Quantcast
Home manage Las Vegas Review-Journal
  Jobs Cars Homes Shopping Travel Weddings Golf Best of Las Vegas Photo   Search:

RECENT EDITIONS
Mon Tue Wed Thu Fri Sat Sun

sponsored by
News


Substance from nuclear blasts outside test site

Radioactive tritium in well two miles from detonations had been predicted

Scientists have found the first radioactive tritium from nuclear weapons tests in a monitoring outside the Nevada Test Site's boundary.

The levels, reported Tuesday by the National Nuclear Security Administration, were within safe drinking water guidelines. The relatively short-lived isotope had migrated two miles through groundwater layers in 35 years to reach the boundary.


Most Popular Stories
  • Three suspects arrested in shooting death of police officer
  • Three suspects arrested in shooting death of police officer
  • FATAL SHOOTING: Police again mourn comrade
  • NORM: Biden finds rank has its privileges
  • Corrections officer dies in collision on U.S. 95
  • Two suspects in officer's slaying could face death penalty
  • Two of three suspects in slaying of officer could face death penalty
  • NORM: Walton: Coach deserved a punch
  • DEADLY HOME INVASION: Police suspect link to family
  • Station Casinos posts $455 million third-quarter loss
  • NORM: 'Girls Gone Wild' creator feels heat




  • Sample results were verified by an independent laboratory and reported to state environmental officials, NNSA officials said in a news release.

    Scientists believe it will take and estimated 240 years for the tritium-laced water to travel another 14 miles to the nearest public water source. By that time it will have decayed to non-detectable limits, said Darwin Morgan, a spokesman for the NNSA's Nevada Site Office.

    "The big thing to us is it shows the models are accurate and gives us higher confidence in our ability to understand what is going on with deep groundwater," he said Wednesday.

    Scientists said in July they probably would find tritium after completion of Well EC-11 near the northwest edge of the test site. Underground tests Benham and Tybo were detonated in Pahute Mesa, two miles from that location in 1968 and 1975, respectively.

    Computer models of tritium migration predicted groundwater laced with it would travel beyond the test site within 50 years of the first detonation in Pahute Mesa, which occurred in 1966.

    The NNSA, a branch of the Department of Energy, plans to drill six additional wells in or near Pahute Mesa in the next few years. The average depth of those wells will be 3,500 feet. They will cost about $5 million apiece.

    Although tritium is an indicator of the radioactive remnants from powerful nuclear explosions, questions remain about how fast longer-lived isotopes such as plutonium are traveling. It's likely they are migrating at a much slower pace, Morgan said.

    Nevertheless, he said, "We still have to understand if those longer-lived products are moving and, if so, how far are they moving."

    In July, the director of the federal agency drilling campaign, Bill Wilborn, said the contamination probably won't reach Beatty, 120 miles northwest of Las Vegas. Instead, perhaps hundreds or 1,000 years from now, it will head between Beatty and Yucca Mountain, where the Department of Energy had planned to dispose of the nation's spent nuclear fuel. The Obama administration has declared the site not an option for building a repository.

    Contact reporter Keith Rogers at krogers@reviewjournal.com or 702-383-0308.

    Newsvine Digg Fark Technorati reddit StumbleUpon del.icio.us Slashdot Propeller Mixx Furl Twitter MySpace Facebook Google Bookmarks Yahoo! Bookmarks Windows Live Favorites Ask MyStuff myAOL Favorites

    Leave Your Comment 13 Reader Comments
    Terms & Conditions
    The following comments are provided by readers and are the sole responsiblity of the authors. The reviewjournal.com does not review comments before publication nor guarantee their accuracy. By publishing a comment here you agree to abide by the comment policy. If you see a comment that violates the policy, please notify the web editor.

    Some comments may not display immediately due to an automatic filter. These comments will be reviewed within 48 hours. Please do not submit a comment more than once.
    Current Word Count:

    Note: Comments made by reporters and editors of the Las Vegas Review-Journal are presented with a yellow background.

    Too_many_H-Bombs wrote on October 23, 2009 06:48 AM: Mad wrote (1624): Seems like if the tritium has reached the test wells, so has the plutonium, which will be able to travel all over the water table during is lifetime

    I had the same thought.


    Dem Fault wrote on October 22, 2009 08:15 PM: @Ugly American,
    You can thank President Carter for signing the bill banning nuclear fuel recycling in the U.S. Otherwise, there'd be one hell of a lot less waste needing to be stored.


    Mama Bear wrote on October 22, 2009 05:43 PM: They can go by any name (NNSA's Nevada Site Office) but they are still DOE, and the same people are still doing the dirty on Nevadans, just like Mr. Morgan who has been their talking head for decades.


    Mama Bear wrote on October 22, 2009 05:41 PM: ANYTHING associated with DOE and their projects means the ultimate in toxicity. Whether it is their words OR deeds.
    DOE = DEATH


    Mad Scientist wrote on October 22, 2009 04:24 PM: "Although tritium is an indicator of the radioactive remnants from powerful nuclear explosions, questions remain about how fast longer-lived isotopes such as plutonium are traveling. It's likely they are migrating at a much slower pace", Morgan said.

    And just what is going to slow down the longer lived isotopes? What is there, a plutonium gate that only allows tritium to pass? Seems to me that the longer lived isotopes are traveling right along at the same pace as the slower lived ones.

    Tritium half life is about 12.3 years. Pu-239 has a half life of 24,200 years.
    Since it has been only 34 years since the last test, there is still a pretty good quantity (6%) of Tritium, and, within a few thousand decimal places, all of the plutonium. Seems like if the tritium has reached the test wells, so has the plutonium, which will be able to travel all over the water table during is lifetime.


    Mike K. wrote on October 22, 2009 03:45 PM: Ugly American:

    The reactors that you mentioned in France and Canada are actually prohibited by federal law here in the United States. The environmentalists here in the US got them banned in the 1970's in an effort to stop the building of new nuclear reactors, which are much better than coal or gas fired plants.


    Ugly American wrote on October 22, 2009 02:43 PM: Tritium (radioactive hydrogen) disperses quickly, emits relatively low energy radiation and has a half life of only 12.33 years. The problem is where tritium is found, much more dangerous and toxic compounds usually follow.

    @Holly - In addition to the French reprocessing system, there are also breeder reactors and flex fuel reactors that can burn the waste from traditional reactors. Canada has been producing reactors that can burn high level waste for decades but US government contractors want to make money off stupid make-work never ending projects like Yucca.

    http://en.wikipedia.org/wiki/Candu


    Claudia H wrote on October 22, 2009 02:25 PM: 'Safe levels in the drinking water'... WHAT THE?! Mind if I piss some 'Safe levels of urine' in YOUR drinking water?!?!
    Who determines this GARBAGE and what kind of mind altering substance are they on in order to come to their conclusions?!?!


    Holly wrote on October 22, 2009 12:12 PM: The title to this article is misleading and inflammatory. Probably good journalism as it certainly drew me to the article. An interesting side note. The whole Yucca mountain debate could have been avoided if our country would let us recycle our waste. I found out that we would have more power to rely on plus only a fraction of the waste we currently have and it can all be safely and cheaply done. Makes you wonder why our great (in their own eyes) and non- esteemed leaders haven't thought of that. Too busy giving themselves raises.


    Too_many_H-Bombs wrote on October 22, 2009 12:01 PM: Tritium (H³) is used in H-Bombs, I think because it ignites at lower temperature. FYI.


    Read All Comments