ML19259A709

LER 78-048/03L-0 on 781213:22B Safety Injection Tank (SIT) Pressure Was Less than 200 Psig Required by Tech Spec.3 Redundant SITs Remained Operable.Caused by Minor Valve Leakage.Corrective Action:Tank Repressurized

ML19259A709
Person / Time
Site:	Calvert Cliffs
Issue date:	01/04/1979
From:	Davis S BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19259A707	List: ML19259A706 ML19259A709
References
LER-78-048-03L, NUDOCS 7901100175
Download: ML19259A709 (1)

Text

NRC FORPA 366 U.S. NUCLEAR REGULATORY COMMISSION (7 77) '

LICENSEE EVENT REPORT CONTROL BLOCK:

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80 7 8 EVENT CESCRIPTION AND PROBABLE CONSEQUENCES h O 2 1 At 0800 the operator noticed that 22B safety injection tank (SIT) pressure i O 3 was less than 200 psig as required by T.S. 3.5.1.d. 22B SIT was repressur- l 0 A l12ed to greater than 200 psig at 0850. The ti'.ree redundant SITS remained I o s operable during the event. This is not a repetitive occurrence. 1 O 6 l l 0 7 l l 0 8 l l E CODE SUSC E COMPONENT CODE SUSCODE S E O 9 8

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4 47 CAUSE DESCRIPTICN AND CORRECTIVE ACTIONS 27 E 1228 SIT pressure decreased due to minor valve leakage. The' corrective action i i i lwas to repressurize the tank to greater than 200 osio, Corrective action to i 2 lprevent recurrence will be to caution operators as to the importance of main-

'g Itaining setpoints near their midpoints rather than at their limits.

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