Common Cause Fault Rates for Diesel Generators: Estimates Based on Licensee Event Reports at U.S. Commercial Nuclear Power Plants, 1976-1978.

摘要

This report presents estimates of common cause fault rates and related quantities, based on Licensee Event Reports for diesel generators in nuclear reactors. The Licensee Event Report data base is described. For estimating rates, the binomial failure rate model is used, extended to allow for the substantial observed plant-to-plant variability, and for shocks that by their nature make all the diesel generators in a plant inoperable. Every quantity is estimated by both a point estimate and a 90% interval. All rates are expressed per calendar hour.