TXX-6751, Final Deficiency Rept CP-86-73 Re Installation of ASME Snubber Attachment Brackets.Initially Reported on 870320.Min c-c Dimensions for Size 3 & 10 Snubber Forwards Brackets & Spec 2323-MS-100 Revised

Final Deficiency Rept CP-86-73 Re Installation of ASME Snubber Attachment Brackets.Initially Reported on 870320.Min c-c Dimensions for Size 3 & 10 Snubber Forwards Brackets & Spec 2323-MS-100 Revised

ML20234E362
Person / Time
Site:	Comanche Peak
Issue date:	09/18/1987
From:	Counsil W TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
CP-86-73, TXX-6751, NUDOCS 8709220363
Download: ML20234E362 (2)

Text

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Log # TXX-6751.

File # 10110

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= = Ref # 10CFR50.55(e) nlELECTRIC September 18, 1987 William G. Counsil Executive Vice President U. S.- Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C. 20555

SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION I DOCKET NOS. 50-445 AND 50-446 ASME SNUBBER ATTACHMENT BRACKETS SDAR: CP-86-73 (FINAL REPORT)

Gentlemen:

By letter logged TXX-6315, dated March 20, 1987, we notified you of a deficiency involving installation of ASME snubber attachment brackets, which we determined to be reportable under the provisions of 10CFR50.55(e). Our last interim reports were logged TXX-6497, dated June 12, 1987, and TXX-6315 i dated March 20, 1987. These two interim reports provided specific details of 1

this deficiency but did not provide a description of all program changes l initiated to preclude recurrence of the deficiency. Program changes not i previously provided are summarized below. i i

Our evaluation of project procedures has been completed. As a result of this l evaluation, the minimum "c-c" dimensions (centerline-to-centerline distance between the forward and rear mounting brackets pins) for size 3 and size 10 snubber forward brackets have been revised. Also, Project Specification 2323-MS-100, " Field Fabrication and Erection of Piping and Pipe Supports", has 1 been revised to require inspection of size 10 snubbers during installation to l assure an adequate swing angle cone. The above changes have also been '

incorporated into pipe support construction procedures CP-CPM-9.10A,

" Installation of Vendor Supplied Component Support Catalog Items" and ACP-11.5, " Component Support Fabrication". In addition, inspection criteria have been revised in procedures AQP-11.3, " Fabrication / Installation Inspections of Component Supports", AQP-11.5, "ASME Component Installation Verification", QI-QAP-11.1-28, " Fabrication / Installation Inspections of ASME Component Supports, Class' 1, 2, and 3", and CP-QAP-12.1, " Mechanical Component ,

Installation Verification, N-5 Certification". l 8709220363 PDR ADOCK

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1 TXX-6751, .-

Septemb'ee 18, 1987'

'Page 2 of 2 As previously reported, the 31 supports requiring rework will be completed by January 26, 1988. No further corrective action is required for this issue.

' Supporting documentation will be available onsite for review after February 12, 1988.

4 Very truly yours, f I'N W. G. Counsil BSD:tgj c - Mr. R. D. Martin, Region IV  !

Resident Inspectors, CPSES (3)

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