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Old 01-22-2010, 10:54 AM
 
1,112 posts, read 2,488,947 times
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so Progress Energy are going to move a 670 ton generator that hasn't been used for 30 years from Three Mile Island to Holly Springs I know the cost of the expansion at Shearon Harris has more than doubled to $9bn but not sure this is a great idea to reduce cost. It's scary enough having a nuclear plant 15 miles down the road let alone one with such pedigree


Three Mile Island generator moving to Shearon Harris :: WRAL.com
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Old 01-22-2010, 11:08 AM
 
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Why is that scary? The generator didn't pose the issue w/ 3 Mile Island.

I for one would much rather have a nuke plant vs. coal or gas.
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Old 01-22-2010, 11:10 AM
 
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There wasn't much else Progress energy could do with it for the past 3 decades because they were not allowed to build any new sites until just recently. It's not like the generate part is involved in any part with the nuclear part of the plant, it just accepts the hot steam.
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Old 01-22-2010, 12:50 PM
 
Location: Portland OR
378 posts, read 834,552 times
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The generator wouldn't have been affected by the 3 Mile Island incident + it's a heck of a lot cheaper to refurbish than purchase a new one = not a big deal

/electrical engineer
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Old 01-22-2010, 12:57 PM
 
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well if it was used for 10 - 20 years at TMI and has been sitting around rusting for 30 years it sure as heck worries me when nuclear issues are concerned and a major component is 50 years old. Thats my 2 cents


Quote:
Originally Posted by danwilsonbsee View Post
The generator wouldn't have been affected by the 3 Mile Island incident + it's a heck of a lot cheaper to refurbish than purchase a new one = not a big deal

/electrical engineer
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Old 01-22-2010, 01:34 PM
jgb
 
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I was a child, living not far from TMI when the incident occurred. My mom was pregnant with my sister, she didn't know whether to trust the news reports that everything was OK and my dad was on business in Orlando. So, we hopped on a plane to join my dad and I got to go to Disney World with my mom. How cool! And all because of a meltdown!!

Guess it's following me there . .
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Old 01-22-2010, 01:43 PM
 
1,840 posts, read 5,127,165 times
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Quote:
Originally Posted by Beermat View Post
well if it was used for 10 - 20 years at TMI and has been sitting around rusting for 30 years it sure as heck worries me when nuclear issues are concerned and a major component is 50 years old. Thats my 2 cents
As Zinner said, the generator has nothing to do with the nuclear reactor.

1) Nuclear reactor heats water to make steam (no, the steam is not radioactive).

2) Steam moves through pipes to generator.

3) Spinning of turbines "generates" electricity.

Much like in a coal fired plant, burn coal, create steam, spin turbine, generate electricity.

Get it?
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Old 01-22-2010, 02:15 PM
 
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And I bet you didn't know this, all the parts used to build the reactor sites all have fault data and reliability data documented down to the nuts and bolts used to hold things together. They know exactly how long they can last before they have a "chance" to fail what that chance is and how to mitigate the failure when it occurs.

Despite what the critics say they don't just slap these reactor sites together. It takes years just to certify the plans.
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Old 01-22-2010, 02:45 PM
 
Location: Portland OR
378 posts, read 834,552 times
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Quote:
Originally Posted by Beermat View Post
well if it was used for 10 - 20 years at TMI and has been sitting around rusting for 30 years it sure as heck worries me when nuclear issues are concerned and a major component is 50 years old. Thats my 2 cents

Thankfully, before they buy these things they'll have no doubt done a full engineering feasibility study. I used to work in a LFG (landfill gas) power plant and the biggest enemy in power generation is moisture. So long as this was kept clean and dry - The housing and other non-wear components should be good to go. In fact, the Hoover dam is actually much older (1936) and even though much of the sensitive equipment has been updated most large generating components are original.
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Old 01-22-2010, 02:49 PM
 
Location: Cary, NC
365 posts, read 895,808 times
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I don't like the Holly Springs plant, and I don't like an aging TMI device there. The trouble with nuke power is it is built and run by man. Man is imperfect, and is corruptible. Power and greed. Mix that with nuke technology, where when things go bad they can catastrophically go BAD, then you have a recipe for disaster.
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