storm reports

[tony sayer]

In article , Java Jive scribeth thus

What any turbs next to the nuke;?..

Dunno if Mike the supergrid man is around but there must have been quite an incident to cause that to trip off line?.

[tony sayer]

In article , MM scribeth thus

If you had listened to the weather forecast they did state that there would be very strong winds to the south side of the depression but very light winds to the north and you could see that on the Synoptic chart quite clearly....

[Dave Liquorice]

"Debris" hit the 275 kV lines according to the very brief press release on the EDF website. One line was back up by 1610, the other was due the following morning.

Bet the debris made a bit of bang and presumably tripped the line protection thus isolating Dungeness that had no option but to shutdown.

[Jim K]

You stated:-

I maintain that even an ass like you would eat honey flavour anything before you starve.

Doubtless you will argue the toss....

Jim K

[Java Jive]

YOU made the implication, based on YOUR bigotry. It was just another example of the pro-nuclear bias here.

The >

[Java Jive]

Oh, here we go again.

Actually I would be concentrating on getting myself into a position where I didn't have to make the choice.

Anyway, it was just a figure of speech. Lighten up.

[Andy Burns]

Speaking of which, I see that Hans Blix has started making noises in favour of Thorium reactors ...

[The Natural Philosopher]

and the elusive Dr Nils Bohmer, (telling us the answer is reneable energy) allegedly a 'nuclear physicist' who seems to be little more than a CND activist..

"9/1 Nuclear physicist Nils Bohmer "My biggest concern at Fukushima is Earthquakes and Rain entering cracks in the containment vessels. Water will act as a moderator which will start up an uncontrollable chain reaction; that would be catastrophic"

"Nils Boehmer, the chief Information officer and a Nuclear Scientist for the Norwegian foundation, Bellona, confirmed that both the US and French intelligence had information from inside Japan within days, that the situation was far worse than was being reported. They recommended that their expatriate citizens evacuate from a much larger radius away from the Fukushima Daichi plant than was being suggested by Japanese officials. ?That is how we knew that the situation was much more serious than the media was telling people,? Boehmer added, ?Both the U.S. and France have very good intelligence inside Japan and on nuclear issues.?

And yet we now know that the situation was not worse, in fact it was a lot better.

In short Nils is a serial liar working on hbehalf of renewable energy concerns in a deeply alarmist and anti-nuclear stance .

So of couerse, who else is going to be te BBCS 'balanced viewpoint'

It makes you sick.

[Dave Liquorice]

Once Dungeness is fully back on line it will be chucking out over a GW 24/7 for months. That is reliabilty not how fast they can recover from a forced and unplanned shutdown.

Can you tell us how much energy the windy mills will be providing next week? Let alone for the next 18 months in the case of reactor

22?

[tony sayer]

In article , Java Jive scribeth thus

Its quite interesting that Dave said here the other day that EDF stated that the fault was on the 275 kV grid despite Dungeness being fed by a two route 400 kV line. The only bit of the 275 network seems to be very short hop between the transformer house to the switch house actually on the reactor site..

So I presume that the station didn't have a "load" and had to be cooled to dissipate the power?..

Anyone know if that's the case?..

[Java Jive]

[Java Jive]

[Tim Streater]

Don't be a sap. The failure in question was a grid failure, that could have happened to any power station. The reliability that is "hyped" here relates to the station's ability to generate volts.

If the grid is down, then you're buggered _whatever_ generation method you're using.

[The Natural Philosopher]

The impressions I got from the reuters report was that the damage was in fact on the site.

Not really that much. It would scarm, and then use aboyt 40MW of diesel to keep the pumps running to cool it, and te staion operational. BUT agrs can simply use passive cooling in the gas part of the circuit and get away with it.

Decay heat in the cores would be about 20MW per reactor after scramming. NOt a huge amount to deal with and the punps were all working, so no real issues to handle it.

Ther is a scram event on a UK reactor every 6 weeks or so for one reason or another - faults unconnected with the nuclera part of things (as this was) mostly.

steam pipes leaking, or fouled condensers or generator issues...

[tony sayer]

So not really the fault of Nuclear power then just a HV distribution problem!...

[Jim K]

Oh deary me no no no :-D

Jim K

[John Williamson]

The generation capability was no affected. What was affected was the ability to transmit power to and from the site. The same problem would also have effectively disabled a coal, gas, hydroelectric or diesel station until repairs were carried out. It would also have disconnected a windfarm, but they all shut down in high winds anyay. The only difference is that the repair could take a day or two longer for the nuclear plant.

[Java Jive]

"The company said in a separate statement that both reactors were shut after power TO the site was cut off." [my caps]

AIUI, the plant shut down because it needed power to run its cooling systems, but wasn't capable of just ticking over to provide that power itself. Hence instead of being off line just for the duration of the break, it had to be shut down completely, which means that it takes a week or so to get it back on line.

AFAIAA that doesn't happen with other types of generating plant.

That is a weakness of the design, which it makes it less reliable. It has nothing to do with the grid per se.

[Java Jive]

These figures do not allow for the reduction in capacity factor of a nuclear power plant being unexpectedly closed for a week by high winds.

[Java Jive]

Not quite correct, see my reply to Tim.

Exactly, once the grid was back up, other types of energy come quickly back on line, but not nuclear.

A week.