ML20041F723
| ML20041F723 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 03/05/1982 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8203170343 | |
| Download: ML20041F723 (2) | |
Text
o TENNESSEE VALLEY AUTHORITY
~
CH ATTANOOG A. TENNESSEE 37401 400 Chestnut Street Tower II s
March 5, 1982 BLRD-50-438/82-14 y
BLRD-50-439/82 '4 6
n(,',
2
/ig
\\
~.~
\\--
g m
U.S. Nuclear Regulatory Commission
{
tf S
,M i{
cigN[,::fe,M Region II
/g j
Attn:
Mr. James P. O'Reilly, Regional Administrato 101 Marietta Street, Suite 3100 t.
^* ~"% -
e Atlanta, Georgia 30303 xy rc
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - IMPROPER USE OF F0AM PLASTIC INSULATION ON STAINLESS STEEL PIPE - BLRD-50-438/82-14, BLRD-50-439/82 FIRST INTERIM REPORT 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) as NCR BLN BLP 8203 Enclosed is our first interim report. We expect to submit our next report by June 2, 1982.
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
.,l L. M. Mills, Manager Nuclear Regulation and Safety Enclosure cc:
Mr. Richard C. DeYoung, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555
!& Q :141, t :0)T) l 8203170343 820305 Qg gf7
/
PDR ADOCK 05000438 S
PDR An Ecual Opportunity Empfoyer
.0 e
ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 IMPROPER USE OF FOAM PLASTIC INSULATION ON STAINLESS STEEL PIPE BLRD-50-438/82-14, BLRD-50-439/82-14 10 CFR 50.55(e)
FIRST IffrERIM REPORT Description of Deficiency During the process of a design review, a deficiency was discovered in the use of roam 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 Nuclear 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 (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 wera released incorrectly calling for the foam plastic insulation on 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 will initiate revision of the memorandum and mechanical design guide to indicate types of insulation compatible with Nuclear Regulatory Guide 1 36.
Pipe insulation drawings, seismic analysis modes, procurement drawings, and other affected drawings will be revised to comply with the revised instructions in accordance with Engineering Change Notice 1396.
I l
l t
J