ML19338D684
| ML19338D684 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 09/10/1980 |
| From: | Bryan J UNION ELECTRIC CO. |
| To: | |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, ULNRC-386, NUDOCS 8009230651 | |
| Download: ML19338D684 (2) | |
Text
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union ELEcrnic COMPANY 1901 GRATIOT.TMEET
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September 10, 1980 Mr. James G. Keppler
'U.
S. Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, IL 60137 ULNRC-386
Dear Mr..Keppler:
FINAL 10CFR50.55(e) REPORT BERGEN-PATERSON PIPE ~ SUPPORT STRUT WITH MECHANICAL SHOCK ARRESTOR CALLAWAY PLANT UNIT 1 Ref:
ULNRC-368, 7/30/80 On July 2, 1980 we provided NRC Region III verbal notific_; ion of a 10CFR50.55(e) report regarding a potential bolt head-pipe clamp interference which could hinder the full function of Bergen-Paterson (B-P) pipe support strut assemblies containing Pacific Scientific mechanical shock arrestors.
In the referenced letter we advised that information~we had received from B-P needed clarification and that we would submit a final report by September.30, 1980.
Enclosed is our final report covering this deficiency.
Ver truly yours, M(b VN John K. Bryan
,J RPW/sla Enclosure cc:
H.'M.
Wescott, Region III~
B. H. Grier, Region I Victor Stello, Jr., Directir Office I&E W. A. Hansen, NRC Resident Inspector Mo. Public Service Commission
,K. V. Seyfrit, Region IV god Stll 800923066/i
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-10CFR50.55 (e) FINAL' REPORT.
EBERGEN-PATERSON' PIPE SUPPORT STRUT WITH MECHANICAL-SHOCK ARRESTOR CALLAWAY PLANT' UNIT l'
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INTRODUCTION.
Thisl final report, submitted in accordance with 10CFR50.55(e),
1 covers the resolution of.a1. problem regarding a potential bolt head--
.l pipeLclamp-interference which could hinder the; full function of Bergen-Paterson- (B-P) pipe 1 support strut assemblies containing -
Pacific Scientific mechanical ~ shock: arrestors..This. deficiency.
was; initially reported by B-P in 'a 10CFR Part _21 report to: the i'
NRC Region I Office'of, Inspection and Enforcement datsiJune 20, 1980.- Union Electric provided. verbal riotification to NRC Region III~on July 2,_1980 after receipt of'a letter from B-P listing a
_ number of affectedcassemblies that purportedly had been. shipped
.to-Callaway.
DESCRIPTION OF DEFICIENCY, A complete description of the deficiency is contained in the above mentioned 10CFR Part 21 report submitted by B-P.
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ANALYSIS 07 SAFETY IMPLICATIONS i
The interference condition identI& f;ed by B-P could have inhibited pipe movement required by design sud caused overstressing.
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of piping and' supports with adverse safety significance..
CORRECTIVE ACTION TAKEN' By-letter to Bechtel Power Corporation dated August 14, 1980'B-P advised that all, assemblies.for Callaway Unit 1 were
' corrected prior to shipment.
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RPW-9/10/80 l
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