Palisades Nuclear Plant Shutting Down Before VY?
Posted in the Brattleboro Forum
#1 Jan 30, 2014
17 new flaws in the CRDM housing...
New flaws are overwelming the plant...
What a huge breakdown in fedural oversight...
#2 Jan 30, 2014
"I am just saying, through the history of the NRC and Entergy over CRDM leaks and shutdowns...they have demonstrated utterly no understanding of metallurgy crack development or crack growth rates. It leaks over and over again, leading to over and over again to destructively damaging equipment with unnecessarily shutdowns between outages.
If this metallurgy science worked, it would perfectly predict defects, crack and leaks...it would cause them to use materials and engineering designs to prevents defects. Palisades would never again be baffled by any kind of corrosion in any metals. The science they like, is how to extract the most in your pocket profits out of machine not caring about risk. Basically the elite class of our nation extracting the most money they can out of a system that serves our common good...sucking the life blood to death out of a vital public service we all need.
The thrust of the material and metallurgy science and PhD metallurgist education is to figure our how to scam out lengthening the time between inspections and replacement without better science based materials and engineering designs.
It is as if they put no money into money into metallurgy to prevent rust, corrosio and science based materials...they place all their metallurgist, PhD education and material science, place their money betting its cheaper repairing leaks and getting the regulator to ignore the leaks, coming from I don't know where...
Let me tell you where this voodoo pay for play PhD metallurgist absolute proof science we got a defect and cracks growing has gotten us. The mythical perfect god's eye view is we know everything about the defect,but they never can predict it coming. They use this advanced education and high science to increase the length between inspection and replacement.....it all about them thinking they have god's eyes view they understand every aspect of every condition in their extraordinarily complex obsolete machine to prevent the beyond Fukushima meltdown. All of the inspections and crack growth is based on a acceptance of the risk of a beyond a Fukushima level accident. They get cracks and leaks over and over again...the myth they project to you is they have a prefect god's view understanding on what is going on in their engines and all around them to get into the next outage where they won't do anything about the known cracks.
#3 Jan 30, 2014
So this is damage caused by all their recent equipment damaging shutdowns!
#4 Jan 30, 2014
You're a vulture.
#5 Jan 31, 2014
"While the beach marks were correlated with refueling outages, the lack of variability in oxygen content over time indicates that temperature/pressure cycles rather than oxygen variability may be responsible for the cyclic nature of crack growth."
And all CRDMs were replaced in 2001...
#6 Jan 31, 2014
There is the smoking gun!
"The rate of crack growth for this failure was estimated based on the number of beach marks present. The time intervals proposed between beach marks were much shorter than refueling intervals and are consistent with plant outages involving pressure/temperature cycles which may or may not include oxygen ingress."
#7 Feb 1, 2014
-eh shaddup ya damn anti-nuke hippy!
Ain't no problems with any nukes ever and if they ever have had problems, they were remediated
And everything's just fine over in Japan so quit trying to stir up fear
Besides, the experts say radiation is good and healthy!
http://www.google.com/#q=radiation+is+good+fo... 's+send+Ann+Coulter+to+Fukushi ma
They have a new mascot now for those wonderful remediated General Electric Mark I reactors at Fukushima-->
#8 Feb 1, 2014
It is atrocious nuclear professionalism not yet a meltdown...
#9 Feb 2, 2014
Basically three special since 2001, 2002 and 2012...all the violations a carbon copy of each other.
They later find many more cracks/flaws on the more thorough inspection...
#10 Feb 2, 2014
They got to replace all the CRDMs...not just the ones with cracks in them...
They know a crack could develope in as little a 11 months...they have proof they have no ability to predict when a flaw develops.
#11 Feb 2, 2014
Thu January 30, 2014
Palisades Nuclear Plant proposes new design for historically problematic mechanisms
By Lindsey Smith
Credit Mark Savage / Entergy Nuclear Operations
The control rod drive mechanisms are a part of the nuclear reactor, which is inside the circular building on the left.
The Palisades power plant is proposing a new design that officials hope will help end a recurring problem.
The heat generated by its nuclear reactor is restrained in part by 45 control rods. The rod mechanisms at Palisades have an uncommon design (one of only two plants in the country) and have had a lot more problems than at other plants.
All the control rod drive mechanisms were replaced in 2001. But a leak from one of the rods in 2012 forced the plant to shut down. Soon after, federal regulators issued the plant a violation for failing to prevent a reoccurrence of a significant condition adverse to quality.
A recent inspection prompted by that shutdown unveiled flaws in more than one out of every three rods.
It is not good that they found flaws but, in a way, its a good story in that the inspection and the oversight program that was set up after the last issue worked, Nuclear Regulatory Commission spokeswoman Viktoria Mitlyng said.
During the shutdown in 2012, Palisades replaced the leaking control rod drive mechanism. It tested eight others, which showed no flaws at the time.
Mitlyng says during this latest inspection the plant tested all 45 rods, 17 of which showed flaws. Two of those flawed rods had been tested in 2012. This test was a different kind of test than the ones completed in 2012. The flaws are not visible to the naked eye.
Palisades spokeswoman Lindsay Rose says the plant will replace 38 of the control rod drive mechanisms.
