Perilous
Times
High radioactivity found in more Japanese workers
* From: AFP
* May 30, 2011 5:33PM
More workers from Japan's stricken Fukushima nuclear plant have
been contaminated by high levels of radioactive iodine, the
operator said.
The workers, reportedly men in their 30s and 40s, have already
been exposed to radiation levels higher than the recently boosted
official annual limit, Japanese media suggested.
Numerous workers have already died from radiation exposure and
TEPCO still refuses to give the exact numbers of radiation deaths
Tokyo Electric Power Company (TEPCO) said it had been measuring
the internal exposure to radiation of all employees involved in
emergency work at the Fukushima Daiichi plant crippled by the
March 11 earthquake and tsunami.
Internal exposure occurs when people take radioactive substances
into their bodies through tainted air or food and drink.
The company notified the governmental atomic energy agency of the
possible problem and the agency confirmed that "the thyroid glands
of employees showed high levels of radiation (iodine-131)", TEPCO
said in a statement.
The inspection by the government agency found 9,760 and 7,690
becquerels of iodine-131 in the thyroid glands of the workers, 10
times higher than other workers at Fukushima, reports said.
The employees were working at a variety of locations at Fukushima
Daiichi, including the central control room, in March and April,
including on March 11 and during the following days.
The tests sparked fears that their radiation exposure had been
several hundred millisieverts, Jiji said.
A few days after the disaster, the Japanese government boosted the
annual limit of radiation exposure for emergency workers to 250
millisieverts from 100 as the nation battled the world's worst
nuclear crisis since Chernobyl in 1986.
Radioactive iodine is known to accumulate in the thyroid gland.