ML18037A163

LER 79-001/03L-0 on 790218:during Performance of Surveillance,Test Flow Comparator 11 Did Not Produce Rod Block within Required Tolerance.Caused by Defective Rod Comparator.Component Replaced & Setpoint Left at 14%

ML18037A163
Person / Time
Site:	Nine Mile Point
Issue date:	03/13/1979
From:	Jutras R NIAGARA MOHAWK POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML17053A498	List: ML17053A497 ML18037A163
References
LER-79-001-03L, LER-79-1-3L, NUDOCS 7903190280
Download: ML18037A163 (2)

Text

M 366 v. o. sevvs s:ssn ns;vvs.ss s vn s vvssssrssoasvse

7. 7

'LICENSEE EVENT REPORT CONTROL BLOCK: I Qi (PLEASE PRINT OR TYPE ALL REOUIREO INFORMATIONI I 6

~O 8 9 N Y N LICENSEE CODE II P 1 14 Q2 IS 0 0 - 0 0 0 LICENSE NUMBER 0 0 0 0 e 25 Qs 26 4 1 1 LICENSE TYPE 1 1 J0 Q4~Qs57 CAT 58 CON'T

~O ~LQs 0 5 0 0 0 2 2 0 Q>0 2 1 5 7 9 Qs~03 IJ S~~Qs 8 60 68 69 EVENT DATE 74 75 REPpRT pATE 80 7 61 DOCKET NUMBER EVENT DESCRIPTION ANO PROBABLE CONSEQUENCES QIO

~p During steady state operation,'performance of surveillance test Nl-ISP-

~O3 IC26, found flow comparator Ill did not produce rod block within s

required'OB

~p4 tolerance, required setpoint is 14% +/-. 2, the unit was found 20K. This I

~OS condition resulted in minimal safety implications.

~O7

~OB 80 7 8 9 SYSTEM CAUSE CAUSE COMP. VALVE "

CODE CODE SUBCODE COMPONENTCODE SUBCODE SUBCODE

~OB s7'7: 8

~IA10,11~EQis 9

Qii ~GQ>s 12 13 I N 5 T R 0 18 Q4 ~YQ's 19

~Z 20 Qs SEQUENTIAL OCCURRENCE REPORT REVISION Q17 LERYRD s epos T ACTION, FUTURE EVENT YEAR

~79 22 EFFECT

~

23 SHUTDOWN 24 REPORT Np.

~00 1 26

~~

27

~03 28 ATTACHMENT CODE 29 NPRDP TYPE

~L 30 PRIME COMP.

31

~0'1 32" Np.

COMPONENT TAKEN ACTION ON PI.ANT hIETHOD HOURS Q22 SUBMITTED FORM SUB. SUPPLIER MANUFACTURER QIB QJQ19 ~Q20 QJQ21 0 0 0 0 ~N Q23 ~NQ24 ~NQ2S G 0 8 0 Q2B 33 34 35 ~ 36 37 40 41 42 43 44 47 CAUSE OESCRIPTION ANO CORRECTIVE ACTIONS Q27 p Repl aced defecti ve f ow 1 comparator and the setpoint was 1 ef t at 1 4sIs ~

1 3

1 4 80 8 9

~

7 FACILITY ~3p hIETHOD OF STATUS 51 POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION Q32 s ~EQss ~07 1 Qss NA 44

~OQsi 45 Surveillance Testin 80 7 8 9 10 , 12 13

'5 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY Q LOCATION OF RELEASE Q Q33 Z Q34 . NA N 7 8 9 10 44 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q39 7 8

~00 9

0 Qss 11

~2Qss 12 13s NA s 80 PERSONNEL INJURIES NUM9ER DESCRIPTION~41

~ls 8 ~OO 0 Qss NA 80 7 9 11 12 LOSS OF OR DAMAGE TO FACILITY TYPE DESCRIPTION Q43

~ZQ42 NA 7 8 9 "10 80 o

P U 8 L I C I TY ISSUED

~Q44 DESCRIPTION ~ VSp3 $ 9 pg pQ NRC USE ONLY 7 8 9 10 68 9 80 ss R. Jutras (315)343-2110 ext. 1327 o NAME OF PREPARER PHONE: