edit: changed title from 'False Fukushima Fears' to 'Exaggerated Fukushima Fears', sacrificing my lovely alliteration as others have pointed out that it would be too much to say that the fears of radiation leakages are unfounded, but merely to say that this is the least bad option given previous precedent as cynesthesia has pointed out.

Image is of the large array of water storage tanks holding the tritium-contaminated water.

This week's preamble is very kindly provided by our beautiful poster @[email protected], with some light editing. In periods where not much of earth-shattering importance is happening in the news, I hope to do this more often!

In 2011, the Fukushima nuclear incident occurred. Since then, water has been used to cool radioactive waste and debris, which contaminates the water with radioactive isotopes. Currently, TEPCO, the Japanese energy company that is reponsible to Fukushima, is storing about 1.3 million m^3^ of contaminated water (equivalent to about 500 Olympic swimming pools for our American friends) in about 1000 tanks. Approximately 100,000 m3 of contaminated cooling water is generated per year to this day. TEPCO doesn't want to store escalating volumes of nuclear waste for decades until half-lives are spent. This would mean adding substantial storage capacity every year at increased cost and risk of tank spills.

The contaminated water includes heavier isotopes like caesium as well as hydrogen's isotope, tritum. Caesium is a big atom at 137 molar mass (we love our tremendous atoms, folks) while tritium is heavy hydrogen and has only a molar mass of 3 (pathetic, low energy). The TEPCO people are using water treatment to remove heavy isotopes from water, but not tritium. The large adult isotopes are easy to remove with treatment but tritium is incorporated into water, so it blends in with the others. The treated Fukushima water contains low levels of the big isotopes but still contains tritium.

Isotopes release radiation that damages the body's cells. The longer an individual molecule containing an isotope is in a body, the more likely it is that the isotope will go BRAZAP and release radiation that fucks up the cells. Bioaccumulation is a toxicology term for how certain contaminants can accumulate in the food cycle. For example, algae eat contaminants, then the algae is eaten by bugs, then bugs by fish, then fish by people. Isotopes that are bioaccumulative like our large adult son caesium are more hazardous. Tritium is not bioaccumulative because it is effectively part of water. Water cycles through bodies quickly - that's why you sweat and pee and get thirsty.

Fukushima water would be treated and then then mixed with seawater at a ratio of 1:800 before it is pumped 1km offshore. Each year approximately 166,000 m3 of treated water will be released, which will draw down the volume of contaminated water being stored over a few decades. Real-time stats associated with the release are found here. At the point of discharge, water contains about 207 Bq/L of radioactivity, about 16 times greater than the 10-15 Bq/L background level in the ocean overall. Drinking water guidelines for tritium radioactivity range from 1,000-10,000 Bq/L, if one were to drink seawater.

In wastewater treatment terms, this is a small amount of dilution in a very large body of water. It is unlikely to have any measurable impact per the terms of Western science. In the context of mother nature taking yet another one for the team and environmental distress, this sucks. In the context of making the best of a shitty situation, the Fukushima water release is peanuts compared to the many other environmental liabilities that are not addressed. For example, the Hanford Site is an example of a nuclear wastewater storage facility gone/going wrong in Oregon.

Ending note by 72: By far the biggest impact of the release of this water won't be its direct effects, but those on commerce and international relations. Almost half of Japanese aquatic exports go to China, comprising 8% of all Japanese firms shipping goods to China, and they have now been cut off due to their anger at Japan. Perhaps this reaction and the cancellation of imports was inevitable, as nuclear power and radiation in general is a poorly understood, frightening, and thus easily exploitable topic in every country. China is not the first country to use a misunderstanding of radiation risk to try and achieve a goal - Germany seems very pleased with itself - and they will not be the last.

In all: it is unequivocal that China is massively exaggerating the risks of this water's release. However, the bellicose rhetoric and actions of Japan, South Korea, and America are a much greater danger to the region, and none of the three seem to be in any hurry to try diplomacy instead of increasing military budgets and gearing up for war.

It's that time again - every two months I give myself a week off, to rest and recalibrate. Your regularly scheduled programming will resume next week.

Here is the map of the Ukraine conflict, courtesy of Wikipedia.