ML19296B022

LER 80-007/03L-0:on 800116,ref Position Verification for Group 5,rod 11,was Made 1-h & 40 Minutes Late.Caused by Operator Oversight Due to Lack of Adequate Reminder Sys. Multiple Timer Sys Will Prevent Recurrence

ML19296B022
Person / Time
Site:	Davis Besse
Issue date:	02/12/1980
From:	Swanger F TOLEDO EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19296B017	List: ML19296B016 ML19296B022
References
LER-80-007-03L, LER-80-7-3L, NUDOCS 8002190702
Download: ML19296B022 (2)

Text

fir 4C TCRM 2CG U. S. NUCLE AR nEGULATORY COYMisstofJ Q 71) ,.

1

[ LICENSEE EVENT REPORT l COfATHOL GLOCK. l I

l l l l l lh ti (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) lo lil8 9b Hl Dl B Sl 1l@l 0 l 0 l -l 0LicEmE 7 LILU.;EE C03E 14 1 'a l 0 NutaEH l N I P Fl-l0l3l@l4l1l1l1l1l@l 25 26 LicENat T YPE JJ l

bl LAI b3 l@

CO*f T 0 1 8

[,*,$ E 44 L l@l0 l5 l0COC*.E 61 l- le 3 l4 l6 @l 0 l 1 lE%ENT nd tJ 1 l 6DATE l 8 l 0 l@] 0 ] 2HEPCHT 14 75 l 1l D21ATE 8 l 08Jl@

i T Nu'.*3 d A EVEfJT DESCRIPTIOlJ Af!D PROGACLE CONSEQUENCES h o 2 l On 1/16/80 at 1300 hours0.015 days <br />0.361 hours <br />0.00215 weeks <br />4.9465e-4 months <br />, the increased surveillance frequency requirement of T.S.  ;

[ol3l l 3.1.3.1.1 was missed. The inoperability of asymmetric rod fault circuitry for Group Si o ., l Rod 11 required a zone reference position verification which was due at 1300 hours0.015 days <br />0.361 hours <br />0.00215 weeks <br />4.9465e-4 months <br /> but; lol3; ; was not made until 1440 hours0.0167 days <br />0.4 hours <br />0.00238 weeks <br />5.4792e-4 months <br />. With the allowable frequency stretch applied, the read 7 o c l ing was 40 ciinutes late. There was no danger to the health and safety of the public l 0 7 i or station personnel. The reading showed the rod was still at its desired 100% with ,

o y  ; drawn position. (NP-33-80-09) -

l OO 7 8 9 SYSTEV CAUSE CAUSE C O*.? P. VALVE CODE CODE SUSCOCE COMPONENT CODE SUBCODE SUSCCCC lol9l 7 8 lR lB l@ l Al@ l Al@ lIlN lS lT lR [U l@ [ Zl@ l Zl@

9 to 11 12 13 lt! 19 2J

,_ SE QUE N TI AL OCCU A R E NCE REPORT REVISION (g p pg EVENT YEAR REPORT NO. CODE TYPE O.

@ ,Rj[,Q

_ l218l0l 22 l ___ l 2J Q'1 l 7 26l 24 jfl 21 l0 l3 l 28 23 lL l Jo j.__l J1 U

J2 TAK f ACT ON PLA T t TH HOURS 22 S B if E F R1 B. S PLIE mar FA T ER lJJH lgl34Xlg l Zlg J2 lM Z l@ l 0l 0l 0l J/ 4g l lYg 41

] g 42 lZ l g 43 lZ lZ lZ lZ lg 44 4; CAUSE DESCRIPTIOfJ AND CORRECTIVE ACTIONS h i e l The increased surveillance f requency requirement was overlooked by the operator due to; lijij l the lack of an adequate reminder system. The operators will be provided with a multi j

. ,, ; ;; j pie timer system which will provide warnings for theso non-routine increased surveil- l

,l3l l lance requirments and prevent a recurrence. l

_ li l 41 l 80 I

7 8 9 SA S  % POWE R OTHER STATUS ISCO RY DIS:0VEHY DESCRIPTION i s l 4@ lll0l0l@l NA l l A lgl NA l ACTIVITY CO TENT RELE ASED Or RE LE ASE AMoVNT OF ACTIVITY LOCATION OF RELEASE

[ Zj @ LZj@ na I NA

_ ii7 o

8 9 10 11 44 l

45 80 PERSONNEL E yPOSURES NUP.tB E R TYPE DESCRIPTION

• _ Ii I 7 I l 01010 l@Lz J@l "^ I PERSONNEL INNHiES NUY8ER DESCRIPTION

- _ rei 1 10 i O i O lgi NA i 7 8 9 11 12 d0

~

LOSS OF OR DAYAGE TO FACILITY 43 TYPE D E >C hip TION

• 8 0 0 219 07on c'l7" NA 7

i o 8 9 IZl@l to 80 l

I UESCRIPTION

• llllllllllll lj

~

' ' @ SSUf[ N_j l NA l F 8 9 10 68 69 80 ;

DVR 80-012 I"'

NAME OF PREPARER W""k M""

PHONE: 00-2

a TOLEDO EDISON COMPANY DAVIS-BESSE NUCLEAR POWER STATION UNIT ONE SUPPLEMENTAL INFORMATION FOR LER NP-33-80-09 DATE OF EVENT: January 16, 1980 FACILITY: Davis-Besse Unit 1 IDENTIFICATION OF OCCURRENCE: Missed increase surveillance of Group 5, Rod 11 position verification Conditions Prior to Occurrence: The unit was in Mode 1, with Power (>BCE) = 2762 and Load (Gross MWE) = 920.

Description of Occurrence: On January 16, 1980 at 1300 hours0.015 days <br />0.361 hours <br />0.00215 weeks <br />4.9465e-4 months <br />, the increased surveil-lance requirement of Technical Specification 3.1.3.1.1 was missed. The inoperability of asymmetric rod fault circuitry for Group 5, Rod 11 required a verification of rod position every four hours. A reading was due at 1300 hours0.015 days <br />0.361 hours <br />0.00215 weeks <br />4.9465e-4 months <br /> but was not made until 1440 hours0.0167 days <br />0.4 hours <br />0.00238 weeks <br />5.4792e-4 months <br /> the same day. At 1440 hours0.0167 days <br />0.4 hours <br />0.00238 weeks <br />5.4792e-4 months <br /> the operator remembered the increased surveil-lance requirement, took the reading, and reported his error.

Designation of Apparent Cause of Occurrence: Due to an inadequate reminder system, the increased surveillance requirment was missed.

Analysis of Occurrence: There was no danger to the health and safety of the public or to station personnel. With the allowable 25% stretch in the frequency of the surveillance requirement applied, the operator was only 40 minutes late in his reading, and it showed the rod was still at its 100% withdrawn position.

Corrective Action: Corrective action consisted of counse ing the operator who missed the reading on the importance of taking all required readings on time. To prevent a recurrence of the problem, a timer system is being provided which will have multi-pie timers to provide alarms to remind operators of non-routine required actions.

Failure Data: Similar previous occurrence was reported in Licensee Event Report NP-33-79-44 on March 20, 1979.

LER #80-007