nuclear-news

The News That Matters about the Nuclear Industry Fukushima Chernobyl Mayak Three Mile Island Atomic Testing Radiation Isotope

Sr-90 density rose up 155 percent of the previous highest reading in the seaside of Reactor 2

Sr-90-density-rose-up-155-percent-of-the-previous-highest-reading-in-the-seaside-of-Reactor-2-sept 16 2015

From Tepco’s report released on 9/4/2015, the density of Strontium-90 increased to 155% of the previous highest reading in the seaside of Reactor 2.

It was measured in groundwater gathered to pump up. The sampling date was 8/3/2015, Sr-90 density was 2,800,000 Bq/m3. The previous highest reading was 1,800,000 Bq/m3, which was analyzed on 7/2/2015.

From the report of 9/15/2015 about the same area, the density of Mn-54, which has 310 days of a half-life, reached the highest reading of 680 Bq/m3 on 9/10/2015. 4 days later, it rose up to 970 Bq/m3 again.

http://www.tepco.co.jp/nu/fukushima-np/f1/smp/2015/images/2tb-east_15090401-j.pdf

http://www.tepco.co.jp/nu/fukushima-np/f1/smp/2015/images/2tb-east_15091501-j.pdf

Source: Fukushima Diary

Sr-90 density rose up 155 percent of the previous highest reading in the seaside of Reactor 2

September 18, 2015 Posted by | Japan | , , | Leave a comment

Kyushu Electric begins fueling second Sendai reactor

Kyushu Electric Power Co. said Friday it was loading fuel into the second reactor at its Sendai nuclear power plant, bringing it a step closer to a planned mid-October restart.

 

The No. 2 reactor at the two-unit plant will be the second nationwide to secure a restart since regulators imposed tighter safety requirements on the industry following the Fukushima nuclear crisis. Kyushu Electric reactivated the No. 1 unit at the complex on Aug. 11, which marked a revival of nuclear power generation in Japan after a two-year hiatus.

On Friday, the utility began inserting a total of 157 fuel rod assemblies into the No. 2 reactor — a process that is expected to take about four days to complete.

The government identifies nuclear power as a key electricity source. It is promoting the restarting of idled reactors even though anti-nuclear sentiment remains strong among the public.

However, the outlook for the resumption of other nuclear reactors remains uncertain due to hurdles such as the need for prolonged safety screenings by the regulator.

Kyushu Electric expects its earnings to improve by ¥15 billion a month when the two units are online, potentially putting it into the black this business year for the first time in five years.

Source: Japan Times

http://www.japantimes.co.jp/news/2015/09/11/national/kyushu-electric-begins-fueling-second-sendai-reactor/#.VfLTPpeFSM_

September 11, 2015 Posted by | Japan | , | Leave a comment

Robot probe into No.2 reactor may be delayed

The operator of the crippled Fukushima Daiichi nuclear plant says it may have to postpone plans to send a robot probe into the plant’s No.2 reactor due to difficult preparations.

Tokyo Electric Power Company was planning to send a robot into the containment vessel of the No.2 reactor in August. The purpose is to capture video images of molten nuclear fuel for the first time.

The utility assumes the fuel penetrated the reactor core and is inside the containment vessel.

The plan involved using a pipe sticking out of the container as an entry point for the robot. But some concrete blocks are blocking the way and need to be removed.

Workers found that the remote-controlled machinery they wanted to use to remove the blocks cannot operate in some areas of the reactor building due to an eroded floor and other reasons.

TEPCO says it is now considering using chemicals to clear the blocks or developing new machinery to remove the blocks.

Due to these reasons, the utility says the probe may be postponed from August until December or later, in the worst case. 

Source: NHK 

http://www3.nhk.or.jp/nhkworld/english/news/20150731_06.html

July 31, 2015 Posted by | Japan | , | Leave a comment

    Next Entries »