スウエーデンの面白いものたち


by nyfiken
カレンダー
S M T W T F S
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経済産業省の福島原発報告書2

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・ Seawater was discharged 4 times to Unit 3 by the helicopters of the
Self-Defence Force. (9:48, 9:52, 9:58 and 10:01 March 17th)
・ The riot police arrived at the site for the water spray from the grand.
(16:10 March 17th)
・ The Self-Defence Force started the water spray using a fire engine.
(19:35 March 17th)
・ The water spray from the ground was carried out by the riot police.
(From 19:05 till 19:13 March 17th)
・ The water spray from the ground was carried out by the Self-Defense
Force using 5 fire engines. (19:35, 19:45, 19:53, 20:00 and 20:07 March
17th)
・ The water spray from the ground using 6 fire engines (6 tons of water
spray per engine) was carried out by the Self-Defence Force. (From
before 14:00 till 14:38 March 18th)
・ The water spray from the ground using a fire engine provided by the US
Military was carried out. (Finished at 14:45 March 18th)
・ Hyper Rescue Unit of Tokyo Fire Department carried out the water
spray. (Finished at 03:40 March 20th)
・ The pressure in PCV of Unit 3 rose (320 kPa as of 11:00 March 20th).
Preparation to lower the pressure was carried. Judging from the
situation, immediate pressure relief was not required. Monitoring the
pressure continues (120 kPa at 12:15 March 21st).
・ On-site survey for leading electric cable (From 11:00 till 16:00 March
20th)
・ Water spray over the Spent Fuel Pool of Unit 3 by Hyper Rescue Unit of
Tokyo Fire Department was carried out (From 21:30 March 20th till
03:58 March 21st).
・ Works for the recovery of external power supply is being carried out.
・ Grayish smoke generated from Unit 3. (At around 15:55 March 21st)
・ The smoke was confirmed to be died down. (17:55 March 21st)
・ Grayish smoke changed to be whitish and seems to be ceasing. (As of
07:11 March 22nd)
・ Water spray (Around 180t) by Hyper Rescue Unit of Tokyo Fire
Department was carried out. (from 15:10 till 15:59 March 22nd)
・ Lighting was recovered in the Central Operation Room. (22:43 March
22nd)
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・ Injection of 35t of seawater to the Spent Fuel Pool via the Fuel Pool
Cooling Line was carried out. (From 11:03 till 13:20 March 23rd)
・ Slightly blackish smoke generated from the reactor building. (Around
16:20 March 23rd) At around 23:30 March 23rd and around 4:50 March
24th, it was reported that the smoke seemed to cease.
・ Around 120t of seawater was injected to the Spent Fuel Pool via the
Fuel Pool Cooling Line. (From around 5:35 till around 16:05 March
24th)
・ As the results of the survey of the stagnant water, into which workers
who were laying electric cable on the ground floor and the basement
floor of the turbine building of the Unit 3 walked, the dose rate on the
water surface was around 400mSv/h, and as the result of gamma-ray
analysis of the sampling water, the totaled concentration of each
nuclide of the sampling water was around 3.9×106 Bq/cm3.
・ Water spray by Kawasaki City Fire Bureau supported by Tokyo Fire
Department was carried out. (From 13:28 till 16:00 March 25th)
・ Water spray of approximately 100t using Concrete Pump Truck (50t/h)
was carried out. (From 12:34 till 14:36 March 27th)
・ The pump for the fresh water injection to RPV was switched from the
Fire Pump Truck to the temporary motor-driven pump.(20:30 March
28th)
・ White smoke was confirmed to generate continuously (As of 06:30
March 29th)
・ Injection of fresh water to RPV is being carried out. (As of 08:00 March
29th)

・ Because of the replacement work of the Shroud of RPV, no fuel was
inside the RPV.
・ The temperature of water in the Spent Fuel Pool had increased. (84 ℃
at 04:08 March 14th)
・ It was confirmed that a part of wall in the operation area of Unit 4 was
damaged. (06:14 March 15th)
・ The fire at Unit 4 occurred. (09:38 March 15th) TEPCO reported that
the fire was extinguished spontaneously. (11:00 March 15th)
・ The fire occurred at Unit 4. (5:45 March 16th) TEPCO reported that no
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fire could be confirmed on the ground.(At around 06:15 March 16th)
・ The Self-Defence Force started water spray over the Spent Fuel Pool of
Unit 4 (09:43 March 20th).
・ On-site survey for leading electric cable (From 11:00 till 16:00 March
20th)
・ Water spray over the Spent Fuel Pool of Unit 4 by Self-Defence Force
was started. (From around 18:30 till 19:46 March 20th).
・ Water spray over the Spent Fuel Pool by Self-Defence Force using 13
fire engines was started (From 06:37 till 08:41 March 21st).
・ Works for laying electricity cable to the Power Center was completed.
(At around 15:00 March 21st)
・ Power Center received electricity. (10:35 March 22nd)
・ Spray of around 150t of water using Concrete Pump Truck (50t/h) was
carried out. (from 17:17 till 20:32 March 22nd)
・ Spray of around 130t of water using Concrete Pump Truck (50t/h) was
carried out. (From 10:00 till 13:02 March 23rd)
・ Spray of around 150t of water using Concrete Pump Truck (50t/h) was
carried out. (From 14:36 till 17:30 March 24th)
・ Spray of around 150t of water using Concrete Pump Truck (50t/h) was
carried out. (From 19:05 till 22:07 March 25th)
・ Injection of seawater to the Spent Fuel Pool via the Fuel Pool Cooling
Line was carried out. (From 06:05 till 10:20 March 25th)
・ Water spray of approximately 125t using Concrete Pump Truck (50t/h)
was carried out. (From 16:55 till 19:25 March 28th)
・ White smoke was confirmed to generate continuously. (As of 06:30
March 29th)

