Ini salahsatunya:
IWAKI, Japan — Japanese authorities confirmed Saturday that radiation had
leaked from a quake-hit nuclear plant after an explosion destroyed a
building at the site.
The blast at the Fukushima Daiichi nuclear facility occurred just hours
after officials said they feared the reactor could melt down.
Footage on Japanese TV showed that the walls of one building had crumbled,
leaving only a skeletal metal frame standing. Its roof had also been blown
off. Plumes of smoke spewed out of the plant, 20 miles from Iwaki.
Four workers were injured by the blast at Fukushima Unit 1, officials said.
1. Japan earthquake
1. [image: Image: Smoke rises from Fukushima Daiichi 1 nuclear reactor
after an
explosion]<http://www.msnbc.msn.com/id/42044156/ns/world_news-asia-pacific/>
Blast, radiation leak at Japanese nuclear plant
<http://www.msnbc.msn.com/id/42044156/ns/world_news-asia-pacific/>
Updated 6 minutes ago 3/12/2011 10:54:57 AM +00:00
<http://www.msnbc.msn.com/id/42044156/ns/world_news-asia-pacific/42044156>Japanese
authorities confirmed Saturday that radiation had leaked from a quake-hit
nuclear plant after an explosion destroyed a building at the site.
2. Updated 41 minutes ago 3/12/2011 10:19:35 AM +00:00
<http://www.msnbc.msn.com/id/42044156/ns/world_news-asia-pacific/42044293>Japan
aftershocks spark new tsunami alerts
<http://www.msnbc.msn.com/id/42044293/ns/world_news-asia-pacific/>
3. Japan's earthquake: How to help
<http://technolog.msnbc.msn.com/_news/2011/03/11/6246445-japans-earthquake-how-to-help>
4. Early hero of Japan's quake tragedy: Building codes
<http://technolog.msnbc.msn.com/_news/2011/03/11/6246591-early-hero-of-japans-quake-tragedy-building-codes>
5. Japan braces for economic aftershocks
<http://www.msnbc.msn.com/id/42029262/ns/business-world_business/>
6. <javascript:ijv.launchVideo('42045113');>
Explosion rocks nuclear power plant
<javascript:ijv.launchVideo('42045113');>
Updated 32 minutes ago 3/12/2011 10:28:45 AM +00:00
<http://www.msnbc.msn.com/id/42044156/ns/world_news-asia-pacific/42045113>An
explosion at the Fukushkma Daiichi nuclear facility engulfed a
large part of
the plant injuring four workers and causing a radiation leak. NBC's Ian
Williams reports.
7.
<http://cosmiclog.msnbc.msn.com/_news/2011/03/11/6246216-tsunami-awes-even-the-experts>
Japan's tsunami awes even the experts
<http://cosmiclog.msnbc.msn.com/_news/2011/03/11/6246216-tsunami-awes-even-the-experts>
Science editor Alan Boyle's Weblog: Seismic experts have long known
that Japan’s complex undersea fault system can unleash great
waves, but this
one was the most violent tsunami waves to hit the nation in the past
century.
8. [image: Image: People make their way among the debris from
destroyed homes after an earthquake and tsunami in Sendai, northeastern
Japan] <javascript:ijv.launchSlideshow('42034875');>
Massive earthquake hits Japan
<javascript:ijv.launchSlideshow('42034875');>
An 8.9-magnitude quake triggers tsunami, causing enormous damage.
There were conflicting reports about whether or not the damaged building
housed the reactor.
The evacuation zone was doubled in size from six miles to 12 miles, Japanese
broadcaster NHK reported.
Story: How a nuclear plant works
<http://www.msnbc.msn.com/id/42029294/ns/technology_and_science-science/>
Area residents were told to stay indoors, not to drink tap water and to
cover their faces with masks or wet towels, according to Britain's Sky News.
"We are now trying to analyze what is behind the explosion," government
spokesman Yukio Edano said.
Authorities had warned Friday of a failure of a cooling system resulting
from a powerful earthquake and tsunami.
*'Radioactive vapors'
*Pressure had been building up in the reactor and Japan's Nuclear and
Industrial Safety Agency told reporters Saturday that it was venting
"radioactive vapors" to relieve that pressure. Officials said they were
measuring radiation levels in the area.
Before the blast, the reactor in trouble had already leaked radiation:
Operators at the Fukushima Daiichi plant's Unit 1 detected eight times the
normal radiation levels outside the facility and 1,000 times normal inside
Unit 1's control room.
