Tuesday, April 5, 2011

#Fukushima I Nuke Plant: TEPCO to Inject Nitrogen Gas into Reactor 1's Containment Vessel

to prevent a hydrogen explosion.

(So this is "the dog"; the tail was the pit that was leaking radioactive water.)

Also read the New York Times article on the latest US assessment of the Fukushima Plant situation.

Yomiuri Shinbun (11:20AM JST 4/6/2011):

TEPCO announced on April 6 that there is a possibility of a hydrogen explosion in the Containment Vessel of the Reactor 1 at Fukushima I Nuclear Power Plant, and TEPCO will start injecting the inert nitrogen gas into the Containment Vessel as early as this evening.

According to TEPCO, both the pressure and the temperature within the reactor [Reactor Pressure Vessel] remain high, the partial exposure of the fuel rods continues, and zirconium in the cladding and the steam are reacting to create more hydrogen. As hydrogen also accumulates in the Containment Vessel as some of it escapes from the RPV, it could react with oxygen and cause an explosion.

The purpose of injecting nitrogen gas is to dilute hydrogen to avoid an explosion. According to TEPCO, about 6000 cubic meters of nitrogen will be injected over the next few days.

TEPCO will also prepare for nitrogen injection in the Reactors 2 and 3.






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