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Discussion Starter #1
This one also hits close to home for me as I'm very familiar with the type of work that went awry. One of my co-workers was there when this happened. Fortunatly he wasn't hurt.

The news reporting is typical of not having the whole story or understanding what actually happened.

Unfortunatly, due to company policy I can't share more of what I know about what happened.

Anyway, full investigation underway, etc...

:(

http://rt.com/usa/arkansas-nuclear-plant-accident-170/comments/
 

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Has not been a good weekend in AR energy wise, though Mayflower in no way compares to what happened in Russellvile.

Put in to perspective how big this stuff is that a stator could do that.

TM, just relaying what our news is saying
 

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Unfortunatly, due to company policy I can't share more of what I know about what happened.
I know exactly what you mean. :thumbsup:

I'm glad your friends are ok; this sounded like a routine lift accident.

Industrial accidents suck bigtime; it's hard to move enormous stuff, and easy to damage flesh.

I'm just really happy I've never had to do any of the really dangerous jobs I know of.

Some of the people doing those jobs don't exactly know what they're doing; if they really knew exactly what happened if they screwed up, they wouldn't do it, most likely.

Knowing physics sux sometimes...
The wearable rad shielding suits for the Fukushima workers; think about it.
 

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Discussion Starter #5 (Edited)
Has not been a good weekend in AR energy wise, though Mayflower in no way compares to what happened in Russellvile.

Put in to perspective how big this stuff is that a stator could do that.

TM, just relaying what our news is saying
How big this stuff is? Here's some perspective:

A nuclear power plant size stator weighs about 500 Tons.

That's a million pounds. :eek: 1,000,000 lbs.!

They're about 50 feet long and about 15 feet tall. I've been involved in the replacement of two of these. I just can't imagine the devastation that dropping one of these would cause.

Here's a couple of picture of one I found online.

http://dukenuclear.files.wordpress.com/2012/08/dsc_0315.jpg

http://dukenuclear.files.wordpress.com/2012/08/stator-delivery-to-track-9-8-11-12-015.jpg

Here's an updated article I found online. It says the crash wash heard miles from the site. I believe it!

http://beforeitsnews.com/energy/2013/04/mysterious-fatal-accident-at-arkansas-nuclear-one-triggers-2448544.html
 

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TM is it odd this happened on Easter Sunday morning? Surely you dont do major heavy industrial lifts on a religious holiday morning as part of your SOP?
 

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Discussion Starter #8 (Edited)
It could have been any day of the week. The fact it happened on Easter Sunday morning is just coincidence.

Yes, we make major lifts all the time - day and night - holiday or not - all through the year. Had this lift not gone awry you'd have never known it happened.
 

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Hey TM, do you all use the Incident Command System regularly? It has it's roots in almost everything, so I was just curious. Sorry for the loss in your community, accidents involving equipment of that magnitude are hard to forget.
 

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In my prayers...

I can't even fathom that kind of weight hitting the floor - must have felt like an earthquake!
No wonder it could be heard for miles !!!
 

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How big this stuff is? Here's some perspective:

A nuclear power plant size stator weighs about 500 Tons.

That's a million pounds. :eek: 1,000,000 lbs.!

They're about 50 feet long and about 15 feet tall. I've been involved in the replacement of two of these. I just can't imagine the devastation that dropping one of these would cause.

Here's a couple of picture of one I found online.

http://dukenuclear.files.wordpress.com/2012/08/dsc_0315.jpg

http://dukenuclear.files.wordpress.com/2012/08/stator-delivery-to-track-9-8-11-12-015.jpg

Here's an updated article I found online. It says the crash wash heard miles from the site. I believe it!

http://beforeitsnews.com/energy/2013/04/mysterious-fatal-accident-at-arkansas-nuclear-one-triggers-2448544.html
I hope those that were hurt recover swiftly.
Oh man, this things is HUGE.

Q: How does one move something this heavy? I would expect you would need something like those cranes you see at railroad stations that lift box semi trailers off train tracks -- (or perhaps something bigger).
-g
 

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(or perhaps something bigger).
-g
Yep. There are dedicated cranes just for these jobs built into most power plants; this is a maintenance accident, IMHO.

Something gave while lifting less than it's designed load; this is not a frequent occurrence.

Based on my experience with industrial accidents in general:

Someone either "screwed the pooch", or a mechanical failure caused a "preventable accident".

All depending on whether or not they can blame someone else so their insurance company is happy, pretty much.

Our system sux sometimes.
 

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Discussion Starter #14

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:eek:

(My jaw literally dropped on that one.)

Concrete will not stop something like that.

It looks like it actually drove the entire trailer meant to move it out, Thru the Freaking Concrete Structure.

!!HGDMFS Batman!!

Anyone in the way of such energies do not stand a chance; thus all the regulations and certifications and stuff.

You have to move loads like this; although this kind of replacement happens at every power plant, there are regulations piled on every bolt, nut, and part in any of those particular assemblies just because it's "nuclear".

This crane has probably done this lift many times; at these levels of strength, it only has to fail a bit... once.

Note: the first pic has the stator moving parallel to the beams, the second has the load moving transverse to the beams; the CoG is very different for the two situations... this could add dynamic stress, causing dynamic failure for an otherwise static load.
I am not an expert, this is complete speculation.
 

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Based on my experience with industrial accidents in general:

Someone either "screwed the pooch", or a mechanical failure caused a "preventable accident".
My thoughts exactly.

In my experience inspections and mainteance of cranes is a joke to be nice. Though we only ever got to 50-70% of rated capacity--big difference between 7tons and 5000 tons and 4' and 20'+.
 

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Discussion Starter #17 (Edited)
My thoughts exactly.

In my experience inspections and maintenance of cranes is a joke to be nice. Though we only ever got to 50-70% of rated capacity--big difference between 7tons and 5000 tons and 4' and 20'+.
The load was about 500 tons. I don't believe the crane was rated as high as 5,000 tons. But yea, big difference between the 7 ton units that you're familiar with and this.

Not to get too off topic about the accident itself, I really wish to convey my deepest sympathy to the victims of this tragedy. R.I.P. Wade Walters. :(

It's my understanding that OSHA arrived yesterday or today to investigate.

More pictures have surfaced here: http://www.couriernews.com/view/full_story/22135931/article-Pictures-of-ANO-accident-scene-surface-online?instance=top_news

These photos give you an idea of the scale of what happened.

http://commentarius-ioannis.blogspot.com/





 

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PostWhore, The AFDB is on a lil tight.
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How do you even clean up such a mess. THats dangerous in itself. Thats some serious industrial mess. At least 1 died not more. Not good but really could have been worse.
 

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Discussion Starter #19
Yes, it's very dangerous. Cleanup won't begin for quite some time as they'll need to conduct a full investigation of the crane collapse and then figure out how they're going to clean it up and then bring in the heavy equiptment to clean it up.

I read that in addition to the "senior represenative" OSHA inspectors/investigators the NRC has sent two additional inspectors out to the site to assist the two NRC inspectors already there. I'm sure that's just the tip of the proverbial iceberg of who's there now to assess what happened. I also read that the Chief Operating Officer (C.O.O.) - right hand man to the CEO - of Entergy was at site.

Another update that I found online:

http://www.couriernews.com/view/full_story/22148735/article-ANO-contractor-issues-statement-on-employee-s-death--IDs-injured-worker?instance=top_news
 

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Just to get a sense of scale, do any of you guys have a guess as to the diameter of the braided steel cable that is holding this stator up?

Are we talking 6" diameter? foot?

I'm just trying to wrap my head around the size of this thing.
-g
 
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