Page "Torness Nuclear Power Station" Paragraph 14

This was thought, from forensic evidence, to be linked to the development of an unexpected fatigue related crack in part of the impeller.

In August, another gas circulator on the other Torness reactor showed signs of increasing vibration and was promptly shut down by the operators.

Its subsequent disassembly revealed a fully developed fatigue related crack in a similar position to the first failure, but the prompt shutdown had prevented consequential damage.