This intervention was one of a series planned for the BAE Systems Marine Limited (BAESML's) licensed nuclear site at Barrow, in line with the strategy for regulating the site during 2016/17.
On 6th July 2016 a joint ONR / Defence Nuclear Safety Regulator (DNSR) team assessed the annual Level 1 on-site emergency exercise "INDIGO 16". This emergency exercise was intended to demonstrate BAESML's arrangements, under Licence Condition 11 (LC11) and Authorisation Condition 11 (AC11) "emergency arrangements", for dealing with any accident or emergency arising on the site and their effects.
We considered that BAESML's aims and objectives for the emergency exercise were appropriate and that a suitably challenging scenario had been defined. During its assessment of the emergency exercise, the team identified a number of effective practices and some areas for improvement. These will be included in a joint DNSR/ ONR exercise assessment letter to BAESML. Overall we deemed the exercise to be an adequate demonstration of the site's emergency arrangements. However, the Licensee agreed to a partial re-demonstration of part of the scenario where a casualty would be rescued from an area containing a significant radiological challenge.
Conclusion of Intervention
From the evidence gathered during this intervention, no matters have been identified that are likely to have a significant impact on nuclear safety on the site at this time. However, the partial re-demonstration of part of the scenario where a casualty would be rescued from an area containing a significant radiological challenge will be carried out prior to commissioning of the next submarine which I will track to completion under a Regulatory Issue. Therefore, no further regulatory action arising from this visit is considered necessary.