05000321/LER-1981-037-03, /03L-0:on 810421,control Room Filter Train Found Inoperable Due to Charcoal Inability to Remove 90% of Methyl Iodide.Caused by Paint Fumes Passing Through Filter Train When Sys Was in Recirculation Mode.Charcoal Replaced

/03L-0:on 810421,control Room Filter Train Found Inoperable Due to Charcoal Inability to Remove 90% of Methyl Iodide.Caused by Paint Fumes Passing Through Filter Train When Sys Was in Recirculation Mode.Charcoal Replaced

ML20004B417
Person / Time
Site:	Hatch
Issue date:	05/21/1981
From:	Coggin C GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20004B416	List: 05000321/LER-1981-037, Forwards LER 81-037/03L-0 05000321/LER-1981-037-03, /03L-0:on 810421,control Room Filter Train Found Inoperable Due to Charcoal Inability to Remove 90% of Methyl Iodide.Caused by Paint Fumes Passing Through Filter Train When Sys Was in Recirculation Mode.Charcoal Replaced
References
LER-81-037-03L-01, LER-81-37-3L-1, NUDOCS 8105280209
Download: ML20004B417 (2)

LER-1981-037, /03L-0:on 810421,control Room Filter Train Found Inoperable Due to Charcoal Inability to Remove 90% of Methyl Iodide.Caused by Paint Fumes Passing Through Filter Train When Sys Was in Recirculation Mode.Charcoal Replaced

Event date:
Report date:
3211981037R03 - NRC Website

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ta iVE NT DATE 74 75 31E f'OH T D AT E tio EVENT DESCitlPiloN AND PRODABLE CONStoUENCES h L0n 4-21-81, wi th Uni t 1 shutdown for a ref ueling/ torus modi fication out-l O a 10131 gqe it was determined that a charcoal sample taken from control room l

Ifil te r train Z41-D004B when tested per HNP-1-397S, " Testing of CR and I

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ISBGT Filter by Vendor", had not met the 90% methyl iodide removal as i

o s 101c 1 [r_e_q u i re d by HNP-1 Tech Specs 3.1.2.A.2 and HNP-2 Tech Specs 4.7.2.C.2 I

. rTIT] [( 77. 9 % a c t u al removal).

This is a nonrepetitive event for this syste_m. I I O la l IThere were no effects upon public heal th and safety as a result of this event. I 60 7

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33 34 35 30 31 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h IThe failure of 'the control room filter train 1241-D004B was due to the I

i O 11111Icharcoal's inability to remove 90% of methyl iodide from a laboratory I

li 121 lanalysis of representative sample.

The f aulty charcoal was removed 1

lilal land replaced by new charcoal of which a sample was sent offsite for

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' li te l llab analysis of methyl iodide removal.

IZ41-D004B passed the test at 99.4%. l 90 l7 8 9 s1 A S

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cl LER #: 321/1931-037 Licensec:

Georgia Power Company Facility Name:

Edwin I. Ilatch Docket #:

50-321

Narrative

Report for LER 50-321/1981-037 On 4-21-81, with Unit 1 in cold shutdown for a refueling and torus' modification outage, a laboratory analysis of a charcoal-sampic taken frou control room filter train Z41-D004B was found to remove 77.9% of methyl iodide instead of the 90.0%

requited by llNP-1 Tech Specs 3.1.2.A.2 and llNP-2 Tech Specs 4.7.2.C.2..

The faulty charcoal was removed and rep? aced. by new charcoal.

The new charcoal was tested por HNP-1-3975,

" Testing of Control Room and SBGT Filter Train by Vendor", and passed the DOP and Icakage test.

A charcoal sampic was sent offsite for a laboratory analysis for methyl iodide removal.

The charcoal passed the test with 99.4% methyl iodido remov-al.

The failure of the original charcoal was apparently due to paint fumes passing through. the filter trains while the control room ventilation system was in the recirculation mode.

1Z41-D004A was tested on 3-19-81, and was certifica according to llNP-1-3975 ~on.4-22-81.

This is a nonrepetitive event for this system with no effects upon public health and safety.

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