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"内陆第一核电站"厂址附近地震 环保部回应(图)

2016-03-05 13:00:14   澎湃新闻网

此外,按照我国核安全法规及核电厂抗震安全规范的相关要求,无论所选核电厂址区域的地震活动水平如何低,核电厂址的设计基准地震动不得低于0.15g。所以桃花江核电厂址的设计基准地震动要高于实际评价的结果,最终确定为0.15g。

中国环境报:请您再谈谈桃花江核电站的抗震设计是如何保证地震安全的?能抵抗什么级别的地震?

常向东:桃花江核电项目拟采用的AP1000第三代先进核电技术,具有很高的抗震设防标准,抗震设计水平达到0.3g,远远高于厂址实际的地震危险水平。这样的抗震设防标准至少能够抵御厂址近区域范围发生5~6级左右的地震。如果用地震烈度来衡量可抵御8~9度的影响,而这次发生在桃花江的Ml3.2级地震,只是有感地震,相当于3度地震烈度。

此外,在日本福岛核事故后,国家核安全局高度重视极端外部事件可能对核电站安全产生的影响,不仅对厂址的地震安全进行了复核,同时从设计上也提出了更高的安全要求,进一步提高了核电厂应对严重事故的能力。

因此,无论从桃花江核电厂址的地震安全评价结果,还是拟建核电厂的抗震设计能力,都表明桃花江核电项目建设已经充分考虑了地震的影响,具有足够的抗震安全裕度,核电厂的抗震安全是有保障的。

责任编辑:翟明 CN040
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