- The National electricity provider EDF reports that "this is an industrial accident, not a nuclear accident."
- The blast is reported to have originated in an oven used to melt metallic low- and very low-level radioactive waste.
Technicians dismantle certain parts of the nuclear station at Marcoule in this image from 1992. Click to enlarge this image.
Frederic Pitchal, Corbis
At least one person was killed and four injured in a blast at a nuclear site in the south of France on Monday as the government sought to play down fears of a radioactive leak.
France's state nuclear regulator had said earlier that there was a risk of a leak after the blast at Codolet in the Rhone Valley near the southern city of Nimes.
Despite killing one person and wounding at least four more, the blast "did not cause any radioactive leak", a spokesman at the energy ministry said.
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National electricity provider EDF confirmed the initial death toll following the explosion in an oven at the site.
One of the injured is in a serious condition, France's Nuclear Safety Authority (ASN) said, officially declaring the incident "over".
"This accident has no radiological risk or need for population protection," the ASN said, adding that it had suspended its crisis cell dealing with the incident.
The blast hit the Centraco nuclear waste treatment center belonging to EDF subsidiary Socodei, said a spokesman for the Atomic Energy Commissariat (CEA).
"Initial reports suggest there was an explosion in an oven used to melt metallic low- and very low-level radioactive waste," the ASN said.
An EDF spokesman said: "This is an industrial accident, not a nuclear accident."
"In this kind of oven, there are two sorts of waste: metallic waste such as valves, pumps and tools and combustible waste such as technicians' work outfits or gloves," the spokesman said.
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A security perimeter has been set up around the installation, firefighters said, without being able to provide further details.
The interior ministry said that no one was evacuated from near the site nor were any workers confined following the blast.
Those injured "have not been contaminated" and the fatality was caused by the explosion, the ministry said.
Environment Minister Nathalie Kosciuscko-Morizet was due to arrive at the site on Monday afternoon, her ministry said, "to help carry out a precise evaluation of the possible radiological impact of this accident".
"For the time being, no exterior impact has been detected," a source at the ministry said.
"There are several detectors on the outside and none of them detected anything, the building is sound," an adviser at the ministry told AFP, adding that "we do not yet know what caused the blast".
The site is around 20 kilometers (12 miles) north of the historic city of Avignon which is thronged with tourists at this time of the year.
EDF's share price dropped over six percent on the news of the blast.
France said in June it would invest one billion euros ($1.4 billion at the time) in future nuclear power development while boosting research into security.
France produces most of its energy from nuclear power. Some countries, notably its EU neighbor Germany, have rejected nuclear power after the Fukushima reactor disaster in Japan.
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Environmental lobby group Greenpeace demanded total and immediate transparency from the authorities.
"It's essential for local populations to be informed in real time about the situation and possible radioactive discharge," said campaigner Yannick Rousselet.
He pointed out that the site was not covered by the audit of French nuclear sites ordered after the Fukushima disaster nor had it been part of the ASN's latest round of inspections.
Tags: Disasters and Accidents, Electricity, Explosions, Government, Nuclear Accidents
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