Tokyo Electric Power Co. spokesperson Naoki Tsunoda said Wednesday that the company's attempt to stem the leak by injecting 1,500 liters, about 400 gallons, of "water glass," or sodium silicate, and another agent near a seaside pit where the water was leaking appeared to have been successful. The water stopped leaking at 5:38 a.m. (2038 GMT) Tokyo time, Tsunoda said.
The leak was discovered Saturday, and radiation of more than 7.5 million times the legal limit for seawater was found in the ocean just off the tsunami-damaged nuclear plant.
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