The SHIELD passive thermal shutdown seal protects a nuclear plant’s reactor core by preventing loss of reactor coolant system water inventory should an event occur that causes a loss of all reactor coolant pump seal cooling. The SHIELD seal requires no operator action, power or control logic and is activated by heated reactor coolant.

“Our US utility customers have recognized that the SHIELD shutdown seal offers additional levels of safety and reliability,” said Nick Liparulo, senior vice president, Westinghouse Nuclear Services. “Electricity demand is growing globally and we are confident that customers outside the United States soon will be choosing the product to support the reliable delivery of clean, safe nuclear energy.”