ML20030C831

Forwards Completed Data Tables Re Reliability of Onsite Standby Diesel Generators,Per NRC 810720 Request Concerning Station Blackout

ML20030C831
Person / Time
Site:	Point Beach
Issue date:	08/21/1981
From:	Fay C WISCONSIN ELECTRIC POWER CO.
To:	Clark R, Harold Denton Office of Nuclear Reactor Regulation
References
REF-GTECI-A-44, REF-GTECI-EL, TASK-A-44, TASK-OR TAC-43944, TAC-43945, NUDOCS 8108280219
Download: ML20030C831 (9)

Text

...

1 WISCONSIN Electnc POWER COMPANY 231 WEST MICHIGAN, MILWAUKEE, WISCONSIN 53201 August 21, 1981

1. ' f[4Ch.

\\t Mr. H.

R. Denton, Director s 'Y, i q,. j t

' }g Office of Nuclear Reactor Regulation

'g b([. l)

U. S. NUCLEAR REGULATORY COMMISSION g7ggge[2 Washington, D. C.

20555 Attention:

Mr. Robert A. Clark, Chief 94 Operating Reactors Branch 3 y

Gentlemen:

g DOCKET NOS. 50-266 AND 50-301 UNRESOLVED SAFETY ISSUE A-44 STATION BLACKOUT POINT BEACH NUCLEAR PLANT, UNITS 1 AND 2 Attached you will find the completed data tables dealing with the reliability of on-site standby diesel generators as requested in your letter of July 20, 1981.

Should there be any need for clarification or minor follow-up information, please feel free to contact Mr. Robert E. Link, superintendent - engineering, quality, & regulatory affairs, at the Point Beach Nuclear Plant at 414-755-2321.

If any furthe, detailed information or analysis is required, we assume that such a request will be made to us in writing.

Very truly yours, 0

C. W. Fay, D ector Nuclear Power Department Attachment f

0 I

Copy to NRC Resident Inspector hl L

8108280219 810821 PDR ADOCK 05000266 i

F PDR.

Encloaure 1 - Page 1A Plant Nasue Point Beach TAllt.E 1 Diesel Generator Operations Data Unit No.

1& 2 Calendar Year 1980 Reason for DG tiumlier Number Perc~nt Duration of Run

~

Operation, & scheduled DC of of I.ohding of liefore Stop For Identification of Failure Duration of Run flo.

Starts Failurer DC (KW)

Each DG Failure (Refer to_strached I.ERs or Taisle 3)

Tech. Spec Req'd Teac Bi-weekly Surveillance 3D 27 0

100 one hour, one start 4D 29 1

100 0 minutes LER #2 pcr test Daily Surveillanc:e 3D 11 0

100 one hour, one start 4D 6

0 100 l

per test (when required)

Special Testing 3D 3

0 100 one avu, one start 4D 4

0 100 per test "Special Testing" is t ic uns heduled I erforma: ice of the Te chnical Specification est whether required after maintenance or to verify operat ility Ln the ev< nt of f. tilure of th-other unit or as desi ed by Maintenance or Operations groups.

DC Actual Demand Starts not for Testing 3D 1

0 0

LER 80-008/OlT-0, Unit 2 4D 1

0 0

LER 80-008/OlT-0, Unit 2 Hiscellaneous Tests (Specify Type)

~

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e - Page 2 ese encra r cheiluled Downt ime Record Plant HassaPoint Beach TABI.E 2 Calendar Year 19 16 - 1980 Unit No.

1& 2 llours of Downtime Reason for Reactor shutdown l

Reactor not shutdown Comumen t s Downtime gx;y pur pgy--UUF T F DGf DCf 7)Cf DCf DCf 3D 4D 3D JD Scheduled Haintenance 1980 Annual Overhaul 0

0 103 106 Special Maintenance Testing 0

0 23 6

1979 i

Annual Overhaul 0

0 103 83 Special Maintenance Testing 0

0 4

0 1978 Annual Overhaul 0

0 104 99 1977 Annual Overhaul 0

0 84 81 1976 Annual Overhaul 0

0 79 60 i

Special Maintenance Testing 0

0 60 0

Time DG is unavailable 4

i for emergency service 0

0 0

0 I

because of required tests I

_ - Page 3 TAlst.E 3 Dieas! Generator Unscheduled Downtimo Record Plant Name Point Beach Calendar Yect 19_76 - 1980 Unit No.

1& 2 1.ER Abstract N Downt ime llours Comments - If any of the reported failures would not have been a IN"I"# E" "E E *I failure unde'r emergency conditions, please explain here.

ed LER Abstract s) Total Trouble-Parts, Del - Repair /

Refer to attached LElts or the failures listed in Table 1.

Hours shooting tvery,etc teplace LER #1 3

2 0

1 Speed sensing problem; Diesel would have operated on safety injection demand.

LER #2 5

1 0

4 Redundant starting system would have functioned on loss of AC.

LER #3 13 2

0 11 LER #4 0

0 0

0 Potential problem; No failure.

LER #5 0

0 0

0 Potential problem; No failure.

LER #6 7

1 0

6 LER #7 8

6 0

2 Speed sensing problem; Diesel would have operated on safety injection demand.

LER #8 12 10 O

2 I

- Page 4 TAtti.E 4 Onnita Emergcucy Diesel Generator and Plant Name Point Beach Auxillcry Equipmcut Hodificatien Itecord Unit No.

1 & 2 Equipment or Date of Reason for Hodification and procedure Hod.

Desired Improvement Description of Hodification modified Diesel Exhaust System 09/79 Add exhaust manitold inspection (M-515) Installed inspection port kit in exhaust port for examining exhaust manifold.

screen.

Diesel Ventilation 11/80 To provide ventilation to diesel (M-685) Air flow was reversed by reversing fan generator during a turbine motor leads.

hall fire.

There have been no si gnificant changes in diesel operating procedures

-.