Folks,
NHK World reports that radiation levels at Fukushima Daiichi have dropped to 289 microsieverts (which is 28.9 millirem or 0.0289 rem).
Radiation levels lowered after water injection
Normal annual background exposure for human beings is 2400 microsieverts and a chest radiograph is 60000 microsieverts. In some areas of the world people are exposed to even higher levels in a yearly basis. One of those is Ramsar, Iran where annual dose can reach 260000 microsieverts. Dissolved radon-226 in the water of hot springs as well as local deposits of thorium and uranium are the cause.
Japan's
Nuclear and Industrial Safety Agency reports that some electrical power has been restored at Fukushima Daiichi (apparently by means of local diesel generators):
Seismic Damage Information (the 28th Release) (As of 17:30 March 17th, 2011)
Additionally, Kyoto News reports that efforts to pour water in the spent fuel pool at Unit 3 appear successful:
Operation to pour water at Fukushima nuke plant said effective
TEPCO provides the following status with time measured locally to Japan; I have not yet seen any fatalities as a direct result of these events, but perhaps I have missed something. In the meantime, tens if not hundreds of thousands of fatalies due as a direct result of the earthquake and tsunami, with subsequence explosions of natural gas and oil tanks, dam ruptures that flood away towns and villages wholesale, and continuing anguish and suffering due to non-nuclear related concerns such as lack of food, water, shelter, etc., continue to go under-reported if not unreported.
Press Release (Mar 17,2011)
Plant Status of Fukushima Daiichi Nuclear Power Station (as of 11:00 PM Mar 17th)
*new items are underlined
All 6 units of Fukushima Daiichi Nuclear Power Station have been shut down.
Unit 1(Shut down)
- Reactor has been shut down. However, the explosive sound and white smoke were confirmed after the big quake occurred at 3:36PM Mar 12th. It was assumed to be hydrogen explosion.
- We have been injecting sea water into the reactor pressure vessel.
Unit 2(Shut down)
- Reactor has been shut down and Reactor Core Isolation Cooling System has been injecting water to the reactor. However, the level of reactor coolant had dropped and the reactor pressure had increased because
the system stopped. The national government instructed that measures are taken to lower the pressure within the Reactor Containment Vessel and to inject sea water into the Reactor while carefully confirming safety.
The level of reactor coolant and the pressure of the Reactor had resumed.
- At approximately 6:00AM on March 15, 2011, an abnormal noise began emanating from nearby Pressure Suppression Chamber and the pressure within this chamber decreased.
- While we continue sea water injection operations, we temporarily moved TEPCO employees and workers from other companies not directly involved in this work to safe places.
Unit 3(Shut down)
- Reactor has been shut down. However, the explosive sound and white smoke were confirmed at 11:01AM Mar 14th. It was assumed to be hydrogen explosion.
- Fog like steam was confirmed from the reactor building at 8:30AM on March 16th,
- We continue monitoring as it was reported that the pressure of the Suppression Chamber has been temporarily increasing since approximately 6:15AM on March 17th.
- We have been injecting sea water into the reactor pressure vessel.
Unit 4 (outage due to regular inspection)
- Reactor has been shut down. However, at approximately 6AM on March 15th. We have confirmed the explosive sound and the sustained damage around the 5th floor rooftop area of the Nuclear Reactor Building.
- On March 15th and 16th, we respectively confirmed the outbreak of fire at the 4th floor of the northwestern part of the Nuclear Reactor Building. We immediately reported this matter to the fire department and the related authorities. TEPCO employees confirmed that each fire had already died down by itself. We will continue to carefully monitor situations.
- Currently, we do not consider any reactor coolant leakage inside the reactor containment vessel.
Unit 5 (outage due to regular inspection)
- Reactor has been shut down and the sufficient level of reactor coolant to ensure safety is maintained.
- Currently, we do not consider any reactor coolant leakage inside the reactor containment vessel.
Unit 6 (outage due to regular inspection)
- Reactor has been shut down and the sufficient level of reactor coolant to ensure safety is maintained.
- Currently, we do not consider any reactor coolant leakage inside the reactor containment vessel.
Cooling spent fuel pools
•On Unit 3, water discharge by Self-Defense Force's helicopters had been conducted since 9:48 AM in the morning on March 17th.
•On Unit 3, water discharge by the riot police's high-pressure water cannon trucks and Self-Defense Force's fire engines had been conducted since approximately past 7PM on March 17th and they had finished water
discharge at 8:09PM.
•We are considering further water discharge at Unit 3 and others subject to the conditions of spent fuel pools when we get ready.
Casualty
- 2 workers of cooperative firm were injured at the occurrence of the earthquake, and were transported to the hospital.
- 1 TEPCO employee who was not able to stand by his own holding left chest with his hand, was transported to the hospital by an ambulance.
- 1 subcontract worker at the key earthquake-proof building was unconscious and transported to the hospital by an ambulance.
- The radiation exposure of 1 TEPCO employee, who was working inside the reactor building, exceeded 100mSv and he was transported to the hospital.
- 2 TEPCO employees felt bad during their operation in the central control rooms of Unit 1 and 2 while wearing full masks, and were transferred to Fukushima Daini Power Station for consultation with a medical advisor.
- 4 workers were injured and transported to the hospital after explosive sound and white smoke were confirmed around the Unit 1.
- 11 workers were injured and transported to Fukushima Daini Nuclear Power Station etc. after explosive sound and white smoke were confirmed around the Unit 3. One of the workers was transported to the FUKUSHIMA Medical University Hospital at 10:56AM
- Presence of 2 TEPCO employees at the site is not confirmed.
Others
- We measured radioactive materials (iodine etc.) inside of the nuclear power station area (outdoor) by monitoring car and confirmed that radioactive materials level is getting higher than ordinary level. As listed below, we have determined that specific incidents stipulated in article 15, clause 1 of Act on Special Measures Concerning Nuclear Emergency Preparedness (Abnormal increase in radiation dose measured at site boundary) have occurred.
•Determined at 4:17 PM Mar 12th (Around Monitoring Post 4 )
•Determined at 8:56 AM Mar 13th (Around Monitoring Post 4 )
•Determined at 2:15 PM Mar 13th (Around Monitoring Post 4 )
•Determined at 3:50 AM Mar 14th (Around Monitoring Post 6 )
•Determined at 4:15 AM Mar 14th (Around Monitoring Post 2 )
•Determined at 9:27 AM Mar 14th (Around Monitoring Post 3 )
•Determined at 9:37 PM Mar 14th (Around main entrance )
•Determined at 6:51 AM Mar 15th (Around main entrance )
•Determined at 8:11 AM Mar 15th (Around main entrance )
•Determined at 4:17 PM Mar 15th (Around main entrance )
•Determined at 11:05 PM Mar 15th (Around main entrance )
- The national government has instructed evacuation for those local residents within 20km radius of the periphery and evacuation to inside for those residents from 20km to 30km radius of the periphery, because it's possible that radioactive materials are discharged.
- At approximately 10AM on March 15, we observed 400mSv/h at the inland side of the Unit 3 reactor building and 100mSv/h at the inland side of the Unit 4 reactor building.
- We will continue to take all measures to ensure the safety and to continue monitoring the surrounding environment aroud the Power Station.