・ The first unit of Emergency Diesel Generator (B) for Unit 6 is operating
and supplying electricity. Water injection to RPV and the Spent Fuel
Pool through the system of Make up Water Condensate (MUWC) is
being carried out.
・ The second unit of Emergency Diesel Generator (A) for Unit 6 started
up. (04:22 March 19th)
・ The pumps for Residual Heat Removal (RHR) (C) for Unit 5 (05:00
March 19th) and RHR (B) for Unit 6 (22:14 March 19th) started up and
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recovered heat removal function. It cools Spent Fuel Pool with priority.
(Power supply : Emergency Diesel Generator for Unit 6) (05:00 March
19th)
・ Unit 5 under cold shut down (14:30 March 20th)
・ Unit 6 under cold shut down (19:27 March 20th)
・ Receiving electricity reached to the transformer of starter. (19:52 March
20th)
・ Power supply to Unit 5 was switched from the Emergency Diesel
Generator to external power supply. (11:36 March 21st)
・ Power supply to Unit 6 was switched from the Emergency Diesel
Generator to external power supply. (19:17 March 22nd)
・ The temporary pump for RHR Seawater System (RHRS) of Unit 5 was
automatically stopped when the power supply was switched from the
temporary to the permanent. (17:24 March 23rd)
・ Repair of the temporary pump for RHRS of Unit 5 was completed (16:14
March 24th) and cooling was started again. (16:35 March 24th)
・ Power supply for the temporary pump for RHRS of Unit 6 was switched
from the temporary to the permanent. (15:38 and 15:42 March 25th)

・ It was confirmed that the water level of Spent Fuel Pool was maintained
full at after 06:00 March 18th.
・ Water spray over the Common Spent Fuel Pool was started (From 10:37
till 15:30 March 21st)
・ The power was started to be supplied (15:37 March 24th) and cooling
was also started.(18:05 March 24th)
・ As of 08:00 March 28th, water temperature of the pool was around
34℃.


・ As the result of nuclide analysis at around the southern Water Discharge
Canal, 7.4×101Bq/cm3 of 131I (Iodine) (1,850.5 times higher than the
concentration limit in water outside the Environmental Monitoring
Area) was detected. (14:30 March 26th)
(As the result of measurement on 27 March, it was detected as 250
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times higher than the limit in water. On the other hand, as the result of
the analysis at the north side of the Water Discharge Canal of the NPS,
4.6×101Bq/cm3 of 131I (Iodine) (1,150 times higher than the limit) was
detected. (14:05 March 27th)
・The water was confirmed to be collected in the vertical parts of the
trenches (an underground structure for laying pipes, shaped like a
tunnel) outside of the turbine building of Units 1 to 3. The dose rates on
the water surface were 0.4 mSv/h of the Unit 1’s trench and 1,000 mSv/h
of the Unit 2’s trench. The rate of the Unit 3’s trench could not measure
because of the rubble. (Around 15:30 March 27th)
・In the samples of soil collected on 21 and 22 March 2011 on the site (at 5
points) of Fukushima Dai-ichi NPS, plutonium 238, 239 and 240 were
detected (23:45 March 28th announced by TEPCO). The concentration of
the detected plutonium was at the equivalent level of the fallout
(radioactive fallout) that was observed in Japan concerning the past
atmospheric nuclear testing, i.e. at the equivalent level of the normal
condition of environment, and was not at the level of having harmful
influence on human body.
 Fukushima Dai-ni NPS (TEPCO)
(Naraha Town / Tomioka Town, Futaba County, Fukushima Prefecture.)
(1) The state of operation
Unit1 (1,100MWe): automatic shutdown, cold shut down at 17:00,
March 14th
Unit2 (1,100MWe): automatic shutdown, cold shut down at 18:00,
March 14th
Unit3 (1,100MWe): automatic shutdown, cold shut down at 12:15,
March 12th
Unit4 (1,100MWe): automatic shutdown, cold shut down at 07:15,
March 15th
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(2) Major plant parameters (As of 06:00 March 29th)
Unit Unit 1 Unit 2 Unit 3 Unit 4
Reactor
Pressure*1 MPa 0.15 0.13 0.10 0.13
Reactor water
temperature ℃ 27.4 27.8 39.6 27.7
Reactor water
level*2 mm 9,296 10,296 7,826 8,785
Suppression
pool water
temperature
℃ 25 25 26 26
Suppression
pool pressure
kPa
(abs) 107 105 103 103
Remarks cold
shutdown
cold
shutdown
cold
shutdown
cold
shutdown
*1: Converted from reading value to absolute pressure
*2: Distance from the top of fuel
(3) Report concerning other incidents
・ TEPCO reported to NISA the event in accordance with the Article 10 of
the Act on Special Measures Concerning Nuclear Emergency
Preparedness regarding Unit 1. (18:08 March 11th)
・ TEPCO reported to NISA the events in accordance with the Article 10
regarding Units 1, 2 and 4. (18:33 March 11th)
・ TEPCO reported to NISA the event (Loss of pressure suppression
function) falling under the Article 15 of the Act on Special Measures
Concerning Nuclear Emergency Preparedness regarding Unit 1. (5:22
March 12th)
・ TEPCO reported to NISA the event (Loss of pressure suppression
function) falling under the Article 15 of the Act on Special Measures
Concerning Nuclear Emergency Preparedness regarding Unit 2. (5:32
March 12th)
・ TEPCO reported to NISA the event (Loss of pressure suppression
function) falling under the Article 15 of the Act on Special Measures
Concerning Nuclear Emergency Preparedness regarding Unit 4 of
Fukushima Dai-ni NPS. (6:07 March 12th)
by nyfiken | 2011-03-30 08:46