ML20044D772

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Updates Info in Re post-overhaul Testing of Turbine Generator to Assess Reliability of Gas Turbine.Table Listing Gas Turbine G-05 Start & Load Reliability Data Base (pre-1992 Overhaul) Encl
ML20044D772
Person / Time
Site: Point Beach  NextEra Energy icon.png
Issue date: 05/14/1993
From: Link B
WISCONSIN ELECTRIC POWER CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
CON-NRC-93-061, CON-NRC-93-61 TAC-M68586, TAC-M68587, VPNPD-93-102, NUDOCS 9305200261
Download: ML20044D772 (6)
v • d • e


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Wisconsin lih>CtHC Pon:R COMPARY I

231 W fAcNgan. PO for 2046 the.A9e.VA 53201 (414)224-2345 VPNPD-93-102 NRC 061 i

May 14, 1993 Document Control Desk 10 CFR 50.63 i

U.S.

NUCLEAR REGULATORY COMMISSION Mail Station P1-137 Washington, DC 20555 i

i Gentlemen:

DOCKETS 50-266 AND 50-301 SUPPLEMENT TO 10 CFR 50.63. TAC. NOS. 48586 ANDPE8587 LOSS OF ALL ALTERNATING CURRENT POWER 1

POINT BEACH-NUCLEAR PLANTS. UNITS 1 AND 2 In a letter dated March 5, 1993, we provided additional information about post-overhaul testing of the Point Beach Gas Turbine Generator.

The March _5, 1993, letter stated that the gas turbine reliability.was about 88%'and increasing.

In a_ meeting with Nuclear Regulatory-Commission Office of. Nuclear Reactor Regulation personnel at White Flint on May 3, 1993, it'was determined that another update would help-NRC-NRR personnel assess the reliability of the gas turbine.

This letter provides this update.

An additional 12 successful countable tests have been completed since our March 5, 1993, submittal (see the attached Gas' Turbine Start and Load Reliability Database).

The cumulative post-l overhaul reliability of the gas turbine is about 91% and increasing.

The last failure occurred on January 7, 1993.

The l

twentieth consecutive successful countable test was completed on May 6, 1993.

Thirty-eight successful countable tests have been completed since post-overhaul reliability testing began on October 27, 1993.

We believe the reliability program that we have implemented for the gas turbine is being used effectively.

In addition, we believe that having no failures in.the.last 20 countable. tests indicates that the current gas turbine reliability is at or above 95%.

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Document Control Desk Hay 14, 1993 Page 2 i

We would be pleased to answer any questions you may have concerning the Point Beach Gas Turbine Generator.

Sincerely,

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O Bob Link Vice President Nuclear Power CAC/jg Attachments cc:

NRC Regional Administrator, Region III NRC Resident Inspector

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