Decommissioned Nuclear-Powered Submarines

Lord Coaker Excerpts

Wednesday 23rd October 2024 Lords Chamber

[Baroness Bryan of Partick]

To ask His Majesty’s Government how many decommissioned nuclear-powered submarines there are in Scotland; and how many years it will take to safely dismantle them.

[The Minister of State, Ministry of Defence (Lord Coaker) (Lab)]

My Lords, there are seven decommissioned and defueled nuclear power submarines in Rosyth Royal Dockyard, Scotland. “Swiftsure”, the first vessel being disposed of, is being used as a demonstrator to refine the dismantling process under the Ministry of Defence’s submarine dismantling project. Learning from “Swiftsure” will provide more certainty about the schedule for dismantling the remaining decommissioned Royal Navy submarines. The full dismantling of “Swiftsure” is due to be complete in 2026, achieving the commitment given to the Public Accounts Committee in 2019.

[Baroness Bryan of Partick (Lab)]

I thank the Minister for his Answer. My Question happily coincided with information that was released last week, but there remains real concern that not one of these submarines has yet been dismantled. Bearing in mind that one Dreadnought submarine in Rosyth has been out of service since 1980, it will take decades to dismantle the boats remaining in both Scotland and Devonport. Can the Minister say whether there has been any progress in finding a site for the radioactive waste disposal facility which will be essential to progressing this work?

[Lord Coaker (Lab)]

On all the things that my noble friend mentions there is progress and ongoing discussions, including the waste disposal site, but we are trying to speed up the submarine dismantling programme. Seven submarines at Rosyth are decommissioned. All have been defueled. “Swiftsure” is now in dry dock. That will be fully dismantled by the end of 2026. There are 15 such submarines at Devonport. Four of those have been defueled. However, my noble friend is quite right; we need to speed up the process and we are certainly looking at every way in which we can do that.

[Lord Trefgarne (Con)]

My Lords, the Minister referred to the time taken to dismantle the retired submarines. How long will it take to get the new ones?

[Lord Coaker (Lab)]

The noble Lord is right to ask about dismantling. As I said to my noble friend, we are seeking to speed up that process. On the new submarines, if he is referring to the Astute class submarines, seven were ordered, six are already in the water and one is now under construction in Barrow. If he means the successor to the Vanguard class, we expect the first to be in service in the early 2030s. We are making considerable progress, and I hope that answers his question.

[Baroness Smith of Newnham (LD)]

My Lords, as the noble Baroness’s follow-up question pointed out, there is an accumulation of nuclear submarines that have been decommissioned but are still in Rosyth or Devonport. Are His Majesty’s Government sure that they are safe? Can the Minister commit to ensuring that freedom of information requests are responded to? Apparently, the MoD has not been responding to safety questions.

[Lord Coaker (Lab)]

On freedom of information requests, if the noble Baroness has any examples that she would like me to look into, she only has to ask and I will certainly do so. Freedom of information requests should be responded to within the timeframe laid down, so I will look at that. As I said, we are looking to accelerate the dismantling programme. I am confident that the processes that we are seeking to put in place will speed that up and that they are safe.

[Lord Fox (LD)]

My Lords, the noble Baroness, Lady Bryan, mentioned the disposal of nuclear material as and when it is eventually removed from the submarines. Can the Minister confirm, perhaps by letter, whether the establishment of a new disposal site—which has been debated for many years and is still no nearer, as far I can tell—will require primary legislation to be enacted? If not, how would the planning process be developed for the future disposal of that nuclear material?

[Lord Coaker (Lab)]

I may need to write to the noble Lord. I usually like to be able to respond directly to questions, but I do not want to get the planning process wrong or give the wrong answer on whether primary or secondary legislation is needed. I will respond to him with a letter to make sure that I am accurate and will place a copy in the Library so that it is available to all noble Lords.

[Baroness Goldie (Con)]

My Lords, on 20 May 2021, the Conservative Government published an update on the submarine dismantling project, stating that 90% of the decommissioned submarine materials could be recycled. Is the Minister in a position to confirm that his Government are committed to retaining that target? On the experience of decommissioning HMS “Swiftsure”, which is very well advanced, can he also indicate whether there is any proposal to secure an engineering impact assessment to understand how the process for future submarines might be expedited?

