05000306/LER-1982-024-03, /03L-0:on 821123,diesel Generator D1 Inoperable for Approx 4 Minutes After Lockout of Engine Shutdown Circuit Occurred.Probably Caused by Sticky Action of Speed Switch.Further Exam of Circuitry Will Be Performed

/03L-0:on 821123,diesel Generator D1 Inoperable for Approx 4 Minutes After Lockout of Engine Shutdown Circuit Occurred.Probably Caused by Sticky Action of Speed Switch.Further Exam of Circuitry Will Be Performed

ML20028C165
Person / Time
Site:	Prairie Island
Issue date:	12/22/1982
From:	Hunstad A NORTHERN STATES POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20028C159	List: 05000306/LER-1982-024, Forwards LER 82-024/03L-0 05000306/LER-1982-024-03, /03L-0:on 821123,diesel Generator D1 Inoperable for Approx 4 Minutes After Lockout of Engine Shutdown Circuit Occurred.Probably Caused by Sticky Action of Speed Switch.Further Exam of Circuitry Will Be Performed
References
LER-82-024-03L, LER-82-24-3L, NUDOCS 8301070138
Download: ML20028C165 (1)

LER-1982-024, /03L-0:on 821123,diesel Generator D1 Inoperable for Approx 4 Minutes After Lockout of Engine Shutdown Circuit Occurred.Probably Caused by Sticky Action of Speed Switch.Further Exam of Circuitry Will Be Performed

Event date:
Report date:
3061982024R03 - NRC Website

text

(1 119 O.

il LICENSEE EVENT REPORT CONTROL BLOCK: l l

l l

l l lh (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6

Q l M ! N l P l I l N l 2 l@150 l 0 l - l 0 l 0 l 0 l 0 l 0l -l 0 l 0 l@l 4 l1 l 1 l1 l 1 l@l l

l@

8 9 LICENSEE CODE 14 LICENSE NUM8ER 25 26 LICENSE TYPE JO 57 CAT 58 w N'T lolil

$$n$ l L @l 0 l 5 l 010 l0 l 3 l 0 l 6 @l 1 l 1 l 2 l 3 l 8 l 2 @l 1 l 2 l 2 l 2 l 8 l 2 l@

7 8

60 61 DOCKET NUM8ER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h l o [ a l l During surveillance test, af ter D1 Diesel Generator had been shut down, a lockout of I t

o 3 l the engine shutdown circuit occurred, making the engine inoperable for about four 1

i g o l4 ; l minutes. Not repetitive. Tech Spec 3.7.A.5 applies. No effect on public health and I g safety since redundant equipment was operable.

l o s 10 is i I I

lo171I I

10181 l l

7 8 9 80 DE CODE SU8C E COMPONENT CODE SU8 CODE SU E

l E l B lh [X,jh l 2 lh lZ lZ lZ lZ lZ lZ l h l_Z_j h [Zj h o 9 7

8 9

10 11 12 13 18 9

20 SEQUE NTI AL OCCURRENCE REPORT REVISION LE R 'RO EVENT YEAR REPORT NO.

CODE TYPE NO.

h RE l 8l 2l

[--j l 0l 2l 4l d

l 0131 [L_j

[-j y

gU

_ 21 22 23 24 26 27 28 29 30 31 32 AKEN ATO o PLANT M T HOURS S8 IT D FoR b 8.

SUPPLIER MAN F CTURER lX l@[X_J@ JQ y@

l0 l0 l0 l0 l J@

(_Y_j@

y@

l Zl 9l 9l 9l@

33 34 35 36 31 40 43 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h M lMos t probable cause is sticky action of the speed switch. but the occurrence could 1

i i l not be duplicated in subsequent test runs. Further examination of the shutdown 1

l dircuitry will be done.

l

, 7 EI I

Li_LLj l l

7 8 9 80 ST S

% POWER OTHER$7ATUS DISCOV RY DISCOVERY OESCRiPTION [E_j@ l1 l0 l0 l@l NA l

W @l Surveillance test l

i 5 AEriviTY Co'0 TENT RELE ASED OF RELE A'it AMOUNT oF ACTIVITY LOCATION OF RELEASE W @ l Zl@l NA l

l NA l

i n PeRSoNNEt ExPOSuEES DESCRIPTION h NuusER TvPE l0 l 0 l 0 l@l Z l@l NA l

i 7

' PERSonNE't iN3UWiES oEsCniPriONh mum 8En l0l0l0l@l NA l

i 7

8 9 11 12 83 TYPE DESCn Pt ON W @l NA l

l' 9

PususTy 8301070138 821222 80 issue @oESCRiPTiONO PDR ADOCK 05000306 NRC USE ONLY l

NA S

PDR l

lllllllllllllj 2 o 7

8 9 10 68 69 80 5 A. A. Hunstad 612-388-1121 o

NAvr or PRFPARFR

pgny,