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Ah right, the steam vent on No. 3 filmed from the helicopter/drone, I remember now. No. 2 lost pressure after the explosion in the wet well, so I'm not sure where and how steam escapes there.

*Lunatic*, n.
One whose delusions are out of fashion.
by DoDo on Fri Apr 15th, 2011 at 06:08:35 AM EST
[ Parent ]
All pipe joints and gaskets through the pressure vessel, including the lid and the pressure relief valve themselves, are likely candidates for leaks, especially after high pressure and temperature episodes earlier in the disaster.

"It is not necessary to have hope in order to persevere."
by ARGeezer (ARGeezer a in a circle eurotrib daught com) on Fri Apr 15th, 2011 at 10:38:39 AM EST
[ Parent ]
Number 2 could well be a case where much of the steam is condensed back into water which leaks out of the containment vessel into the trenches.

"It is not necessary to have hope in order to persevere."
by ARGeezer (ARGeezer a in a circle eurotrib daught com) on Fri Apr 15th, 2011 at 10:40:53 AM EST
[ Parent ]
Er - is it not obvious from visual inspection which containment vessels are leaking, and how?

Or have the high radiation readings around the cores made inspection impossible?

by ThatBritGuy (thatbritguy (at) googlemail.com) on Fri Apr 15th, 2011 at 11:06:29 AM EST
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Well the one with the most inhabitable drywell round the reactor is testing at 18 Sieverts per hour, If there is any remote pictures from inside the reactor buildings, then they havent been publicly released

Any idiot can face a crisis - it's day to day living that wears you out.
by ceebs (ceebs (at) eurotrib (dot) com) on Fri Apr 15th, 2011 at 11:55:47 AM EST
[ Parent ]
is it not obvious from visual inspection which containment vessels are leaking, and how?

#1 still had significant pressurization as of the injection of nitrogen last week end. #2 has been shown in diagrams to have had a breach of the torus and seems to be the source of a lot of the water in the trenches, but I haven't seen a lot of explicit information in the press. Have I missed significant photographic evidence from inside reactors? The release of steam into the atmosphere is obvious, but the source of those leaks is less so. To me pipe joints and gaskets where pipes penetrate the reactor pressure vessel remain obvious sources, but with the loss of pressurization in #2 and #3 it seems hard to say from the available information.

"It is not necessary to have hope in order to persevere."
by ARGeezer (ARGeezer a in a circle eurotrib daught com) on Fri Apr 15th, 2011 at 12:52:49 PM EST
[ Parent ]

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