Bellona nuclear digest. July 2024
A survey of events in the field of nuclear and radiation safety relating to Russia and Ukraine.
News
Publish date: June 7, 2009
Written by: Charles Digges
News
Environmentalists who have been pushing for the sites closure following a 2005 leak of radioactive liquor in Thorps clarification cell, were mildly encouraged the site would be out of commission for some time, but also disappointed that an eventual restart is planned.
There will be no impact the site’s 1,500 workers who will remain working while the engineering evaluations progress, said Sellafield, Ltd, the site’s operator, in a statement.
The main thrust of the work will focus on Evaporator C, one of three units at Sellafield that condense highly radioactive liquid.
The high level waste streams from the Thorp and Magnox Reprocessing facilities are fed to storage tanks via evaporators that concentrate the waste liquid, reducing storage volumes and providing a feed stock to the Waste Vitrification Plant, Sellafield, Ltd, the site’s operator, said in a statement.
Late last month, Sellafield workers found a fault in Evaporator B, which led to a staff-initiated shut down occasioned by an excess of activity in the evaporators upper coils .
Sellafield, Ltd,, said that the 50-year-age of the unit had led to a build up of activity in the evaporator and that it was not the result of any technical deficiency discovered in the equipment. Evaporator B is currently working at full capacity.
Yet, environmental groups, particularly Bellona, which has worked with Sellafied for many years to improve its safety, have nonetheless called for the permanent closure of the Thorp reprocessing facility.
Speaking about the closure of Evaporator B late last month, Bellona nuclear physicist Nils Bøhmer said the age of the facilities involved make them very difficult to run safely.
“This latest incident (with Evaporator B) is another nail in the coffin for the Thorp facility,” said Bøhmer.
“This incident shows exactly that – this is not a top notch facility but an old one that needs lots of maintenance,” he said.
Sellafield, Ltd. in announcing the closure of Evaporator C has taken care to disassociate it from the closure of Evaporator B, and indicated that the shut down of the C unit had been planned for months, and that it closure is related to a planned shutdown to carry out assessments and reapply for the Evaporator’s operational licence from the Nuclear Installations Inspectorate.
“Recent media speculation surrounding the future of Thorp has focussed on Evaporator B which was taken temporarily off-line as a precautionary measure after an operational anomaly,” said Sellafeild, Ltd.
“The planned engineering shutdown in Thorp is not related to what happened with Evaporator B and we are disappointed that a planned maintenance period is being presented as a closure that threatens the future of the plant and its workers,” the group said.
Sellafield, Ltd. continued to say that Evaporator C is in good working condition and will continue to operate over the next month to complete Thorp’s current efforts to reprocess 300 tonnes of spent nuclear fuel.
A survey of events in the field of nuclear and radiation safety relating to Russia and Ukraine.
Transport on the Northern Sea Route is not sustainable, and Kirkenes must not become a potential hub for transport along the Siberian coast. Bellona believes this is an important message Norway should deliver in connection with the Prime Minister's visit to China. In an open letter to Jonas Gahr Støre, Bellona asks the Prime Minister to make it clear that the Chinese must stop shipping traffic through the Northeast Passage.
The International Atomic Energy Agency has published a new report on its efforts to ensure nuclear safety and security during the conflict in Ukraine, with the agency’s director-general warning that the situation at the Zaporizhzhia nuclear power station remains “precarious and very fragile.”
In this news digest, we monitor events that impact the environment in the Russian Arctic. Our focus lies in identifying the factors that contribute to pollution and climate change.