05000369/LER-1982-042

LER 82-042/03L-0:on 820519,HEPA & Carbon Filters Periodic Test Revealed That HEPA after-filters on Train B of Annulus Ventilation Sys Failed to Pass Dioctyl Phthalate Penetration Test.Caused by Dirt in Filter

ML20054L982
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-82-042-03L, LER-82-42-3L, NUDOCS 8207090122
Download: ML20054L982 (1)

LER-2082-042,

Event date:
Report date:
3692082042R00 - NRC Website

text

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> e ei oocnernom en as en avearoare 14 is asecar oare se EVENT ogsCnenoN AND PMoeASLE CONSEQUENCES to g l Performance of the."In-place test of HEPA and carbon absorber filters" periodic, ITTT1 ltest revealed that the HEPA af ter-filters on Train B of the Annulus Ventilation i o 4 [vstem (VE) failed to pass their dioctyl phthalate (DOP) penetration test. Trait}

m IB of the VE System was declared inoperable per T.S.3.6.1.8 which is reportable _;

lotel!ner T.S.6.9.1.13(b). Although the test criteria were exceeded, the acceptance ,

g [ values are ' extremely conservative, and maximum leakage through the filters was ,

LoLa.j11ess than the 5% assumed in accident analysis. Health and safety of the public g a

eswere unati g d. se ecos - *$E sis $Es consoment cooe suSEo*o. E'J' .

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i t ig lZ [9 l 9 l 9lg CAUSE DESCRIPTION ANQ CORREC"MVE AC7tgM3 77 i n t a g [rwo of the six filters failed. t is suspected that a small piece of carbon or ,

g la particle'of dirt may have punctured the filters (a small black spot svas ob- ,

g 1 served on the face of one of the filters-due to the stringent requirements of ,

ii i2: Ithe filters test, a pinhole in the filter could cause it to fail). After the ,

1i14 i Itwo filters were replaced, the filter bank passed its DOP penetration test and, i e swas declared operaole on May 21 19oz. ,,

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Naus ca nnerugn Phillip B. Nardoci 704-373-7432 8207090122 820630

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