Skip to main content

No Time To Ban Bananas

In yesterday's Milwaukee Journal-Sentinel, an editorial cautioned readers not to overreact to news of a leak of tritiated water at the Kewaunee nuclear power plant:
But while concern may be warranted, overconcern - and overreaction - would be a mistake. Company officials assert that the amount of tritium found in the water "is not a threat to anyone's health." And while those officials may have a bias, their assertion is backed up by federal officials who say that no unsafe levels of tritium have been detected outside the plant's boundaries. And they are backed up by the Manitowoc County Health Department, which reports that "we have seen no tritium" in any of the weekly tests of wells near the plant.

[...]

The EPA allows up to 20,000 picocuries per liter of tritium in drinking water. In one of four shafts measured beneath the Kewaunee reactor basement, tritium was measured at 103,000 picocuries per liter, according to the Nuclear Regulatory Commission. A Dominion spokesman put the health risk posed by the tritium found under the plant this way: "If you were to drink a cup of water that contained the highest level, that would be the same as the naturally occurring radiation you would receive by eating one banana."

And no one, as far as we know, is calling for a ban on bananas.
Technorati tags: , , , , , ,

Comments

Anonymous said…
According to the Journal of Chemical Education, vol81, No10, October 2004 - a large banana has about 511 picocuries of radiation. Thus one cup of the water would seem to contain the equivalent of nearly 50 bananas - by my calculation.
Anonymous said…
Please repeat your calculations with Sievert (mS). It is not the raw activity that counts when you try to compare internal exposure to radioactive elements (hint: Alpha, Beta, Gamma)

Popular posts from this blog

Activists' Claims Distort Facts about Advanced Reactor Design

Below is from our rapid response team . Yesterday, regional anti-nuclear organizations asked federal nuclear energy regulators to launch an investigation into what it claims are “newly identified flaws” in Westinghouse’s advanced reactor design, the AP1000. During a teleconference releasing a report on the subject, participants urged the Nuclear Regulatory Commission to suspend license reviews of proposed AP1000 reactors. In its news release, even the groups making these allegations provide conflicting information on its findings. In one instance, the groups cite “dozens of corrosion holes” at reactor vessels and in another says that eight holes have been documented. In all cases, there is another containment mechanism that would provide a barrier to radiation release. Below, we examine why these claims are unwarranted and why the AP1000 design certification process should continue as designated by the NRC. Myth: In the AP1000 reactor design, the gap between the shield bu...

How many nuclear plants does it take to meet the world's energy needs?

Several weeks ago Joshua Pearce at Clarion University in Pennsylvania released a study titled “ Thermodynamic limitations to nuclear energy deployment as a greenhouse gas mitigation technology .” In the study he stated... nuclear energy production would have to increase by 10.5% per year from 2010 to 2050 to both replace fossil-fuel-energy use and meet the future energy demands. This line, of course, made the headlines and has been picked up by several outlets and blogs . When looking into his calculations for this statement, he made one assumption error that overstated the above sentence by nearly a factor of three. Page 121, Section 4.1 of the study states: Richard Smalley pointed out that in 2004, the global economy consumed the equivalent of 220 million barrels of oil per day, which converted into electricity terms is the equivalent of 14.5 TeraWatts (TW), or 14,500,000 MegaWatts (MW) (2005). … With a nuclear plant having about 1000 MW (1 GW) of capacity, we would need 14,500...

What Happens During a Refueling Outage?

You may have noticed over the past few weeks that a number of nuclear plants are shut down for refueling outages or are resuming operations after just returning from one. This type of routine outage usually occurs in the spring or fall when electricity demand is low so that nuclear reactors can replace about one-third of the spent fuel rods with new fuel and conduct other routine maintenance and repairs at the plant. To get a better sense of how refueling works at a nuclear energy facility, I spoke with Marcus Nichol, NEI’s senior project manager for used fuel storage and transportation, and asked him to explain the basics. Why does a nuclear plant need to replace one-third of its fuel? Nichol: The main purpose of a refueling outage is to replace older fuel that is depleted—meaning it can no longer efficiently produce energy from nuclear fission reactions—with new fuel. This “used fuel” has typically been used in the reactor for four-and-a-half to six years before it is pe...