Radiation leak on nuclear sub off Scots coast
[link to www.express.co.uk]

[snip]

HMS Tireless was taking part in a training exercise for new officers off the west coast 10 days ago when a problem developed in its ageing 30-year-old reactor system.

The 4,800 tonne Trafalgar-class submarine was ordered to limp back to Faslane naval base on the Clyde, where engineers inspected the leak. She has now returned to her home base at Devonport and faces up to 10 months in dry dock while repair work is carried out.