Defence: Nuclear Submarines

Lord Davies of Stamford Excerpts

Thursday 6th March 2014 Lords Chamber

[Lord Astor of Hever]

My Lords, it will take place at Devonport in Plymouth, yes. There is no risk, I can assure the noble Lord, to the workers or the local community up at Dounreay. The naval reactor test establishment remains a very safe and low-risk site. Workers remain safe and the local community and environment is not at risk. There has been a very small increase in the radioactivity of the coolant in the sealed reactor circuit. This has not gone outside the sealed unit and it has certainly not gone into the atmosphere. This refuelling is a prudent, pre-emptive and purely precautionary measure and it has been carried out to manage risk to the operational submarine programme and not to mitigate any safety issue.

As far as any risk to the submarine crews is concerned, the safety of our nuclear submarines is not in doubt and we have not identified any issues with our operational submarines. The refuelling of HMS “Vanguard” will begin in late 2015 as a precautionary measure during her scheduled deep maintenance period. If a leak occurred on a submarine, it would be detected immediately.

[Lord Davies of Stamford (Lab)]

My Lords, I endorse the words of my noble friend Lord West about the importance of having four SSBMs rather than three, which has been brought out by this incident. Had we only three boats, as people more out of ignorance of the situation than anything else have sometimes urged upon Governments of both parties, and were we then faced—which we have not been on this occasion, mercifully although we might have been—with a need for an emergency refuelling, continuous at-sea deterrent would almost certainly have been threatened.

I would have had the ministerial responsibility for this matter had it arisen in my time in office and, on the basis of the facts set out in the Statement this afternoon—the House will be grateful for the fullness of the explanations given by the noble Lord—I think that the Government have done absolutely the right thing. However, I am mystified by why the decision has been taken now rather than two years ago. Surely, once it was clear that the prototype had this important fault, it should have been clear at that point that when the first opportunity arose to do a deep refit of the oldest submarine HMS “Vanguard” it would have been sensible to have taken the opportunity to refuel. That has been done now. But surely that could have been seen to be the right solution two years ago, or 18 months ago when matters had been thoroughly worked through in terms of the conclusions from the leak that has been established in the prototype. Why the delay? That is the one thing that mystifies me about this whole incident.

[Lord Astor of Hever]

My Lords, taking the first part of the noble Lord’s question, nuclear deterrent remains the ultimate guarantor of our nation’s security. The Government’s policy is clear: we will maintain a continuous at-sea deterrent and proceed with plans to build a new fleet of submarines. Final decisions on successive submarines and the numbers, which the noble Lord mentioned, will be taken in 2016.

The noble Lord asked why there was a delay. I set out an answer in some detail to the question of the noble Lord, Lord Rosser.