Disastro in Giappone,polemiche sul nucleare ma un aiuto concreto?

[Antonio]

Un pensiero per i caduti e un abbraccio virtuale a chi soffre e soffrirà per questa immane tragedia.

[Szymon]

Si ma la domanda e' sono spente in misura preventiva o continuano a operare?

http://www.tepco.co.jp/en/press/corp-com...222-e.html

[Phreno]

non so perche ma non mi va il link, anche prima non caricava.

[Szymon]

Perché è sovraccarico!
Son tutti li a guardare cosa succede!
Pure quell'altro da me postato è sovraccarico.

[Phreno]

Press Release (Mar 12,2011)
Impact to TEPCO's Facilities due to Miyagiken-Oki Earthquake (as of 3PM)


Below is major impact to TEPCO's facilities due to the Miyagiken-Oki
Earthquake that occurred yesterday at 2:46PM.
*new items are underlined

[Nuclear Power Station]
Fukushima Daiichi Nuclear Power Station:
Units 1 to 3: shutdown due to earthquake
Units 4 to 6: outage due to regular inspection
* The national government has instructed evacuation for those local
residents within 10km radius of the periphery.
* Measurement of radioactive material (Iodine, etc.) by monitoring car
indicates increasing value compared to normal level. One of the
monitoring posts is also indicating higher than normal level. We will
continue monitoring discharge of radioactive material from exhaust stack
and discharge canal, etc.
* Reactor of Unit 1 has been shut down and steam in reactor has been
cooled by isolation condenser, but it is now stopped. Because pressure
level in reactor containment vessel is increasing, following the national
government instruction, we have done the measure to reduce the pressure of
the reactor containment vessels in order to fully secure safety and we
understand that we have succeeded it at 2:30PM.
At present, reactor water level is becoming lower and we are injecting
water accordingly.
* Reactor of Unit 2 has been shut down and we continue injecting water by
Reactor Core Isolation Cooling System. Current reactor water level is
lower than normal level, but the water level is steady. Following the
national government instruction, we are preparing to implement a measure
to reduce the pressure of the reactor containment vessels in order to
fully secure safety.
* Reactor of Unit 3 has been shut down and we continue injecting water by
Reactor Core Isolation Cooling System. Following the national government
instruction, we are preparing to implement a measure to reduce the
pressure of the reactor containment vessels in order to fully secure
safety.
* We are implementing a measure to reduce the pressure of the reactor
containment vessels, but, one of our employees working in the Unit 1 was
irradiated at over 100mSv level(106.3mSv). He received a medical treatment
by a special physician.

Fukushima Daini Nuclear Power Station:
Units 1 to 4: shutdown due to earthquake
* The national government has instructed evacuation for those local
residents within 3km radius of the periphery and indoor standby for those
local residents between 3km and 10km radius of the periphery.
* At present, we have 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.
These measures are considered to be implemented in Units 1, 2 and 3 and
accordingly, we have reported and/or noticed the government agencies
concerned.
* Unit 3 has been stopped and being "nuclear reactor cooling hot stop" at
12:15PM.

Kashiwazaki Kariwa Nuclear Power Station:
Units 1, 5, 6, 7: normal operation
Units 2 to 4: outage due to regular inspection

[Thermal Power Station]
Hirono Thermal Power Station Units 2 and 4: shutdown due to earthquake
Hitachinaka Thermal Power Station Unit 1: shutdown due to earthquake
Kashima Thermal Power Station Units 2, 3, 5, 6: shutdown due to earthquake
Ohi Thermal Power Station Units 2, 3: shutdown due to earthquake
Higashi-Ohgishima Thermal Power Station Unit 1: shutdown due to earthquake

[Hydro Power Station]
4 stations in Fukushima Prefecture were shutdown due to earthquake.
Power stations in Yamanashi Prefecture have been restored.

[Transmission System, etc.]
5 substations shown below have been shutdown:
- Naka Substation
- Shin Motegi Substation
- Joban Substation
- Ibaraki Substation
- Nishi Mito Substation

[Blackout in TEPCO's Service Area]
Total of about 0.6 million households are out of power.
Tokyo: 0
Kanagawa Pref.: 0
Tochigi Pref.: 30,389
Chiba Pref.: 36,456
Saitama Pref: 0
Gunma Pref.: 0
Ibaraki Pref: 537,288
Yamanashi Pref: 0
Shizuoka Pref: 0 (east of Fuji River)

[Supply and Demand Status within TEPCO's Service Area to Secure Stable
Power Supply]
Backup supply from Shinshinano Conversion Station: 600MW
Backup supply from Sakuma Conversion Station: 300MW
Backup supply from Higashi Shimizu Conversion Station: 100MW

Because TEPCO's facilities have been seriously damaged, power shortage
may occur. TEPCO appreciates customers' cooperation in reducing
electricity usage by avoiding using unnecessary lighting and electrical
equipment.