It is certainly a proactive measure to be replacing some of the housing that did meet our inspection criteria, Rose said,We want to remove them and replace them with the better design that we have.
She says the new design includes a different kind of stainless steel with fewer welds. Mitlyng says the design appears to have a different overlay and is more uniform.
Its complicated metallurgical stuff because it has to do with the place on the mechanism with how much oxygen can be trapped. Its a particular design of the control rod drive mechanism housings that Palisades has. There a lot of factors here, Mitlyng said.
When asked why the plant wouldnt replace all 45 control rod drives with the new design, Rose said the plant said the replacement of 38 was all we have the ability to do with this outage.
Mitlyng says the NRC hasnt determined whether the new design will be an improvement. But regulators are pleased the plant will replace the flawed rods.
If the proposed solution can address some of these concerns we will have higher confidence that the design itself will help them avoid the same kind of problems in the future, she said.
In the past, the Union of Concerned Scientists has argued that Palisades needs to resolves the underlying problems with the control rod drives. The organization says the NRC needs to do more to make sure the root cause is identified and fixed.
The root cause of the 2012 through wall crack and the flaws discovered in the latest inspection have not been determined.
#12 Feb 2, 2014
I believe it is illegal for them to operate that plant knowing a flaw could show up between outages. They have proof a crack can show up within 18 months and may leak.
There is no doubt what-so-ever all these preventable shutdowns in recent years has destroyed their CRDM system plant heatups and shutdown predominately create the cracks!
#13 Feb 3, 2014
It took them 6 months to replace all the CRDM in 2001...
#14 Feb 3, 2014
Can you imagine the risk Entergy and the NRC is taking if any one those remaining CRDMs have a leak...
This center rods have the most rod worth...meaning they play a disproportional role in controlling reactor power than any of the other rods.....
#15 Feb 6, 2014
DEGRADED CONDITION DISCOVERED ON PRESSURIZER NOZZLE WELD DURING TESTING
"On February 5, 2014, during planned inspections, an ultrasonic examination performed on weld PCS-6-PRS-1C1-1 (RV-1041) revealed two axial indications in the root area of the weld. The weld containing the indications is the nozzle to safe end dissimilar metal weld on the flange for pressurizer safety valve RV-1041. These two indications do not meet applicable acceptance criteria under ASME, Section XI, IWB-3600,'Analytical Evaluation of Flaws,' or ASME Section Xl, Table IWB-3410,'Acceptance Standards,' and will require a repair or replacement activity in order return the weld to an acceptable condition.
"The plant was in cold shutdown at 0% power for a planned refueling outage at the time of discovery. Replacement or repair actions will be completed prior to plant startup from the outage.
"This condition has no impact to the health and safety of the public.
"The licensee notified the NRC Senior Resident Inspector.
"This report is being made in accordance with 10 CFR 50.72(b)(3)(ii)(A), since indications were found that did not meet acceptance criteria referenced in ASME Code, Section XI."
#16 Feb 6, 2014
#17 Feb 6, 2014
Think about it....Palisades is in the same market as Exelon?
#18 Feb 6, 2014
Exelon may shut down nuclear plants in profit struggle
By Julie WernauTribune staff reporter
12:06 p.m. CST, February 6, 2014
Chicago-based Exelon Corp. said Thursday on a conference call following its quarterly earnings results that it will shut down nuclear plants to save money if it doesn't see a path to steady profits this year.
The companys large fleet of nuclear plants have struggled to remain profitable as they attempt to compete with subsidized renewable generation and stubbornly low natural gas prices, which have driven down the price Exelon receives for power.
#19 Feb 6, 2014
Exelon owns 10 nuclear power plants, six of which are in Illinois. Analysts have signaled that if power prices dont recover its Clinton and Quad Cities generating stations are among the potential closures.
In the meantime, the company said, it is looking for ways to drive up earnings. Exelon said it wants the operator of the electric grid to reward steady so-called baseload power generators like Exelon over that of wind and solar generators whose power is intermittent. At the same time, the company said it continues to lobby for energy policies that would end the subsidization of renewables and help drive more closures at coal-fired power plants.
Exelon continues to believe that 52 gigawatts of coal plants will retire in the power markets it sells into before 2016, and has said investors who hold onto the stock will be rewarded when that market tightening drives up power prices for Exelon.
Profit at Chicago-based Exelon Corp. rose 31 percent in the fourth quarter to $495 million, or 58 cents per share from $378 million or 44 cents per share in the fourth quarter of 2012.
The company said it continues to be pummeled by lower power prices but that those losses were offset by higher capacity prices (a kind of reservation fee for power paid to Exelon) and higher revenue from its three utilities, including Chicago-based Commonwealth Edison Co. This years fourth quarter earnings also saw a bump over last years fourth quarter, which was hurt by Superstorm Sandy.
The nation's largest owner of nuclear plants had sales of $6.18 billion, a slight decrease from $6.25 billion in the same quarter last year.
For the full year, Exelon's revenue was up at $24.9 billion versus $23.5 billion in 2013 and net income grew to $1.72 billion in 2013 from $1.16 billion in 2012 or $2 per share versus $1.42 per share.
#20 Feb 7, 2014
Why did the NRC answer me?
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