To ask the Secretary of State for Defence when the Commodore at Faslane Naval Base was alerted that collant radioactivity had been detected in the prototype reactor at NRTE Dounreay.

The then Naval Base Commander Clyde was briefed in June 2012 on the issue with the reactor at the Naval Reactor Test Establishment. The brief was given on a need-to-know basis because of the potential impact on submarine operations if a similar issue arose on an in-service submarine. He was also briefed that there was no safety or environmental risk.