Ships and containers with radiation readings exceeding a standard level will not be permitted to leave the ports of Tokyo (above), Kawasaki or Yokohama.
Japan’s transport ministry will start measuring the radiation levels of ships and containers leaving the Tokyo Bay area for foreign ports, it said on Friday, in a bid to alleviate concerns about contamination from a nuclear plant crippled by an earthquake.
The ministry aims to implement the measure soon, with certificates recording radiation levels issued to ship owners.