ML20030E239
| ML20030E239 | |
| Person / Time | |
|---|---|
| Site: | Satsop |
| Issue date: | 09/04/1981 |
| From: | Leddick R WASHINGTON PUBLIC POWER SUPPLY SYSTEM |
| To: | Faulkenberry B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, GO3-81-2452, NUDOCS 8109180249 | |
| Download: ML20030E239 (3) | |
Text
50.55(e) Report
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Docket Nos. 50-508/509 9
Washington Public Power Supply System
,3 Box 1223 Elma, Washington 98541 (206)482 4428 h
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September 4,1981 7
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Nuclear Regulatory Commission, Region V Suite 202, Walnut Creek Plaza 1990 North California Boulevard 4
Walnut Creek, California 94596
'5 Chief, Reactor Construction Projects Branch
,f, Attention:
Mr. B. H. Faulkenberry L
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Gentlemen:
S
Subject:
PROJECT NOS. 3 AND 5 DOCKET NUMBERS 50-508 AND 50-509 d'
p INTERIM REPORT OF POTENTIAL 50.55(e)
UNDERSIZE STRUCTURAL STEEL COLUMN FURNISHED AND INSTALLED
Reference:
Record of Telecon J. A. Puzauskas to D. Haist, dated August 7, 1981.
Attached please find an interim report of a oci.ential 10CFR50.55(e) con-cerning an undersize structural steel columr in Unit 3.
A final report will be provided by January 15, 1982.
Should you have any questions or desire further information, please con-tact me directly.
Very truly yours,
/RG l
l
. S. Leddick Program Director, WNP-3/5 cc:
J. Adarns - PP&L D. Smittpcter - EPA Ebasco - New York WNP-3/5 Files - Richland A'<U\\
L 8109180249 810934 PDR ADuCK 05000508 S
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WASHINGTGN PUBLIC POWER SUPPLY SYSTEM WPPSS NUCLEAR PROJECTS NO. 3 & 5 UNDERSIZE COLUMN INTERIM REPORT
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Introduction:==
During the course of building steel erection in WNP-3 Reactor Auxiliary Building, the installation contractor determined that a column located at column lines P4Z, elevation 390.00 to 417.50 feet had a dimensional discrepancy. Subsequent engineering investigation revealed that the column was undersized, that 1s, a W14x233 column was supplied versus a W14x257 column per the design drawings.
The column was supplied by Isaacson Steel Company, Seattle, Washington.
An NCR was initiated to document the deficiency. The NRC was notified of the deficiency on August 7, 1981 in accordance with the provisions of 10CFR50.55(e).
A.
P0TENTIAL PROBLEMS AND REFERENCES TO THE NOTIFICATION 1.
The installed column will have approximately 10% lower load capa-bilities than the column selected in the design. Engineering evalustion is needed to ensure design integrity.
2.
Since the vendor has supplied numerous structural items, it must be confirmed that this is a single occurence.
B.
APPROACH TO THE RESOLUTION OF THE PROBLEM The Engineer's NCR outlines the approach to the problem as follows:
1.
Perform design evaluation of the column and determine actions needed to ensure design integrity.
2.
Redesign of the connection at the top to allon beam connections to be made to the existing column.
3.
Check all columns and major beam shapes in both Unit 3 and 5.
4.
Require the vendor to perform investigation as to caust of error.
C.
STATUS OF PROPOSED RESOLUTION Engineering has evaluated the column design and proposed the follow-ing repair:
1.
Reinforce column web from El. 390' to El. 417.50' with a 1" thick plate. This will be performed at a later date.
2.
Modify column splice connection above El. 417.50' with shims.
This activity has been completed.
...,s Resident Er:gineering is evaluating all exposed major columns and beams for design compliance.
Isaacson Steel has completed a preliminary investigation. According to the summary of this investigation, the column member identified in the Engineer's NCR was ordered correctly from Bethlehem Steel and Bethlehem apparently supplied W14x233 instead of W14x257.
D.
REASON WHY THE FINAL REPORT WILL BE DELAYED Isaacson Steel has not completed its investigation.
The final report will be issued upon completion of Isaacson's investigation.
E.
PROJECTED COMP _LETION OF CORRECTIVE ACTION AND SUBMITTAL DA7E OF FINAL REPORT A final report will be submitted January 15, 1982.
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