Plant Status of Fukushima Daini Nuclear Power Station (as of 13:00 pm March 15th)
No Latest Developments since 12:00
Plant Status of Fukushima Daini Nuclear Power Station (as of 13:00 pm March 15th)
Posted on 03/15/2011 2:57:21 PM PDT by 1010RD
Press Release (Mar 15,2011) Plant Status of Fukushima Daini Nuclear Power Station (as of 7:15 am Mar 15th)
At 7:15am, Mar 15th, Unit 4 achieved reactor cold shutdown. Accordingly, all the units in Fukushima Daini Nuclear Power Station have achieved reactor cold shutdown.
Unit 1 (shut down at 2:48pm on Mar 11th)
- Reactor is shut down and reactor water level is stable. - Offsite power is available.
- At 8:19am, Mar 12th, there was an alarm indicating that one of the control rods was not properly inserted, however, at 10:43am, Mar 12th the alarm was spontaneously called off.
Other control rods has been confirmed that they are fully inserted (reactor is in subcritical status)
- Status of main steam isolation valve: closed
- We do not believe there is leakage of reactor coolant in the containment vessel at this moment.
- At 5:22am, Mar 12th, the temperature of the suppression chamber exceeded 100 degrees. As the reactor pressure suppression function was lost, at 5:22am, Mar 12th, it was determined that a specific incident stipulated in article 15, clause 1 has occurred.
- We decided to prepare implementing measures to reduce the pressure of the reactor containment vessel (partial discharge of air containing radioactive materials) in order to fully secure safety. This preparation work started at around 9:43am, Mar 12th and finished at 6:30pm, Mar 12th.
- Restoration work in reactor cooling function that was conducted to achieve reactor cold shutdown has been completed and cooling of the reactor has been commenced at 1:24 am, Mar 14th.
- At 10:15am, Mar 14th, it has been confirmed that the average water temperature of the suppression chamber has continuously fell bellow 100 degrees.
- At present, the unit has achieved reactor cold shutdown.
Unit 2 (shut down at 2:48pm on Mar 11th)
- Reactor is shut down and reactor water level is stable.
- Offsite power is available.
- Control rods are fully inserted (reactor is in subcritical status)
- Status of main steam isolation valve: closed
- We do not believe there is leakage of reactor coolant in the containment vessel.
- At 5:32am, Mar 12th, the temperature of the suppression chamber exceeded 100 degrees. As the reactor pressure suppression function was lost, at 5:32am, Mar 12th, it was determined that a specific incident stipulated in article 15, clause 1 has occurred.
- We decided to prepare implementing measures to reduce the pressure of the reactor containment vessel (partial discharge of air containing radioactive materials) in order to fully secure safety. This preparation work started at around 10:33am, Mar 12th and finished at 10:58pm, Mar 12th.
- Restoration work in reactor cooling function that was conducted to achieve reactor cold shutdown has been completed and cooling of the reactor has been commenced at 7:13 am, Mar 14th.
- At 3:52pm, Mar 14th, it has been confirmed that the average water temperature of the suppression chamber has continuously fell bellow 100 degrees.
- At present, the unit has achieved reactor cold shutdown.
Unit 3 (shut down at 2:48pm on March 11th)
- Reactor is shut down and reactor water level is stable.
- Offsite power is available.
- Control rods are fully inserted (reactor is in subcritical status)
- Status of main steam isolation valve: closed
- We do not believe there is leakage of reactor coolant in the containment vessel.
- We decided to prepare implementing measures to reduce the pressure of the reactor containment vessel (partial discharge of air containing radioactive materials) in order to fully secure safety. The preparation woke started at around 12:08pm, Mar 12th and finished at 12:13pm, Mar 12th.
- At present, the unit has achieved reactor cold shutdown.
Unit 4 (shut down at 2:48pm on March 11th)
- Reactor is shut down and reactor water level is stable.
- Offsite power is available.
- At 0:43pm, Mar 13th, there was a signal indicating that one of the control rods may have not properly inserted. However, we confirmed that it was inserted completely by another signal. We will inspect the reason of this.
- Status of main steam isolation valve: closed
- We do not believe there is leakage of reactor coolant in the containment vessel.
- In order to cool down the reactor, injection of water into the reactor had been done by the Reactor Core Isolation Cooling System, however, At 6:07am, Mar 12th, the temperature of the suppression chamber exceeded 100 degrees. As the reactor pressure suppression function was lost, at 6:07am, Mar 12th, it was determined that a specific incident stipulated in article 15, clause 1 has occurred.
