ML20076D733
| ML20076D733 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 05/18/1983 |
| 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 8305230551 | |
| Download: ML20076D733 (2) | |
Text
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TENNESSEE VALLEY AUTHORITY CHATTANOOGA. TENNESSEE 37401 400 Chestnut Street Tower II May 18, 1983 2:3 2x BLRD-50-438/82-33 d0
.' T BLRD-50-439/82-30 O$
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U.S. Nuclear Regulatory.Cosmaission ess y
Region II
.f az Attn: Mr. James P. O'Reilly, Regional Administrator By 101 Marietta Street,.NW, Suite 2900 ed Atlanta, Georgia 30303 5
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - LACK OF ENVIR0! MENTAL QUALIFICATION OF EQUIPMENT IN AUXILIARY BUILDING BECAUSE OF POTENTIAL FAILURE OF STARTUP AND RECIRCULATION SYSTEM - BLRD-50-438/82-33, BLRD-50-439/82 THIRD INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector R..V. Crlenjak on April 22, 1982 in accordance with 10 CFR 50.55(e) as NCR BLN NSB 8203. This was followed by our interim reports dated May 24, 1982 and January 27, 1983 Enclosed is our third interim report. We expect to submit-our next report by February 17, 1984.
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If you have ~any questions, please get in touch with R. H. Shell at FTS 858-2688.
Very truly yours,
~'
TENNESSEE VALLEY AUTHORITY
'L.
M. Mills, nager i
Nuclear Licensing i
Enclosure cc: Mr. Richard C. DeYoung, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission W
.. ashington,: D.C.
20555 i
Records Center (Enclosure)
Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 t
Atlanta, Georgia 30339
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8305230551 83051s OFFICTAL crpf i
PDR ADOCK 05000438 8
y An Equal Opportunity Employer
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ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 LACK OF ENVIRO! MENTAL QUALIFICATION OF EQUIPMENT IN AUXILIARY BUILDING l
BECAUSE OF POTENTIAL FAILURE OF STARTUP AND RECIRCULATION SYSTEM BLRD-50-438/82-33, BLRD-50-439/82-30 10 CFR 50.55(e)
NCR BLN NEB 8203 THIRD INTERIM REPORT Dc,scrg tion of Deficiency A pipe failure of the noneafety grade Steam Generator Startup and Recirculation System in the Auxiliary Building could result in a harsh environment that exceeds the qualification limits for safety-related electrical equipment. Failure of nearby safety-related equipment in one system train because of the harsh environment caused by the pipe break coupled with an assumed failure in the same safety system in the other train may result in a situation that could adversely affect safe shutdown of the plant.
The cause of this deficiency was determined to be lack of sufficient pipe l
break analysis criteria at the time of system design. No other TVA
- facilities are affected by this deficiency.
- ' Interim Prof ess Design work relating to the system relocation / enclosure is continuing. The system design document, the design criteria drawings, and mechanical piping drawings have been revised to reflect the requirement that the startup and recirculation system piping in the auxilia:'y building be isolated from the building environment.
Still in progress is the revision to civil design drawings (concrote and steel) of the pipe chases and pump enclosures required to implement the piping isc.1ation.
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