ML20010H575

Application for Tech Spec Change,Increasing Insp Frequency of Reactor Bldg Purge Valves

ML20010H575
Person / Time
Site:	Arkansas Nuclear
Issue date:	09/17/1981
From:	ARKANSAS POWER & LIGHT CO.
To:
Shared Package
ML20010H574	List: ML20010H573 ML20010H575
References
NUDOCS 8109250264
Download: ML20010H575 (1)

Text

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4.26 REACTOR BUILDING PURGE VALVES APPLICABILITY This specification applies to the reactor buildir.g purge supply and exhaust isolation valves.  !

OBJECTIVE To assure reactor building integrity.

SPECIFICATION 4 26.1 The reactor building purge supply and exhaust isolation valves shall be determined closed. At least once per 31 days when containment integrity is required by TS 3.6.1.

4.26.2 Prior to exceeding conditions which require establishment of reactor building integrity per TS 3.6.1, the leak rate of the purge supply and exhaust isolation valves shall be verified to be within acceptable limits per TS 4.4.1, uniest +.he test. has been succes,sfully compicced within the last six months.

BASES Determinauon of reactor building purge valve closure will ensure that reactor building integrity is not unintentionally breeched.

Generic Issue B-20, "Co,tainment Leakage Due to Seal Deterioration" determined that excess leakage past valve resilient seals is typically caused by severe environmental conditions and/or wear due to use.

Recommended leik test frequencies of six months are deemed to be adequate to detect seal segradation of resilient seals.

The six month test need not be conducted with the precision of the Type C 10CFR50, Appendix J criteria, however the test must be sufficient to detect degradation.

8109250264 810917 PDR ADOCK 05000313 p PDR

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