Solamon Energy Sources :Radiation from Fukushima results to mutated butterflies

A study by Japanese scientists could serve as a warning that exposure to radiation causes substantial harm to humans as butterflies have been found to suffer from mutations after the nuclear incident last year.

Japanese researchers have discovered butterflies species collected after the March 2011 nuclear disaster in Fukushima with irregularities in their wing shape, antennae and legs.

The connection between the radiation amounts and the mutations was determined through laboratory tests done by the team.

Just several months following the nuclear power plant crisis in Fukushima last year, a group Japanese experts gathered over 100 adult butterflies (Zizeeria maha).

It seemed like when the nuclear accident happened, adult butterflies have been on their larval stages. And through comparing mutations on butterflies obtained from other places in Japan, they discovered that butterfly specimens with considerably smaller wings and irregular eyes come from areas where there are high amounts of radiation present.

The lead scientist Otaki from the University of Ryukyus said, “It has been believed that insects are very resistant to radiation. In that sense, our results were unexpected.”

It was concluded that the increased rate of mutation resulted from ingesting contaminated food coupled with mutations of the genetic material passed from the parent to the next generation.

Professor Otaki added, “We had reported the real-time field evolution of colour patterns of this butterfly in response to global warming before, and [because] this butterfly is found in artificial environments – such as gardens and public parks – this butterfly can monitor human environments.”

Their findings agree with previous ones that showed how butterflies and other birds can be key indicators in probing the long-term effects of radioactive energy in the environment in general because of their sensitivity to changes.

The group has been conducting the study of that butterfly species for over a decade now.

 

Solamon Energy Sources : Japan had missteps in radiation problem

Japan’s current administration is reportedly prepared to restart nuclear reactors to support the massive energy expenditure of the nation even amidst massive public protests. And according to a new government-supported study regarding the Fukushima crisis, the “myth of nuclear safety” could be playing a part in this.

The 450-page study was compiled by various experts from the field of engineering, law, media and a group of scholars. It said the officials were not trained well enough to ha­ndle the crisis following the reactors’ meltdown last year.

“The fundamental problem lies in the fact that utilities, including TEPCO and the government, have failed to see the danger as reality as they were bound by a myth of nuclear safety and the notion that severe accidents do not happen at nuclear plants in our country,” the report said.

The report is the latest made into the worse nuclear disaster in modern times that happened after an unprecedented tsunami on March 2011 hit the Fukushima Daiichi nuclear power plant.

 

Also according to the report, TEPCO and NISA (Nuclear and Industrial Safety Agency were both unprepared to cope with severe accidents and weather conditions, and that the government itself has messed up the evacuation.

 

“Both the government and companies should establish a new philosophy of disaster prevention that requires safety and disaster measures against any massive accident and disaster … regardless of event probability,” according to the report.

The report also noted that even though NISA is under the economic ministry of the country, it was a “toothless entity” which could not come up to the public’s expectations. Now, the government is apparently trying to overhaul the agency in an attempt to make it more effective and independent.

A notable incident was when the workers at the Fukushima No. 1 nuclear power plant were instructed to cover their dosimeters with lead plates in order to cheat radiation measurements and continue working even under hazardous conditions. There were some of the employees who questioned their safety and refused to comply but a senior official of the TEPCO’s subcontractor responsible for the work has threatened that they would lose any chance of employment if they don’t follow.

 

The dosimeter is pocket-sized device used to measure a person’s exposure to radiation and will give an alarm once it detects a high level. For instance, an individual who has been measure to be exposed to have an accumulated dose of 50 millisieverts in one year will be required to stop working and keep away from the high-radiation area for a specific amount of time.

 

On December 1, the foreman has allegedly directed his team to cover their dosimeters with lead plates but when three of the employees have refused to comply, he held a meeting with them the next day.

“Everybody who works for nuclear plants know that the limit is 50 millisieverts per year. If you get exposed to a lot of radiation, you will reach that limit in less than a year. It could run out in three or four months. You can’t live by nuclear plants around the year unless you take care of your own radiation doses. You simply can’t go and work somewhere else when you are not allowed to work for nuclear plants. You can no longer make a living when the dose runs out. Do you understand that? The 50 millisieverts just keeps running out,” said the foreman on the recording.

 

Solamon Energy Sources :NRC poise to license new nuclear reactors

The Nuclear Regulatory Commission of the US plans to approve licenses this Thursday for the building of 2 nuclear reactors — the first in more than 3 decades.

The reactors are currently being constructed in Georgia by a group of utility companies led by Southern Company. They will be housed in the Vogtle nuclear powerplant complex, 170 miles east of Atlanta.

The consortium of utilities teaming up to build the new reactors in Vogtle submitted their application in 2005 and preparatory work has been underway for a time. However, the actual reactors cannot be constructed until NRC issues the license.

The said new nuclear reactors, AP 1000, are designed by Westinghouse. Southern said that the combined cost will be USD 14 billion for generating 2,200 MW of electricity — enough to power a million households.

According to Southern Co., one of the reactors is set to come online in 2016 while the second one is to follow on 2017.

The Ap 1000 is the most recent nuclear reactor that was approved by the NRC. According to Westinghouse, this would be the first of its kind in the US, but in China, there are already 4 under construction.

Critics of the move have noted that containment walls of the AP1000 are not strong to weather a terrorist attack but Westinghouse countered that the walls were redone after the 9/11 attack and have proved strong enough during several simulations.

However, some of the regional environmental groups are still saying that the present design is not that safe. They are pleading with the NRC to postpone their Thursday decision until such time that they can file a challenge in court.

Southern is attempting to obtain permission to create two 1,100 MW reactors at Plant Vogtle, in addition to the 2 that are already generating electricity there since the 80′s.

More strict regulation, increased construction expenses and high rates of interest are factors that made it difficult for the industry to keep operating during that time.

Since 1978, nuclear regulators have not yet permitted the creation of a new reactor due to the partial meltdown in Pennsylvania.

In the previous 5 years, around 30 reactors were proposed to be built but more than half of them have been pulled back due to several factors including lower energy demand, lack of funding and an apprehension for adding safety regulations. Besides, there are still no long-term plan on how to handle nuclear waste.