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www.freepatentsonline.com A core spray sparger assembly for a nuclear reactor comprising fuel assemblies, a top guide, coolant supply pipes and a shroud head, said core spray sparger assembly comprising: at least one coolant manifold, each said coolant manifold comprising a plurality of independent coolant manifolds joined by a plurality of resilient couplings; at least one coolant coupling in fluid communication with said coolant manifold; at least one mounting device configured to couple said coolant manifold to the nuclear reactor; a plurality of fluid conductors in a parallel array, positioned above the top guide, said fluid conductors in fluid communication with said coolant manifold; and a plurality of nozzles in fluid communication with said fluid conductors.

@lilly. in that link is a diagram of the sparger

@UKVal.. that could be an assumption on that route.. I think Peter has it spot on .. they chose some line or lines to input the water to the reactor vessel,

@Peter.. I'm trying to find that one video which shows the top head off in preparations for refueling and they have a blue tarp up on one side and the reactor spray system running...

Thehigh pressure coolant injection system is designed to operate while the nuclear system is at high pressure.The core spray system and low pressure coolant injection mode of the residual heat removal system aredesigned for operation at low pressures. If the break in the nuclear system process barrier is of such asize that the loss of coolant exceeds the capability of the high pressure coolant injection system, reactor pressure decreases at a rate fast enough for the low pressure emergency core cooling systems tocommence coolant injection into the reactor vessel in time to cool the core

@Peter I wish they would pick one of the accessible steam lines coming from the reactor and find a point where they can take some temp/air activity readings

a good flow path for air purging the system would be a path out the steam lines which would allow direct access to all the air activity generated by the corium/fuel mass

Ontario's power glut means possible nuclear plant shutdowns

Read more: www.ottawacitizen.com

@illly.. can you blow up the image on elaines video where it shows the flow meters.. maybe we can see what the units are

@lilly. .gmail

uh anyone know what video Dean was asking about? I'm missing it. Is it the one UK Val posted?

@elainekirk k - will work on it when I get back from running to the store.

chapter 12 starts page 37 ]
PCV Venting and Alternative Cooling Water Injection Preparation for Fukushima
Daiichi Nuclear Power Station Unit 2 www.tepco.co.jp