ML20009D520
| ML20009D520 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 07/14/1981 |
| From: | Lundvall A BALTIMORE GAS & ELECTRIC CO. |
| To: | Eisenhut D Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-2.K.3.02, TASK-TM NUDOCS 8107240140 | |
| Download: ML20009D520 (1) | |
Text
.. .
BALTIMOR E GAS AND ELECTRIC i
CHARLES CENTER P. O. BOX 1475 BALTIMORE, MARYLAND 21203 ARTHUR E. LUNOVALL, JR.
VICE PREWDhNT SUPPLY Office of Nuclear Reactor Regulation p ,
U. S. Nuclear Regulatory Commission 9h Washington, D. C. 20555 4
-Attn: Mr. D. G. Eisenhut, Director 'Of Division of Licensing @g\
Subject:
Calvert Cliffs Nuclear Power Plant 4 Units Nos. 1 & 2, Dockets Nos. 50-317 & v1 '/
Response to NUREG-0737 Item II.K.3.2 % -
Reference:
(a) Letter from A. E. Lundvall, Jr. to -
/
D. G. Eisenhut dated February 20, 1981.
Gentlemen:
Reference (a) forwarded CEN-lh5, PORV Failure Reduction Methods. This report requires correction.
On page 8, the total nunber of MSSV demands is incorrectly reported to be 5650. The actual number is h650 demands (the sum of 2070_ MSSV test demands and 2580 operational demands). This also changes the failure rate from 1.2hx10-3 to 1.5x10-3 per demand.
The conclusion of the report, that the failure rate is lover than the value of 2x10-2 per demand estimated in NUREG-0560, remains valid.
Very truly yours, A. E. Lundvall, J .
Vice President-Supply cc: J. A. Biddison, Esquire G. F. Trowbridge, Ecqui g/
i Messrs. E. L. Conner, Jr. - NRC -
O 'T b R. E. Architzel - NRC Resident Inspector 5
IO 0107240140 810714 PDR-ADOCK 05000 P
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