Hang Zhou Dawn Air Conditioning Co .,Ltd.

For more information emerged regard to the regulatory authorities in Japan is a chain of events Fukushima Daiichi March 11 following a disastrous earthquake and tsunami.
Report from Tokyo Electric Power Co. and submitted to the Agency for Nuclear Safety on Monday showed that the participants have followed the procedures for use during the blackout of the station, but these procedures included in the temporary closure of the emergency cooling material.
time of the accident report, summarized in the Daily Yomiuri, showed that the plant loses its external power supply immediately after the earthquake at 2:46 pm, Japan time, but backup generators and reactor work automatically tripped.
In Unit 1 reactor isolation condenser cooling started 6 minutes later. Then, at 3:03 pm, workers at the mill went out of the isolation condenser coils, according to the manual of the reactor, because the base temperature decreased more rapidly at 55 ° C per hour. Workers returned to the isolation condenser when the tsunami hit the floor 15:30
Condenser, then shut down again, this time automatically when the tsunami destroyed the backup generators. System, presumably as a replacement battery to date, interpreted as the loss of power as the crack pipe and a closed set of valves, which have been manually condenser coils workers.
Units 2 and 3, General Electric BWR-4 design, unlike Unit 1 BWR-3, have been equipped with a reactor core isolation, instead of condenser coils insulation. These units also backup cooling arrested several times after losing power and was revived by the workers, the manual. In Unit 3, the insulation of the reactor core has stopped working at 11:36, 12 March. An hour later, the emergency system of high central pressure flooding has been enabled. At 2:42 am on March 13, the system stops for about 6.75 pm in the coolant was changed to fresh water containing boric acid.
In Unit 2, the insulation of the reactor core has stopped working at 13:25, 14 March.
TEPCO said earlier this week that it now considers the fuel in all three reactors was completely dissolved and accumulated in the bottom of the reactor pressure vessels.