TXX-7056, Final Deficiency Rept CP-87-73 Re Unsound Concrete Mortar at Const Joints.Initially Reported on 870824.Nonconformance Repts C-86-200154 & C-85-101580 Dispositioned to Replace Grout & Rework Affected Areas at Listed Locations
| ML20237A543 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 12/09/1987 |
| From: | Counsil W, Woodlan D TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| CON-CP-87-73 CP-87-73, TXX-7056, NUDOCS 8712150077 | |
| Download: ML20237A543 (2) | |
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Log # TXX-7056 h
File # 10110
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903.8 Ref. # 10CFR50.55(e) 7UELECTRIC wmiam c. coumit December 9, 1987 Eaccutive %cc l%udent U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C.
20555
SUBJECT:
COMANCilE PEAK STEAM ELECTRIC STATION (CPSES)
DOCKET NOS. 50-445 AND 50-446 UNSOUND CONCRETE MORTAR 50AR: CP-87-73 (FINAL REPORT)
Gentlemen:
On August 24, 1987, we verbally notified your Mr. H. S. Phillips of a possible deficiency involving unsound concrete mortar at construction joints.
The conditions addressed in this issue are based upon a site initiated Corrective Action Request (CAR) 87-10 issued as a result of two Nonconformance Reports (NCRs) C-86-200154 and C-85-101580.
Our last interim report on this issue was logged IXX-6884, dated October 28, 1987.
The deficiency described in NCR C-86-200154 is for unconsolidated starter grout at the bottom of a pilaster in a Unit 2 steam generator cubicle.
This NCR was dispositioned to replace the grout.
Calculation No.
15346-CS(S)-145-39B was prepared to verify the structural adecuacy of the pilaster prior to rework.
The results of this calculation incicate that the structural integrity of the construction joint would not be impaired if the joint had remained "as-is."
NCR C-85-101580 described voids, abandoned holes, anchors, and foreign material near the top of a concrete column.
This NCR has been dispositioned to rework the affected area.
Calculation No.16345-CS-(S)-177-398 has been prepared to verify the structural integrity considering the reduced effective area.
The results of this calculation indicate the structural integrity of the column would not have been impaired if the affected area had remained "as-is."
We have concluded that in the event these deficiencies had remaineel uncorrected, no condition adverse to safety would have exist"d.
T h i: i v.u o i t.
not reportable under the provisions of 10CFR50.55(e).
8712150077 871209 PDR ADOCK 05000445 S
DCD l
MM htth Olne Street LB HI DaHas Texas 73201
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TXX-7056 December 9, 1987 Page 2 of 2 Records supporting this conclusion are available for your inspectors to review at the CPSES Project Site.
Very truly yours, b*
W. G. Counsil By:
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D. R. Woodlan Supervisor, Docket Licensing I
CBC/grr j
l c - Mr. R. D. Martin, Region IV Resident Inspectors, CPSES (3) l l
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