ML20010F746

LER 81-132/03L-0:on 810806,unidentified Leakage Exceeding 1 Gpm Was Identified During Testing of RCS Water Inventory Balance.Caused by Several Vent & Drain Valves on RCS Leaking.Valves & Pipe Caps Tightened Down

ML20010F746
Person / Time
Site:	McGuire
Issue date:	09/02/1981
From:	Nardoci P DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20010F744	List: ML20010F743 ML20010F746
References
LER-81-132-03L, LER-81-132-3L, NUDOCS 8109110277
Download: ML20010F746 (1)

Text

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i a i 2 4 I While in Mode 3, performance of a reactor coolant system water inventory bal- ,

,,,3 gance by a periodic test (reactor coolant leakag2 calculation) indicated that i2..i ithe unidentified leakage exceeded .1 GPM (1.154 GPM). This violates T.S.3.4.7.2,

,3,,, (which is reportable pursuant to T.S. 6.9.1.13(d). Since the leaks occurred in

! o e s ! f the reactor buildinc. the water would have gone to the containment sump and ,

93,,i 9 then be pumped to tanks in the plant waste systems for processing. Thus, the

, health and safety of the public were not affected.

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,,,,,;Sec{ral vent and drain valves on the reactor coolant system were discovered to,

, , ,be leaking. The leaking valves and their pipe caps were tightened down, and ,

g ,the reactor coolant leakage calculation was run successfully with the unidentiT i,.:6f fied leakage less than 1 GPM ( 0.741 GPM) .  ;

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