05000259/LER-1980-071-03, /03L-0:on 800919,continuous Air monitor,RM-90-250, Declared Inoperable as Iodine Channel Indicated Downscale. Caused by Condensation in Model AM-331F (Bf) Sample Line. Moisture Removed & Sys Returned to Svc

/03L-0:on 800919,continuous Air monitor,RM-90-250, Declared Inoperable as Iodine Channel Indicated Downscale. Caused by Condensation in Model AM-331F (Bf) Sample Line. Moisture Removed & Sys Returned to Svc

ML19338F481
Person / Time
Site:	Browns Ferry
Issue date:	10/14/1980
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19338F477	List: 05000259/LER-1980-071, Forwards LER 80-071/03L-0 05000259/LER-1980-071-03, /03L-0:on 800919,continuous Air monitor,RM-90-250, Declared Inoperable as Iodine Channel Indicated Downscale. Caused by Condensation in Model AM-331F (Bf) Sample Line. Moisture Removed & Sys Returned to Svc
References
LER-80-071-03L-01, LER-80-71-3L-1, NUDOCS 8010200417
Download: ML19338F481 (2)

LER-1980-071, /03L-0:on 800919,continuous Air monitor,RM-90-250, Declared Inoperable as Iodine Channel Indicated Downscale. Caused by Condensation in Model AM-331F (Bf) Sample Line. Moisture Removed & Sys Returned to Svc

Event date:
Report date:
2591980071R03 - NRC Website

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$ LVENT DFSCHIPTION AND PA08 A8LE CONSEQUENCES h l M l Durine normal overation. continuous air monitor. RM-90-250. for the reactor building i d

g i ventilation was declared inoperable due to the iodine channel indicating downscale l

l l o I A l I (T.S. 3. 8. B. 8). There was no effect on the public health or safety.

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I l 'loIsl 1 redundant system. -Previous Events : 259/8038, 259/8032, 259/7924, 259/796, 259/795, l

E I 259/7614. 260/7822 and 260/7820.

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' CAU3E DESCR PTION ANO CORRECTIVE ACTIONS.i 1ilol l Water had collected in the Model AM-331F(BF) sample line due to condensation.

I L,Li_j ! Chemical Laboratorv initiated a sampling program. The moisture was removed and CAM i

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Form BF-17 Browns Ferry Nuclear Plant BF 15.2 1/10/79 LER SUPPLEMENTAL INFORMATION 3.8.B.8

~ BFRO 259 / '8071 Technical Specification Involved.

Reported Under Technical Specification

6. 7. 2.b (2 )

Date of Occurrence 9/19/80 Time of Occurrence 1800 Unit 1

Identification and Description'of Occurrence:

I Continuous air monitor 1-90-250 for the reactor building ventilation'was declared inoperable due to the iodine channel indicating down scale.

l Conditions ' Prior to Occurrence:

Lhit 1 at 97 We Lbit 2 - refuelinF Unit 3 at 89% We Action specified in the Technical Specification Surveillance Requirements met due to inoperable equipment. Describe.

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Temporary sampling was initiated by the Chemical Laboratory.

l Apparent Cause of Occurrence:

Moisture collected in sample lines due to condensation.

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' Analysis of Occurrmee:

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

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Corrective Action

The moisture was removed from the sample line, the CAM was functionally tested and returned to service. Desigtt' change request.(DCR) 2127 will add heat traces to the sample lines to prevent condensv: ion.

Failure Data:

i 259/8038, 259/8032,' 259/7924, 259/796, 259/795, 259/7614, 260/7822 and 260/7820.

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