ML20070C992
| ML20070C992 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 12/06/1982 |
| 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 8212140415 | |
| Download: ML20070C992 (2) | |
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TENNESSEE VALLEY AUTHORITY CH ATTANOOGA. TENNESSEE 37401 400 Chestnut-Street Tower II December 6, 1982-BLRD-50-438/82-55 BLRD-50-439/82-49 j
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U.S. Nuclear Regulatory Commission E
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Region II
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Attn: -Mr. James P. O'Reilly, Regional Administrator P
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101 Marietta Street,' Suite 3100 Atlanta, Georgia 30303
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Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - CONDUIT LOADING ON ANNULUS FRAMING IN REACTOR BUILDING - BLRD-50-438/82-55, BLRD-50-439/82 FINAL 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 i
i NCR BLN QAB 8204. This was followed by our first interim report dated i
September 1, 1982. Enclosed is our final report. TVA does not now consider the subject nonconforming condition adverse to the safe operation of the plant. Therefore, TVA will amend our records to delete the subject l
nonconformance as a 10 CF3 50.55(e) item.
If you have any questions concerning this matter, please get in touch with l
R. H. Shell at FTS 858-2688.
Very truly yours, TENNESSEE VALLEY AUTHORITY OS h L. M. Mills, Manager
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Nuclear Licensing Enclosure oc:
Mr. Richard C. DeYoung, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuc ear Regulatory Commission Washington, D.C.
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An Equal Opportunity Employer
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c ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 CONDUIT LOADING ON ANNULUS FRAMING IN REACTOR BUILDING NCR BLN QAB 8204 BLRD-50-438/82-55, BLRD-50-439/82-49 10 CFR 50.55(e)
FINAL REPORT Description of Deficiency Conduit was placed along a span of structural steel in the annulus of the reactor building. The steel was not designed to support the resultant torsional loading. The conduit is field routed by TVA's Civision of Construction (CONST). At the time this nonconformance was written, it was felt that the application of torsional loads to the support framing in excess of design requirements constituted a nonconforming condition.
Further investigation has revealed that the original degign meets all requipements of the design critgria including 150 lb/ft live load, 150 lb/ft dead load, plus 20 lb/ft grating load. The annulus steel framing was designed as an access platform. Upon determination that conduits would be supported from the steel framing, additional torsional bracing was required and added by Engineering Change Notice (ECN) 1290.
When the functional requirements of a system changes, an ECN is written to modify design as required. The closing of the ECN is TVA's Division of Engineering Design (EN DES's) final approval of the modifications. This condition is viewed as part of the engineering process, and not a nonconformance. Therefore, TVA considers this item no longer reportable under 10CFR50.55(e).
Safety Implications As discussed above, TVA does not consider the subject nanconformance to -
document a condition adverse to safe plant operation.
_C_orrective Action No corrective actions are necessary because it has been determined that the subject nonconformance does not document a deficient condition.
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