ML19289E914

LER 79-016/03L-0 on 790421:one of Eight Main Steam Safety Valves Tested Found Out of Tolerence in Conservative Direction.Caused by Difference in Ambient Conditions Between Time When Valve Last Reset & Time of Test

ML19289E914
Person / Time
Site:	Calvert Cliffs
Issue date:	05/17/1979
From:	Carroll J, Miernicki J BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19289E910	List: ML19289E909 ML19289E914
References
LER-79-016-03L, LER-79-16-3L, NUDOCS 7905290430
Download: ML19289E914 (2)

Text

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DOCKET N0. 50-317 LER N0. 79-16/3L EVENT DATE 04/21/79 REPORT DATE 05/17/79 ATTACHVENT CAUSE DESCRIPTION AND CORRECTIVE ACTIONS:

One out of eight main steam safety valves tested was found out of tolerance in the conservative direction. This out of tolerance is attributed to a difference in ambient conditions between the time this valve was last reset and the time of this test. The valves were last reset during a startuo followinc a cold shutdown and therefore the room and eauicment had not yet reached steady state operatino temperatures. This current test was conducted with the rocm and equicments at ambient ooerating temperatures. All future testing and resetting of these valves will be done under these condi tions .

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