Diablo Canyon Decommissioning Engagement Panel

Public Comments

DateMay 24, 2022
Decommissioning TopicSpent Fuel Storage
Comment / Suggestion:

Re: "Spent Fuel" Nuclear Waste Storage:
I refer to my presentation to the Panel on February 23rd, 2019, also sent to you by e-mail attachment on February 20, 2019 at 8:06 pm.
In addition, I offer these comments:
I.) According to ORANO, the NUHOMS Cask Storage System allows for much shorter cooling times of the spent fuel assemblies (SFAs) in the pools before transfer to the ISFSI at decommissioning. On its website, ORANO praises the financial savings for utilities as a main consideration. But what about the safety of the community? Can we really rely on assurances by the cask manufacturer? So far, PG&E has always stressed that the minimum cooling time for SFAs newly removed from the reactors must be 7 years for high burn-up fuel!
Moreover, how can radiation leaks from the casks on the ISFSI be dealt with if the pools are no longer available?

II.) Re: Prolonged plant life after 2025:
I strongly agree with Jane Swanson's viewpoint on this issue: "Mothers for Peace: Stay the course on Diablo Canyon closure" in THE TRIBUNE, page 10 B on May 15th, 2022.

III.) In conclusion, Diablo should close as presently planned (2025) but the pools should stay open for an appropriate period of time, to allow for longer cooling of the SFAs under water (at least 7 Years) and easier handling of potential radiation leaks at the ISFSI.

Thank you for your attention.

Klaus Schumann
Member of the SLO County Nuclear Waste Management Committee, 1996 to 2002.

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