ML19350F093
| ML19350F093 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs, 050317P  |
| Issue date: | 06/15/1981 |
| From: | Russell L BALTIMORE GAS & ELECTRIC CO. |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| NUDOCS 8106240206 | |
| Download: ML19350F093 (1) | |
Text
LO I
B ALTIMORE G AS AND ELECTRIC COMPANY PO.DOX 1475 E
D a t.T l 6* O R C. sA A R Y L A N D 212 0 3 I
O V
g j
NVCLE A R POWE R DEPA Ritet MT j
CaLvant cter F5 *UCLga n eper m PL aw?
2 3 us. a <ta o "*"
k
'h 6
June 15,1981 V/
~
g Mr. Boyce H. Crier, Director Docket No.30-317 Of fice of inspection and Enf orcement License No. DPR-53 U.S. Nuclear Regulatory Commission Region 1 631 Park Avenue King of Prussia, PA 19406 5UR.1ECT: t_ER 81 41 (tJ-1)
Dear Mr. Grier:
This letter is to confirm our verbal notification of your Mr. Ralph Architzel as required by Technical Specification 6.9.l.8.b, Prompt Notification with Written Follow-up, of an isolated ref ueling water tank level switch.
At 1530 on 06-12-81, while conducting a routine plant inspection, the NRC Resident inspector discovered 1-LS 4142-C (ref ueling water tank low to RAS) isolated.
1-LS-4142-C provides a signal to Engineering Safety Features Actuation System (ESFAS)
Channel "C" to switch the emergency core cooling system from the injection mode to the recirculation mode. Uoon discovery, instruement & Control personnel verified the level switch operable by performing the applicable portion of Surveillance Test STP-M-220-1.
The level switch was returned to service at 1823. The three (3) redundant level switches remained operable throughout the event.
A complete description of the cause and corrective actions will be contained in the iollow-up report.
Very truly yours, h
l L. B. Russeli Plant Superintendent LBR:mmr l
cc:
J. A. Tiernan i0 R. M. Douc, lass Director, Of fice of Managernent Information and Program Control R. E. Architzel 0
W i
8106 24 0e o e hw 6