Closeout of IE Bulletin 79-23: Potential failure of emergency diesel generator field exciter transformer

Technical Report · Thu Mar 01 04:00:00 EST 1990

OSTI ID:7172198

Foley, W J; Dean, R S; Hennick, A ^[1]

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1. Parameter, Inc., Elm Grove, WI (USA)

Documentation is provided in this report for the closeout of IE Bulletin 79-23 regarding the potential failure of emergency diesel generator field exciter transformers. Closeout is based upon the implementation and verification of three actions required by the bulletin. Evaluation of utility responses and NRC/Region inspection reports indicates that the bulletin is closed for all of the 119 nuclear power facilities with an operating license or a construction permit at the time the bulletin was issued, September 12, 1979. Deviations from bulletin testing requirements, along with licensee justifications, are listed. It is concluded that the problem of concern was not generic, since only two plants, Nine Mile Point 1 and Turkey Point, required modifications to correct connections which could cause high circulating currents. The problem at Turkey Point is described in the bulletin (see page A-1). Background information is supplied in the Introduction and Appendix A.

• Research Organization: Nuclear Regulatory Commission, Washington, DC (USA). Div. of Operational Events Assessment; Parameter, Inc., Elm Grove, WI (USA)
• Sponsoring Organization: NRC
• OSTI ID: 7172198
• Report Number(s): NUREG/CR-5289; PARAMETER/IE--180; ON: TI90008573
• Country of Publication: United States
• Language: English

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ELECTRICAL PROPERTIES
EMERGENCY PLANS
ENGINES
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FAILURE MODE ANALYSIS
HEAT ENGINES
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MODIFICATIONS
NUCLEAR FACILITIES
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