Fukushima Daiichi Unit 2 Newly Erected Platform’s Enigma

A bird’s eye view of Units 1 and 2 from the hill

On December 15, 2016, the newly elected Kashiwazaki mayor, Mayor Masahiro Sakurai, who has called for a conditional restart of the Kashiwazaki-Kariwa nuclear power plant, one of the world’ largest nuclear plants, when he was elected mayor of this coastal city in Niigata Prefecture, northwestern Japan on Nov. 20, visited the Fukushima daiichi nuclear plant.

TEPCO, operator of the crippled Fukushima No. 1 nuclear plant, eager to restart reactors at the Kashiwazaki-Kariwa plant, invited him to tour the Fukushima Daiichi Nuclear plant, so as to show him that they fully control the situation there.

During the election campaign, Masahiro Sakurai said he would “approve a restart of the halted nuclear plant if safety is confirmed and certain conditions are fulfilled.”

One condition is the construction of a road that residents can use for evacuation in case of an emergency at the nuclear plant. Masahiro Sakurai also promised to start decommissioning older reactors at the plant.

Tepco made Mayor Sakurai visit the Fukushima Daiichi plant site, some of its buildings, its central control rooms 1 and 2, and the land side frozen by the impermeable ice wall.

On the same day, Tepco released 6 photos of Mayor Sakurai’s visit. One of the pictures was taken while Sakurai viewed Units 1 and 2 from the hill, it shows a new platform erected by Tepco around unit 2. This new platform with extensive stairwells and levels running the length of the building, might be part of some work to remove the refueling floor so as to replace it with a defueling building.

No information was yet provided by Tepco regarding that platform purpose.

Source : http://photo.tepco.co.jp/date/2016/201612-j/161215-01j.html

1.This Month

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Energy efficiency – theme for July 2019

Energy efficiency represents the single largest potential contributor to global emissions reduction, according to the International Energy Agency (IEA 2017). It should be a key part of the global energy strategy, for several reasons:

It could reduce global electric demand by more than 20 per cent, based on current rates in the U.S. power sector, while maintaining high levels of services such as heating and lighting.
It avoids the need for increased energy, capacity and grid services, making it the least expensive way to decarbonise at scale.
It can reduce carbon dioxide emissions by billions of tonnes.

A dramatic example of the power of energy efficiency is lighting. In 2017 the United States passed the milestone of 1 billion LED and CFL lights installed, avoiding 142 million tonnes a year of carbon dioxide emissions, at a cost of about $7 per ton of avoided carbon dioxide. In contrast, the cumulative installed capacity of rooftop solar reached 8,000 MW in 2017, saving 8 million tonnes a year of carbon dioxide, at a cost of $360 per ton. Lighting efficiency thus yielded almost 18 times the avoided carbon dioxide, at about 2 per cent the cost per ton of rooftop solar.

Google provides another example of the power of energy efficiency. Its data centers now use 50 per cent less energy than the average data center, according to the company. Google also developed an improved chip, the TPU, which performs 83 times better than standard CPUs. The new chip allowed Google to reduce power consumption at its data centers by a factor of 30—far exceeding the effect on Google’s carbon footprint of all of the company’s renewable energy purchases. ” – John Woolard, Eco Business, 10 June 2019

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