Experts: No radiation worry for West Coast
Thursday, March 17, 2011; 9:42 PM
LOS ANGELES -- The U.S. government and scientists insist that there's no threat of radiation from Japan endangering people on the West Coast - but that hasn't stopped roughly 1,000 worried Californians from flooding a state hotline.
"Radiation is one of those words that get everybody scared, like `plague,'" said Dr. Jonathan Fielding, director of public health for Los Angeles County. "But we're 5,000 miles away."
Some computer models tracking the possible path of radioactive material from the stricken Japan nuclear reactors suggest it could cross the Pacific, swipe the Aleutian Islands and reach Southern California as early as Friday.
Even if particles waft to the U.S. coast, the amount will be so diluted that it will not pose any health risk. Wind, rain and salt spray will help clean the air over the vast ocean between Japan and the United States.
Nuclear experts say the main elements released are radioactive cesium and iodine. They can combine with the salt in sea water to become cesium chloride and sodium iodide, which are common and abundant elements and would readily dilute in the wide expanse of the Pacific, according to Steven Reese, director of the Radiation Center at Oregon State.
"It is certainly not a threat in terms of human health" added William H. Miller, a professor of nuclear engineering at the University of Missouri.
Earlier this week, the U.S. Environmental Protection Agency deployed extra radiation detectors throughout the country to allay public concerns. On Thursday, President Barack Obama said "harmful levels" of radiation from the damaged Japanese nuclear plant are not expected to reach the U.S.
The radiation stations will send real time data via satellite to EPA officials, who will make the data available to the public online. The monitors also contain two types of air filters that detect any radioactive particles and are mailed to EPA's data center in Alabama.
That information, as well as samples that numerous federal agencies are collecting on the ground and in the air in Japan, also will be sent to the Department of Energy's atmospheric radioactivity monitoring center in California, where teams are creating sophisticated computer models to predict how radioactive releases at Fukushima could spread into the atmosphere.
Inside Lawrence Livermore National Laboratory near San Francisco, scientists, engineers, and meteorological experts were analyzing those charts and maps to help policymakers predict where radioactive isotopes could travel.
"The models show what happens if the situation gets worse, if the winds change, or if it rains to predict what could happen," National Nuclear Security Administration spokesman Damien LaVera said. "The Nuclear Regulatory Commission has said they see no radiation at harmful levels reaching the United States, and we're not seeing anything that is inconsistent with that."
An arm of the United Nations earlier this week made a forecast of the possible trajectory of the radioactive fallout from Japan. The forecast only showed how it might move, but does not have information about radiation levels.