Video: Japanese nuclear plants under meltdown threat
<http://www.msnbc.msn.com/id/42044156/ns/world_news-asia-pacific/#slice-2>(on
this page)
Two reactors had lost cooling ability and a meltdown was possible at one of
the reactors because of the overheating, said Ryohei Shiomi, an official
with Japan's nuclear safety commission.
Speaking before the explosion, he said that if there was a meltdown, it
wouldn't affect people outside a six-mile radius. Most of the 51,000
residents living within the danger area had been evacuated, Shiomi added.
Jiji news agency quoted nuclear authorities as saying that there was a high
possibility that nuclear fuel rods at No. 1 reactor may be melting or have
melted.
Experts said earlier that if that is the case, it means the reactor is
heating up. If that is not halted, such as by venting steam which releases
small amounts of radiation, there is a chance it would result in a rupture
of the reactor pressure vessel.
But the risk of contamination can be minimized as long as the external
container structure is intact, they said. The worry then becomes whether the
quake has weakened the structure.
There has been no official word so far on whether the structure was damaged
by the quake.
Open Channel blog: 2007 Japan quake was wake-up call on nuclear
safety<http://openchannel.msnbc.msn.com/_news/2011/03/11/6245862-2007-japan-quake-was-a-wake-up-call-on-nuclear-safety>
The 8.9 magnitude quake and the tsunami that followed cut off electricity to
the site and disabled emergency generators, knocking out the main cooling
system.
*'No Chernobyl is possible'
*The Tokyo Electric Power Co. (TEPCO), which operates the six-reactor
Daiichi site, said Friday that it had also lost cooling ability at a second
reactor there and three units at its nearby Fukushima Daini site.
The government declared state of emergency at all those units.
Prior to the blast, Japanese officials and experts were at pains to say that
while there would be radiation leaks, they would be very small and have
dismissed suggestions of a repeat of a Chernobyl-type disaster.
Advertise <http://www.msnbc.msn.com/id/31066137/media-kit/> |
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In 1986, the Chernobyl nuclear reactor exploded and caught fire, sending a
cloud of radiation over much of Europe.
"No Chernobyl is possible at a light water reactor. Loss of coolant means a
temperature rise, but it also will stop the reaction," said Naoto Sekimura,
a professor at the University of Tokyo.
"Even in the worst-case scenario, that would mean some radioactive leakage
and equipment damage, but not an explosion. If venting is done carefully,
there will be little leakage. Certainly not beyond the 3-km (1.8-mile)
radius."
Edwin Lyman, a senior scientist with the Union of Concerned Scientists,
which opposes nuclear energy, told msnbc.com Friday that TEPCO was facing a
potential catastrophe.
"It's just as bad as it sounds," he said. "What they have not been able to
do is restore cooling of the radioactive core to prevent overheating and
that's causing a variety of problems, including a rise in temperature and
pressure with the containment (buildings).
"What's critical is, are they able to restore cooling and prevent fuel
damage? If the fuel starts to get damaged, eventually it will melt through
the reactor vessel and drop to the floor of the containment building,"
raising the odds that highly radioactive materials could be released into
the environment, he said.
Video: Japan in shock: 'Nothing compares to what happened'
<http://www.msnbc.msn.com/id/42044156/ns/world_news-asia-pacific/#slice-2>(on
this page)
But Steve Kerekes, spokesman for the U.S.-based Nuclear Energy Institute,
said that while the situation was serious, a meltdown remains unlikely and,
even if it occurred would not necessarily pose a threat to public health and
safety.
"Obviously that wouldn't be a good thing, but at Three Mile Island about
half the core melted and, at the end of the day … there were no adverse
impacts to the public," he said.
msnbc.com
Earlier, experts downplayed the seriousness of the trace levels of radiation
detected at the Fukushima Daiichi plant.
Japan's Asahi Shimbun newspaper reported Friday that radiation levels per
hour in the area near the front entrance of the No. 1 Fukushima plant
reached 0.59 micro Sievert, which is eight times the normal levels. The
central control room of the reactor recorded radiation levels 1,000 times
the normal level, which would be approximately 70 microsieverts per hour, or
7 millirems, according to calculations by msnbc.com.
