05000369/LER-1982-041

LER 82-041/03L-0:on 820513,HEPA & Carbon Absorber Filters Periodic Test Revealed That Carbon Absorber Filter on Train a of Annulus Ventilation Sys Failed to Pass Halogenated Hydrocarbon Penetration Test.Caused by Dirt in Filter

ML20054L947
Person / Time
Site:	McGuire
Issue date:	06/30/1982
From:	Nardoci P DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20054L913	List: 05000369/LER-1982-037 05000369/LER-1982-041 05000369/LER-1982-042 05000369/LER-1982-043 05000369/LER-1982-044 05000369/LER-1982-045 ML20054L912
References
LER-82-041-03L, LER-82-41-3L, NUDOCS 8207090094
Download: ML20054L947 (1)

LER-2082-041,

Event date:
Report date:
3692082041R00 - NRC Website

text

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EVENT DESCMirTION ANO PRCeASLE CONSEQUENCES @

l o t a l IPerformance of the ."In-place test of HEPA and carbon absorber filters" periodic, ITTT1 Itest revealed that the carbon absorber filter on Train A of the Annulus Ventila7 o l tion (VE) System failed to pas.s the halogenated hydrocarbon (freon) penetrationg 5

Lo_1.5_I bes t . Train A of the VE System was declared inoperable per T.S.3.6.1.8 which ;

ITTT1 Ifs renortable ner T.S.6.9.1.13(b). Although the test criteria were exceeded, g

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t o is t I filter was less than the 5% assumed in accident analysis. Health and safety of ,

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[i t o g [As a result of run time on the Ventilation System, the absorber filter's carbog U 1.LJI h ad settled, allowing bypass flow through the void left above the settled car ,

t g l bon. After adding carbon, the filter passed its freon penetration test, and thq g [ system was returned to operation on May 14, 1982. Past experience has shown ,

iii.i[that only one addition of carbon is necessary after the carbon settles. ,

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