ML20236D224

Forwards Exemption from Certain Requirements of App J to 10CFR50 Per 870710 Request to Allow Use of Mass Point Method as Provided in Ansi/Ans 56.8-1981 to Calculate Leakage & Safety Evaluation

ML20236D224
Person / Time
Site:	Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date:	10/15/1987
From:	Frank Akstulewicz Office of Nuclear Reactor Regulation
To:	Mroczka E CONNECTICUT YANKEE ATOMIC POWER CO.
Shared Package
ML20236D226	List: ML20236D224 ML20236D235 ML20236D242
References
NUDOCS 8710280076
Download: ML20236D224 (2)

Text

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I. October 15, 1987 Docket-No.: 50-213 DISTRIBUTION: MShuttleworth l Docket.Filesc 97 MBoyle 1

ISAPD" File" ' OGC-Bethesda Mr. Edward J. Mroczka, Senior Vice President NRC PDR EJordan.

Nuclear Engineering and Operations Local PDR JPartlow I Connecticut Yankee Atomic Power Company TMurley/JSniezek NThompson Post Office Box 270 Glainas TBarnhart(4)

Hartford, Connecticut 06141-0270 ERossi ACRS(10)

DCrutchfield OPA

Dear Mr. Mroczka:

ORAS LFMB FSchroeder

SUBJECT:

EXEMPTION FROM THE-REQUIREMENTS OF APPENDIX J TO 10 CFR PART 50, PARAGRAPH III.A.3 Re: Haddam Neck Plant The Commission has issued an exemption from certain requirements of Appendix J to 10 CFR Part 50 in response to your letter dated July 10, 1987. The exemp-tion pertains to certain requirements of 10 CFR Part 50, Appendix J, " Primary

. Reactor Containment Leakage Testing for Water-Cooled Power Reactors," for all Type A (Containment Integrated Leakage Rate) tests to be performed in accordance with the provisions of the American National Standard (ANSI) N45.4-1972, " Leakage Rate Testing of Containment Structures for Nuclear Reactors," March 16, 1972.

This standard requires that containment leakage rate calculations be performed using either the Point-to-Point method or the Total Time method.

In your letter dated July 10, 1987, you requested an exemption to allow use of the Mass Point method (as provided in ANSI /ANS 56.8-1981). The Commission grants the enclosed exemption to use the Mass Point method for calculating containment leakage, with the explicit condition that such tests be conducted with 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 />. The exemption is granted until

~Section III.A.3 of Appendix J is modified. The exemption applies only to the method of calculating leakage by use of the Mass Point method and not to any other aspects of the tests. A copy of our related Safety Evaluation is enclosed.

The Exemption is being forwarded to the Office of the Federal Register for publication.

Sincerely, original signed by Francis M. Akstulewicz, Jr.

87102Bg g 87101533000213 Integrated Safety Assessment A PDR Project Directorate FfDR Division of Reactor Projects III/IV/V and Special Projects cc w/ enclosure See next page

• See previous concurrence g 0FC :ISAPD* ISAPD* ISAPD* SPLB* 0GC-Beth* A d (P 5:

NAME :MShuttleworth FAkstulewicz C0 Thomas JCraig FSch bderDC eld 08/21/87 09/12/87 87 DATE :08/21/87 08/20/87 09/21/87 09 g 7 09

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Mr. Edward J. Mroczka Haddam Neck Plant Connecticut Yankee Atomic Power Company cc: Gerald Garfield, Esquire Kevin McCarthy, Director Day, Berry & Howard Radiation Control Unit Counselors at Law Department of Environmental City Place Protection Hartford, Connecticut- 06103-3499 State Office Building Hartford, Connecticut 06106 Superintendent Richard M. Xacich, Manager Haddam Neck Plant Generation Facilities Licensing RF0 #1 d Post Office Box 127E Northeast Utilities Service Company Post Office Box 270 j East Hampton, Connecticut 06424 Hartford, Connecticut 06141-0270 3 i

Wayne D. Romberg Donald 0. Nordquist, Director I Vice President, Nuclear Operations Quality Services Department Northeast Utilities Service Company Northeast Utilities Service Department Post Office Box 270 (

Post Office Box 270 Hartford, Connecticut 06141-0270 Hartford, Connecticut 06141-0270 i

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Board of Selectmen j Town Hall '

Haddam, Connecticut 05103 Bradford S. Chase, Under Secretary '

Energy Division Office of Policy and Management 80 Washington Street Hartford, Connecticut 06106 Resident Inspector l Haddam Neck Nuclear Power Station c/o U.S. NRC P. O. Box 116 '

East Haddam Post Office East Haddam, Connecticut 06423 I Regional Administrator, Region I U.S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 19406 I l

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