Generally it would take much higher levels of outside exposure to cause
health problems in humans. Radiation exposure is often measured in units
called "millirem," which is 1/1000 of a rem. The average American is exposed
to about 620 millirem each year, with about half from natural sources and
half from manmade sources, according to the Nuclear Regulatory Commission.
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A chest X-ray results in an exposure of about 8 to 10 millirems per film. A
cross-country airplane flight results in a dose of 4 millirems.
Exposures of less than 50 millirem typically produce changes in blood
chemistry, but no symptoms, according to the U.S. Environmental Protection
Agency.
By comparison, normal exposure rates range from approximately 0.03
microsieverts per hour to 0.23 microsieverts per hour in La Paz, Bolivia,
the highest city in the world.
Video: Northern Japan engulfed in destruction
<http://www.msnbc.msn.com/id/42044156/ns/world_news-asia-pacific/#slice-2>(on
this page)
Dr. Fred Mettler, emeritus professor of radiology at the University of New
Mexico, studied the health effects of the Chernobyl explosions in Ukraine
and has spent decades researching and writing about radiation exposure.
Mettler said the plants in the U.S. and Japan are far advanced from
Chernobyl, which he likened to an airplane hangar with the nuclear reactor
core sitting out in the open.
Japanese scientists have had more than 60 years since World War II to study
the health effects of radiation poisoning and they won't take any step
lightly, including releasing radioactive vapors into the atmosphere to ease
building pressure in a reactor, he said.
"These people are more knowledgeable about radiation than anyone," Mettler
said.
"People don't become acutely sick until they're over 50 rem and more like
100 rem," Mettler said.
However, he noted that Japanese scientists studying health effects since
Hiroshima have determined that some health effects can start to occur at
exposures of 15 rem, even if the results aren't apparent for 10 years.
World Blog: Tokyo street 'rippling like
water'<http://worldblog.msnbc.msn.com/_news/2011/03/11/6247653-tokyo-street-rippling-like-water>
There were about 80,000 survivors of the atomic bomb, for instance, with an
average exposure of 23 rem, Mettler said. During the next 50 years about
9,000 of those survivors died of cancer. However, Japanese scientists
concluded that the toll included about 500 excess deaths, that is, deaths
that would not otherwise have been expected.
The Daiichi site is located in Onahama city. The 460-megawatt Unit 1 began
operating in 1971 and is the oldest at the facility. It is a boiling water
reactor that drives the turbine with radioactive water, unlike pressurized
water reactors usually found in the United States. Japanese regulators
decided in February to allow it to run another 10 years. The reactors were
manufactured by GE. (Msnbc.com is a joint venture between NBC Universal and
Microsoft. GE is a part owner of NBC Universal.)
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The quake, the most powerful since Japan started keeping records 140 years
ago, sparked at least 80 fires in cities and towns along the coast.
Oil refineries were shut down and one refinery was ablaze. Power to millions
of homes and businesses was knocked out.
Severe power shortages were also expected over the weekend.
NBC News, msnbc.com staff, Reuters and The Associated Press contributed to
this report.
Pada 12 Maret 2011 17:51, <[email protected]> menulis:
> Ada kebocoran di reaktor nuklir Fukushima plant setelah ledakan?..... Ada
> yg tau lebih lanjut?
>
> Salam
> Hs
>
> Sent from my BlackBerry® smartphone on 3
> ------------------------------
> *From: *Udrekh <[email protected]>
> *Date: *Sat, 12 Mar 2011 16:23:30 +0900
> *To: *Rovicky Dwi Putrohari<[email protected]>
> *ReplyTo: *<[email protected]>
> *Cc: *<[email protected]>; Forum HAGI<[email protected]>
> *Subject: *Re: [iagi-net-l] Hotline tsunami jepang
>
> Iya sih pingin banget memanfaatkan waktu yang ada untuk mengerti. Kebetulan
> saya selain sama pak Edi gafar juga sama pak Haryadi Permana yang dulu
> banyak bekerja untuk sosialisasi Gempa. Cuman, terus terang agak sulit untuk
> punya waktu dan kesempatan karena masih banyak pekerjaan yang tersisa
> sebelum kami pulang tanggal 16 ini. Selain setress terus digoyang begini.
>
> Kalau saya fikir, di sini lebih cenderung ke local wisdom aja yah.
