ML20133N047

Proposed Tech Specs 4.4 Re Containment Testing

ML20133N047
Person / Time
Site:	Maine Yankee
Issue date:	01/15/1997
From:	Maine Yankee
To:
Shared Package
ML20133N037	List: ML20133N035 ML20133N047
References
NUDOCS 9701230140
Download: ML20133N047 (3)

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ATTACHMENT _A k

Proposed _ Change _No m200..._ Supplement _No. I j t

j Proposed _TechnicaLSpecif.ication1. ages _4J Land _4A 2 i l

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9701230140 DR 970115 p ADOCK 05000309 PDR

j 4.4 CONTAINMENT TESTING i

Appl.icabil.ity: Applies to containment leakage testing.

Objective: To verify that containment leakage conforms to specified limits.

Specif.ication:

I. Type _A_ Integrated _ Containment _ Leakage _ Rate _ Tests l

1. All Typa A containment tests will be performed in accordance with the provisions of 10CFR50.54(o), 10CFR50, A ndix J, O tion B, as modified by approved exemptions, and R latory Gu de 1.163, i

" Performance Based Containment Leak Test Program," dated i September 1995.

2. Testing will be performed using the absolute method of calculating the mass of air within the containment and its rate of loss with time.

l 3. The following terms appearing in 10CFR50, Appendix J, Option B, are applicable for this specification:

a. (psig) - the calculated peak containment internal P.

re lated to the design basis loss of coolant accident, 50pressure s g.

(P will be conservatively assumed to be equal he containment design pressure (55 psig) for the purposes of containment testing in accordance with this Technical  ;

Specification. )

b. L (percent /24 hours) the maximum allowable leakage rate at pressure P , 0.10 weight percent per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

II. Types.B_and_C_ Containment _Leaka?1 Rate _ Tests

1. Type B containment leakage rate tests will be performed in accordance with the provisions of 10CFR50.54(o), 10CFR50, Ap endix J. O tion B, as modified approved exemptions, and Re ulatory Gui e 1.163, " Performance asec Containment Leak-Test Program," dated September 1995.

Amendment No. 38. 82.

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'.i 2. Type C containment leakage rate tests will be performed in i accordance with the provisions o f -. 10CFR50.54(o), 10CFR50, Appendix J Option B, as modified by approved exemptions, and i Regulatory Guide 1.163, " Performance Based Containment Leak-Test Program," dated September 1995.

l l 3. The Type B air lock tests will be performed in accordance with the

provisions of 10CFR50.54(o), 10CFR50, Ap ndix J. Option B, as

! modified by approved exemptions, and R79ulatory Guide 1.163, i " Performance Based Containment Leak Test Program," dated September.

L 1995, at a test pressure of not less than 55 psig. The allowable ~

! leak rate for the air lock test is 0.05 L,.

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! 4. Containment purge supply, exhaust and bypass valve testing requirements for on line purging are as folicws:

a. The containment purge su) ply, exhaust and bypass valves will be leak tested within 2L hours following the termination of on line purge, exceot when the valves are being used for multiple cyclings, toen at least-once per 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />,

b. The containment purge supply, exhaust and bypass valves will be leak tested at six month intervals.

Basis 4

A leakage rate value of 0.10 weight percent per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> will, under the most adverse design basis accident conditions, maintain public ex CFR 100 values in the event of the hypothetical accident. posure well below 10  ;

I The air lock leak test is a measure of the operability of the air lock, however, .

the air lock is still considered to be operable in-the event of exceeding air i lock leak test acceptance criteria as long as one hatch is determined to be properly closed and sealed in accordance with Technical Specification 311 and total containment leakage from all penetrations and isolation valves (ir,.luding  ;

the air lock) has been evaluated to be within l 0.6 L,.

, -The seal is determined to be operable by an appropriate pressure test.  :

Amendment No. 38, 72. 82. 91.

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