ML20035A194
| ML20035A194 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 03/17/1993 |
| From: | Mcdonald D Office of Nuclear Reactor Regulation |
| To: | Denton R BALTIMORE GAS & ELECTRIC CO. |
| References | |
| IEB-90-001, IEB-90-1, TAC-M85369, TAC-M85370, NUDOCS 9303240260 | |
| Download: ML20035A194 (4) | |
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UNITED STATES j-
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WASWNGTON, D.C. 2056H001 -
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March 17, 1993 Docket Nos. 50-317 and 50-318 Mr. Robert. E. Denton Vice President - Nuclear Energy Baltimore Gas & Electric Company Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, Maryland 20657-4702
Dear Mr. Denton:
SUBJECT:
NRC BULLETIN 90-01, SUPPLEMENT 1, " LOSS OF FILL OIL IN TRANSMITTERS MANUFACTURED BY ROSEMOUNT" - CALVERT CLIFFS NUCLEAR POWER PLANT, UNIT NOS. 1 AND 2 (TAC NOS. M85369 AND M85370)
By letter dated March 4,1993, Baltimore Gas and Electric Company (BG&E) responded to NRC Bulletin 90-01, Supplement 1.
The response also referenced the previous responses to the initial bulletin, which were letters dated July 17, 1990, December 20, 1990, and April 29, 1992.
The response to Supplement 1 of the bulletin indicates that all Rosemount pre:sure and differential' pressure transmitters Model 1153 Series B, Model 1153 Series D, and Model 1154 manufactured prior to July 11, 1989, and which perform safety-related or anticipated transients without scram (ATWS) functions will be rep 1 aced.
Bulletin transmitters whose only safety function is that of a pressure boundry have been excluded. The replacement will involve 24 Unit I transmitters, 23 Unit 2 transmitters, and 2_ transmitters which are common to both units.
BG&E has chosen to replace the Bulletin transmitters, rather than the option provided in the supplement, which is to implement' an enhanced surveillance monitoring program.
It is further indicated that all Unit'1.Rosemount-transmitters and all Rosemount transmitters common' to both units were replaced -
as of August 31, 1992, with transmitters manufactured after July 11, 1989.
The remaining 23 Unit 2 Rosemount transmitters are in the process of_being replaced during the current Unit 2 refueling outage number 9:(RF0-9).
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e Mr. Robert E. Denton March 17, 1993 Based on the above, we have completed all actions related to TAC No. M85369 for Unit I and will close the TAC. TAC No. M85370 for Unit 2 will remain open until BG&E informs the Commission that the remaining 23 transmitters in Unit 2 have been replaced during RFO-9.
Sincerely, h
Daniel G. Mcdonald, Senior Project Manager Project Directorate I-l Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation cc:
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Mr. Robert E. Denton Calvert Cliffs Nuclear Power Plant Baltimore Gas & Electric Company Unit Nos. I and 2 CC:
L Mr. Michael Moore, President Mr. Joseph H. Walter Calvert County Board of Engineering Division Commissioners Public Service Commission of 175 Main Street Maryland Prince Frederick, Maryland 20678 American Building 231 E. Baltimore Street D. A. Brune, Esquire Baltimore, Maryland 21202-3486 General Counsel Baltimore Gas and Electric Company Kristen A. Burger, Esquire P. O. Box 1475 Maryland People's Counsel Baltimore, Maryland 21203 American Building, 9th Floor 231 E. Baltimore Street Jay E. Silberg, Esquire Baltimore, Maryland 21202 Shaw, Pittman, Potts and Trowbridge 2300 N Street, NW Patricia T. Birnie, Esquire Washington, DC 20037 Co-Director Maryland Safe Energy Coalition Mr. G. L. Detter, Director, NRM P. O. Box 33111 Calvert Cliffs Nuclear Power Plant Baltimore, Maryland 21218 1650 Calvert Cliffs Parkway Lusby, Maryland 20657-47027 Resident Inspector c/o U.S. Nuclear Regulatory Commission P. O. Box 287 St. Leonard, Maryland 20685 Mr. Richard I. McLean Administrator - Radioecology Department of Natural Resources 580 Taylor Avenue Tawes State Office Building B3 Annapolis, Maryland 21401 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, Pennsylvania 19406 j
I Mr. Robert E. Denton March 17, 1993 Based on the above, we have completed all actions related to TAC No. M85369 l
for Unit I and will close the TAC. TAC No. M85370 for Unit 2 will remain open until BG&E informs the Commission that the remaining 23 transmitters in Unit 2 have been replaced during RF0-9.
Sincerely, i
Original signed by:
Daniel G. Mcdonald, Senior Project Manager Project Directorate I-l i
Division of Reactor Projects - I/II j
Office of Nuclear Reactor Regulation cc: See next page DISTRIBUTION:
-Docket File-NRC & Local 'PDRs PDI-l Reading SVarga JCalvo-I RACapra i
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PDI-1:D NAME CVogan &
DMcDonald: avl JWerNiel RACapra DATE 3 /16 /93 of / t(/93 3 /1 7/93 3/0/93
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FILENAME:CC85369.LTR i
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