ML20072N095
| ML20072N095 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 03/21/1983 |
| 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 8304010443 | |
| Download: ML20072N095 (2) | |
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TENNESSEE VALLEY AUTHORITY CH ATTANOOGA. TENNESSEE 374ol 400 Chestnut Street Tower II March 21, 1983 ca BLRD-50-438/82-14 w
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U.S. Nuclear Regulatory Coinnission a
cim Region II Attn:
Mr. James P. O'Reilly, Regional Administrator E '12 101 Marietta Street, NW, Suite 2900
.: I Atlanta, Georgia 30303 T
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - IMPROPER USE OF FOAM PLASTIC INSULATION ON STAINLESS STEEL PIPE - BLRD-50-438/82-14, BLRD-50-439/82 FIFTH INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspecter
~R. V. Celenjak on February 3, 1982 in accordance with 10 CFR 50.55(e) as NCR BLN BLP 8203. This was followed by our interim reports dated March 5, June 1, September 7 and December 10, 1982. Enclosed is our fifth interim report. We expect to submit our next report by September 14, 1983 If you have any questions concerning this matter, please get in touch with R. H. Shell at FTS 858-2688.
Very truly yours, TENNESSEE VALLEY AUTHORITY DS h
/stL.-M. Mills, Manager
/
Nuclear Licensing Enclosure cc:
Mr. Richard C. DeYoung, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.
20555 8304010443 830321 PDR ADOCK 05000438 OFFICIAL COPY S
PDR t
[Y An Equal Opportunity Employer
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- A ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 IMPROPER USE OF FOAM PLASTIC INSULATION ON STAIITLESS STEEL PIPE
' NCR BLN BLP 8203 BLRD-50-438/82-14, BLRD-50-439/82-14 10 CFR 50.55(e)
FIFTK INTERIM REPORT Description of Deficiency During tbs 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 Regulatory 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 memov andum from R. G. Pratt to Bellefonte Design Project Files dated Octooer 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 cr'. ling for the foam plastic insulation an stainless steel pipe. This deficiency is applicable only to Bellefonte Nuclear Plant. The material has been procured, but none has been installed.
l Inter im Progress TVA has revised the instructional memorandum (BLP 830114 002) to indicate l
the types of insulation compatible with Regulatory Guide 1 36. A similar revision to the mechanical design guide has been completed (DG-M18.9.1 R2). Revised pipe insulation drawings, seismic analysis modes, and procuremnt drawings have been issued. Seismic analysis drawings are being revised by design change report 2195 in accordance with Engir.eering Change l
Notice (ECN) 1396.
"iVA will provide a final report upon conclusion of the design document revisions.
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