ML19351D613
| ML19351D613 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 09/10/1980 |
| From: | Bryan J UNION ELECTRIC CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML19351D607 | List: |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, ULNRC-386, NUDOCS 8010140032 | |
| Download: ML19351D613 (2) | |
Text
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9 UNION ELECTRIC COMPANY G
1 sot GRATsOT STREET f
ST. Louls. MassouRa MAsume aconese.
'f,"7,"; **,',*7 September 10, 1980
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Mr. James G. Keppler T. S. Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, IL 60137 ULNRC-38 6
Dear Mr. Keppler:
i 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 notification 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 I
report by September 30, 1980.
1 i
Enclosed is our final report covering this deficiency.
er truly yours,
?
A d(
c John K. Bryan u
i RPW/sla Enclosure cc:
H. M. Wescott, Region III B.
H. Grier, Region I Victor Stello, Jr., Director Office I&E W. A.
Hansen, NRC Resident Inspector Mo. Public Service Commission K. V.
Seyfrit, Region IV SEF l'5' $80 801014003S_
J
i
'i 10CFR50.55(e) FINAL REPORT BERGEN-PATERSON PIPE SUPPORT STRUT WITH MECHANICAL SHOCK ARRESTOR CALLAWAY PLANT UNIT 1 a
INTRODUCTION This final report, submitted in accordance with 10CFR50.55(e),
~
1 covers the resolution of a problem regarding a potential bolt head-4 pipe clamp interference which could hinder the full function of Bergen-Paterson (B-P) pipe 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 NRC Region I Office of Inspection and Enforcement datsIJune 20, 1980.
Union Electric provided verbal notification to NRC Region III on July 2, 1980 after receipt of a letter from B-P listing a number of affected assemblies 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.
ANALYSIS OF SAFETY IMPLICATIONS The interference condition identified by B-P could have inhibited pipe movement required by design and caused overstressing 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 i
corrected prior to shipment.
i RPW 9/10/80
UNION Ei.ECTRIC COMPANY soon onAvior evnter ST. Louis, Missouns ua.u.,oo.....
September 10, 1980
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Mr'. James G. Keppler U.' S. Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, IL 60137 ULNRC-3 8 6
Dear Mr. Keppler:
FINAL 10CFR50.55(e) REPORT BERGEN-PATERSON PIPE SUPPORT STRUT WITl! MECilANICAL SHOCK ARRESTOR CALLAWAY PLANT UNIT 1 Ref:
ULNRC-368, 7/30/80 On July 2, 1980 we provided NRC Region III verbal notification 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, fprep John K.
Bryan N
RPW/sla Enclosure cc:
H. M. Wescott, Region III B.
H. Grier, Region I Victor Stello, Jr., Director Office I&E W. A. Hansen, NRC Resident Inspector Mo. Public Service Commission K. V.
Seyfrit, Region IV SEP, f'5 G80!
10CFR50.55(e) FINAL REPORT BERGEN-PATERSON PIPE SUPPORT STRUT WITH MECHANICAL SHOCK ARRESTOR i
CALLAWAY PLANT UNIT 1 INTRODUCTION I
This final report, submitted in accordance with 10CFR50.55(e),
covers the resolution of a problem 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.
This deficiency was initially reported by B-P in a 10CFR Part 21 report to the NRC Region I Office of Inspection and Enforcement datsiJune 20, 1980.
Union Electric provided verbal notification to NRC Region III on July 2, 1980 after receipt of a letter from B-P listing a number of affected assemblies 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.
ANALYSIS OF SAFETY IMPLICATIONS The interference condition identified by B-P could have inhibited pipe movement required by design and caused overstressing of piping and supports with adverse safety significance.
CORRECTIVE ACTION TAKEN By letter to Bechtel Power Corporation dated August 14, i
1980 B-P advised that all assemblies for Callaway Unit 1 were I
corrected prior to shipment.
{
l RPW 9/10/80
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