TXX-5025, Final Deficiency Rept CP-86-56 Re Fastening of Standby Diesel Generator Engine Connecting Rod Assembly Identified by Tdi.Initially Reported on 860814.Issue Not Reportable Per 10CFR50.55(e)

Final Deficiency Rept CP-86-56 Re Fastening of Standby Diesel Generator Engine Connecting Rod Assembly Identified by Tdi.Initially Reported on 860814.Issue Not Reportable Per 10CFR50.55(e)

ML20215B256
Person / Time
Site:	Comanche Peak
Issue date:	09/19/1986
From:	Counsil G, Counsil W, Keley G TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	Johnson E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
CP-86-56, TXX-5025, NUDOCS 8610060449
Download: ML20215B256 (1)

Text

< Log # TXX-5025 File # 10110.

r ,. 909.5 TEXAS UTILITIES GENERATING COMPANY SKYWAY TOWER 400 NORT98 OtJVE MI"REET.1.B. e t . DALLAS. TEXAS 7530 8 September 19, 1986 NO"Ek??E."l.%

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Mr. Eric H. Johnson, Director )' 9 Division of Reactor Safety and Projects SEP c 1986 U.S. Nuclear Regulatory Commission f/

611 Ryan Plaza Drive, Suite 1000 -

Arlington, TX 76012

SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)

DOCKET NOS. 50-445 AND 50-446 DIESEL GENERATOR ENGINE CONNECTING R00 ASSEMBLIES SDAR: CP-86-56 (FINAL REPORT)

Dear Mr. Johnson:

On August 14, 1986 we verbally notified your Mr. I. Barnes of a potential deficiency involving the fastening of the standby diesel. generator engine's connecting rod . assembly. On September 12,~1986 we verbally requested and received an extension from your Mr. D. M. Hunnicutt in submitting the written report until September 19, 1986.

The connecting rods involved were identified by the Transamerica Delaval Inc.

(TDI) Diesel Generator Owners Group as a component which had significant known problems that were potentially generic. Based on the Pacific Northwest Laboratory (contracted by the NRC) and the TDI Owners Group findings, it was concluded that the connecting rod assemblies were acceptable for use at Comanche Peak provided that certain preservice and maintenance inspections were performed.

The Unit 1 preservice inspections have been completed and the Unit 2 preservice inspection will be part of the Phase 1 Design Review / Quality Revalidation effort. The maintenance inspections have been identified in the CPSES Maintenance and Surveillance Program. Based on the engineering reviews noted above and the completed inspections, it was concluded that the potential deficiency identified by TDI does not exist at CPSES.

4 We have completed our evaluation and concluded this issue is not reportable pursuant to the provisions of 10CFR50.55(e).

Very truly yours, I

8610060449 860919 W. G. Co nsi PDR ADOCK 05000445 '

s pna By: . /

'G. S. KeeleC /

Manager, Licens JCH/amb i 0 a ouvusso.v or rexas ursiznzs stecraic couraur