- We decided to prepare implementing measures to reduce the pressure of the reactor containment vessel (partial discharge of air containing radioactive materials) in order to fully secure safety. The preparation woke started at around 11:44am, Mar 12th and finished at around 11:52am, Mar 12th.
- Restoration work in reactor cooling function that was conducted to achieve reactor cold shutdown has been completed and cooling of the reactor has been commenced at 3:42 pm, Mar 14th.
- At 7:15pm, Mar 15th, it has been confirmed that the average water temperature of the suppression chamber has continuously fell bellow 100 degrees.
- At present, the unit has achieved reactor cold shutdown.
- At approximately 11:01am, Mar 14th, an explosion followed by white smoke occurred at the reactor building of Unit 3. It was believed to be a hydrogen explosion.
- There was an increase of radiation dose at site boundary measured at the monitoring post of Fukushima Daini Nuclear Power Station. Accordingly, at 10:07pm Mar 14th and at 12:35am Mar 15th, it was determined that that a specific incident stipulated in article 10, clause 1 (Increase of radiation dose at site boundary) has occurred.
- We will continue to monitor in detail the possibility of radioactive material being discharged from exhaust stack or discharge canal.
So are they saying the four reactors are now cold and completely shut down? If so why all the hysteria and gnashing of teeth by all the MSM?
So what is the official amount of time that it takes to properly shut down a reactor?
I read somewhere on-line that it was 1-week.
Can anyone verify this?
Just got this twitter breaking news message
BreakingNews
Japan says flames rising from reactor at Dai-Ichi nuclear plant - AP
Someone started a LIVE thread for all the updates from Japan so we could keep track of it in one place. You might want to post your update there:
“So are they saying the four reactors are now cold and completely shut down? If so why all the hysteria and gnashing of teeth by all the MSM?” Different power plant.
Correct . A bulletin just hit the TV in Japan re : Dai Ichi # 4 . Spokesman on now . Will go see what’s up .
Don’t believe a word of it! I went outside just for a minute and my willy fell off!
Never mind. I found it. It was under a hair.
I hope Earthquake didn’t cause any oil or gas leakage, not to say that nuclear accidents aren’t bad, but oil or gas leaks from the tremors certainly aren’t good either.
Fire at # 4 . Roof cracked .
Plant Status of Fukushima Daini Nuclear Power Station (as of 13:00 pm March 15th)
No Latest Developments since 12:00
Plant Status of Fukushima Daini Nuclear Power Station (as of 13:00 pm March 15th)
I believe that is what we had been calling reactor #2.
Press Release (Mar 15,2011)
Damage to the Unit 4 Nuclear Reactor Building at Fukushima Dai-ichi Nuclear Power Station
At approximately 6:00am, a loud explosion was heard from within the
power station. Afterwards, it was confirmed that the 4th floor rooftop
area of the Unit 4 Nuclear Reactor Building had sustained damage.
After usage, fuel is stored in a pool designated for spent fuel.
Plant conditions as well as potential outside radiation effects are
currently under investigation.
TEPCO, along with other involved organizations, is doing its best to
contain the situation. Simultaneously, the surrounding environment is
being kept under constant surveillance.
http://www.tepco.co.jp/en/press/corp-com/release/11031504-e.html
Good, but this is a report for Fukushima Daini. The plant with the current fire and three reactor buildings that exploded is Fukushima Daiichi. The names make it easy to confuse them.
Fukushima Dai-Ichi, or Fukushima One, is a six-unit nuclear power plant located in the town of Okuma in the Futaba district of Fukushima Prefecture in Japan.
7 miles to the south is Fukushima Dai-Ni or Fukushima Two, a four-unit nuclear power plant near the towns of Naraha and Tomioka in the same district and prefecture.
http://en.wikipedia.org/wiki/Fukushima_I_Nuclear_Power_Plant
http://en.wikipedia.org/wiki/Fukushima_II_Nuclear_Power_Plant
Right, Obama likely owns stock in a iodine manufacturing company.
A frightened people can be controlled. In this case this is for the anti-nuke crowd.
The true story, once told, will be of the amazing engineering and quick/effective reaction of the Japanese responders to this absolutely catastrophic event. Heroic is the only word for it.
There will be no lasting negative health effects from this event IMHO.
Thanks
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