Small modular reactors are less likely to suffer from a total power loss that was among the main causes of the nuclear crisis in Japan, developers said during the Platts Small Modular Reactors conference. NuScale Power's 45-megawatt units depend on natural circulation for backup cooling instead of coolant pumps, said Chief Marketing Officer Bruce Landrey. Passive cooling is part of Babcock & Wilcox's mPower design, but "our whole principle of safety is defense-in-depth," said Jeffrey Halfinger, vice president of technology development.

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