Workers at the Fukushima Daiichi site are working to prevent further spread of contaminated water following a leak of 300 cubic meters of water from a storage tank on site. The Japanese regulator rated the leak as Level 3-a serious incident-on the International Nuclear Event Scale. TEPCO discovered the leak during a routine inspection on 19 August. An employee found water leaking from a rainwater drain valve in a dike surrounding tanks of contaminated water. A puddle with a depth of approximately 1-2 cm was found inside the dike, with two significantly larger puddles (3m x 3m and 0.5m x 6m) found outside, TEPCO said.
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机译：福岛第一核电站的工人正在努力防止污水从现场储罐泄漏300立方米后进一步扩散。日本监管机构将泄漏定为3级，这是国际核事件等级表上的严重事故。东京电力公司在8月19日的例行检查中发现了泄漏。一名员工发现污水从排污阀周围的堤坝周围的雨水排放阀泄漏。东京电力公司说，在堤内发现了一个深度约为1-2厘米的水坑，在外面发现了两个明显更大的水坑（3m x 3m和0.5m x 6m）。
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