As Nuclear Dominoes Fall, Davis Besse Remains in the Cross Hairs
The Davis Besse nuclear generating station in Oak Harbor, OH, on the western shore of Lake Erie is back in the cross hairs after last weeks announcement that the crippled San Onofre nuclear power plant in southern California will remain permanently shut down and be decommissioned. The decision by Southern California Edison came 17 months after major problems with its replacement generators caused a crack in piping and a release of radioactive steam into the environment. A broad based coalition of citizen’s groups, governmental officials and environmental organizations waged an epic battle to keep this threat to the Pacific Ocean and the southwestern U.S. permanently shut down.
The San Onofre victory has bolstered a coalition of citizen’s groups working to shutter the Davis Besse nuclear plant while the plant’s owner and operator, First Energy, is planning to replace the plant’s steam generators in 2014. Davis Besse has come closer to a catastrophic accident on the shores of the Great Lakes more times than any other reactor in the country. More recently it has been discovered that the shield building that houses the reactor containment structure is riddled with extensive cracking.
The main impetus cited for the closure of San Onofre was the Atomic Safety Licensing Board’s decision to hold full public hearings on the license amendment granted for replacement of the generators at plant. The decision to hold these hearings came after national environmental organization Friends of the Earth intervened to call for this important skipped step in public transparency.
"The steam generator disaster at San Onofre, and public attempt to avoid similar bungling at Davis Besse, stem directly from the NRC’s [Nuclear Regulatory Commission] 24 year campaign to deregulate the industry," said Terry Lodge, attorney for the coalition of intervenors calling for a public hearing on the replacement of steam generators at Davis Besse.
"At San Onofre and Davis Besse the NRC relied on the utility’s self-reporting as to whether there is anything significant about this very major feat of building and installing technologically different pieces of equipment. There has been a fiasco in three out of the last three steam generator replacements. ‘Cross my heart and hope to die' regulation is totally unacceptable when it comes to nuclear energy," Lodge concluded.
Arnie Gundersen, chief engineer at Fairewinds Associates, Inc. served as the expert witness for Friends of the Earth in their San Onofre intervention. He is also the expert witness on behalf of Beyond Nuclear, Citizen’s Environment Alliance of Southwestern Ontario, Don’t Waste Michigan and the Sierra Club intervening on Davis Besse. In the case of Davis Besse, Gunderson has declared that the “data reviewed shows that First Energy should have applied for a license amendment with the requisite public review six years ago when replacement steam generators were originally designed, ordered and purchased.”
Gundersen’s Davis Besse testimony reported, “The last three steam generator replacement projects orchestrated by licensees sought to avoid the NRC’s license amendment process. By avoiding the license amendment processes for Crystal River 3 in Florida and San Onofre 2 and 3 in California, the owners, Progress Energy (Crystal River) and Edison (San Onofre) caused all three units to experience total mechanical failures.”
A cascading failure of steam generator tubes can lead to a loss of coolant accident and reactor meltdown.
The failure of the steam generator replacements came about because they were largely experimental—newly designed systems did not mesh well with older equipment. Gundersen has detailed nine significant differences between the replacement and original steam generators at Davis Besse concluding that “each and every one of these changes is significant individually, and when taken together prove that the replacement contains many experimental parameters.
The coalition contends that First Energy’s shortcut on safety by its circumvention of an NRC license amendment proceeding, risks repeating the same sort of dangerous mistakes made at San Onofre. It was January 2012 when a steam generator tube rupture at San Onofre released radioactivity and led to the discovery of widespread, unexpected tube degradation in replacement steam generators just over a year old. Thankfully, San Onofre will not operate again.
“Once again, First Energy’s indifference to anything but maximum profit dictates the dance,” said Lodge. “What if this new, experimental design doesn’t work out, just as steam generator replacements in the last three reactors have proven to be failures? For First Energy it’s profits first safety last."
The NRC continues to operate like a used car salesman on behalf of the remaining 100 aging and decrepit lemons that threaten millions of Americans living near dangerous nuclear plants in the U.S. Instead of regulating this industry, NRC officials continue to try and paint a rosy picture of this dangerous technology. Just this week in Oak Harbor the NRC held an open house on Davis Besse’s annual performance review.
NRC representatives spoke glowingly of First Energy’s plans to operate 20 years past its life expectancy after its license expires in 2017. When asked by concerned citizens about the risks posed by replacing the steam generators, an NRC representative just tried to brush the question aside by saying “don’t worry, these are the Cadillacs of steam generators.” This begs the question, did the NRC settle for Kia’s at San Onofre and Crystal River?
“The Japanese parliament has concluded that the root cause of the Fukushima Daiichi nuclear catastrophe was not the earthquake and tsunami, but rather the government-regulator-industry collusion that allowed the atomic reactors to be so vulnerable to a natural disaster,” said Kevin Kamps of Beyond Nuclear. “Davis Besse has been the poster child for just such collusion from the very beginning, through the 2002 hole in the reactor head fiasco, and right up to the present.”
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An All-Rounder<p>Vitamin D levels in the body rise and fall according to sun exposure. If sufficient UV rays reach the skin, the body is able to produce the vitamin itself. However, the human body only derives an estimated 10 to 20 percent of its daily requirement from food.</p><p>The vitamin D that we synthesize from sunlight or food is not biologically active at first. Before the kidneys can produce the biologically active form of the vitamin, known as calcitriol, and release it into the blood, some metabolic processes must take place beforehand.</p><p>In addition, many organs have receptors to which the precursor of calcitriol binds. Further, this substance is also present in blood.</p><p>From this precursor, the organs then produce calcitriol themselves, which the body then uses for countless other processes in the body. This form of vitamin D thus regulates insulin secretion, inhibits tumor growth, and promotes the formation of red blood cells as well as the survival and activity of macrophages, which are important for the <a href="https://www.mdpi.com/2072-6643/5/7/2502/htm" target="_blank">immune system.</a></p>
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Association Versus Intervention Studies<p>Many studies on the vitamin are association or observational studies. "By definition, these studies cannot prove the causal relationship, but only point to mere correlations," said Fassnacht. The physician tries to illustrate this with an example:</p><p>"Imagine two groups of 80-year-olds. One group is spry, active and does sports. If you compare them with another group living in nursing homes, the difference in vitamin D levels will be dramatic. Life expectancy would also be extremely different."</p><p>But to try to explain the difference in fitness by vitamin D status alone is far too simplistic. "Vitamin D levels are a good measure of how sick someone is. But not more," says Fassnacht. </p><p>According to Fassnacht, none of the intervention studies carried out to date -- that specifically examined the effect of vitamin D on various diseases -- has been able to confirm the previous association and laboratory studies or the presumed positive effect of vitamin D.</p>
Further Research Is Needed<p>"If a coronavirus infection is suspected, it is therefore absolutely necessary to check the vitamin D status and quickly correct any possible deficit," said the recommendation of the paper published by the University of Hohenheim.</p><p>"Studies are underway to see whether vitamin D helps in COVID-19 infection, but I personally do not believe that this is really the case," says endocrinologist Fassnacht. Nevertheless, he says it is of course useful to carry out these studies.<br></p><p>"I don't want to rule out that there are actually subgroups of people who benefit from an additional vitamin D dose," he says. After all, this has been proven to be the case with a severe deficit.</p><p>In view of the study situation, Fassnacht does not think much of preventive, nationwide vitamin D substitutes. "My belief that the vitamin helps somewhere is very low. But, of course, I can be wrong."</p>
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