Mitsubishi Heavy Industries (MHI) has received orders from two US electricity companies for the supply of four replacement reactor vessel closure heads for pressurised water reactors (PWR).

Two are being supplied under a subcontract from Westinghouse for Units 1 and 2 at the South Texas Project Electric Generating Station. The other two units are a direct contract with Southern California Edison (SCE) for Unit 2 and 3 at the San Onofre Nuclear Generating Station.

Delivery will commence in 2009 with the last in 2012, shipping one unit a year.