ML19350C231

LER 81-022/03L-0:on 810310,31-day Surveillance Interval Re Updating Axial Power Distribution Monitoring Sys Was Exceeded by 25%.Caused by Personnel Not Upgrading Surveillance Log

ML19350C231
Person / Time
Site:	North Anna
Issue date:	03/26/1981
From:	Cartwright W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19350C229	List: ML19350C228 ML19350C231
References
LER-81-022-03L, LER-81-22-3L, NUDOCS 8103310633
Download: ML19350C231 (2)

Text

. 4.

b'# U.S. NUCLEAR REGULATORY COMMISSION LICEFSEE EVENT REPORT CONTROL BLOCK / / / / / / / (1) (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

/0/1/ /V/A/N/A/S/2/ (2) /0/0/-/0/0/0/0/0/-/0/0/ (3) /4/1/1/1/1/ (4) /// (5)

LICENSEE CODE LICENSE NUMBER LICENSE TYPE CAT

/0/1/ R CE g/ (6) /0/5/0/0/0/3/3/9/ (7) /0/3/1/0/8/1/ (8) /0/3/2/6/8/1, (9)

DOCKET NUMBER EVENT DATE REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES (10)

/0/2/ / On March 10, 1981, with Unit I at 100% power,the 31 day surveillance concerned'

/0/3/ / with updating the Axial Power Distribution Monitocing System (APDMS), was ]

/0/4/ / exceeded by the surveillance interval +25%. Since the previous Fz limits were/

/0/5/ / more conservative than the new limits, the health and safety of the public /

/0/6/ / were not affected. This event is reportable pursuant to T.S. 6.9.1.9.c. /

/0/7/ / /

/0/8/ / _.L SYSTEM CAUSE CAUSE C6MP. VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

/0/9/ /R/C/ (11) [A_/ (12) /_X/ (13) /Z/Z/Z/Z/Z/Z/ (14) /Z/ (15) /Z/ (16)

SEQUENTIAL OCCURRENCE REPORT REVISIO1 LER/R0 EVENT YEAR REPORT NO. CODE TYPE NO.

(17) REPORT NUMBER /8/1/ /-/ /0/2/2/ /_\/ /0/3/ G/ /-/ [0/

ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRD-4 PRIME COMP. COMPONENT TAKEN ACTION ON PLANT METHOD HOURS SUBMITTED FORM SUB. SUPPLIER MANUFACTURER g/ (18) /Z/ (19) g/ (20) /Z/ (21) /0/0/0/0/ (22) /Y/ (23) [N/ (24) /N/ (25) /Z/9/9/9/ (26)

CAUSE DESCRIPTION AND CORRECTIVE ACTIONS (27)

/1/0/ / The periodic test in question was not performed due to personnel error. The /

/1/1/ / surveillance log utilized by reactor engineering personnel had not been /

/1/2/ / updated. Upon discovery, the aurveillance test was performed and the log was /

/1/3/ / subsequently updated. /

/1/4/ / /

FACILITY METHOD OF STATUS  % POWER OTHER STATUS DISCOVERY DESCRIPTION (32)

/1/5/ /E/ (28) /1/0/0/ (29) / NA / (30) DISCOVERY

/B/ (31) / ENGINEER OBSERVATION /

ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY (35) LOCATION OF RELEASE (36)

/1/6/ /Z/ (33) /Z/ (34) / NA / / NA /

PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION (39)

/1/7/ /0[0/0/ (37) [Z/ (38) / NA /

PERSONNEL INJURIES NUMBER DESCRIPTION (41)

/1/8/ /0/0/0/ (40) / NA /

~

LOSS TYPE OF OR DAMAGE TO FACILITY (43)

DESCRIPTION

/1/9/ [Z[ (42) / NA /

PUBLICITY ISSUED DESCRIPTION (45) NRC USE ONLY

/2/0/ /_N[ (44) / NA /////////////

NAME OF PREPARER W. R. CARTWRIGHT PHONE (703) 894-5151 810 3310 (=%

o A Virginia Electric and Power Company North Anna Power Station, Unit #2

Attachment:

Page 1 of 1 Docket No. 50-339 Report No. LER 81-022/03L-0 Description of Event On March 10, 1981, with Unit II at 100% power, it was discovered that the monthly surveillance on the APDMS update had exceeded the thirty-one day surveillance +25%. This event is contrary to T.S. 3.3.3.8 and reportable pursuant to T.S. 6.9.1.9.c.

Probable Consequences of Occurrence Since the previous F limits were more conservative than the ones just obtained, the health and Iafety of the public were not affected.

Cause of Event ,

The APDMS UPDATE surveillance test was not performed due to personnel error. The individual responsible for performing the test had just received the responsibility for maintaining the surveillance progree and had missed the requirement.to do the APDMS UPDATE test in his review of the surveillance

. schedule.

Immediate Corrective Action Upon discovery of the error, the periodic surveillance test was immediately performed and the reactor engineering surve?.11ance log was subsequently updated.

Scheduled-Corrective Action EVo corrective action scheduled.'

Actions Taken to Prevent Recurrence No further corrective actions are required.

Generic Implications There are no generic implications to this event.

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