Review of Resolution of Known Problems in Engine Components for TransAmerica DeLaval, Inc. Emergency Diesel Generators.

摘要

The Pacific Northwest Laboratory (PNL) has provided technical support to the U.S. Nuclear Regulatory Commission (NRC) staff in addressing questions regarding the adequacy of Transamerica Delaval Inc. (TOI) diesel generators used to provide standby power for safety-related systems in several nuclear power plants. These questions stemmed from a crankshaft failure in a TOI diesel engine at the Shoreham Nuclear Power Station in August 1983, and from less serious problems with TDI diesels at other nuclear power plants. The scope of PNL's effort encompassed reviews of TOI engine-related information submitted to NRC by the TOI Diesel Generator Owners' Group and by individual licensees, and reviews of disassemblies and inspections of TD1 engines at nuclear power plants. Participants in this effort included consultants to PNL who have substantial experience in diesel engine technology. This report documents PNL's reviews of the resolution of problems identified by the Owners' Group in 16 components of TDI engines. PNL also addressed these components in earlier technical evaluation reports on Tnl engines at seven nuclear power plants, and in several reports on the components themselves. Because this report reflects PNL's evaluation of all of the information that became available on the 16 components during these reviews. the conclusions and recommendations documented herein supersede any conflicting conclusions and recommendations in the PNL reports issued earlier.