ML20113D262
| ML20113D262 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 01/07/1985 |
| From: | Hufham J TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 8504150136 | |
| Download: ML20113D262 (2) | |
Text
r TENNESSEE VALLEY AUTHORITY CHATTANOOGA. TENNESSEE 37401 400 Chestnut Street Tower II darddr] 7,1985 BLRD-50-438/85-01 BLRD-50-439/85-01 U.S. Nuclear Regulatory Commission f
Region II Attn:
Mr. James P. O'Reilly, Regioral Administrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323
Dear Mr. O'Reilly:
BELLEFONTE tiUCLEAR PLANT UNITS 1 AND 2 - UNCONSERVATIVE FLAN QUALIFICATION ANALYSIS - BLRD-50-438/85-01, BLRD-50-439/85 FIRST INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector S. Weise on December 7, j9i3 fin accordance with 10 CFR 50.55(e) as NCR BLN CEB 8420.
Enclosed ~is our fir.^t 1iterim report. We expect to submit our next report on cr about May 31, 198 5.
If you have i.ny questions, please get in touch with R. H. Shell at FTS 858-2688.
Very truly yours, TENNESSEE VALLEY AUTHORITY J. W. Hu h Marnger Enclosure L ensing anc Regulations Mr. Richard C. DeYoung,. Director (Enclosure) i cc:
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Records Center (Enclosure)
Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 0504150 g $$$oh438 PDR AD PDR S
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An Equal Opportunity Employer
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ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 UNCONSERVATIVE FLANGE QUALIFICATION ANALYSIS BLRD-50-438/85-01, BLRD-50-439/85-01 BLN CEB 8420 10 CFR 50.55(e)
FIRST INTERIM REPORT Description of Deficiency 02.2 of the Bellefonte Nuclear Plant. (BLN) Rigorous Analysis Handbook (RAH) BLN-RAH-302, indicated that a normal operating temperature, as opposed to an upset temperature, could be used to qualify a flange -
according-to ASME Code Section III, Subsection NC-3658 (S79). This interpretation was effective November 20, 1982. However, a recent study has indicated that this interpretation was in error and that upset (service level B) temperatures must be used in flange qualification per NC-3658.3 (1983 Edition), equation 12.
Policy statement 15 to section BLN-RAH-302, issued November 5,1984, has corrected this section. BLN piping analysis problems issued between the above dates, which used this optiomi attachment, may have overloaded flanges.
Interim Progress TVA is identifying the analysis problems issued between November 20. 1982, and November 5,1984. TVA will then determine which flange qualification analyses included in these problems mquire requalification. TVA will provide details of this effort in our next mport.
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