Which interests me the most is how you keep the IRWST from running dry. No condensate collection system is perfect if not completely closed, which means the cycle of boiling and condensing will constantly remove (small) amounts of water out of the IRWST. Should the tank run dry, the thermal contact between the core and the containment vessel is broken, leading to an uncontrolled heating of the core in this scenario. Considering that this system is supposed to run indefinitely, there has to be a way to replace water inside the IRWST.

@leerman22

6 жыл бұрын

Just pour some water in the thing, top off the tanks. A problem with fukushima was the amount of back pressure in the core stopping firetrucks from getting water in there. There wouldn't be back pressure here I think. Like you said, only small amounts of water are being boiled off. I may be wrong but if fukushima daiichi used this type of reactor there wouldn't be a catastrophe.

@l33th4xzr

6 жыл бұрын

The entire secondary cooling process has a secondary cooling vessel taking up most of the building... It condenses inside this air cooled vessel to provide make up water via condensate return. An additional cooling water source sprays a couple gallons a second on the exterior of this vessel passively via gravity. That is the only water supply which needs attention over the next few weeks.

@isaacandersen1

7 ай бұрын

The existence of human beings is assumed.

Humm, I understood the passive water tank runs out after 3 days and needs replenishing unless AC power is restored before that. That's not a big deal, a cheap 15hp water pump, small enough to be brought in a small car. But hiding those details doesn't inspire confidence. As a pro nuclear guy, I expected far more transparency from Westinghouse.

@leerman22

6 жыл бұрын

Nothing a bucket brigade can't handle :P

@markssquared

5 жыл бұрын

They have a different video showing that side of it.

@nedward.7442

9 ай бұрын

No. As already mentioned here, there is another video, if briefly, after the evaporation of water, it settles on the steel containment of the rector, which is blown from the outside by air, thereby, the water condenses and flows back into the tanks. If this is not enough, then the containment is washed with water from the tank on the roof of the containment, and this tank will need to be filled.

@nedward.7442

9 ай бұрын

kzread.info/dash/bejne/mZytm8ObkZbReLg.html

PRHR XH should be include heat -150 MW (after 2 minutes) for water circulation , otherwise the fuel will be melted.

Why didn't the PWR have an auxiliary power plant that can run off the decay heat and keeps the cooling pumps running? Too much heat and not enough energy makes no sense.

@isaacandersen1

7 ай бұрын

I'm sure there is a reason as I don't know of any reactor that does such a thing. This solution is more reliable though.