US nuclear submarine leaks radiation in Japanese ports

2008-8-8  |     NEWSPAPER EDITION

A UNITED States nuclear-powered submarine which has steadily been leaking a small amount of radiation for over two years stopped at three Japanese ports, as well as Guam and Pearl Harbor, the US and Japan said yesterday.

Japan was notified by the US last week that the nuclear-powered USS Houston had been leaking water containing a small amount of radiation, but was told at the time that it was unclear when the leak had started.

A statement from the US government yesterday said the Houston had been leaking radiation from June 2006 to July 2008. During that time, the Houston docked at the Japanese ports of Yokosuka, 45km southwest of Tokyo and in the southern island of Okinawa, as well as at Sasebo, 980km southwest of Tokyo, the US said.

Both the US and Japanese governments said the radiation leak was too small to cause harm.

"We do not think that the amount of leakage would have any impact on humans or the environment," a Japanese foreign ministry official said.

The Houston may have also released a small amount of radioactivity into Pearl Harbor in Hawaii and Guam, the US statement said.

The radiation leak is a fresh blow for Tokyo and Washington, which has been planning to station a nuclear-powered aircraft carrier in Japan, the only nation in the world to have suffered nuclear attacks.

Local residents and civic groups expressed concern over the deployment of the USS George Washington after a fire on the nuclear-powered warship in May. They called for more information about that fire. Japan said the Houston's radiation leak would not have any impact on the plan to deploy the George Washington at Yokosuka.

"The United States assures strict procedures and prevention systems for nuclear-powered warships coming into port, and Japan is also checking the radiation levels 24 hours a day," the foreign ministry official said.