nuclear-news

 The California Coastal Commission, on a 9-0 vote, gave approval Thursday for Southern California Edison to proceed with plans to dismantle the San Onofre Nuclear Generating Station, known as SONGS, where canisters loaded with nuclear waste are being moved from “wet storage” to a newly constructed “dry storage” facility on site.

The permit will allow Edison contractors to begin removing major structures at the facility, located on an 85-acre chunk of Marine Corps Base Camp Pendleton owned by the Department of the Navy. SONGS is home to 3.55 million pounds of used-up nuclear fuel, between the Pacific and Interstate 5…..

Ultimately, the federal government has the final say about where used-up commercial nuclear fuel should go. But since a permanent site has not been found, nuclear waste at plants like SONGS have been piling up for decades. …….

A provision within the commission’s vote added a special condition to the permit concerning the demolition of two spent fuel pools where used-up nuclear waste is stored.

Under the provision, Edison will not get rid of the pools until it funds an independent third-party review of an inspection and maintenance plan regarding the condition of canisters in dry storage and forwards the findings to the Coastal Commission. Edison also agreed to start the plan by March 31, 2020 — seven months earlier than scheduled.

In return, the commission agreed to not sit on the report and vote on a recommendation by Coastal Commission staff by July 2020.

The proposed demolition of the pools at Units 2 and 3 dominated much of the discussion that dragged out for most of the day.

While fuel inside a nuclear reactor typically loses its efficiency after about four to six years, it is still thermally hot and emits a great deal of radiation. To keep the fuel cool, nuclear plant operators place the used-up waste in a metal rack and lower it into a deep pool of water, typically for at least five years. Once cooled, the fuel is often transferred to a dry storage facility.

Some speakers supported removal of the pools but others insisted they must remain to make sure the canisters holding the waste can be retrieved and inspected.

While fuel inside a nuclear reactor typically loses its efficiency after about four to six years, it is still thermally hot and emits a great deal of radiation. To keep the fuel cool, nuclear plant operators place the used-up waste in a metal rack and lower it into a deep pool of water, typically for at least five years. Once cooled, the fuel is often transferred to a dry storage facility.

Some speakers supported removal of the pools but others insisted they must remain to make sure the canisters holding the waste can be retrieved and inspected………

The dismantlement will be carried out by a general contractor selected in December 2016 — a joint venture of AECOM and Energy Solutions called SONGS Decommissioning Solutions. The decommissioning will be paid for by $4.4 billion in existing trust funds, The money has been collected from SONGS customers and invested in dedicated trusts. According to Edison, customers have contributed about one-third of the trust funds while remaining two-thirds has come from investments by the company.

Some of the work can begin before the waste transfers are completed, provided they are “geographically separate from locations where fuel storage and transfer operations occur,” Dobken said.

After transfers were suspended for a little more than one year after the August 2018 incident involving the 50-ton canister, Edison resumed moving canisters in July. Workers have moved 35 canisters to dry storage thus far, with 38 more to go. Transfer operations are expected to be completed by mid-2020…….

SONGS is far from the only nuclear plant with waste on-site. About 80,000 metric tons of used commercial fuel has piled up at 121 sites in 35 states because the federal government has not found a repository where it can be stored. Federal authorities were supposed to begin taking custody of spent fuel in 1998. https://www.sandiegouniontribune.com/business/energy-green/story/2019-10-17/coastal-commission-oks-permit-to-begin-dismantlement-at-san-onofre-nuclear-plant