Japan Nuclear: Why is there irrational fear of radiation?

Friday, May 13, 2011

Why is there irrational fear of radiation?

Four perspectives on the need to change the way the significance of radiation numbers are explained to the public

The crisis at the Fukushima nuclear reactor complex in Japan (right), caused by a record earthquake and equally record shattering tsunami, has created a maelstrom of fear, uncertainty, and doubt (FUD) when it comes to radiation measurements.

At a private online discussion forum on nuclear energy, there has been considerable debate about the cause of FUD over radiation and what to do about irrational public fears over radiation.

I asked four members of the list to offer their perspectives on the issue. You can read their public comments now online at the ANS Nuclear Cafe. Here?s a preview.

It?s more complicated than just counting

For instance, the importance of distinctions between fast and slow decaying isotopes of iodine and cesium are sometimes lost on media and the public.

Worse, the differences between accounting for the sheer amount of radiation and giving an assessment of the potential health effects of uncontrolled releases takes place using different sets of measurement units. Is it any wonder that mainstream news media editors get headaches when their reporters file stories about radiation?

It hasn?t helped that Japanese and American nuclear experts have called for different distances for evacuation zones around the plant site. Can we fault the public for concluding that any report about radiation at a nuclear reactor is bad news?

Organizations with agendas that call for removing nuclear reactors from the energy mix have been known to exploit public fears of radiation. In doing so, they?ve sometimes failed to understand the scientific basis for the measurements.

Use of radiation statistics colored by perspective

In one case, a critic of a reactor relicensing application, writing in a political news magazine, said that a tritium release was 500 times more than expected, which was none. What he failed to realize is that the measured quantity was still 500 times less than the EPA drinking water standard.

Calling this type of mistake ?junk science? misses an important point. What the public thinks is that regardless of how much radiation you are talking about, it is colorless, odorless, and tasteless. FUD fosters fear.

On the other hand, people in the nuclear energy field, who routinely work with some of the most dangerous radioactive materials in the universe, are quite calm about it, citing and practicing the principles of time, distance, and shielding. In fact, some can?t understand what all the panic is about because they know, by the numbers, that the risk isn?t commensurate with the noise level.

What we have here is a failure to communicate

Is it time for a change in the way radiation measurements are communicated and explained to the public? At the discussion list, I asked four contributors to share their views on this question.

These four people have deep insights into the world of nuclear energy, but they also have very different takes on the current systems of radiation measurement and how they are used to explain risk to the public and the press.

In this multi-author guest blog post, an ecologist, a chemist, an energy expert, and a public affairs consultant offer ideas about what to do about making radiation numbers more understandable and, in doing so, foster better public understanding about what they mean.

All four contributors, coming at the problem from very different perspectives, nevertheless find fault with the way current radiation measurement systems explain their results. The fault finding is not with the internationally accepted scientific measurement units, but rather in communication of the numbers to a skeptical and fearful public.

Until risk communication practice by nuclear regulatory agencies catches up with the public?s needs for understanding, the nuclear industry may paradoxically continue to find itself sliced and diced in the news media by its own measurement precision.

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