ML20134E520
| ML20134E520 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 08/07/1985 |
| From: | Russell L BALTIMORE GAS & ELECTRIC CO. |
| To: | Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20134E512 | List: |
| References | |
| NUDOCS 8508200302 | |
| Download: ML20134E520 (2) | |
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B ALTIMORE G AS AND ELECTRIC COMPANY P.O. BO X 14 7 5 B A LTI M O R E. M A R Y L A N D 21203 C LVERT CL FF5 NUCLEAR POWER PLANT LUSBY. MARYLAND 20657 i
August 7,1985 Dr. Thomas E. Murley Regional Administrator U. S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 19406
SUBJECT:
Calvert Cliffs Nuclear Power Plant Unit 1 Wide Range Noble Gas Effluent Monitor Inoperable
Dear Dr. Murley:
On March 5,1985, the Main Vent Wide Range Noble Gas (WRNGM) Effluent Monitor was declared inoperable and Action Statement 3.3.3.1b entered, consistent with the recently received Technical Specifications for this System.
The action required by 3.3.3.1b, if the System operability cannot be restored in seven days, is to prepare and submit a Special Report to the Commission pursuant to Specification 6.9.2. That report was submitted to you on April 4,1985.
As stated in the report, the reason for the inoperability was a failed GA Technologies RM-23 keyboard module which is used to control radiation detection sensors and to process and store signals. This module was returned to GA Technologies for repair.
The module was returned to Calvert Cliffs by~ GA Technologies and installed in the system. The system still would not function and the manufacturer was requested to send a representative to the plant to effect on-site repairs. Th'e repairs were completed on July 23,1985.
8508200302 85000s PDR ADOCM 05000317 S
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s, Dr. Thomas E. Murley U. S. Nuclear Regulatory Commission August 7,1985 Presently the system is undergoing testing and will be declared operable once the testing is completed. Therefore, the preplanned alternate method of monitoring is stillin effect and is covered in Calvert Cliffs Emergency Response Plan Implementation Procedurc (ERPIP) No. 4.4.3/Rev. 8,
Title:
Initial Determination of Accident Radioactivity Release Rates.
Sincerely, LR L. B. Russell Plant Superintendent LBR/pah ec:
Director, Office Management Information and Program Control Mr. A. E. Lundvall Mr. J. A. Tiernan 4