Showing posts with label reactors. Show all posts
Showing posts with label reactors. Show all posts

Friday, September 14, 2012

Flood Threat To Nuclear Plants Covered Up By Regulators, NRC Whistleblower Claims

In a letter submitted Friday afternoon to internal investigators at the Nuclear Regulatory Commission, a whistleblower engineer within the agency accused regulators of deliberately covering up information relating to the vulnerability of U.S. nuclear power facilities that sit downstream from large dams and reservoirs.

Fort Calhoun Nuclear Facility
The letter also accuses the agency of failing to act to correct these vulnerabilities despite being aware of the risks for years.

These charges were echoed in separate conversations with another risk engineer inside the agency who suggested that the vulnerability at one plant in particular -- the three-reactor Oconee Nuclear Station near Seneca, S.C. -- put it at risk of a flood and subsequent systems failure, should an upstream dam completely fail, that would be similar to the tsunami that hobbled the Fukushima Daiichi nuclear facility in Japan last year. That event caused multiple reactor meltdowns.

In the letter, a copy of which was obtained by The Huffington Post, Richard H. Perkins, a reliability and risk engineer with the agency's division of risk analysis, alleged that NRC officials falsely invoked security concerns in redacting large portions of a report detailing the agency's preliminary investigation into the potential for flooding at U.S. nuclear power plants due to upstream dam failure.

In addition to the Oconee facility, the report examined similar vulnerabilities at the Ft. Calhoun station in Nebraska, the Prairie Island facility in Minnesota and the Watts Bar plant in Tennessee, among others.

Perkins was the lead author of that report, which was completed in July of 2011 -- roughly four months after an earthquake and subsequent tsunami flooded the Fukushima Daiichi nuclear power plant in Japan, cut off electric power to the facility and disabled all of its backup power systems, eliminating the ability to keep the reactors cool and leading to a meltdown.

The report concluded, among other things, that the failure of one or more dams sitting upstream from several nuclear power plants "may result in flood levels at a site that render essential safety systems inoperable." High floodwaters could conceivably undermine all available power sources, the report found, including grid power, emergency diesel backup generators, and ultimately battery backups. The risk of these things happening, the report said, is higher than acceptable.

"The totality of information analyzed in this report suggests that external flooding due to upstream dam failure poses a larger than expected risk to plants and public safety," Perkins's report concluded, adding that the evidence warranted a more formal investigation.

In response to the report, the NRC launched an expanded investigation, which is ongoing. It also folded the dam failure issue into the slate of post-Fukushima improvements recommended by a special task force formed in the aftermath of that disaster. But in a press release dated March 6 of this year, the agency said the report "did not identify any immediate safety concerns."

The NRC made a heavily redacted copy of the report publicly available on the NRC website the same day.

"Nuclear power plant designs include protection against serious but very rare flooding events, including flooding from dam failure scenarios," the agency release noted. "Dam failures can occur as a consequence of earthquakes, overflow, and other mechanisms such as internal erosion and operational failures. A dam failure could potentially cause flooding at a nuclear power plant site depending on a number of factors including the location of the dam, reservoir volume, dam properties, flood routing, and site characteristics." More

 

Thursday, April 12, 2012

Bill Gates Never Ran an Energy Company

Last year, Bill Gates noted in an interview with Alan Murray of the Wall Street Journal that technologies like solar photovoltaics and LED lights were "cute" but could never deal with the bigger issue of climate change and powering the developing world.

And, this week, writer Marc Gunther wrote in his postthat "Germany, once the world's leading market for solar power, is pulling back its subsidies. Q Cells, once the world's largest solar company, just went bankrupt.' This isn't happy news."

So, I am writing to point out three things:

1. The solar industry is growing and is significant, but is not going to solve all the ills of carbon;

2. Mistakes are a blessing; and
3. Theory is theory, not a solution

1. Solar Growth: First, let me make note that I, and others, have just spent the last decade in solar creating the solar services industry which, according to the 2011 National Solar Jobs Census published by the Solar Foundation, grew 6.8 percent between 2010 and 2011.

Plus, the solar industry installed $90 billion of equipment last year. That's double the amount of equipment that was installed for the new coal industry.

And, GTM research and Solar Energy Industries Association (SEIA), issued a report that the showed that U.S. installed 1,855 MW (or 1.86 GW) of solar in 2011 and is expected to install a full gigawatt more than that in 2012: 2.8 GW.

GTM Research and SEIA estimate the U.S. solar market's total value surpassed $8.4 billion in 2011.

So, solar is winning and growing. But, no one is saying it is the only solution -- just a compelling piece of the puzzle.

In fact, there is no silver bullet. We must find efficiencies and new solutions in solving the carbon issue in several areas: transport, agriculture, energy, forestry, industry, buildings and waste.

However, when we think about carbon, most of us tend to think of two areas: transportation and electricity. While Bill Gates might label solar and LED lighting as "cute," the numbers seem to suggest otherwise. Both are billion-dollar industries and together with hundreds of other solutions will help reach the $5+ trillion in new investments necessary to make an impact by 2020.

Remember, we did not get to this point with one major offender, and we will not solve our ills with one major solution. More


 

Thursday, February 23, 2012

Danger Zone: Ageing Nuclear Reactors

Following Japan's nuclear disaster last year there are fears the US may be heading for a nuclear catastrophe of its own


In March 2012, a devastating earthquake and tsunami in Japan caused a meltdown at the Fukushima nuclear power plant.

As tens of thousands of people were evacuated from nearby towns and villages, the world waited anxiously to see whether the radioactive fallout would spread across the country, or even be carried overseas.

Unsurprisingly, in the wake of this incident, the nuclear operations of other countries have come under considerable scrutiny.

One such country is the US where more than 100 similar reactors - some of them in earthquake zones or close to major cities - are now reaching the end of their working lives.

Their owners want to keep them running, but others - from environmentalists to mainstream politicians - are deeply concerned.

In this investigation for People & Power, Joe Rubin and Serene Fang of the Center for Investigative Reporting examine whether important safety considerations are being taken into account as the US Nuclear Regulatory Commission (NRC) considers extending the licences of these plants.

The agency has recently come under fire for glossing over the potential dangers of ageing reactors, for becoming too cosy with the industry and for political infighting among the agency's senior executives, which critics in the US Senate and elsewhere say seriously hampers its ability to ensure safety.

The investigation focuses on the Pacific Gas & Electric nuclear facility at Diablo Canyon and two others, which are at Indian Point in New York and Fort Calhoun in Nebraska.

These three sites represent the dangers posed to nuclear power plant safety by earthquakes, terrorism and flooding. More