ML20024G259

Proposed Tech Specs Re Containment Integrated Leak Rate Tests

ML20024G259
Person / Time
Site:	Monticello
Issue date:	09/02/1977
From:	NORTHERN STATES POWER CO.
To:
Shared Package
ML20024G250	List: ML20024G249 ML20024G253 ML20024G259
References
NUDOCS 9102080432
Download: ML20024G259 (2)

Text

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1 License Amendment Request Dated September 2, 1977 This exhibit Technical consists ofchsnges:

Specification the following pages revised to incorporate the proposed y -;

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3.0 LIMITING CONDITIONS FOR OPERATION h.0 SURVEILLANCE REQUIRDEIES (3) ence, prior to and after repair shall be added to the final integrated Icak rate result.

(4) Closure of the containment isolation valves for the purpose of the test shall be accomplished by the means provided for normal operation of the valves.

(5) Test duration shall be at least eight hours and shall include at least 20 sets of data taken at approximately equal time intervals. In addition, the test shall have a duration sufficiently long l to accumulate and analyze enough data to verify .

j that the measured leakage rate, at the 957.

confidence level, is less than the acceptance criterion contained in Specification 4.7.A.2(b)(2).

l (6) Each test shall be inanediately followed by a veri-fication test using a known superimposed leak in accordance with Appendix C to ANSI N45.4 -1972. (

The verification test shall have a duration suf ficiently long to acetamulate and analyze enough data to verify that at the 957. confidence level the measured composite leakage lies within 0.25La of the sum of the superimposed leak rate and the measured overall contairmoent leak rate.

(b) Acceptance Criteria for IPCLT (1) The maximum allowable leak rate Lt shall not exceed 1.2 weight percent of the contained air

, per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> at the test pressure of 41 psig (Pt ).

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U.S. NUcLEA A REGULATC 2

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e NRdplSTRJBUTION Pon PART 50 DOCKET MATERIAL OI ' Mr. Victor Stello

• NSP 09/0 / 7 Minneapolis, Minnesota 55401 L. O. Mayer Wh5}ff'V'O i PROP INPUT PORM NUMgEM QP OCPtES RECElVgg

)(ETTan ONOTORIZED G6:138HAL dNcLAssirit o Ocoev g gff,gpb zSamirTioN ENCLOSumE consists of License No. DPR-22 Appl for Amend: tech specs proposed char.ge concerning '

a gngj - revising current tech specs to pemit contain-

\lfyr YdI g\ s LIVIU y ; ment integrated leak rate tests to be terminated in less than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />...Notorized 09/02/77...

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.ACKN0%d 7FLANT NAME: MONTICELLO jcm 09/09/77

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