ML20009B044

LER 81-011/03L-0:on 810608,during Routine Maint,Diesel Generator 1/2 Was Removed from Svc Prior to Demonstrating Diesel Generator 2 Operability,In Violation of Tech Spec. Caused by Personnel Error.Personnel Reinstructed

ML20009B044
Person / Time
Site:	Quad Cities
Issue date:	07/01/1981
From:	Kaeppel F COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20009B036	List: ML20009B035 ML20009B044
References
LER-81-011-03L-02, LER-81-11-3L-2, NUDOCS 8107140699
Download: ML20009B044 (2)

Text

wsw-I '-77)

. . L.lCENSEE EVENT REPORT (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

CONTROL BLOCK: l 9

l l l l l 6

lh IO l 819l l l lLICENSEE L l QCODE l A l D l 215 l@l 0 l 0 lLICENSE 0 l - NUMBER l 0 l 0 l 0 l- l025l0 l0 26 lhl4l1l1l1l1l@l LICENSE TYPE JO l

S F GA T SS l@

s 14 CON'T 101il E Ql0 l5 l0 10 . p l 2 l 6 l 5 l@l680 l6 69 l0 EVENT l8 l DATE 8 l 1 l@l 0 l 7 REPORT 74 75 l 0 l DATE l 18 l180l@

> 8 60 61 DOCKET NUMBER EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h While performing routine maintenance on the Station Diesel Generators, the 1/2 Diesel l l 012 l l Generator was removed f rom service prior to demonstrating the 2 Diesel Generator l

,,,3, g

,gg,,g operable. This is in violation of Technical Specification 3.9.E.2. The probable g consequences are minimat,because the 2 Diesei Generator was fully operable at all g g

times while the 1/2 Diesel Generator was out of service. 9 l

l0l7ll l

10181I 60 SYSTEM CAUSE CAUSE COMP. VAlbE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE l0l9l8 7

d l E lh dh l A lh l E l N l G l 1 l N l E lh Wh [Z_] h 9 10 11 12 13 18 19 20 OCCURRENCE REPOnT REVISION SEQUENTIAL REPORT NO. CODE TYPE NO.

LE R EVENT YEAR

@ ,ajg/RO g 18 l1l L_J 10 11 11 i L(_J 10 13 I l'l I-I [ 0_1 24 26 27 28 29 30 31 32

_ 21 22 23 ON PL NT HOURS S f IT D FOR1 B. S PPLIE MAN F TURER AK f ATC 1E 33

[34_H_j h (_5Zj 3

h l6Z lh 3 3l1 O! 0l 0l 0l 40 l41 Y lh l2 4 Nlh dh 43 l El 1 l 6 l Ol@

44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h The monthly maintenance procedure f 11101l The cause of this occurrence is oersonnel error.

i i l has been reviewec and no changes were deemed necessary. The Operations personnel ' l have been re-inst ructed on this procedure. [

,,,,,l i

i a I l

li l4 I I 7 8 9 OTHEFt STATUS 1500 RY DISCOVERY DESCRIPTION ST S  % POWER l Al@l Operational Event l i s W@ l 0l 8l 6l@l NA l A TIVITY CO. TENT RELEASEO OF DELEASE AMOUNT OF ACTIVITY LOCATION OF ftELEASE NA NA l l l 7

i G 8 9 b h Chl to is 44 45 83 PEfh0NNEL EXPOSURES i

NU'NJ E F4 TYPE DESCRIP TION l

i 7 10 l 0 l 0 l@LZ_j@l NA 60 7 8 9 11 12 13 PE f tOONN E t. IN JunlES NU?f Mf.It DEscinP TION NA l li ln l8 l9 0 l o l 0 J@l17 7 tt E3 L 0% OF OH DA*.tAGE TO FACILITY Q TYPE Di e. cit;* TION 0 1 9 NA l l Z l@l

• Puoti$iv 8107140699 810701 N " C " 0" ' . ,'

PDR ADOCK 05000265 121 ol L"JE.

izou 0L. __- OnonPrioNh NA S PDR l [ l l [] l l l l l l j l %

6B 69 L J. E J R 9 19 o

F. Kacppel rooNe. 309-654-2241, ext. 171 ,

Ns. - - ,s - _ . .

, .. s

.) *

1. LER NUMBER: LER/R0 81-11/03L-0 ll. LICENSEE NAME: Commonwealth Edison Company Quad-Cities Nuclear Power Station 111. FACILITY NAME: Unit Two IV. DOCKET NUMBER: 050-265 V. EVENT DESCRIPTION:

The routine monthly preventive maintenance for the three Standby Diesel Generators was being performed at the time of the occurrence. On June 8, 1981, the 1/2 Diesel Generator was started and demonstrated to be operable.

This permitted taking I Diesel Generator out of service. 1 Diesel Generator was taken out of service, preventive maintenance was performed, and the Diesel Generator was returned to service. The maintenance team then went to the 1/2 Diesel Generator and had it removed f rom service, it remained out of service for approximately 30 minutes for preventive maintenance. At that time, the limiting condition for operation in Technical Specification 3 9.E.2 was exceeded. The 1/2 Diesel Generator was taken out of service without demonstrating that the 2 Diesel Generator was operable.

The 1/2 Diesel Generator was returned to service, started, and demonstrated to be operable. _Then the 2 Diesel Generator was removed f rom service, preventive maintenance performed, and returned to service, started, and demonstrated to be operable.

VI. PROBABLE CONSEQUENCES OF THE OCCURRENCE:

The 2 Diesel Generator had previously been started and loaded on May 26, 1981. There were no operational problems found while the 2 Diesel l

Generator was out of service for preventive maintenance. Immediately after j the routine maintenance of 2 Diesel Generator, it was started and demonstrated to be operable. The 2 Diesel Generator would have started if

^

needed while Diesel Generator 1/2 was out of service. At no time during

, the maintenance of the Diesel Generators was there more than one Diesel l Generator out of service. The consequences of this deviation are minimal, and safe operation of the plant was not affected.

Vll. CAUSE: ,

t l The cause of this- occurrence is personnel error. The Shi f t Engineer made l an outage report, QOS 6600-04, for the i Diesel Generator at the time of

! removing the 1/2 Diesel Generator from service, but failed to also specify the 2 Diesel Generator.

l l Vill. CORRECTIVE ACTION:

This is the first occurrence of failure to demonstrate operability of a Diesel Generator during monthly maintenance. The Unit Two Operating j- Engineer has instructed Operating personnel in the Diesel Generator monthly

maintenanc2 p rocedu re. The Unit One Operating Engineer has reviewed the l procedure for removing Diesel Generators f rom service wi th the Shi f t Engineer.