Safety enhancement program at the advanced test reactor

The Advanced Test Reactor (ATR) is a 250-MW(thermal) research reactor that has operated very successfully at the Idaho National Engineering Laboratory since 1969. It is the third generation of uranium-aluminum plate fueled reactors, following the Materials Testing Reactor and the Engineering Test Reactor. Prior programs to improve the safety and performance of the ATR have included changes in design and operating standards, facility modifications, and enhancements in the training program. Nevertheless, further improvements are possible. The purpose of this paper is to provide an overview of the current programs at the ATR that will enhance the safety of the facility and maintain it a level that is comparable to the commercial industry