Safety-Related Equipment Survival in Hydrogen Burns in Large Dry PWR (Pressurized Water Reactor) Containment Buildings,

摘要

Analytical and experimental investigations of equipment survival in hydrogen burns in large dry PWR containment buildings have been conducted. Both atmospheric and subatmospheric containments were considered. Two sets of analytical studies were carried out for atmospheric large dry containments. One set analyzed the hydrogen burn that occurred as a result of the March 1979, accident at Three Mile Island. The other set considered a hybrid power plant consisting of the Zion reactor housed in the TMI-2 containment building. An analytical study of subatmospheric containments was also carried out using a model of the Surry nuclear power plant. To complement the analyses, a series of experiments simulating hydrogen burns in large dry containments was also conducted using the Sandia severe combined environment test chamber (SCETCh). The experiments investigated the survivability of thermally and radiation aged nuclear qualified Brand Rex power and control cable and a Barton 763 pressure transmitter in a simulated LOCA/hydrogen burn environment.