ML20236P966

Special Rept:On 871015,valid Failure on Div 2 Diesel Generator Occurred During Tech Spec Surveillance 4.8.1.1.2. Caused by Shuttle Valve Failing to Reposition on Start Signal.Valve Replaced & Design Change Initiated

ML20236P966
Person / Time
Site:	Perry
Issue date:	11/13/1987
From:	Edelman M CLEVELAND ELECTRIC ILLUMINATING CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
PY-CEI-NRR-0750, PY-CEI-NRR-750, NUDOCS 8711190115
Download: ML20236P966 (2)

Text

___

i THE CLEVELAND ELECTRIC ILLUMIN ATING COMPANY q P.O BOX 97 e PERRY, OHIO 44081 e TELEPHONE (216) 259-3737 e ADDRESS-1o CENTER ROAD Sewing The Best location in the Nation -l Murray R. Edelman PERRY NUCLEAR POWER PLANT

$2 VICE PRE 51 PENT NU(1 EAR November 13, 1987 3 PY-CEI/NRR-0750 L l

I Document Control Desk U.S. Nuclear Regulatory Commission l Washington, D.C. 20555 Perry Nuclear Power Plant Docket No. 50-440 Special Report - 4 Valid Test Failure  !

Division 2 Diesel Generator

Dear Sir:

l Attached is a Special Report concerning a valid test f ailure ]

of the Unit 1 Division 2 diesel generator. This report

]

satisfies the conditions of Technical Specifications e 4.8.1.1.2 and 6.9.2.

Please feel free to contact me should you have any further questions.

Very truly yours, a

k Murray R. Ede man Senior Vice President j Nuclear Group 1

l MRE: cab Attachment j 1

cc: T. Colburn K. Connaughton  ;

I L. Hiller (Of fice of Resource Management) i l USNRC Region III, Regional Administrator i 8711190115 871113 1 DR ADDCK 050 0 I

[ _

Attachment-

.PY-CEI/NRR-0750 L' Page'1 of 1 SPECIAL REPORT DIVISION 2 DIESEL' GENERATOR VALID FAILURE On' October 15,:1987 a valid failure occurred on the Division 2 Diesel Generator while performing Technical Specificctien Surveillance 4.8.1.1.2. This is the sixth valid failure to occur on'the Perry Unit 1, Division 2 Diesel Generator.

As of October 15, 1987 the Division 2 Diesel Generator had undergone 61' valid tests,' including this sixth valid failure.

The failure occurred'on the~ start sequence of the Division 2 Diesel Generator j during a routine surveillance test. .. A shuttle valve apparently failed to-l reposition'on the start signal'which prevented the permissive signal to the field flashing circuit. Vithout the permissive.the generator did;not flash.and therefore produced no output, voltage. .The Division.2 Diesel Generator was manually shutdown without incident. The' shuttle valve vas replaced and a design change initiated to replace;its function with electro-mechanical relays.

.The Division 2 Diesel Generator was restarted and verified operable by performing the Division 2 Diesel Generator and Load Surveillance Test. ' The Division 2 Diesel Generator was declared. inoperable on October 15, 1987 at 0910 and was subsequently declared operable on October 17,.1987 at 1312 for a total out of service time of 2 days, 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> and 2 minutes. Since that time the design change has been implemented and successfully retested.

The surveillance testing interval vill remain at,once every 7 days, which is in accordance with Technical Specification Table 4.8.1.1.2-1.

I

- . _ _ _ _ - _ _ - _ -