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oil mac
10-28-2009, 08:48 PM
Ghastly accident of August 17th

On Aug. 17th, at the Ayano -shushenskaya hydro electric power station situated on the Yeinisei river in Russia there was a terrible accident resulting in the deaths of about 80 men, From the scant knowledge i have heard of this accident, it would seem to have occured, When a catastrophic surge occured in the draft pipe of one of the 10 big water turbines, I am led to believe this water pressure, ejected 950 tons of turbine &generator up through the turbine hall floor, causing major damage to the other generators & an explosion in a large transformer, totally demolishing the whole turbine hall,and destroying the other turbines

This large power station, is apparently the sixth biggest hydro electric station in the world, and the damage it would seem will run into millions of dollars It would seem this was not a particularly old facility
Has any of our members heard of this disaster ?

John Stevenson
10-28-2009, 08:57 PM
Video here.

http://www.metacafe.com/watch/3444637/moment_of_the_largest_accident_on_the_largest_hydr oelectric_power_station_of_russia/

Ignore the advert at the start.

Plus another report here that downplays it.

http://www.eng.rushydro.ru/press/news/7550.html

.

dm1try
10-28-2009, 09:02 PM
yes, sure. here's some video of the accident:
http://www.youtube.com/watch?v=1f3DrZbH0-c
http://www.youtube.com/watch?v=3CPlDh2Aj2w

Pherdie
10-28-2009, 09:32 PM
yes, sure. here's some video of the accident:
http://www.youtube.com/watch?v=1f3DrZbH0-c
http://www.youtube.com/watch?v=3CPlDh2Aj2w

The shots of the lobby remind me of "quitin' time" where I used to work.....

Fred

boslab
10-28-2009, 09:43 PM
if you want to f things up big style you can always count on Russia to do somthing silly [we wont mention Chernobyl, oops i did]
mark

John Stevenson
10-28-2009, 09:46 PM
yes, sure. here's some video of the accident:
http://www.youtube.com/watch?v=1f3DrZbH0-c


I'll bet that knocked the Health and Safety certificate off the wall..............

.

andy_b
10-28-2009, 10:02 PM
the Russians seem to have some problems with power generation. i'm thinking millions of dollars is an understatement.

andy b.

Carld
10-28-2009, 10:07 PM
That's kind of scary and it looks like it destroyed the whole generator room.

Arcane
10-28-2009, 11:11 PM
Speaking of things that have slipped under the radar, does this one qualify?
http://dsc.discovery.com/news/2009/10/23/amelia-earhart.html

wierdscience
10-28-2009, 11:14 PM
Geez what a mess,did you guys notice the wrinkled 10x24 WF beams:eek:

hardtail
10-29-2009, 12:09 AM
Everyone seems to be in a panic to get away once outside except for the lady smoker taking a stroll and getting ready to lite up.........LOL

steve45
10-29-2009, 12:17 AM
That accident sure didn't get much attention, but a friend emailed me a bunch of pictures and preliminary investigation findings. What a mess!

MickeyD
10-29-2009, 12:28 AM
Because it is offline there are a lot of aluminum smelters in the surrounding area that are going to be down for several years. This has helped drive the price of aluminum back up to almost where it was at the peak.

Falcon67
10-29-2009, 12:55 AM
I think I saw pics of that on CNN here a while back.

Evan
10-29-2009, 01:26 AM
The question is how did it happen? Did the penstock gate at the top just fall off all at once?

motorcyclemac
10-29-2009, 01:48 AM
The question is how did it happen? Did the penstock gate at the top just fall off all at once?
Right Evan....that is my question...

Where did the enormous over pressure...increased volume come from?

I am thinking this wasn't an over flowing urinal..

Evan
10-29-2009, 02:09 AM
From the look of it I would say it was more than just a large increase in flow. It must have been a very sudden release of water at the top at the full carrying capacity of the pipe causing a huge water hammer effect. It's not just the pressure of the weight of the water but the momentum of it falling down the empty penstock. I wonder what the air pressure ahead of that water would have been?

motorcyclemac
10-29-2009, 02:17 AM
a huge water hammer effect. It's not just the pressure of the weight of the water but the momentum of it falling down the empty penstock. I wonder what the air pressure ahead of that water would have been?


Yes! Water hammer.. I was thinking exactly that.. We used to have hot water radiators in my old high school. Occasionally they would water hammer and nearly tear them off the wall. It was LOUD and potentially destructive. It literally loosened many of the lag bolts holding them down.

