krisis nuklir jepang naik ke level 5

Kemlu RI: Himbauan Kepada Warga Negara Indonesia Yang Berada Di Maupun Yang Akan Berkunjung Ke Jepang

Tuesday, 15 March 2011 22:21
krisis nuklir darurat nuklir

Terkait dengan dampak bencana gempa bumi dan Tsunami, kerusakan pada Pembangkit Listrik Tenaga Nuklir di Fukushima dan ancaman radiasi yang diakibatkannya, maka Pemerintah Indonesia menyampaikan himbauan sebagai berikut:

1. Warga Negara Indonesia yang berada di Jepang dan WNI yang memiliki urusan penting untuk berkunjung ke Jepang agar selalu berkomunikasi dengan Kedutaan Besar RI di Tokyo dan/atau Kementerian Luar Negeri di Jakarta mengenai perkembangan terakhir situasi di Jepang.

2. Warga Negara Indonesia yang berada di Jepang juga agar senantiasa memperhatikan dan mematuhi himbauan yang disampaikan Pemerintah Jepang.

3. Warga Negara Indonesia yang memiliki urusan penting untuk berkunjung ke Jepang agar menghindari wilayah-wilayah yang paling parah terkena dampak gempa bumi dan Tsunami antara lain Perfektur Miyagi, Iwate, Fukushima dan Ibaraki.

4. Warga Negara Indonesia agar selalu mengikuti perkembangan terkini khususnya pengumuman-pengumuman yang dikeluarkan Pemerintah Jepang, Kementerian Luar Negeri RI dan KBRI Tokyo.

Japan raises accident severity level to 5 in nuclear crisis

TOKYO, March 18, Kyodo

Japan raised the severity level of crisis-hit reactors at the Fukushima Daiichi nuclear power plant to 5 on an international scale of 7, the same level as the Three Mile Island accident in the United States in 1979, Japan's nuclear safety agency said Friday.

The provisional evaluation stands at level 5 on the International Nuclear and Radiological Event Scale for the plant's No. 1, No. 2 and No. 3 reactors as their cores are believed to have partially melted and radiation leaks are continuing, the Nuclear and Industrial Safety Agency said.

While efforts to cool down the overheating reactors and spent fuel continued a week after the plant was crippled by a massive earthquake and tsunami, Tokyo also reiterated its resolve to do everything to control the situation with International Atomic Energy Agency chief Yukiya Amano arriving in Tokyo.

''This is the biggest crisis for Japan,' Prime Minister Naoto Kan told Amano at the outset of their meeting in Tokyo. ''Every organization (of the government) making all-out efforts to deal with the problem,'' he said, adding Japan will disclose more information to the international community.

The agency put the level at 3 for the Fukushima Daiichi plant's No. 4 reactor, where an overheating spent fuel pool is also posing risks, and three reactors at the Fukushima Daini plant that have been controlled. The highest level of 7 has only been applied to the 1986 Chernobyl catastrophe.

An unprecedented cooling mission, which was launched Thursday by the Self-Defense Forces by spraying tons of water over the Daiichi plant's No. 3 reactor building, was bolstered on the second day with more pumps, after efforts were focused in the morning to restore power to some of the reactors' cooling systems, the government said.

Though it may be a stopgap measure until the cooling systems are restored, SDF fire trucks directed 50 tons of water at the spent fuel pool of the No. 3 reactor in the afternoon, along with a high-pressure water cannon truck loaned by the U.S. military, after aiming up to 104 tons of water at it along with two helicopters and a police water cannon truck the day before.

The Tokyo Fire Department was set to join the operation, likely at the plant's No. 1 reactor, with 30 trucks capable of discharging massive amounts of water to high places and some 140 disaster relief specialists of its ''hyper rescue'' team, but no move has been reported as of late Friday.

Radiation readings at the disaster-hit nuclear plant have consistently followed a downward path through Friday morning, according to data taken roughly 1 kilometer west of the plant's No. 2 reactor, but plant operator Tokyo Electric Power Co. stopped short of calling the move a trend.

The radiation level at 11 a.m. dropped to 265.0 microsievert per hour from 351.4 microsievert per hour at 12:30 a.m. Thursday. It measured 292.2 microsievert per hour at 8:40 p.m. Thursday, shortly after SDF trucks sprayed water at the No. 3 reactor pool as part of efforts to avert any massive emission of radioactive materials into the air from the facility.

The latest radiation levels are below 500 microsievert per hour, the threshold beyond which the operator is required to report an emergency to the government.

It also fell below 0.1 microsievert per hour to levels below those seen before the crisis in the Kanto region surrounding Tokyo, except in Ibaraki, Tochigi, Gunma and Saitama prefectures, which still recorded higher figures, and Miyagi from which no data were reported, the education ministry said.

Edano said radiation amounts near the Fukushima Daiichi plant ''do not pose immediate adverse effects to the human body,'' after the government nuclear safety agency released data collected by Tokyo Electric, or TEPCO.

Agency spokesman Hidehiko Nishiyama noted the difficulty in properly assessing the effects of the water-pouring mission from the radiation data.

TEPCO accelerated efforts to restore lost cooling function by reconnecting electricity to the plant through outside power lines, with workers trying to restore power to the plant's No. 1 and No. 2 reactors possibly during Friday and at the No. 3 and No. 4 reactors by Sunday, according to Nishiyama.

Some of the power distribution boards at the plant have been damaged by the quake-triggered tsunami and TEPCO will use makeshift replacement equipment, he added. Restored electricity is unlikely to activate devices at least until Saturday as equipment needs to be checked, TEPCO said.

The spent fuel pools at the power station lost their cooling functions in the wake of the March 11 killer quake and tsunami. It is also no longer possible to monitor the water levels and temperatures of the pools in the No. 1 to No. 4 reactor buildings.

Plumes of smoke or steam have been seen rising from three of the buildings but not the No. 1 unit, the agency spokesman said, suggesting their pools situated outside reactor containment vessels are boiling, with those at the No. 3 and No. 4 units no longer covered by their roofs since they were blown off by hydrogen blasts earlier this week.

A rise in water temperature, usually at 40 C, causes the water level to fall and exposes the spent nuclear fuel rods, which could heat up further and melt and discharge highly radioactive materials in the worst case scenario, experts say.

Among the six reactors at the Fukushima Daiichi Nuclear Power Station, the No. 1, No. 2 and No. 3 reactors that were operating at the time of the magnitude 9.0 quake halted automatically, but the cores are believed to have partially melted as they lost their cooling functions after the quake.

The buildings housing the No. 1, No. 3 and No. 4 reactors have been severely damaged, leaving fuel pools there uncovered, and the No. 2 reactor's containment vessel suffered damage to its pressure-suppression chamber at the bottom.

The government has set the exclusion zone to cover areas within a 20-kilometer radius of the plant and has urged people within 20 to 30 km to stay indoors.


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