Once you start damaging the core, you are then releasing radioactive material into the coolant and thereby increasing the chances that something travels outside the reactor.
Emergency is when obviously you have issues where you are losing coolant with a possible loss of coolant, possible loss of function.
So you have to, under this rule, postulate several loss of coolant accidents of different sizes and locations.
The buyer sees to it that the fish is properly gutted, packed with coolant, wrapped or sacked in polyethylene, and placed in an insulated box known as a "tuna coffin."
The reason to use pure water is to limit the corrosion potential of the coolant water during normal operation.
A number of breeder reactor designs use liquid sodium as coolant.
So, initially as you looked at it it was associated with insufficient coolant.
There are reactor coolant system weld issues, they're used and they're getting primary water stress corrosion cracking.
We also need to cool the reactor and the spent fuel in the spent fuel pool but that basically means you wanna maintain the coolant inventory which means water in the primary system.
Here is our accumulator which has that nitrogen overpressure which upon loss of pressure in the core would automatically insert coolant into the core should there be a break.