So...Makes me wonder if somehow the penstock valve was momentarily closed to allow the water to fall down in the head pipe...and then suddenly snapped wide open... Massive water hammer with a huge head of air ...BOOM!

Cheers
Mac.

dm1try
10-29-2009, 02:57 AM
The question is how did it happen? Did the penstock gate at the top just fall off all at once?
well, there's a commission report. first, there was a fire on another power plant at Bratsk which disrupted communications and caused it to go off the grid. that placed the load of power and frequency regulation on Sayano-Shushenskaya. to cope with the load they started the generator no 2 (the failed one). the power-regulation system commanded to change the power production of the plant 12 times between 2.8GW and 4.4GW. that caused the generator no 2 to go thru non-recommended zone (transition processes with high vibration) 6 times. finally, due to metal fatigue, studs which hold the lid of turbine no 2 failed, the lid flew off and water rushed into the machine room.
something like that...
funny, the generator no 2 was working for 29 years and 10 months, just 2 months short of 30-year working period set its manufacturer...

Evan
10-29-2009, 03:26 AM
I recall reading an account of what would have happened aboard the USS Thresher nuclear submarine when it lost power and sank below maximum hull depth of around half a mile. The hull would have failed catastrophically with water suddenly entering in a wall at something around 1400 psi. This would have compressed the air inside the remaining sections to momentary red hot temperature which may have persisted for some time in a last remaining compartment if hatches were shut or slammed shut by the force of the water. I was 14 at the time and the image of that stuck with me when they later revealed what had happened.

macona
10-29-2009, 03:38 AM
I was in the powerhouse of the The Dalles Dam on the Columbia when something went awry. The entire dam started shaking and alarms went off as one of the generators was emergency stopped. There was an odd smell from something that was used to quench the circuit breakers. I want to say Sulfur Hexaflouride but I am not sure.

Peter S
10-29-2009, 05:34 AM
Has any of our members heard of this disaster ?

Yes, it was reported on the BBC World Service which I listen to on the radio here in Auckland, not a bad radio service if you want to hear news from around the world. Though they are slipping a bit and dumbing down of late - they even gave coverage to that boy in the balloon rubbish even when they knew it was fake, and to their discredit made the fakeness a story. There have been subsequent news stories about the hydro accident on the World Service - it is a pretty huge disaster, no doubt covered up in the best Russian traditions.

oil mac
10-29-2009, 09:07 AM
Thanks for the responses folks, all of you never stop to amaze me of the depths of knowledge &how someone can dig up info on almost any subject,
What a sad mess that became of a vast &what looked like a good facility, I wonder if a lot of disasters in that vast country are the result of the hangovers of the old soviet systems? Politicians still interfering in all sort of aspects of industry etc
Come to think on it our present day politbureau over here are meddling more &more oops sorry guys !Lets not go down that road.

A.K. Boomer
10-29-2009, 09:15 AM
It just occurred to me that while I was watching the video I was drinking a nice hot cup of organic Daz-Bog,
Two for the price of one one could say but that would be rude, Bad power plants --- good coffee though.

fortcollinsjerry
10-29-2009, 02:37 PM
it's pretty interesting what security cameras and capture these days isn't it

dm1try
10-29-2009, 03:25 PM
some more pre-accident photos of the plant...
http://4044415.livejournal.com/51285.html
http://4044415.livejournal.com/51685.html
http://community.livejournal.com/ussr_industry/2164.html

oil mac
10-29-2009, 06:09 PM
When one looks at the cleanliness & huge size of this big facility, + the very fine models &other artifacts on display in this plant, It is a great shame it was destroyed so violently, One also feels saddness for the loss of life also
sounds a "similar" scenario, to the sudden demise of Chernobyl, Playing silly beggars at Chernobyl, where nobody would make a decision to shut down in an emergency, In this disaster banging the load up &down on No2 turbine wasnt too clever either, Wonder if in the 30 years of runningthis turbine, had she ever had a major ovrerhaul?

madman
10-29-2009, 06:28 PM
Dont Laugh. I have a friend in Russia and he says everyone drinks on the Job. Quite a common occurence. Nothing like drunken operators at the controls jind of reminds me of ther Aerospace machining days Where I worked for 15 years LOL

Davidhcnc
10-29-2009, 06:50 PM
http://en.wikipedia.org/wiki/Sayano-Shushenskaya_hydroelectric_station

Some detail of the accident and condition of the plant prior.