Question to the Ministry of Defence:

To ask the Secretary of State for Defence, on what dates safety cases for the operation of the PWR2 Steam Raising Plant were submitted by his Department for regulatory approval.

The PWR2 Naval Reactor Safety Case is a live document which is maintained through-life to justify and ensure continued safe operation of the reactors in our submarines. It is a requirement that a major stand alone review of each Safety Case is undertaken at approximately ten-year intervals. The last periodic full review was completed in 2014.