Chinon

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Worker overexposure

On April 27, 2010, Electricité de France (EDF), the licensee of Chinon NPP, informed ASN of the accidental exposure on 23 April 2010 of an employee of KELLAL company, an EDF contractor. This worker was exposed during cleaning operations of the fuel pool located in the fuel building of Chinon NPP reactor 4 when he found a high radioactive small metal piece (piece diameter of approx 18 mm).

This building is used for fuel assembly storage where these assemblies are removed from the reactor vessel for, in particular, maintenance operations in the reactor building.

Category: Power Reactor Chinon France »

French strike cuts 5,000 MW of power capacity-union

Tuesday, November 25, 2008

PARIS, Nov 25 (Reuters) - French energy strikers cut a total of 4,000 megawatts of nuclear capacity and 1,000 MW of thermal capacity since Monday night, an official at the CGT union told Reuters on Tuesday.

French strikers are holding a 24-hour strike to protest against salaries and pensions.

"The strike has cut a total of 5,000 MW, this is a very positive outcome for us," the union official said, adding that strikers had been warned by EDF not to cut more capacity to avoid endangering the supply/demand balance.

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France imports 'record levels' of power on nuclear outages

Tuesday, November 27, 2007

France imported "massive" levels of power to make up for a shortfall in nuclear power production in the country during October and the start of November, according to a report Monday.

The report in French daily Les Echos quotes Dominique Maillard, chairman of the French grid manager RTE, as saying state power company EDF is being forced to import "record levels" of power.

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Degradation of seismic stops of the reactor pit

On May 13, during Chinon B1 shut down for inspection and refuelling, the operator discovered while inspecting the civil engineering that the tie rods of the reactor pit lateral stops had loosened.

Category: Power Reactor Chinon France »

INES-event
INES 2

BORON MEASURING DEVICE CALIBRATION ERROR AT THE CHEMICAL LABORATORY

A higher than foreseen boron concentration was dicovered on units B1 and B2 at Chinon NPP. This was due to a calibration error on the measuring device.
See next page for additional information.
BASIS FOR RATING: 1. Calibration error, 2. violation of the technical specifications during the dilution process, 3) Lack of feed-back of experience (same incident at Dampierre in 1991), 4) Common mode failure.
DIFFICULTIES IN RATING: No difficulties. table A1 - adequate - expected.

Category: Power Reactor Chinon France »