> Pertimbangan moral nya yang sudah jadi budaya. Paling tidak, itu yang saya
> tangkap dari ceritanya pak Iyung. Artinya mas Ismed, saya nggak yakin akan
> ada penggantian. Kasus yang saya ceritakan bukan pengungsi, hanya karena
> gempa ini menyebabkan transportasi lumpuh total sehingga orang tidak bisa
> pulang. Sehingga mencari tempat berteduh di mal tersebut.
>
> Saya juga sangat berharap, dari kita ada yang terjun ke sini sebagai wujud
> keperdulian seperti bangsa lain berbondong2 membantu kita waktu itu. Selain
> membantu, bisa belajar bagaimana mereka menangani bencana. Di sini tingkat
> kesulitannya jauh lebih berat saya fikir. Nuklir, saluran gas yang terhubung
> ke setiap rumah, cuaca yang dingin dan bahkan salju, dan tingkat kepadatan
> yang tinggi, dan ketergantungan pada teknologi yang rentan dengan bencana
> seperti tranportasi kereta yang punya tingkat kerumitan tinggi. Belum lagi,
> tingkat kehati2an yang mungkin buat kita kelewatan, sehingga kereta pada
> nggak jalan.
>
> Wallahu a'lam
>
> 2011/3/12 Rovicky Dwi Putrohari <[email protected]>
>
>> Mas Udrech berarti di Indonesia melakukan karena local wisdom
>> "tulung-tinulung". Mungkin anda bener karena di jepungp sana lebih
>> tertata dan terukur. Kalau memungkinkan dicopi saja SOPnya trus kita
>> modifikasi dan diusulkan ke BNPB atau malah disosialisasikan lewat
>> IAGI-HAGI sebagai pegangan. Supaya tanggap daruratnya lebih tertata
>> dan terorganisir.
>> Mungkin mas udrekh bisa mendapatkannya lewat i-net atau selebaran yg
>> mereka miliki. Sukur2 dalam versi bahasa Inggerisnya. Jepang mungkin
>> lebih pas sebagai panutan karena memilki kemiripan budaya ketimbang
>> barat (eropa-amrik).
>> Salam
>> RDP
>>
>> On 12/03/2011, Udrekh <[email protected]> wrote:
>> > Amiiin... Iya, urusan keperdulian kita sih rasanya nggak kalah. Cuman,
>> > mereka kok sepertinya lebih punya SOP.
>> >
>> > Btw, saya sendri nggak banyak paham dengan gempa. Rasa2nya, informasi
>> gempa
>> > yang terjadi di Indonesia, jarang mendengar after shocknya sering dan
>> > lumayan besar. Di sini, jadi was-was terus, meningat goyangannya rutin
>> > terjadi , tetap besar, dan hampir mencapai 1 hari.
>> >
>> > 2011/3/12 Rovicky Dwi Putrohari <[email protected]>
>> >
>> >> Hal yang sama sebenernya juga terjadi di Jogja sewaktu Gunung Merapi
>> >> Meletus akhir tahun lalu.
>> >> Bagi yang suka kuliner tentunya tahu Rumah Makan Moro Lejar. Ketika
>> Merapi
>> >> meletus, Rumah makan itu seketika berubah menjadi POSKO Bencana yang
>> >> dikelola IOF (Indonesian Offroad Federation). Walaupun akhirnya
>> terpaksa
>> >> berpindah setelah radius bahaya berkembang menjadi 20 Km. Tetapi ketika
>> >> radius diturunkan, Rumah Makan Morolejar ini berganti kembali menjadi
>> >> POSKO
>> >> Bencana. Saya tahu ini karena bersama IOF saya naik keatas diantar
>> Staff
>> >> bahkan bersama Pak Kapolda.
>> >>
>> >>
>> > --
>> > Udrekh
>> > Marine Geoscientist
>> > Nusantara Earth Observation Network
>> > The Agency for The Assessment and Application Of Technology (BPPT)
>> > BPPT 1th Building 20th floor
>> > M.H. Thamrin no. 8
>> > Jakarta 10340
>> > Indonesia
>> > Phone : 62-21-3168909
>> >
>>
>> --
>> Sent from my mobile device
>>
>> *"Success is a mind set, not just an achievement"*
>>
>
>
>
> --
> Udrekh
> Marine Geoscientist
> Nusantara Earth Observation Network
> The Agency for The Assessment and Application Of Technology (BPPT)
> BPPT 1th Building 20th floor
> M.H. Thamrin no. 8
> Jakarta 10340
> Indonesia
> Phone : 62-21-3168909
>
