05000301/LER-1993-004, Forwards LER 93-004-00 for Pbnp Re Operability Concern for Containment Accident Fan Bearing

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Forwards LER 93-004-00 for Pbnp Re Operability Concern for Containment Accident Fan Bearing
ML20058J752
Person / Time
Site: Point Beach NextEra Energy icon.png
Issue date: 12/06/1993
From: Link B
WISCONSIN ELECTRIC POWER CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20058J755 List:
References
CON-NRC-93-131 VPNPD-93-207, NUDOCS 9312140224
Download: ML20058J752 (1)


LER-2093-004, Forwards LER 93-004-00 for Pbnp Re Operability Concern for Containment Accident Fan Bearing
Event date:
Report date:
3012093004R00 - NRC Website

text

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. Wisconsin lElectnc POWER COMPANY l 231 w Mchoon. PO Box 2046 Mdwoukee.WI 53201-2046 (4W 221-2345 l VPNPD-93-207 NRC-93-131 December 6, 1993 Document Control Desk U.S. NUCLEAR REGULATORY COMMISSION Mail Station F1-137 Washington, DC 20555 Gentlemen:

l DOCKET 50-301 I LICENSEE EVENT REPORT 93-004-00 OPERABILITY CONCERN FOR CONTAINMENT ACCIDENT FAN BEARING POINT BEACH NUCLEAR PLANT. UNIT 2 ,

Enclosed is Licensee Event Report 93-004-00 for Point Beach Nuclaar Plant, Unit 2. This report describes the discovery of a part in a containment accident fan bearing that caused the operability of the fan during accident conditions to be questioned. Specifically, a bearing removed from Unit 2 containment accident fan W1D1 was iden-tified as having a cage (retainer) made from fiberglass reinforced Type 66 nylon instead of bronze or steel. The bearing was replaced with one containing a bronze cage.

An evaluation was performed to determine the operability of the containment accident fan with a nylon cage in the fan bearing. The evaluation provided reasonable assurance that the fan would. perform its safety function during accident conditions and, therefore, was judged to be operable. A review of receipt inspection documenta-

, tion associated with the bearings currently installed on all l

containment accident fans at Point Beach Nuclear Plant confirmed that there are no containment accident fan bearings presently I installed that have cages made of nylon.

Although the containment accident fan was judged to be operable, this report is provided as an informational Licensee Event Report as this information may be of interest to other licensees.

Please contact us if there are any questions.

Sincerely, .

150r

/' 5

' Bob Link

{k Vice President Nuclear Power 9312140224 DR 93120 F ADDCK 05000301 Vh \

PDR *"i '

cc: NRC Resident Inspector NRC Regional Admingj g o g g m.g,pg

. - _ .