Greifswald

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How safe if SAFE?

Saturday, August 27, 1994

A plan to upgrade two nuclear reactors in Solvakia may force Western governments to stop dithering over nuclear safety in Eastern Europe.

Ever since the reactor at Chernobyl exploded in 1986 spewing radioactivity over more than 20 countries, Europeans have lived in fear of another large-scale nuclear disaster. That fear grew when the Iron Curtain fell, revealing the full extent of the problems with nuclear plants in the former Eastern bloc. It also fuelled a fierce debate: should Soviet-designed reactors be shut down or could they be made 'safe'?

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INES-event
INES 2

INOPERABILITY OF NEUTRON FLUX MEASUREMENT DURING COLD SHUTDOWN

After the monthly control of the nuclear monitoring system on July 25 it was not noticed by the personnel, that the ionization chambers of the low and middle range of the monitoring system after controlling were driven out of their working range and not driven back.

This faulty position was observed 24 hours later after controlling by a shift-physicist.

During this period of 24 hrs the nuclear monitoring system for the cold shutdown stage of the reactor was not available. The shutdown concentration of boric acid in the primary circuit during this time was cB=17.1 g/l.

Category: Power Reactor Germany Greifswald »

INES-event
INES 2

REACTOR COOLANT LEAK ON THE WATER CLEANING SYSTEM WHILE CONNECTED TO THE PRIMARY CIRCUIT

During normal power operation after checking the resin content of the K-filter and connection of the water cleaning system with the primary circuit, a leakage of the seal of the fill-in nozzle at the filter occurred. The nozzle is situated in the reactor hall out of the pressure room system. The personnel violated several operating instructions but the reactor was not shut down as prescribed in such situations.

Category: Power Reactor Germany Greifswald »