05000260/LER-1980-036-03, /03L-0:on 800829,while Performing S.I.4.7.4, H2E76-39 Hydrogen Monitor for Drywell Would Not Calibr. Caused by Sensor Type 47E22642862 Failure.Sys Will Be Replaced

/03L-0:on 800829,while Performing S.I.4.7.4, H2E76-39 Hydrogen Monitor for Drywell Would Not Calibr. Caused by Sensor Type 47E22642862 Failure.Sys Will Be Replaced

ML18025B086
Person / Time
Site:	Browns Ferry
Issue date:	09/26/1980
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18025B085	List: 05000260/LER-1980-036, Forwards LER 80-036/03L-0 05000260/LER-1980-036-03, /03L-0:on 800829,while Performing S.I.4.7.4, H2E76-39 Hydrogen Monitor for Drywell Would Not Calibr. Caused by Sensor Type 47E22642862 Failure.Sys Will Be Replaced
References
LER-80-036-03L-02, LER-80-36-3L-2, NUDOCS 8009300554
Download: ML18025B086 (3)

LER-1980-036, /03L-0:on 800829,while Performing S.I.4.7.4, H2E76-39 Hydrogen Monitor for Drywell Would Not Calibr. Caused by Sensor Type 47E22642862 Failure.Sys Will Be Replaced

Event date:
Report date:
2601980036R03 - NRC Website

text

LICENSEE EVENT REPORT CONTROL BLOCK:

QI

{PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION)

I 6

[0D1]

~

L 3

o 2

2 Q2 o

o o

o o

o o

o o

Q3 4

3 3

3

> Q4~I 8

9 LICENSEE CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 CON'T

~OI

~LQB 0

5 0

0 0

2 6

0 7

0 8

2 9

8 0

B g

9 2

6 8

0 QB 7

8 SOURCE 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES QIO

~o 2

Durin normal o eration while erformin SI 4.7.II, the H'H-76-39 hydrogen monitor

~O3

~O4 t

~DS for the drywell would not calibrate.

(T.S. 3.7.H).

Redundant H %76-37 hydrogen analyzers were operable.

There was no hazard to the public health or safety.

Previous event:

50/259/7930.

~os

~OB 7

8 9

80 SYSTEM

CAUSE

CAUSE

CohIP, VALVE CODE CODE SUBCODE

'OMPONENT CODE SUBCODE SUBCODE

~oo Q11

~EQTE

~Ebs z

N s

T "04

~Oi~

~3 DE 7

8 9

10 11 12 13 18 19 20 SEQUENTIAl OCCURRENCE REPOIIT REVISION LFRIRO EVENT YEAR REPORT NO.

CODE TYPE NO.

QTT REPQRT

~9P

~

~O1 6

~W

~O3, ~L

~

O 21 22 23 24 26 27 28 29 30 31 32 ACTION FUTURE FFFECT SHUTDOWN ATTACHMENT NPRD 4 PRIh'IE COMP, COMPONENT TAKEN ACTION OII PI.ANT METHOD HOURS 'Q SUBMITTED FORM5UB.

SUPPLIER MANUFACTURIR

~Q>>~G'O>>

~O"

~Q>>

~O2'JO>>

33 34 35 36 37 40 41 42 43

~ 4 47 CAUSE DESCRIPTION ANDCORRECTIVE ACTIONS Q2>

o Sensor t e 47E226428G2, instruments H E"76-39 and H E-67-39A failed.

Sy'tem is to be re laced b

a new design durin the refueling outage in progress at this time.

7 8

9 F ACII.ITY STATUS 11 POWER OTHER STATUS Q O'

NA os~osoy 7

8 9

10 12 13 44 ACTIVITY CONTENT RELEASED OF RELEASE AMOUhIT OF ACTIVITYQ 6

~Z 033

~ZQ34 NA 7

8 9

10 44 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q3B

~It ~00 0

Q3> ~Z Q38 NA I

8 9

I'I 12 13 PERSONNEL INJURIES NUMBER OESCRIPTIONQ41 3

~OO O

Q4O

,NA METHOD OF DISCOVERY DISCOVERY DESCRIPTION Q32

~BQ31 Surveillance test ing 45 LOCATIONOF RELEASE Q36 NA 45 80 80 80 80 7

8 9

11 12 LOSS OF OR OAMAOE To FACILITYQ43 TYPE

DESCRIPTION

[i'z l(.r)

NA 7

8 9

10 PUBL ICI TY ISSUED OESCRIPTI(7N ~4

~NQ44 NA 8

9

~ 10 gO NAME OF PREPARER PHONE:

68 69 80 80

~

NRC USE ONLY 2

80 C\\

Tennessee Valley Authority

~

Browns Ferry Nuclear Plant H

Form BF-17 BF 15.2 1/10/79

. LER SUPPLEMENTAL INFORNATION BFRO 260 /

8036 Technical Specification Involved Reported Under Technical Specification Date of Occurrence 8/29/

Time of Occurrence 4.7.H PUnit ~

Identification and Descri tion'of Occurrence:

H M -26<<39 would not calibrate properly..

2 Condition's 'Prior to Occurrence:

U-1 at 97%

MWe U-2 at 90% MWe.

U-"3 at 100%

MWe

Action specified in the Technical Specification Surveillance Requirements met due to ino erable e ui ment.

Describe.

None A

arent Cause of Occurrence:

Both the primary and secondary.sensors, H E 39 and H p-76-39A failed.

2 2'.

Anal sis of Occurrence:

There was no damage to the plant equipment; There was no 'activity release, no personnel exposure or injury and no danger to the health or safety of the public.

Corrective Action

The unit was shutdown on 9/5/80 for refueling.

The hydrogen analyzing system wi'll be changed to a new designed system while the unit is down.

Failure Data:

259/7930, 260/7923, 296/796, 259/7815 and 260/7821.

~Retention:

eriod - Lifetime; Responsibility - Administrative Supervisor

• Revision: