WATCH THE MOMENT OF THE EXPLOSION

Last night I was writing how we all hope everything goes well for Japan. But unfortunately the Fukishima’s power plant had an explosion and many employees as it has been said have been hurt or died.

Daiichi unit 1 in the crane operating console of the exhaust stack and is now confirmed to have died. Four workers were injured by the explosion at the same reactor and have been taken to hospital. A contractor was found unconscious and taken to hospital. Two workers of a ‘cooperative firm’ were injured, said Tepco; one with a broken bone. At Fukushima Daiini unit 3 one worker received a radiation dose of 106 mSv. This is comparable to levels deemed acceptable in emergency situations by some national nuclear safety regulators. The whereabout of two Tepco workers remains unkonwn. 

One of the four buildings of the station has been shattered while the roof and walls of one of the power plants (No1) has been shattered as well.

The cause of the explosion is still unknown. The scientists say that at least the core of the power plant is still ok, but fears of a meltdown (like Chernobyl in Ukraine,1986) are of course even more strong than ever.

Monitoring of Fukushima Daiichi 1 had previously shown an increase in radiation levels detected emerging from the plant via routes such as the exhaust stack and the discharge canal. Tepco have said that the amount of radioactive material such as iodine it is detecting have been increasing. The amount of radiation at the site boundary now exceeds a regulatory limit triggering another set of emergency precautions. It also meant the incident has been rated at Level 4 on the International Nuclear Event Scale (INES) – an ‘accident with local consequences’.
To protect the public from potential health effects of radioactive isotopes of iodine that could potentially be released, authorities are preparing to distribute tablets of non-radioactive potassium-iodide. This is quickly taken up by the body and its presence prevents the take-up of iodine should people be exposed to it.Over the last several hours evacuation orders for local residents have been incrementally increased and now cover people living within 20 kilometres of the power plant. 

Tepco team is trying to ‘calm down’ the station by using sea water. The past few hours though there was another tsunami warning and so they had to stop temporarily.

Raised temperatures

Meanwhile at adjacent Fukushima Daini, where four reactors have been shut down safely since the earthquake hit, Tepco has notified government of another emergency status. Unit 1’s reactor core isolation cooling system had been operating normally, and this was later supplemented by a separate make-up water condensate system. However, the latter was lost at 5.32am local time when its suppression chamber reached 100ºC. This led Tepco to notify government of another technical emergency situation. Tepco has announced it has decided to prepare for controlled releases to ease pressure in the containments of all four units at Fukushima Daini. A three kilometre evacuation is in progress, with residents in a zone out to ten kilometres given notice of potential expansion.

YOU CAN WATCH THE SCENE THROUGH A WEBCAM SET AT THE SITE OF THE FUKISHIMA AREA STATION–IT IS UPDATED HOURLY (best use it during the daytime hours in Japan )

CLICK HERE FOR THE WEBCAM VIEW

Sources:

World Nuclear News