ML20042F148

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Provides Results of Quarterly Local Leak Rate Test on Containment Purge & Vent Valves at Plant
ML20042F148
Person / Time
Site: Cooper Entergy icon.png
Issue date: 04/30/1990
From: Trevors G
NEBRASKA PUBLIC POWER DISTRICT
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NLS9000180, NUDOCS 9005070285
Download: ML20042F148 (2)


Text

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GENERAL OFFICE Nebraska Public Power District u-__--,__-,..------.+---------

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Nf419000180 April 30, 1990 l

U.S. Nuclear Regulatory Comunission Attention: Document Control Desk Washington, DC 20555

Subject:

Cont.ainment Purge and Vent Valve Imak -Testing Cooper Nuclear Station NRC Docket No. 50-298, DPR-46 Reference letter, G. A. Trevors to NRC " Containment Purge and Vent Valve Leak Testing", dated February 19, 1988 Gentlemen l

As stated in the reference letter, quarterly local leak rate tests were l-performed on the containment purge and vent valves' at Cooper Nuclear Station.

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The results of these leak rate tests and the L Impact are shown below. - These figures represent the minimum pathway leakage.

TYPR "B" and "C" 1989 1989 1989 1990 PRIMARY CONTAINNENT AS-LEFT FIRST SRCOND AS-FtXiND ISAKAGE PATHWAYS LRAKAGR' QUARTER QUARTER IJAKAGR" l X-25, Drywell Inlet 0 SCMI 0.20 SCMI 11.18 SCMI 0.IV SCMI 1

X-26, Drywell Exhaust 1.18 SCMI 0.17 SCMI 0.71 SCFil 0.10 SCMI X-205, Torus Inlet ' O.36 SCMI 0.36 SCMI 0.36 SCMI 2.19 SCFil X-220, Torus Exhaust 0.92 SCMI 0.38 SCMI 1.41 SCMI 0.475 SCMI Other, Penetrations 53.99 SCMI 55.99 SCMI 53.99 SCMI 175.51 SCMI Total (All Types B & C) 56.45 SCMI 55.10 SCMI 67.65 SCMI 178.38 SCMI -

Percent of L. 17.9% 17.4% 21.4% 56.4%

  • 1989 As-lef t from the 1989 Refueling Outage

" 1990 As-Found from the 1990 Refueling Outage 900507028D 900430 PDR P ADOCK 05000298 l PDC

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U.S. Nuclear Regulctory Comunic3 ion

_o . April 30, 1990 Page 2-If you have any questions, please call.

Sincerely, Division Manager Nuclear Support GAT /gra:jw cc: U.S. Nuclear Regulatory Canunission Region IV Arlington, TX NRC Resident Offico Cooper Nuclear Station 1

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