ML20083L274
| ML20083L274 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 04/10/1984 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 8404170202 | |
| Download: ML20083L274 (2) | |
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TENNESSEE VALLEY AUTHORITY CH ATTANOOGA, TENNESSEE 37401 400 Chestnut Street Tower II i
1984 N APR 12 A 8 : S tpri BLRD-50-438/82-42 BLRD-50-439/82-38 U.S. Nuclear Regulatory Commission Region II Attn:
Mr. James P. O'Reilly, Regional Administrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30303
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - EVALUATION OF FLANGE JOINTS -
BLRD-50-438/82-42, BLRD-50-439/82 FOURTH INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector R. V. Crlenjak on June 1, 1982 in accordance with 10 CFR 50.55(e) as NCR BLN CEB 8205. This was followed by our interim reports dated July 2, and November 17, 1982 and April 18, 1983 Enclosed is our fourth interim repor t.
We expect to submit our next report by October 12, 1984.
If you have any questions concerning this matter, please 6et in touch with R. H. Shell at FTS 858-2688.
Very truly yours, TENNESSEE VALLEY AUTHORITY L. M. Mills, Manager Nuclear Licensing Enclosure cc:
Mr. Richard C. DeYoung, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Corumission Washington, D.C.
20555 Records Center (Enclosure)
Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 8404170202 840410 PDR ADOCK 05000438 S
PDR OFFICIAL COPY Zd27 j
lg 1983-TVA SOTH ANNIVERS ARY An Equal Opportunity Employer
- . g, ENCLOSURE s
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 EVALUATION OF FLANGE JOINTS NCR BLN CEB 8205 BLRD-50-438/82-42, BLRD-50-439/82-38 10 CFR 50.55(e) l FOURTH INTERIM REPORT i
Description of Deficiency I
Flanged joints for ANS Safety Class 2 and 3 alternate analysis piping systems were not qualified in accordance with the ASME Boiler and Pressure Vessel Code, section III, paragraph NC-3647. This piping was analyzed using TVA's Division of Engineering Design Civil Engineering Support Branch j
(CEB) Report CEB-76-11. However, this report does not delineate guidelines or methods for flange design verification. Also, TVA design criteria WB-DC-40-31.7 does not address flange qualification. Planged joints are used in a number of safety-related systems such as the Essential Raw Cooling Water System and the Component Cooling Water System.
t Interim Progress Bellefonte " Alternate Criteria for Piping Analysis and Supports,"
i No. CEB-76-11, has been revised to incorporate flange qualification j
procedures. Flanges on all new and previously completed problems are being evaluated by the Bellefonte Design Project for compliance to ASME Section III using CEB-76-11 and other procedures approved by,CEB.
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