ML20063L013
| ML20063L013 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 09/01/1982 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8209080591 | |
| Download: ML20063L013 (2) | |
Text
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TENNESSEE VALLEY AUTHORITY ci4kTYINbOGA. TENNESSEE 374ol 400 Chestnut Street Tower II
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(' c o A $': 49 September 1, 1982 BLRD-50-438/82-54 BLRD-50-439/82-48 U.S. Nuclear Regulatory Commission Region II Attn:
Mr. James P. O'Reilly, Regional Administrator 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - VENTING OF HIGH POINTS IN THE ESSENTIAL RAW COOLING WATER SYSTEM - BLRD-50-438/82-54, BLRD-50-439/82 FIRST INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector R. V. Crlenjak on August 2, 1982 in accordance with 10 CFR 50.55(e) as NCR BLN QAB 8203 Enclosed is our first interim report. We expect to submit our next report by November 1, 1982.
If you have any questions concerning this matter, please get in touch with R. H. Shell at FTS 858-2688.
Very truly yours, TENNESSEE VALLEY AUTHORITY L. M. Mills, Manager Nuclear Licensing Enclosure oc:
Mr. Richard C. DeYoung, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.
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PDR An Equal Opportunity Employer
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ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 VENTING OF HIGH POINTS IN THE ESSENTIAL RAW COOLING WATER SYSTEM NCR BLN QAB 8203 BLRD-50-438/82-54, BLRD-50-439/82-48 10 CFR 50.55(e)
FIRST INTERIM REPORT L
Description of Deficiency Air vents are provided at high points of piping systems to purge air entrapped during initial filling, operation, or following maintenance functions. Manual vents are generally acceptable; however, TVA has determined that air will come out of solution due to heating in several safety-related coolers supplied with essential raw cooling water under accident conditions. Since access is restricted under such conditions, the manual vents would be unsuitable for these applications.
TVA design criteria failed to provide for automatic venting in the component cooling water heat exchanger, the diesel generator heat exchanger, and the component cooling pump room air-handling units.
The cause of this deficiency is incomplete consideration of all design bases during the production of design criteria.
Interim Progress TVA is still evaluating the subject deficiency. Further details will be provided in our final report.
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