ML20153D686
| ML20153D686 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 05/04/1988 |
| From: | Counsil W, Woodlan D TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| CP-85-35, TXX-88437, NUDOCS 8805090251 | |
| Download: ML20153D686 (2) | |
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--.E E log # TXX-88437 C-File # 10110
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C 903.9 7UELECTRIC Ref. # 10CFR50.55(e)
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May 4, 1988 U. S. Nuclear Regulatory Commission Attn:
Document Control Desk Washington, D.C.
20555
SUBJECT:
COMANCHE PEAV STEAM ELECTRIC STATION (CPSES)
DOCKET NOS. 50-445 AND 50-446 CABLE TRAY HANGER DESIGN SDAR: CP-85-35 (FINAL REPORT)
REF:
SDAR: CP-83-15, "CABLE TRAY CLAMPS" Gentlemen:
On October 21, 1986, we notified you by our letter logged TXX-6048 of a deficiency involving cable tray hanger design which we deemed reportable under thn provisions of 10CFR50.55(e). Our latest report on this issue, logged TXX-88410, was submitted April 27, 1988.
This report is submitted to update the corrective action completion schedule for this issue.
As indicated in TXX-6048, our corrective actions for this issue include a design validatior. program (which include the issue regarding inadequate bolting material and fastener tension for cable tray clamps - SDAR: CP-83-15) for cable tray hangers based on as-built conditions and a testing program to provide additional confirmation of the design validation methods.
The testing program has been completed.
With respect to the design validation program for Unit 1 and Common Area, as-dasigned drawings have been developed for each cable tray hanger.
Field walkdowns have been performed (per FVM-CS-001/FVM-CS-003) to establish and indicate on the drawings, the hanger as-built conditions.
Final as-built drawings were produced from information gathered from the walkdown effort.
Quality Control Verifications of the as-built drawings were performed in accordance with Ql-QP-11.10-9, which has been revised to N01-3.09-M-001, "Modification, Rework and As-Built Inspection / Verification of Cable Tray Hangers in Unit 1" and QI-QP-11.10-2A, "Inspection of Unit 2 Cable Tray Supports for Spread Room Attachments." Span layout sketches were developed, based on field walkdown data.
The total number of hangers identified as requiring modification as a result of the design validation is eight hundred seventy-four (874) out of a total of seven thousand five hundred sixty six (7566) hangers in Unit I and Common.
Design Change Authorizations (DCAs) have been issued for these modifications.
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l TXX-88437 May 4, 1988 Page 2 of 2 The Unit 1 corrective actions is currently scheduled for completion by August 1, 1988.
Corrective actions for Unit 2 are currently scheduled for completion prior to Unit 2 fuel load.
Very truly yours, U.b W. G. Counsil By:-
D. R. Woodlan Docket Licensing Manager DAR/grr c-Mr. R. D. Martin, Region IV Resident Inspectors, CPSES (3)
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