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France Predict Cost of Nuclear Disaster to be Over Three Times their GDP

Saturday, March 16, 2013

Catastrophic nuclear accidents, like Chernobyl in 1986 or Fukushima No. 1 in 2011, are very rare, we’re incessantly told, and their probability of occurring infinitesimal. But when they do occur, they get costly. So costly that the French government, when it came up with cost estimates, kept them secret.

But now the report was leaked to the French magazine, Le Journal de Dimanche. Turns out, the upper end of the cost spectrum of an accident at a single reactor at the plant chosen for the study, the plant at Dampierre in the Department of Loiret in north-central France, would amount to over three times the country’s GDP. Financially, France would cease to exist as we know it.

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INES 2

Wrong positioning of fuel assemblies in the reactor vessel during refuelling operations

On April 2nd, 2001, during Dampierre nuclear power plant unit 4 refuelling, a shift in the refuelling sequence has led to a wrong position for 113 fuel elements within the reactor vessel. This event had no consequences on EDF staff's safety. The ASN has requested EDF to proceed to a detailed analysis of the event causes together with its potential consequences.

Category: Power Reactor Dampierre France »

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Error in operating rules leading to safety injection system unavailability

When entering a shutdown state at the Dampierre plant, the Safety Injection System was made unavailable due to the application of an erroneous operating rule, which does not permit to fulfill the requirements of technical specifications. This rule had been written by the Tricastin Plant and was also used as it was (i.e. with the error) by Dampierre and Bugey plants.

This incident occurred several times on these three 900 MWe plants during the following years.

Category: Power Reactor Dampierre France »

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Leakage on a piping connected to the primary circuit

A leakage has been detected on a piping connected to the primary at Dampierre-1 on December 14, 1996. The leak rate increased and led the operator to shutdown the reactor in order to localize the leak before reaching the safety threshold of 230 l/hour on December 21, 1996.
The operator localized a non isolable primary water leak on a piping connecting the safety injection system to the plant primary system. The defected part of the pipe has been replaced during a one month outage.

Category: Power Reactor Dampierre France »

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SLIGHT CONTAMINATION AT THE NUCLAR ELECTRICITY PRODUCTION CENTRE OF DAMPIERRE

Unit 1 of Dampierre NPP is shutdown since the end of July for refuelling and various maintenance and control actions on the equipment. During maintenance, workers from EDF and outside companies have been slightly contaminated by radioactive iodine.
The maximum contamination observed was less than 1/30 of the maximum quantity authorized per year. To be on the safe side, the medical service of the plant is performing routine control tests on the people working inside the reactor building.

Category: Power Reactor Dampierre France »

INES-event
INES 2

UNAVAILABILITY OF THE IODINE FILTERING OF REACTOR CONTROL ROOM VENTILATION SYSTEM

On 22 January the operator discovered that the iodine filtering circuit of the control room ventilation system was unavailable. This anomaly was due to the presence (since 23 December 1991) of plugs in both the lines of the circuit. This common mode failure of a system important for safety due in particular to inadequate procedure is classified at level 2.
Additional information by public release (MAGNUC):

Category: Power Reactor Dampierre France »