ML20150E390

Comment Opposing Proposed Rule 10CFR50 Re Mass Point Analysis.Proposed Rule Contrary to Ansi/Ans 56.8-1987 & General Rev of App J Specifying 24 H Min Test Duration When Using Mass Point Analysis May Prompt Needless Exemptions

ML20150E390
Person / Time
Site:	Seabrook
Issue date:	03/23/1988
From:	Connolly J PUBLIC SERVICE CO. OF NEW HAMPSHIRE
To:	NRC OFFICE OF THE SECRETARY (SECY)
References
FRN-53FR5985, RULE-PR-50 53FR5985-00003, 53FR5985-3, NUDOCS 8803310210
Download: ML20150E390 (1)

Text

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DOCKET NUMBER p g W 8d PROPOSED RULE 0.1 &#598) "*

James W. Connolly g m g g g, Seabrook Station gg P6 :18 P. O. Box 300 N:w Hampshire Yankee Division Seabrook, NH 03874 March 23, 1988 rp;iifc DOCn . pyy IT A Na Secretary United States Nuclear Regulatory Commission Washington, D. C. 20555 ATTENTION: DOCKETING AND SERVICE BRANCH

Dear Sir:

New Hampshire Yankee (NHY), a division of Public Service of New Hampshire (PSNH), appreciates this opportunity to comment on the proposed rule Vol. 53, regarding 10 CFR 50 Appendix J published in the Federal Register, No. 39, on Monday February 29, 1488. PSNH is the agent and rep 6esentative of joint owners of Seabrook Station in Seabrook, New Hampshire.

The proposed rule, as specified, appears to be contrary with ANSI /ANS 56.8-1987 and a proposed general revision of Appendix J published in the Federal kegister, Vol. 51, No. 209, on Wednesday October 29, 1986 in the area of ILRT test duration when using the Mass Point Analysis technique.

Neither ANSI 56.S-1987 nor the proposed general revision of Appendix J spe-cify a minimum test duration of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Furthermore, requiring a minimum test duration of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> when using the Mass Point Analysis technique appears to be without basis since ANSI /ANS 56.8-1987 requires (in Section 5.4) tnst "the duration of the test period must be sufficient to enable a adequate data to be accumulated and statistically analyzed so that feakage rate and upper confidence limit can be accurately determined".

The intent of the proposed rule change to codify the acceptability of the Mass Point Analysis Technique appears to be well intended and will relieve the industry of large amounts of regulatory uncertainty, Past testing experience throughout the industry has shown that adequate data can be accumulated and sta-tistically analyzed in test periods less than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> and has been recognized Requiring a minimum test duration in the revised standard ANSI /ANS 56.8-1987.

of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> when using the Mass Point Analysis technique may also produce many needless requests for exemption from this requirement.

Respectfully,  ;

64tVJ4 th. M

) , ,_ h9 g/I 2 ~ . W. Connolly jS 'f l

Test Engineer

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h33 1 G90323 50 53FRS985 DCD . 300 . Seabrook, NH 03374 . Telephone (603) 474 9574