ScribbleLive

they are watching us.

or gps navigation.

back for a bit

@Will you are a marvel, a treasure , thank you :)

@Panserbjorne9 dunno they certainly have us guessing

HOUSTON (Reuters) - Dominion Resources workers were inspecting the North Anna nuclear power plant in Mineral, Virginia on Wednesday, a day after the largest earthquake to hit the U.S. East Coast in six decades knocked both reactors offline, the company said.

A series of plates that recorded Tuesday's 5.8 magnitude quake were sent to an outside company for analysis, a Dominion spokesman said.

"This is the first time a seismic event has shut down one of our power stations," said Dominion spokesman Jim Norvelle. "We are seeking a quick turnaround."

Dominion reported no "major" damage to the North Anna station which automatically shut when the earthquake disrupted the flow of outside power needed to operate the plant's many safety systems.

Diesel generators started up, as designed, to keep the reactors' radioactive cores cool until off-site power was restored about seven hours after the 2 p.m. EDT earthquake.

In addition to looking for possible quake damage at North Anna, federal nuclear regulators want to see seismic data from the site to determine if the quake was stronger than the plant was designed to withstand.

That will be critical in determining how long the 1,806-megawatt station will remain shut, officials said.

"In light of the quake's strength and proximity to the plant, the NRC will soon decide whether to conduct a follow-up inspection, aimed at determining how the quake compares to what the plant was designed to withstand," the NRC said in a statement. ------- NOW my comments to this statement on North Anna, 1) if the seismic trips are in service their response time is much much much less that that of the off site power and they should have not said an off site power loss caused the reactor to shutdown - 2) a confession of no major damage is an admission that there was damage and we should know what it is - 3) the NRC should not say.. "in light of what happened they may perform a "follow-up" visit to see if it was higher than the plant was designed.... this is the kind of information that makes people upset

@Dean. They put unit 1 into cold shutdown but still have unit 2 in hot standby. They say they are now going to put 2 into cold shutdown. Is there a technical reason for doing this vs. putting both in cold shutdown at the same time? I wondered if the two reactors are too much for the lake to deal with.

@ lilly.. I think it sounds like they had @2 in a stable but hot standby and focused on #1 first, in light of what has happened all over ,,, and then, hopefully they will get #1 there also, In addition, they did do some venting off steam on the plant and that would put some kind of transient on the system that would have to be stabliized

time for my ride...

@lillymunster begining to sound like they didnt like the expense the automatic system cost them

the pressure graphs have always been puzzling me. now it seems to make sense.

and we have a significant drywell pressure rise from core dripping on cement in #2, more significant than in #3 !

@Ian in #2 graph, you can even see the predicted pressure "shaking" (up and downs) on "structural relocation, core slump and vessel dryout" before core breach !

@Peter Melzer some do. Jeez.