sievert

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sievert

[′zē·vərt]
(nucleonics)
The International System unit of dose equivalent, equal to the dose equivalent when the absorbed dose of ionizing radiation multiplied by stipulated dimensionless factors is 1 joule per kilogram. Abbreviated Sv.
A unit of radiation dose, equal to the dose delivered by a point source of 1 milligram of radium, enclosed in a platinum container with walls 0.5-millimeter thick, to a sample at a distance of 1 centimeter over a period of 1 hour; equal to approximately 8.38 roentgens. Also known as millicurie-of-intensity-hour.
References in periodicals archive ?
The guideline sets the lifetime permissible levels of space radiation, such as protons and baryons from the sun, at 600 to 1,200 millisieverts for astronauts, depending on their sex and age at the time of their first space flight.
According to TEPCO, it detected radiation exceeding 1,000 millisieverts per
Radiation above 250 millisievert is said to cause health problems such as a
While the amount of radiation outside the plant, measured in microsieverts and millisieverts, is small, dosages are cumulative.
The Japanese environment ministry had released an estimate last month that over 960 square miles, or 2,400 square kilometers, of land would have to be decontaminated to achieve an annual radiation exposure limit of five millisieverts.
Although he said that the radiation was considerably higher than typical annual natural doses of around one millisievert, the Newsciesntist quoted him as saying that: "These sort of levels pose a pretty small additional risk.
s Oi plant in Fukui Prefecture and Tokyo Electric's Fukushima Daini plant in Fukushima Prefecture may also see radiation doses reach 100 millisieverts.
Tokyo, June 27 (ANI): Over three millisieverts of radiation has been measured in the urine of 15 residents living near the Fukushima Daiichi Nuclear Power Plant, especially in the village of Litate and the town of Kawamata.
Radiation doses could also reach 100 millisieverts in locations a little more than 30 km away from Chubu Electric Power Co.
The radiation readings were up to 4,000 millisieverts per hour at the building, the TEPCO said.
TEPCO uses the dosimeters to decide how long staff at the Fukushima plant can work without exceeding the government-set exposure limit of 100 millisieverts a year.
Tokyo, May 1 (ANI): Tokyo Electric Power Corporation (TEPCO) has said a second female employee has been exposed to radiation exceeding the legal limit of five millisieverts at the earthquake-cum-tsunami hit the Fukushima Daiichi nuclear power plant.