[Lord Coaker (Lab)]

I pay tribute to the work that the noble Baroness did to try to speed up some of these processes. She asked two very pertinent questions. For “Swiftsure”, we retained the 90% recycling target. She will know that once a decommissioned submarine such as “Swiftsure” is defueled, there is an initial phase that takes the nuclear material out. Then there is an intermediate phase, which is followed by dry-docking—which is where “Swiftsure” is—for the rest of the submarine to be recycled. We expect 90% of that to be recycled. The whole point of “Swiftsure” is that it acts as a demonstrator project so that we can learn from how that was done—what worked and what perhaps could have been improved—and then apply that to all the other submarines that have been decommissioned.

[Lord Wigley (PC)]

Does the Minister recall the late, great Sir John Houghton, who identified the dangers of global warming several decades ago? As an eminent scientist, he identified the potential to generate electricity by reworking some of the nuclear waste that comes from not only submarines but other parts of the Armed Forces. Are the Government investigating that aspect?

[Lord Coaker (Lab)]

No, we are not investigating that for nuclear submarines. The MoD takes climate change very seriously, and I have recently signed off a submission about fuel and its better economic use with respect to climate change. Right across the MoD, climate change is taken seriously, but on the noble Lord’s specific question about decommissioning nuclear submarines, there is no intention to use them, for example, to go into the grid.

[Earl Attlee (Con)]

My Lords, are the older submarines more difficult to recycle than the Swiftsure class?

[Lord Coaker (Lab)]

We will understand that more fully once we have finished the demonstrator project with HMS “Swiftsure”.

[Lord Teverson (LD)]

My Lords, the Minister says—it is not his fault—that the new nuclear submarines will not be delivered for another six years, yet the current length of patrols for the Astute class is getting longer. The crews have to cope with long periods of being away from their families and their homes. There is also stress around the recruitment of those crews. How do we square the circle over the next five or six years when, because of the maintenance of the current fleet, the length of patrols is likely to get even longer?

[Lord Coaker (Lab)]

Let me just say to the noble Lord that everything that happens is now my responsibility. If I gave the impression that it was not my responsibility, that certainly was not my intention. I will not evade responsibility for anything.

On the noble Lord’s question, I am not going to go into the operations of our submarine fleet in great detail on the Floor of this House, for obvious reasons. However, the noble Lord makes a point, as he has done here previously, about the welfare of submariners—indeed, the welfare of all our Armed Forces. That is something we take very seriously. We are looking to do all we can to support them and ensure that they are supported in the way they should be. In a few months’ time, or a year’s time, perhaps the noble Lord can ask the same question, and we will see whether we have made the progress we should have done; that will be my responsibility.

[Lord Foulkes of Cumnock (Lab Co-op)]

My Lords, with no disrespect to the important Question asked by my noble friend Lady Bryan, should we not be even more worried about Russian nuclear-powered and nuclear-armed submarines in the Atlantic and elsewhere? Can the Minister give us a complete assurance that we have all the capability to keep an eye on them to make sure that our danger is minimised?

[Lord Coaker (Lab)]

I thank the noble Lord for his question. He refers to our continuous at-sea deterrent. Under every Government, that continuous at-sea deterrent has been maintained. It is a crucial part of our defence of our democracy, of our freedom and against Russian aggression. That policy has been the same whatever the colour of the Government. The previous Government dealt with that and wanted to modernise the deterrent. We will carry on with that. It is an important part of our deterrent posture. Our adversaries should know that, 24 hours a day, seven days a week and 365 days a year, our at-sea deterrent will continue for as long as is necessary.

[Lord Kamall (Con)]

The Minister said that the MoD is not considering how it could use the material from decommissioned nuclear submarines for generation. Can he say whether that is for technical reasons—that is, limitations of technology—or for other reasons?

--- Later in debate ---

[Lord Coaker (Lab)]

I suspect that it is for safety reasons and that it is not the best way of using that material. I am not a nuclear physicist nor an expert on nuclear material, but I suspect that it will be something to do with it being too expensive, not safe or simply not appropriate to do it in that way. Obviously, all that will have been considered and decisions made as a consequence.