Chapter 440: Second Hand: Fukushima Nuclear Accident Report

Zhu Zi looked at the crowded streets of Akihabara, and a demonic smile appeared on the corner of his mouth. Pen, fun, and www.biquge.info

"We're just getting started, so let's be Louie next. ”

…………

Zhu Zi did not break his promise, and his second hand was aimed at TEPCO, which had been controlled by Louis.

In the midst of the earthquake, the Fukushima nuclear power plant was devastated.

But the most real situation was concealed, and what Zhu Zi had to do was to poke it all out.

On July 8, Zhu Zi published a report on the Fukushima nuclear power plant through the journal Nature.

On March 7, the CTBTO monitoring station in Takasaki City, 200 km away from the Fukushima nuclear power plant, was the first to detect radioactive materials. On the same day, the radioactive material had dispersed into eastern Russia, and two days later, it had flown across the Pacific Ocean to the west coast of the United States. By the fifteenth day, trace amounts of radioactive material could be detected throughout the Northern Hemisphere. On March 13, radioactive material was also detected at CTBTO stations in the southern hemisphere, such as Australia, Fiji, Malaysia and Papua New Guinea.

According to experts, the radioactive material released from the nuclear accident was about one-tenth that of the Chernobyl nuclear accident. The Ministry of Education, Culture, Sports, Science and Technology released a report in March of this year that radioactive fallout from the Fukushima nuclear power plant had dispersed about one-tenth of the distance from the accident at the Chernobyl nuclear power plant.

According to a study completed by the Norwegian Institute of Air Research, the total dose of cesium-137, which has a significant impact on human health, was about 40% of that of the Chernobyl nuclear accident.

Also in March, Japanese government officials announced that iodine-131 had been detected in 18 water purification plants in Tokyo and five other prefectures above the safe limit for babies. In June, the Japanese government was unable to control the prevention of radioactive materials from entering the country's foodstuffs, and radioactive contamination was detected in many foods within a 200-mile radius, including spinach, tea, milk, shrimp, and beef.

In July, the situation improved, cabbage, rice, beef, no significant radioactivity was detected. Tokyo's Consumer Safety certified and received a batch of rice produced in Fukushima.

In this report, a team of Japanese scientists from the Japan Nuclear Exploration Agency, Kyoto University, and other faculties published the results of a recalculation of the total amount of radioactive material discharged into the sea. From late March to April, the total was 15PBq of iodine-131 and cesium-137, three times TEPCO's estimate of 4.72PBq. TEPCO only counted the total amount discharged into the sea in April and May.

Since a large amount of radioactive material floating in the air will enter the sea in the form of rain, it must be recalculated.

In the first half of June, radioactive material released from the plant was estimated at 200 MBq per hour, about one-fourth of the radiation level at the beginning of the accident in March, according to TEPCO estimates.

From March 21 to mid-July, approximately 27PBq cesium-137 was released into the sea, with the majority (82%) being released before April 8. This is the largest amount of man-made radioactive material ever observed to be released into the ocean. The world's strongest ocean currents are surging off the coast of Fukushima, and sewage is being transported as far away as the Pacific Ocean, causing a large dispersal of radioactive materials. From the analysis of measurements of seawater and coastal sediments, scientists believe that the consequences of the nuclear accident were not serious until the end of June, with very low levels of radioactivity in seawater and limited radioactivity accumulation in sediments. But on the other hand, near nuclear power plants, along the coast, significant seawater contamination is likely to continue for some time, as surface water flows through the contaminated topsoil, transporting radioactive material into the sea. Some coastal areas may have poor dilution or sedimentary characteristics. Finally, there are some radioactive materials that may be present, such as strontium-90 or plutonium, which have not been carefully examined. Recent observations have shown that some of the seafood species caught off the coast of Fukushima, mostly fish, continue to be contaminated.

Over time, the organisms most susceptible to cesium contamination are filtered organisms and fish at the top of the food chain, so it is advisable to continue to monitor the seafood caught off the coast of Fukushima.

In July, TEPCO reported that at least 900PBq had been released into the atmosphere in March 2011. Researchers report that 10,000 residents living near the nuclear power plant are exposed to less than 1 millisievert, much less than the Chernobyl population. A radiation dose of 1 mSv is considered to be within safe limits.

On July 12, scientists analyzed data from Japan's Ministry of Agriculture, Forestry and Fisheries and concluded that the nuclear power plant was still leaking radioactive materials into the sea. Fishing should not be done in the vicinity, and the level of radioactive caesium radiation measured in the captured fish is still quite high, no lower than in the months following the accident. On July 16, TEPCO admitted that it could not rule out the possibility of a radiation leak entering the sea, although radiation levels had stabilized because the reactor basement was filled with cooling water. TEPCO is building a 2,400-foot-long, 100-foot-deep steel and concrete fence between the reactor and the sea, which is expected to be completed by mid-2014. On July 17, two six-line fish caught off the coast of Fukushima were measured to contain 25,000Bq caesium-137 per kilogram of fish weight, the highest cesium dose measured since the accident and 250 times the government's safe limit.

On the same day, the World Health Organization (WHO) reported that cancer rates in the general population are not expected to increase significantly, but that certain ethnic groups may experience higher cancer rates. For example, babies living in the town of Nanoe and the village of Restaurant received an effective dose of about 12 to 25 mSv in the first year after a nuclear accident. Therefore, the estimated probability of developing breast cancer and thyroid cancer increases by 6% and 70% respectively for a female baby, and 70% for a male baby. This is a relative incidence, not an absolute incidence. For example, because the baseline incidence of thyroid cancer is very low (~0.75%), although the incidence increases considerably, this is a relative value, characterizing only a very small increase in absolute incidence. In addition, one-third of emergency workers involved in a nuclear accident are more likely to develop cancer.

This report may seem a little jerky to ordinary people, but for Gaokeng and other countries, this report completely lifts the veil on the TEPCO accident.

The Fukushima nuclear power plant accident is only a few months away, and the more terrible consequences are yet to come.