Pockets of lethal levels of radiation have been detected at Japan’s crippled Fukoshima No 1 nuclear plant in a fresh reminder of the risks faced by workers battling to contain the worst nuclear accident since Chernobyl. Tokyo Electric Power said radiation exceeding 10 sieverts (10,000 millisieverts) per hour has been found, but the readings would not hinder its goal of stabilising the reactors by January 2012. Experts warned that worker safety could be at risk if the operator prioritised hitting the deadline over radiation risks. Workers are only allowed to be exposed to 250 millisieverts a year.
The Guardian, 3 August, 2011