Wednesday, April 13, 2011

#Fukushima I Nuke Plant: Pressure Remains High in Reactor 1's Pressure Vessel

Here's the pressure measurement inside the Reactor 1's Pressure Vessel. The red line is the pressure gauge A, the orange line is the pressure gauge B; no information on where they are located (from

Here's the same for the Reactor 2 (from


Anonymous said...

Is the scale calibrated in atmospheric pressure? If so the pressure doesn't seem too high maybe 14 psi on the orange line. I'm pretty sure the RPV's in #2 (and #3) are breached that is why they don't read any pressure. The slight negative pressure reading on #2 is normal for industrial gauges. If the RPV in #1 is holding pressure that is a small bit of good news since the primary containment seems to have a leak that won't allow a full nitrogen purge.

M. Simon said...

It is in MPa Robbie.

1 MPa = 145 psi (roughly).

Anonymous said...

So #2 and #3 are at atmospheric pressure (in fact, 3 is slightly below, which probably means it's draining through the bottom and creating a bit of a vacuum up top (not good news for cooling exposed rods, that).

#1 will need venting rather soonish. Cue yet another hydrogen explosion. Let's hope the spent fuel pool survives again.

Anonymous said...

Here's an interesting report: Japan mulls moving capital to Nagoya / Osaka!!! May be a hoax though.

M. Simon said...

Earthquakes and Volcanoes

I also link to a report that says Japan is planning to get out of Tokyo. Well at least the government is.

arevamirpal::laprimavera said...

@anon, Simon, that idea regularly surfaces every 10 years or so. I don't see, though, anything moving to Nagoya. That city is considered some kind of joke by many Japanese (sorry people of Nagoya, but I have Nagoya friends who readily admit to that).

People in Kyoto have always resented the fact that the nation's capitol moved to Tokyo.

They (the government, ignoring the people) actually picked three candidate locations, one of which included Fukushima. LOL. That's how smart they are.

Post a Comment