Energy Bill [ Lords ] (Sixth sitting)

Debate between Alan Whitehead and Andrew Western

Committee stage
Thursday 8th June 2023 Public Bill Committees

[Dr Whitehead]

I hope we have established that it is not the case that fusion activity is much more advantageous than fission from a safety and waste point of view. It is not, in itself, radioactive neutral. Additionally, the process produces a relatively small amount of tritium—much more of which is produced in fission reactors—which clings to the vessels and can get into the waste stream and produce radioactive water. Although that is not a big concern, it certainly needs to be taken into account as far as safety features of the overall plants are concerned. The case that I am trying to make is that, though it is important to progress with fusion—which is a much safer and, as the Minister said, potentially much more abundant source of energy—we should not be blind to its side effects.

As I have described, the side effects are not just about the problem of the potential embrittlement of the casing and the need to treat that casing in due course, the need to stop tritium release through lithium blankets around the sphere core and the difficulty of making those blankets completely sealable. All those things suggest that the sorts of actions in the nuclear installation regulations and the Nuclear Installations Act 1965 are rather more pertinent than we might have thought, than the Minister suggested or than the clause seems to provide. I suggest a modest revision of the clause so that, instead of dismissing the safety concerns about and operational arrangements for fusion, it brings forward a revised, and perhaps acceptably less rigorous, process that nevertheless falls within overall nuclear guidelines for fusion activities.

In any debate on fusion, it has always been said that fusion is a very bright future for us but that it is 40 years away. Well, it is not 40 years away now; it is much closer to being realised. As the Minister said, in the UK, spherical tokamak for energy production is potentially producing good results, so we could be a few years away from having to get this regime right, and it is right that we do so now. Our new clause 51, which—for the guidance of those who have given up going through all the amendments and new clauses in the amendment paper—is to be found right at the back on page 58, states:

“The Secretary of State must consult on and establish a revised nuclear site licence regime for fusion energy which will not be subject to the full range of safeguards associated with the use of fissionable materials but must have regard to the residual radioactivity of the proceeds of fusion activity.”

That is a sensible alternative that will not, or should not, in any way impede the development of fusion, but will provide a clear understanding as to what we are dealing with as far as fusion is concerned. It would be a programme of appropriate and proportionate safeguards—yes, associated with nuclear safeguards in the background—that makes clear the very different circumstances under which fusion works. That would be helpful.

[Andrew Western (Stretford and Urmston) (Lab)]

I am listening carefully to the debate that is unfolding. We appear to be heading towards a binary position—fulfilling all the requirements under the Nuclear Installations Act 1965 or effectively removing all the requirements as the fusion process comes in. Does my hon. Friend agree that actually the balance of risk is not binary in that way—that fusion can activate the walls of the plasma vessel as he has set out and that therefore, although we all agree that we should seek to step down some of the licensing requirements, it would indeed be prudent to have some process, subject to broader restrictions around nuclear, that would place us within the realms of acting in a way that is “better safe than sorry”?