ML20236K363
| ML20236K363 | |
| Person / Time | |
|---|---|
| Site: | Braidwood  |
| Issue date: | 06/26/1987 |
| From: | Hunsader S COMMONWEALTH EDISON CO. |
| To: | Davis A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 3265K, NUDOCS 8708070092 | |
| Download: ML20236K363 (2) | |
Text
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(.__,2 AFdIess Reply to: Post Office Box 767
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June 26, 1987
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Mr. A. Bert Davis Regional Administrator U.S. Nuclear Regulatory Commission bD Region III 799 Roosevelt Road Glen Ellyn, IL 60137
Subject:
Braidwood Station Unit 1 Interim Operation of VA System NRC Docket No. 50-456
Reference:
(a) June 11, 1987 S. C. Hunsader letter to T. E. Murley
Dear Mr. Davis:
Reference (a) provided Braidwood Procedure BWVP 200-1077, Revision 0 the method of leak testing potentially radioactive systems outside of containment and obtaining an accumulated total leakage.
The purpose of this letter is to provide an explanation of how Braidwood will implement this Leakage Monitoring Program. The following actions will be taken; a)
Prior to exceeding 20% Rated Thermal Power (RTP), Braidwood will establish a baseline leakage rate for ECCS subsystems in accordance with procedure BWP 200-1077.
b)
Braidwood will stagger its ASME pump surveillance and the coincident execution of BWP 200-1077 throughout the requisite quarterly interval. This will result in a different ECCS train having its leakage quantified at approximately 2-3 week intervals.
This leakage will be used to calculate an updated overall leakage value.
c)
While Unit 1 is above 20%,RTP, the accessible ECCS components susceptible to leakage (valve packings, pump seals, etc.) which are located outside containment will be monitored on a monthly basis.
This will be a qualitative assessment for the purpose of detecting gross variances in previously quantified leakage rates.
8708070092 870626 I
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l A. B. Drvis June 26, 1987 These actions have been discussed with Region III personnel and it is our understanding that this method of implementation is acceptable.
Please address any questions concerning this matter to this office.
Very truly yours,
. C.
s S. C. Hunsader Nuclear Licensing Administrator bs cc:
J. Stevens - NRR Resident Inspector - BW W. Little - RIII 3265K I
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