Top Ten Videos to watch

TV One At The 47th NAACP Image Awards
Donald Trump Holds Rally In Biloxi, Mississippi
Behind bars
47th NAACP Image Awards Presented By TV One - Press Room
A Man Operating A Tv Camera
Maurice White
March2Justice
'News One Now' With Roland Martin Taping
Bill Cosby
Activists In Los Angeles Gather To Burn Likenesses Of The Confederate Flag
Flint Firebirds V Windsor Spitfires
CBC Message To America: Rep. Conyers Addresses The Damage Inflicted On Our Communities By Poverty, Mass Incarceration And Lack Of Economic Development
Iowa Caucus Ted Cruz
NewsOne Now NAACP Image Awards Preview
Student sitting at a desk in a classroom
Slavery Stock image
The 16th Annual Wall Street Project Gala Fundraising Reception
Ava DuVernay
Roland Martin Blasts Stacey Dash For Comments About BET, Black Networks
President Obama Delivers State Of The Union Address At U.S. Capitol
Ava DuVernay
2016 North American International Auto Show
Democratic National Committee Presidential Primary Debate
88th Oscars Nominations Announcement
Democratic debate
Dream Speech
GOP Presidential Candidates Debate In Charleston
US President Barack Obama speaks on the
24593149
Leave a comment

BRACEVILLE, Ill. — 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.

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.”

submit to  reddit

Also On News One:

Sign up for our newsletter and never miss the hot stories