05000260/LER-1980-015-03, /03L-0:on 800309,during Startup,Rod Block Monitor a Was Bypassed for More than 24-hrs in 30-day Period.Caused by Need for Calibr & Maint.Channel Recalibr,Tested & Returned to Svc

/03L-0:on 800309,during Startup,Rod Block Monitor a Was Bypassed for More than 24-hrs in 30-day Period.Caused by Need for Calibr & Maint.Channel Recalibr,Tested & Returned to Svc

ML18024B483
Person / Time
Site:	Browns Ferry
Issue date:	04/07/1980
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18024B482	List: 05000260/LER-1980-015, Forwards LER 80-015/03L-0 05000260/LER-1980-015-03, /03L-0:on 800309,during Startup,Rod Block Monitor a Was Bypassed for More than 24-hrs in 30-day Period.Caused by Need for Calibr & Maint.Channel Recalibr,Tested & Returned to Svc
References
LER-80-015-03L-01, LER-80-15-3L-1, NUDOCS 8004150522
Download: ML18024B483 (4)

LER-1980-015, /03L-0:on 800309,during Startup,Rod Block Monitor a Was Bypassed for More than 24-hrs in 30-day Period.Caused by Need for Calibr & Maint.Channel Recalibr,Tested & Returned to Svc

Event date:
Report date:
2601980015R03 - NRC Website

text

"NR~ORMPB

{7 7g)

~ 'I CLEAR REGULATOSBV SS9MMISSION [oat 7

8 CON'T 7

8 LICENSOR EVENT OLCOTT CONTROL BLOCK:

Qi (PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION)

I 6

A L

B R

9 2Q2 0

0 -

0 0

0 0

0 -

0 0

Q2 4

1 1

1 1 Q4~Q4 9

LICENSEE CODE 14 LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 09

~LQB 5

0 0

0 2

6 0

7 0

3 0

9 8

0 8

0 4

0 I DOCKET NUh'IBER 68 69 EVENT DATE 74 15 REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Qlo During startups above 30X power, rod block monitor "AH was b s.

80 than 24-hours in a 30-day period (2/ll/80- 3/10/80) for calibration and mai

~D4 1 ~os

~os in violation of T.S.3.2.C, table 3.2.C, note 7C.

Redundant channel w s There was no hazard to the public health or safety.

There have been no

previous occurrences

~08 80 7

8 7

8 9

SYSTEM

CAUSE

CAUSE CohlP.

VALVE CODE

'ODE SUBCODE COMPONENT CODE SUBCODE SUBCOOE

~OB Orr

~B Orr

~B Or2 1

N S

T R

0 Or4

~S QIS

~S Or2 9

10 11 12 13 18 19 20 SEOUEN7 IAL OCCURRENCE REPORT REVISION I F BUBO EVENT YEAR REPORT No.

CODS TYPE ND, On 44ro4r

~SO

~

~01 5

~W LUUI

~L 21 22 23 24 28 21 28 29 30 31 ACTION FUTURE EFF ECT SHUTDOWN ATTACHMENT NPBDP PRIhlE CohlP, COAIPONENT TAKEN ACTION ON PLANT METHOD HOURS

+22 SUBMITTED FORhl SUB.

SUPPLIER MAIJUFACTURER QrS ~BQr2

~BQ20 '"

~O>>

~O24 M>O>>>>

9 9

C 33 34 35 36 31 40 41 42 43 44 41 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 On 2/11/80 bypass time was 10 hrs channel calibrated fu i

returned to service.

On 2/13/80 b

ass time was 1.65 h s

repaired, functionally tested and returned to service.

On 3

9 80 b

'I 3

14,58 hrs, RCL elec switch mod 300 was repaired channel calibrate a

to service.

No recurrence control action is lanned.

CK 022 ~03 4 Q>>

NA 7

8 9

10 12 13 44 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQ35 QQQ ~Z Q33

~ZQ3 NA 1

8 9

10 PERSONNEL EXPOSURES NUMBER TYPE-DESCRIPTION Q39 EZ ~JOB'L~JO>>

NA 1

8 9

11 12 13 PERSONNEL INJURIES

~AQ3I 45 46 44 45 1

8 9

ACILI1 Y

~30 MsnlOD OF STATUS

'4 POWER OTHER STATUS ~

DISCOVERY NA LOCATION OF RELEASE QB DISCOVERY DESCRIPTION Q32 0 erator observed 80 80 80 80 7

8 7

8 o

1 8

9 I I 12 LOSS OF OB DAMAGE To FACILITY 43 TTPE

DESCRIPTION

WQ42 9

10 PUBLICITY ISSUED DESCBII'TION~

9 10 NAME OF PREPARER PHONE 68 69 80 80 NRC USE ONLY 44 80 42 0n 8 0 0 4 1 5 0 5~ 42I4,

t

.. Tennessee VaHcy Authority Browns Ferry Nuclear Plant Form QF-iV QP lc I/10/79 LER SUPPLEMENTAL INFORMATION BFRO 260 / '>5 Technical Specification Involved Reported Under Technical Specification 6

7 2 b(2)

Date of Occurrence 3/9/g0 Time of Occurrence 235>

Unit

~

"~**

"'od block monitor "A" was bypassed for more than 24-hours in a.30-day period.

Conditions Prior to Occurrence:

U-1 refueling U-2 8 34%

U-3 8 100%

Action specified in the Technical Specification Surveillance Requirement.:

m..t.

~ due to ino erable eouioment.

Describe.

None A

arent Cause of Occurrence:

Calibration and maintenance activities re'suited in downtime in excess of 24-hours in a 30-day period.

Anal sis of Occurrence:

There was no damage to plant equipment.

There was no activity released, no personnel

.exposure or injury and no danger to the public health and safety.

Corrective Action

Replaced defective component, repaired cold solder )oint and recklibrated.

Outage time on rod block monitors are tracked and reviewed daily by the Fiant Operations Review Committee.

V Failure Data:

None

• Reten tion:

I'Revision:

eriod - Lifetime; Responsibility

- Administrative Supervisor

p t

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