05000259/LER-1998-001, Forwards LER 98-001-00 Re Failure to Meet Requirements of ANSI Stds N510-1975, Testing of Nuclear Air Cleaning Sys, During Performance of Standby Gas Treatment Sys Surveillance Testing

Forwards LER 98-001-00 Re Failure to Meet Requirements of ANSI Stds N510-1975, Testing of Nuclear Air Cleaning Sys, During Performance of Standby Gas Treatment Sys Surveillance Testing

ML20247K145
Person / Time
Site:	Browns Ferry
Issue date:	05/13/1998
From:	Crane C TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20247K147	List: 05000259/LER-1998-001, Forwards LER 98-001-00 Re Failure to Meet Requirements of ANSI Stds N510-1975, Testing of Nuclear Air Cleaning Sys, During Performance of Standby Gas Treatment Sys Surveillance Testing
References
NUDOCS 9805220028
Download: ML20247K145 (2)

LER-2098-001, Forwards LER 98-001-00 Re Failure to Meet Requirements of ANSI Stds N510-1975, Testing of Nuclear Air Cleaning Sys, During Performance of Standby Gas Treatment Sys Surveillance Testing

Event date:
Report date:
2592098001R00 - NRC Website

text

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t' Tennessee Valley Authority, Post office Box 2000. Decatur, Alabama 35609-2000 j Christopher M. (Chris) Crane Vos President. Browns Ferry Nuclear Plant May 13. 1998 i

f U.S. Nuclear Regulatory Commission 10 CFR 50.73 ATTN: Document Control Desk Washington, D. C. 20555

Dear Sir:

BROWNS FERRY NUCLEAR PLANT (BFN) -

UNITS 1, 2, AND 3 - DOCKET c 'NdS. 50-259, 260, AND 296 - FACILITY OPERATING LICENSE DPR-33, 52,.and 68 - LICENSEE EVENT REPORT (LER) 50-259/ 1998-001-00 The enclosed report provides details concerning a failure to meet the requirements of American National Standards Institute . (ANSI) Standard N510-1975, Testing of Nuclear Air Cleaning Systems, during.the performance of Standby Gas Treatment . (SGT) . System surveillance testing. . Technical Specification (TS) _3.7.B.2.a states that SGT high efficiency particulate air (HEPA) filter performance testing shall-be performed in accordance with ANSI N510-1975'. The. standard prescribes air-aerosol distribution criteria for dioctyphthalate (DOP) challenge aerosol' upstream and-downstream of the HEPA filter under test.

~Although TVA has determined that the DOP distribution criteria of~the ANSI standard were not met by the Surveillance Instruction, subsequent testing has confirmed that the SGT HEPA filters meet the leakage requirements-of the TS.

.TVA is reporting this event in pursuant to 10' CFR 50.73 (a) (2) (i) (B), as a condition prohibited by plant Technical Specifications.

l Sincerely, j I

,; o n .,

L hI p u v99 g 1

! C. M. rane. 5

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l nclosure <

}- cc: See page 2 9905220020 990513

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PDR ADOCK 05000259  ;

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U.S. Nuclear Regulatory Commission Pege 2 Ma/ 13, 1998 Enclosure cc (Eaclosure):

Mr. A. W. De Agazio, Project Manager . .

U.S. Nuclear Regulatory Commission One White Flint, North 115E5 Rockville Pike Rockville, Maryland 20852 Mr. Harold O. Christensen, Branch Chief U.S. Nuclear Regulatory Commission Region il 61 Forsy?.h Street, S. W.

Suite 23T95 Atlanta, Georgia 30303 NRC Residenc. Inspector Browns Ferry Nuclear Plant 10833 Shaw Road Athens, Alabara 35611 l

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