Energy

Yankee owner cleared to put more casks of spent fuel on site

Vermont Yankee owner Entergy Nuclear won permission Friday from the state to build a second pad on which to store concrete-encased radioactive nuclear waste at the closed plant.

The Public Service Board allowed the second pad on the grounds that it will have “no undue adverse effects on the environment” and will promote the state’s general good by hastening the transfer of spent nuclear fuel from the pools in which it now sits.

Vermont Yankee
Dry casks hold spent nuclear fuel at the shut-down Vermont Yankee in Vernon. Photo courtesy of Vermont Yankee

Entergy anticipates keeping the storage casks on the pads until as late as 2052, by which time it is hoped the federal government will have built a permanent storage facility for the country’s nuclear waste.

Until then, state officials say, the waste is better off stored inside concrete dry casks than submerged in cooling pools.

An existing concrete pad holds 13 casks and can accommodate 36, but the plant in Vernon is thought to contain enough spent fuel to require 58 casks in total.

Storing the waste in 13-ton concrete casks will eliminate the need to monitor the pools in which it’s currently held, said Public Service Commissioner Chris Recchia on Monday. The pools require human intervention to keep them operating in case of certain emergencies, Recchia said, and their moving parts introduce potential sources of failure that dry casks lack.

“I think this will help alleviate any remaining issues with the fuel, in terms of management,” Recchia said.

Moving the waste into casks also is a step toward preparing the fuel for permanent disposal once the federal government secures a suitable location, he said.

The transfer into concrete casks also speeds the process of making the Vermont Yankee site radiologically inert again, Recchia said. The plant stopped producing power at the end of 2014.

Entergy committed publicly to have the spent fuel moved from storage pools into casks by the year 2020, Recchia said.

Marty Cohn
Vermont Yankee spokesman Marty Cohn. File photo by Mike Faher/VTDigger

Vermont Yankee spokesman Marty Cohn said the PSB order comes in time for his company to meet that deadline.

Entergy will put up about $143 million to build the pad and purchase and fill the casks, Cohn said. The federal government will then reimburse the company.

The company’s upfront contribution will conserve money already in the Vermont Yankee decommissioning trust fund. Some people are concerned that any withdrawal from the fund will further delay the eventual cleanup of the plant, which isn’t set to start until the fund has enough money.

Entergy has earmarked an additional $225 million to store the casks until as late as 2052, Cohn said; that money will be withdrawn as needed from the cleanup fund.

The fuel is to be stored for decades on the site because the federal government failed to build the planned Yucca Mountain spent fuel repository in Nevada. Nuclear plant operators have for years paid a portion of their proceeds toward such a site. Since none exists, the Department of Energy will reimburse Entergy for both the cost of interring the material in casks and for storage costs.

Opponents have 10 days from the PSB order’s filing date of June 17 to ask the board to reconsider, Cohn said.

Barring such a request, Vermont Yankee will have secured all the necessary permits to begin transferring spent fuel from the storage pools into dry casks, Cohn said.

Cohn said he doesn’t expect further obstacles to the transfer and that he and the company are very pleased with the board’s order.

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  • Charles Kafka

    those fuel rods are going to be with us a few million years..
    have to do something with them..

    • Leonard Suschena

      Ask your congressman and senator what they plan to do. The nuclear industry paid $30B into the waste fund, and by law, they are supposed to deal with it.

  • Hilton Dier

    Far better to have the waste in passively cooled casks than in the pool, which requires an active cooling system. At Fukushima the cask-stored waste survived the earthquake and tsunami intact.

    Let’s face it; barring a miracle we are stuck with it for a thousand generations.

    • Paul Richards

      Or we could just use a little common sense and use this valuable fuel to make carbon free energy. That would be preferable to government mandated wind and solar.
      This is how you do it; http://www.anl.gov/articles/nuclear-fuel-recycling-could-offer-plentiful-energy

    • Leonard Suschena

      So dis the spent fuel pools. Although filled with debris, they did not boil off.

      • Leonard Suschena

        Well, that didn’t come out correctly, apologies for that. It should have said.
        So, did the spent fuel pools in Fukushima not survive? The fuel stored in casks is relatively low heat energy, therefore air cooling is sufficient. Fuel rods take about 5 years of decay for the heat energy to be low enough to be moved to casks. To my knowledge, the spent fuel pools functioned and maintained the fuel below boil off temperatures.

        • Hilton Dier

          The Unit 3 fuel pool exploded in what was termed a “prompt criticality” and spread fragments of fuel rods up to 2 miles away. (Video: https://youtu.be/7naSc81WSqA)

          The Unit 4 fuel pool partially boiled off, exposing the fuel rods and spreading Cesium 134 and 137. The plant operators pumped hundreds of thousands of gallons of seawater into it, most of which evaporated into the atmosphere. The walls of the pool cracked and it had to be propped up. It was finally emptied of its fuel rods in 2014.

          The problem is that these pools require active water circulation and cooling to stay at a proper temperature. When Fukushima lost grid power it also lost its emergency generators to the tsunami and only had 8 hours of battery power. VT Yankee is different, of course – it only has 4 hours of battery power.

  • Penelope Newcomb

    In my opinion, of all abuses, the worst and most criminal that humans have ever committed against All of Life on earth is using nuclear energy as fuel and weapon. There is no “suitable location” where spent fuel rods can be stored. There never will be. That’s why it’s the worst and most shameful. Uranium should be left in the ground. It is a very heavy metallic chemical and its proper function for the planet is to keep Earth from wobbling on its axis… so teach the aboriginal people of Australia.
    For our situation with Vermont Yankee, the lesser evil is dry cask storage. The cooling pool of Vermont Yankee is high off the ground and there is a great weight to support let alone the need for pumps and control systems and constant monitoring. And with the rods gone, once the pool is sufficiently decontaminated, the building can be taken down.
    The relatively excellent decommissioning of Maine Yankee should be our model. The industry and community worked together to accomplish an immediate and thorough process of decommissioning. But of course Entergy was not the company responsible for their decommissioning.