Tritium leaks found at many nuke sites
2011 06 21
By Jeff Donn | SFGate.com
Radioactive tritium has leaked from three-quarters of U.S. commercial nuclear power sites, often into groundwater from corroded, buried piping, an Associated Press investigation shows.
The number and severity of the leaks has been escalating, even as federal regulators extend the licenses of more and more reactors across the nation.
Tritium, which is a radioactive form of hydrogen, has leaked from at least 48 of 65 sites, according to U.S. Nuclear Regulatory Commission records reviewed as part of the AP’s yearlong examination of safety issues at aging nuclear power plants. Leaks from at least 37 of those facilities contained concentrations exceeding the federal drinking water standard — sometimes at hundreds of times the limit.
While most leaks have been found within plant boundaries, some have migrated offsite. But none is known to have reached public water supplies.
At three sites — two in Illinois and one in Minnesota — leaks have contaminated drinking wells of nearby homes, the records show, but not at levels violating the drinking water standard. At a fourth site, in New Jersey, tritium has leaked into an aquifer and a discharge canal feeding picturesque Barnegat Bay off the Atlantic Ocean.
In this Tuesday, Dec. 14, 2010 photo, retiree Bob Scamen stands near a discharge pipe for the Braidwood Nuclear Power Station about 300 feet from his property, in Braidwood, Ill., 50 miles southwest of Chicago. In 1998 the pipe poured out 3 million gallons of water but, at first, Scamen did not realize it was radioactive. Radioactive tritium has leaked from three-quarters of U.S. commercial nuclear power sites, often into groundwater from corroded, buried piping, an Associated Press investigation shows. The number and severity of the leaks has been escalating, even as federal regulators extend the licenses of more and more reactors across the nation.Charles Rex Arbogast / AP
Previously, the AP reported that regulators and industry have weakened safety standards for decades to keep the nation’s commercial nuclear reactors operating within the rules. While NRC officials and plant operators argue that safety margins can be eased without peril, critics say these accommodations are inching the reactors closer to an accident.
Any exposure to radioactivity, no matter how slight, boosts cancer risk, according to the National Academy of Sciences. Federal regulators set a limit for how much tritium is allowed in drinking water. So far, federal and industry officials say, the tritium leaks pose no health threat.
But it’s hard to know how far some leaks have traveled into groundwater. Tritium moves through soil quickly, and when it is detected it often indicates the presence of more powerful radioactive isotopes that are often spilled at the same time.
For example, cesium-137 turned up with tritium at the Fort Calhoun nuclear unit near Omaha, Neb., in 2007. Strontium-90 was discovered with tritium two years earlier at the Indian Point nuclear power complex, where two reactors operate 25 miles north of New York City.
The tritium leaks also have spurred doubts among independent engineers about the reliability of emergency safety systems at the 104 nuclear reactors situated on the 65 sites. That’s partly because some of the leaky underground pipes carry water meant to cool a reactor in an emergency shutdown and to prevent a meltdown. More than a mile of piping, much of it encased in concrete, can lie beneath a reactor.
Tritium is relatively short-lived and penetrates the body weakly through the air compared to other radioactive contaminants. Each of the known releases has been less radioactive than a single X-ray.
The main health risk from tritium, though, would be in drinking water. The U.S. Environmental Protection Agency says tritium should measure no more than 20,000 picocuries per liter in drinking water. The agency estimates seven of 200,000 people who drink such water for decades would develop cancer.
Still, the NRC and industry consider the leaks a public relations problem, not a public health or accident threat, records and interviews show.
"The public health and safety impact of this is next to zero," said Tony Pietrangelo, chief nuclear officer of the industry’s Nuclear Energy Institute. "This is a public confidence issue."
Read the full article at: sfgate.com
Tritium - Wikipedia
Another Radioactive Spill in Lake Ontario - Poses No Harm. Really!!
Vermont Yankee nuclear plant continues monitoring groundwater for tritium
75 percent of nuke sites have leaked tritium
Japan Finally Admits TOTAL Meltdown at 3 Nuclear Reactors Within Hours of Earthquake...
Japan slammed as new leak found at stricken nuclear plant
Japan to Cover Damaged Nuclear Reactors with Giant Tents
Norwegian Institute for Air Research is Still Running Fukushima Radiation Monitoring Under the Name "Zardoz"
Who Will Take the Radioactive Rods from Fukushima?
Latest News from our Front Page
Recent Israeli Synagogue Attack, a Possible False Flag?
2014 11 21
Dear Friends - I woke up yesterday morning to see a newspaper lying on the kitchen table with the front page proclaiming that five people were slain in an Israeli synagogue after a so-called "Palestinian attack." Some members of the media said that four people were killed, others said five, so it seems like that there was some confusion (or ...
The Michael Brown Shooting, Race Baiting for Political Power and Militarization of the Police
2014 11 21
From Youtube: The evidence clearly shows that Officer Darren Wilson was justified in shooting Michael Brown, so why is this case being hyped by the mainstream media and the leftist political establishment?
Detekt: A New Malware Detection Tool That Can Expose Illegitimate State Surveillance
2014 11 21
Recent years have seen a boom in the adoption of surveillance technology by governments around the world, including spyware that provides its purchasers the unchecked ability to target remote Internet users’ computers, to read their personal emails, listen in on private audio calls, record keystrokes and passwords, and remotely activate their computer’s camera or microphone. EFF, together with Amnesty International, ...
New UK spy chief says tech giants aid terrorism, privacy not ‘absolute right’
2014 11 21
Robert Hannigan, the new head of GCHQ
The new head of Britain’s GCHQ, the UK equivalent of the NSA in the U.S., said he believes privacy is not an absolute right and that tech giants must open themselves up to intelligence agencies.
“GCHQ is happy to be part of a mature debate on privacy in the digital age,” Hannigan said. “But privacy ...
LOL: Atheist Feminist Pornographer Used as Moral Authority in T-shirt Row
2014 11 21
Dr. Matt Taylor was thrust into the headlines this last week, largely for his lead role in successfully landing a spacecraft on a comet 300 million miles from earth that travels at a speed of 85,000 mph. In short, Taylor and his colleagues pulled off one of the most amazing achievements in contemporary science and space exploration, and in a ...
|More News » |