Radiation Readings at Narita International Airport - Air Niugini
Radiation Readings at Narita International Airport - Air Niugini
Radiation Readings at Narita International Airport - Air Niugini
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<strong>Narita</strong> Intern<strong>at</strong>ional <strong><strong>Air</strong>port</strong> Corpor<strong>at</strong>ion<br />
<strong>Radi<strong>at</strong>ion</strong> <strong>Readings</strong> <strong>at</strong> <strong>Narita</strong> Intern<strong>at</strong>ional <strong><strong>Air</strong>port</strong><br />
【As of March 30, 2011 19:00】<br />
Annual exposure calcul<strong>at</strong>ion<br />
<strong>Radi<strong>at</strong>ion</strong> <strong>Readings</strong> <strong>at</strong><br />
Measured Dose<br />
(×24 hours×365 days)<br />
<strong>Narita</strong> Intern<strong>at</strong>ional<br />
<strong><strong>Air</strong>port</strong> 0.152 μSv/h 1.332 mSv<br />
Unit<br />
Reference<br />
* Sievert (Sv) is an unit expressing the level of influence of radi<strong>at</strong>ion to a person.<br />
・1 milli sievert (mSv) = 1000 micro sievert (μSv)<br />
● Examples of ”<strong>Radi<strong>at</strong>ion</strong> in Daily-life” as publicized by the Ministry of Educ<strong>at</strong>ion,<br />
Culture, Sports, Science and Technology – Japan.<br />
・Chest X-ray Examin<strong>at</strong>ion(1 time)<br />
0.05 mSv<br />
・One roundtrip air travel Tokyo ~ New York<br />
0.2 mSv<br />
・Abdominal X-ray Examin<strong>at</strong>ion (1 time)<br />
0.6 mSv<br />
● According to the World Health Organiz<strong>at</strong>ion (WHO), a person is exposed to an annual<br />
average of 3.0mSv of radi<strong>at</strong>ion in a normal daily life.<br />
【Monitoring Device】Fuji Electric Systems Co., Ltd - Portable Monitoring Post (Model : NAJ51)<br />
【Loc<strong>at</strong>ion of Device】NAA Telecommunic<strong>at</strong>ion Center (5 stories high) Roof Top,<br />
North end (24.5m from ground level)<br />
Note : The soundness of the measuring device, the reliability of the readings and the install<strong>at</strong>ion of the device has been verified by the<br />
Japan Chemical Analysis Center (http://www.jcac.or.jp/ (Website in Japanese only)), an organiz<strong>at</strong>ion which specializes in the analysis<br />
of environmental radi<strong>at</strong>ion and radioactivity.
【Historical D<strong>at</strong>a】<br />
D<strong>at</strong>e Measured Dose Annual exposure calcul<strong>at</strong>ion<br />
1900JST March 29 0.150 μSv/h 1.314 mSv<br />
1000JST March 30 0.154 μSv/h 1.349 mSv
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