ML20063M800
| ML20063M800 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 09/07/1982 |
| 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 8209160128 | |
| Download: ML20063M800 (2) | |
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F-TENNESSEE VALLEY AUTHORITY CH ATTANOOG A. T EN N ESSEE 37401 400 Chestnut Street Tower II September 7, 1982 BLRD-50-438/82-14 BLRD-50-439/82-14 U.S. Nuclear Regulatory Commission Region II Attn:
Mr. James P. O'Reilly, Regional Administrator 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303
Dear Mr. O'Reilly:
c rn BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - IMPROPER USE OF F0AM PLASTIC j INSULATION ON STAINLESS STEEL PIPE - BLRD-50-438/82-14, BLRD-50-439/82,-I THIRD INTERIM REPORT g
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[N The subject deficiency was initially reported to NRC-0IE Inspector R. V. Crlenjak on February 3,1982 in accordance with 10 CFR 50.55(e) es Od
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NCR BLN BLP 8203 This was followed by our interim reports dated March 5 and June 1, 1982. Enclosed is our third interim report. We
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expect to submit our next report by December 13, 1982.
If you nave any questions concerning this matter, please get 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 Commission Washington, DC 20555
[ OFFICIAL COPY 8209160128 820907
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ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 IMPROPER USE OF FOAM PLASTIC INSULATION ON STAINLESS STEEL PIPE NCR BLN BLP 8203 BLRD-50-438/82-14, BLRD-50-439/82-14 10 CFR 50.55(e)
THIRD INTERIM REPORT Description of Deficiency During the process of a design review, a deficiency was discovered in the use of foam plastic insulation on stainless steel pipe. Foam plastic insulation cannot be purchased to meet the requirements for chloride and fluoride content for use on stainless steel pipe as defined by Reguistory Guide 1 36.
This deficiency resulted from the use of two instructional documents by designers which specify foam plastic insulation to be used on cold water piping without distinction to stainless steel (refer to TVA memorandum from R. G. Pratt to Bellefonte Design Project Files dated October 20, 1978, "Bellefonte Nuclear Plant Pipe Insulation" and Mechanical Design Guide DG-M18.9.1 R1). The designers used these documents in preparing pipe insulation drawings, seismic analysis modes, and pipe insulation procurement drawings.
Accordingly, some drawings were released incorrectly calling for the foam plastic insulation en stainless steel pipe. This deficiency is applicable only to Bellefonte Nuclear Plant. The material has been procured, but none has been installed.
Interim Progress TVA has proceeded with a revision to the instructional memorandum to indicate types of insulation compatible with Regulatory Guide 1.36.
A similar revision to the mechanical design guide is progressing.
Pipe insulation drawings, seismic analysis modes, procurement drawings, and other affected drawin63 are being revised to comply with the revised instructions in accordance with engineering change notice (ECN) 1396.
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