ML18024A613

LER 78-022/03L-0 on 781202:reactor,turbine Bldg & Refueling Zone Ventilation Exhaust monitor,RM-90-250,became Inoperable.Caused by Moisture Collected in Sampling Line of Monitor

ML18024A613
Person / Time
Site:	Browns Ferry
Issue date:	12/27/1978
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18024A612	List: ML18024A611 ML18024A613
References
LER-78-022-03L-01, LER-78-22-3L-1, NUDOCS 7901040127
Download: ML18024A613 (3)

Text

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LICENSEE EVENT REPORT CONTROL BLOCK: (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

~OOI IA8 9 L B LICENSEE CODE R ~

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I4 Q2 15 0 0 0 6

0 0 0 LICENSE NUh18ER 0 0 OQR 25 4

26 "

1 1 LICENSE TYPE 1 1 JO OR~OR 57 CAT 58 CON'T R"DRT

~DI ~LQ60 5 0 0 0 2 6 0 68 Qj 69 2 0 EVENT DATE 2 7 8 74 QB 75 1 2 2 REPORT DATE 7 7 8 80 QQ9 60 61 DOCKET NUMBER EVENT DESCRIPTION AND PROBABI.E CONSEQUENCES QIO During normal operation, reactor turbine bui F

~03 haust moni tor, RM-90-250, became inoperab 1e (T. S ~ 3 . 8 ~ B. 8) . There are no redundant systems. Grab samples were taken by the Chemical Laboratory and analyzed hourly.

There was no hazard to the pub 1 c hea 1 th or saf ety. i Prev ious occurrence: 50-260/78 20

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SYSTEM CAUSE CAUSE Coh1P VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCOOE

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12 13 1 N 3 2 R 0 18 QiR ~ZQ15 19

~ZQi5 20 SEQUENTIAL OCCURRENCE REPORT REVISION On LER1RO RRtoRr ACTION FUTURE EVENT YEAR

~78 21 22 EFFECT

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23 SHUTDO1'IN

~02 74 REPORT No.

2 26

+W 27 ATTACHE6 RI7

~03 28 CODE 29 NPR O~

TYPE

+1 30 31 PR I 51 6 CO'MP.

No.

32 COI"IPONENT TAKEN ACTION QJQIB 33

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34 QIB ON PLANT QJQ20 35 METHOD QJQ21 36 37 HOURS Q2 40

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SUB 11TTEO 41 Q23 FORhl SUB.

~Q24 42 SUPPLIER

~L 43 Q26 44 MANUFACTURER

~ 3 0 5 47 Q26 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 Moisture collected in the sampling line of the monitor as a result of abnormal OTIera-tion of the steampacking exhauster which causes high humidity in the exhauster room.

The sampling line was dried and will be purged regularly until the steam packing ex-3 hauster is repaired

~14 80 7 8 9 FACILITY STATUS 'OlVER OTHER STATUS Q h1ETHOO OF DISCOVERY DISCOVERY DESCRIPTION Q32 2 ORR ~Oe 0 OR NA ~AQ3) 7 8 9 10 12 13 44 45 46 80 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITY

~1'A Q LOCATION OF RELEASE Q 6 ~2 Q33 ~2Q34 7 8 9 'IO 11 45 80 PERSONNEL EXPOSURES NUMBER TYP DESCRIPTION Q39

~00 0 Qil ~ZORR

'I NA 80 7 8 9 I 12 13 PERSONNEL INJURIES 7 8 9 11 12 80 LOSS OF OR DAMAGE To FACILITY TYPE DESCRIPTION Q43 NA 9 ~ZQ2 7 8 9 10 80 PUBLICITY NRC USE ON L Y V~0%04O<+ ~5 7 8 9 10 l'AME 68 69 80 $

0 OF PREPARER PHONE:

Eorm BF-17 BF 15.2 6/09/78 LER SUPPLEi>IENTAL INFORNATION BFRO 260/ 7822 Technical Specification Involved 3.8.B.8 Reported Under Technical Specification 6. 7.2.b(2)

Date of Occurrence l2/2/78 Time of Occurrence 1800 Unit 2 Identification and Description of Occurrence:

2-191-90-250 failed due to moisture in the sampling system.

Conditions Prior to Occurrence:

Unit at full load 2-191-90-250 operating normally.

Action specified in the Technical Specification Surveillance Requirements met due to inooerable eaui ment. Describe.

, Notified chemical lab to begin sampling.

A arent Cause of Occurrence:

Hositure in sample line. caused by abnormal operation of steam packing exhauster.

Anal sis of Occurrence:

None Corrective Action:

Purging sample line on a regular, schedule to prevent moisture buildup. Purging will continue until steam packing exhauster can be operated normally.

Failure Data:

BPRO-50-260/7820 Tennessee Va~Jey Authority - Brown Ferry Nuclear Plant