ML20100P030
| ML20100P030 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 11/28/1984 |
| From: | Hufham J TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 8412130601 | |
| Download: ML20100P030 (2) | |
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TENNESSEE VALLEY AUTHORITY
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BLRD-50-438/84-540
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- 2 2 November 28,;1984
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BLRD-50-439/84-50 U.S. Nuclear Regulatory Commission Region II 4
Attn:
W. James P. O'Reilly, Regional Administrator 101 Marietta Street, NW, Suite 2900
,s Atlanta, Georgia 30323 i
Dear Mr. O'Reilly:
h BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - WIND AND TOPNADO IBADINO NOT CONSIDERED IN PIPINO ANALYSIS - BLRD-50-438/84-54 AND BLRD-50-439/84 FIRST INTERIM REPORT i
i' The subject deficiency was initially reported to NRC-0IE Inspector P. E. Fredrickson oc October 25, 1984 in accordance with 10 CFR 50.55(e) as NCR BLN CEB 8415. Enclosed is our first ~ interim report.- We expect to submit our next mport on e about October 16, 1985.
i If you have any questions, please get in touch with R. H. Shell at FTS 858-2688.
Very truly yours, TENNESSEE VALLEY AUTHORITY r
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. Nufhat Manager Li ensing an Regulations i
Enclosum i
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W. Richard C. DeYoung, Director (Enclosure) i Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission j
Washington, ~ D.C.
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Records Center (Enclosure)
Institute of Nuclear Power Operations 1100. Circle 75 Parkway, Suite 1500 Atlanta, Oecrgia 30339 t
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84121306018y4gg PDR ADOCK PDR 0FFICIAL COPY l
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l)l JI 7l An Equal Opportunity Employer
ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 WIND AND TORNADO LOADING NOT CONSIDERED IN PIPING ANALYSIS BLRD-50-438/84-54, BLRD-50-439/84-50 NRC BLNCEB8415 10 CFR 50.55(e)
FIRST INTERIM REPORT Description of Deficiency During the reanalysis of rigorous piping analysis problem N4-OSA-B for Bellefonte Nuclear Plant (BLN), a deficiency was idetified in which extreme wind forces were not considered in the previous analysis. The inclusion of wind loads into a rigorous piping analysis problem is mquired by BLN design criteria N4-50-D711 and by the BLN rigorous analysia handbook (RAH). Analysis problem N4-OSA-B was used to determine the locations of and loads on seismic caterogy I and I(L) supports for the 12-inch auxiliary steam system (SA) 91 ping on the roof of the BLN Auxiliary Building.
Interim Progress TVA is in the process of investigating the subject deficiency. The deficiency is also being studied for applicability to other analysis problems and piping systems at BLN.
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