condition, inmaintaining the safe shutdown condition, or in mitigating the consequences of an accident, in apassivemannerbecategorizedperpara.ISTC-1300aseither“CategoryA,passive”or“CategoryB,passive” and then be subject to the applicable inservice test requirement
11、s of Table ISTC-3500-1?Reply (4): Yes.Question (5): Is it a requirement of para. ISTC-3700 and Table ISTC-3500-1 that a valve thatperforms a specific function in shutting down a reactor to the safe shutdown condition, inmaintaining the safe shutdown condition, or in mitigating the consequences of an
12、 accident, in apassive manner, equipped with functioning/operable remote position indicators, be subject tothe requirements of para. ISTC-3700 as stipulated by Table ISTC-3500-1?Reply (5): Yes.I-3INTENTIONALLY LEFT BLANKI-4ASME OM INTERPRETATIONSASME OM INTERPRETATIONS(FOR DIVISION 1)Replies to Tech
13、nical InquiriesJune 7, 2011 Through April 18, 2012FOREWORDThis publication includes all of the written replies issued between the indicated dates bythe Secretary, speaking for the ASME Committee on Operation and Maintenance, to inquiriesconcerning interpretations of technical aspects of ASME OM Code
14、.These replies are taken verbatim from the original letters, except for a few typographicalcorrections and some minor editorial corrections made for the purpose of improved clarity.These interpretations were prepared in accordance with the accredited ASME procedures.ASME procedures provide for recon
15、sideration of these interpretations when or if additionalinformation is available which the inquirer believes might affect the interpretation. Further,persons aggrieved by this interpretation may appeal to the cognizant ASME Committee orSubcommittee. ASME does not “approve,” “certify,” “rate,” or “e
16、ndorse” any item, construction,proprietary device, or activity.An interpretation applies to the edition or addenda stated in the interpretation itself, or, ifnone is stated, to the latest published edition and addenda at the time it is issued. Subsequentrevisions to the rules may have superseded the
17、 reply.For detailed instructions on the preparation of technical inquiries, refer to Preparation ofTechnical Inquiries to the Committee on Operation and Maintenance of Nuclear Power Plants(p. v of ASME OM-2012).I-1INTENTIONALLY LEFT BLANKI-2ASME OM INTERPRETATIONSInterpretation: 12-01Subject: ISTC-4
18、.1 (ISTC-3700) and ISTC-4.2.3 (ISTC-3530), Obtrurator PositionDate Issued: June 7, 2011File: OMI 11-913Question (1): If it is practicable, is it arequirement of ISTC-4.1 (ISTC-3700) that local observationof valve operation be supplemented by other indications to verify obturator position?Reply (1):
19、No.Question (2): If remote indicating lights provide confirmation of changes in obturator position,is it a requirement of ISTC-4.2.3 (ISTC-3530) to also observe other evidence, such as changes insystem pressure, flow rate, level, or temperature, that reflects change of obturator position?Reply (2):
20、No.lnterpretation: 12-02Subject: ISTA-9220(b), Coversheet RequirementDate Issued: November 7, 2011File: OMI 09-1312Question: Is it a requirement of ISTA-9220(b) to have a coversheet attached to every singledocumented test record?Reply (1): No.Interpretation: 12-03Subject: Mandatory Appendix I, I-132
21、0(b)(2)Date Issued: December 22, 2011File: OMI 10-1096Question:WhenafullcomplementofreliefvalvesisreplacedusingtheprovisionsofI-1320(b)(2),does this satisfy the testing requirements of I-1320(a) with respect to the minimum required testinterval of 20% within a 24-mo period?Reply: Yes.Interpretation:
22、 12-04Subject: Mandatory Appendix I, Main Steam Relief ValveDate Issued: December 22, 2011File: OMI 10-1980Question: If a main steam relief valve is operated/controlled by a pilot valve and that pilotvalve, in addition to responding to manual inputs that results in the opening of the MSRV,functions
23、to automatically open the MSRV upon reaching the valves setpoint, can that pilot valvebe defined as an auxiliary actuating device?Reply: No.I-3ASME OM INTERPRETATIONSInterpretation: 12-05Subject: ISTC-5100, Valve Stroke Test PerformanceDate Issued: April 18, 2012File: OMI 10-1094Question: Is it a re
24、quirement of the 1998 Edition and addenda, paras. ISTC-5115, ISTC-5123,ISTC-5133, ISTC-5143, and ISTC-5153, that a valve with abnormal or erratic operation observedduring valve stroke testing performed per paras. ISTC-5113(a), ISTC-5121(a), ISTC-5131(a),ISTC-5141(a), and ISTC-5151(a) be declared ino
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