Radiator panels are placed on top so that the inner surface of the panel touches the coolant water.

Several newspapers have quoted plant workers who said that the coolant water was within a few degrees of boiling.

The coolant water was fed via glass tubes on the three-phase connections.

Conversely, the vapour can be fed through the tubes with the coolant water or air flowing around the outside.

The coolant water must be highly pressurized to remain liquid at high temperatures.

The gas was generated by the breakup of the remaining coolant water.

The fire impacted pumping of coolant water through the spent fuel pool.

The moderator is often also the coolant, usually water under high pressure to increase the boiling point.

Pressure relief valves released between 200 and 400 cubic meters (sources vary) of radioactive coolant water into the building.

The fission products, which are radioactive should be contained and not allowed to mix with coolant water.