We are taking all measures to restore power, however, we expect extremely
difficult situation in power supply for tomorrow as well.
We kindly ask our customers to cooperate with us in reducing usage of
power.

Please do NOT touch cut-off electric wires.

[Szymon]

Riporto anche dall'altro sito in attesa di aggiornamenti

Attention is focused on the Fukushima Daiichi and Daini nuclear power plants as Japan struggles to cope in the aftermath of its worst earthquake in recorded history. An explosion has been seen at the site.

Three of Fukushima Daiichi's six reactors were in operation when yesterday's quake hit, at which point they shut down automatically and commenced removal of residual heat with the help of emergency diesel generators. These suddenly stopped about an hour later, and this has been put down to tsunami flooding by the International Atomic Energy Agency (IAEA).

Fukushima Daiichi
Unit 1
- 439 MWe BWR, 1971
- Automatically shut down
- Water level decreasing
- Pressure release implemented
- Explosion observed with unknown
effect
Unit 2
- 760 MWe BWR, 1974
- Automatically shut down
- Water level lower but steady
- Preparations for pressure release
Unit 3
- 760 MWe BWR, 1976
- Automatically shut down
- Preparations for pressure release
Unit 4
- 760 MWe BWR, 1978
- Shut for periodic inspection
Unit 5
- 760 MWe BWR, 1978
- Shut for periodic inspection
Unit 6
- 1067 MWe BWR, 1979
- Shut for periodic inspection

Fukushima Daini
Unit 1
- 1067 MWe BWR, 1982
- Automatically shut down
- Offsite power available
- Water level stable
- Preparations for pressure release
Unit 2
- 1067 MWe BWR, 1984
- Automatically shut down
- Offsite power available
- Water level stable
- Preparations for pressure release
Unit 3
- 1067 MWe BWR, 1985
- Automatically shut down
- Offsite power available
- Water level stable
- Preparations for pressure release
Unit 4
- 1067 MWe BWR, 1987
- Automatically shut down
- Offsite power available
- Water level stable
- Preparations for pressure release The loss of the diesels led the plant owners Tokyo Electric Power Company (Tepco) to immediately notify the government of a technical emergency situation, which allows officials to take additional precautionary measures.

Even now, the primary focus of work at the site remains to connect enough portable power modules to fully replace the diesels and enable the full operation of cooling systems.

Pressure and releases

Without enough power for cooling systems, decay heat from the reactor cores of units 1, 2 and 3 has gradually reduced coolant water levels through evaporation. The consequent increase in pressure in the coolant circuit can be managed via pressure release valves. However, this leads to an increase in pressure within the reactor building containment. Tepco has said that the pressure within the containment of Fukushima Daiichi 1 has reached around 840 kPa, compared to reference levels of 400 kPa.

The company has decided to manage this "for those units that cannot confirm certain levels of water injection" by means of a controlled release of air and water vapour to the atmosphere. Because this water has been through the reactor core, this would inevitably mean a certain release of radiation. The IAEA said this would be filtered to retain radiation within the containment. Tepco has confirmed it was in the process of relieving pressure at unit 1 while preparing to do the same for units 2 and 3

Explosion
Television cameras trained on the plant caputured a dramatic explosion surrounding unit 1 at around 6pm. Amid a visible pressure release and a cloud of dust it was not possible to know the extent of the damage. The external building structure does not act as the containment, which is an airtight engineered boundary within. The status of the containment is not yet known.

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.

Over the last several hours evacuation orders for local residents have been incrementally increased and now cover people living within ten kilometres of the power plant.

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.

Workers

A seriously injured worker was trapped within unit 1 in the crane operating console of the exhaust stack. Breathing and a pulse could not be confirmed, Tepco said as it considered a rescue. At unit 3 one worker is known to have received a radiation dose of 106 mSv.

Researched and written
by World Nuclear News

[markolino_dj]

solidarietà! sono un popolo forte.. che si è sempre saputo rialzare a testa altissima!!!

[MaD]

Massima solidarietà ad un popolo culturalmente avanti, sempre pronto al sacrificio e che ha sempre avuto molto da insegnare.
Mi chiedo se apriranno presto le raccolte di fondi per aiutarli.

[Brunix]

Massima solidarietà ad un popolo culturalmente avanti, sempre pronto al sacrificio e che ha sempre avuto molto da insegnare.
Mi chiedo se apriranno presto le raccolte di fondi per aiutarli.

Non ufficiale c'è gia.
http://shirtstuckedin.com/?page_id=2406

[Gagio]

Poveracci, che sfortuna. Non vorrei essere li'.