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污水处理厂项目施工期间防电避雷措施.doc

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污水处理厂项目施工期间防电避雷措施 污水处理厂项目施工期间防电避雷措施提要:在雷雨季节施工时,钢脚手架应设避雷装置:接闪器可用直径25~32mm,壁厚不小于3mm的镀锌钢管或直径不小于12mm的镀锌钢筋制作 更多精品来自简历 污水处理厂项目施工期间防电避雷措施 1防电 1、钢管脚手架在架设和使用期间,要严防与带电体接触。钢脚手架需要穿过或靠近380V以内的电力线路,距离在2m以内时,在架设和使用期间应断电或拆除电源,如不能拆除应采取可靠的绝缘措施: 2、对电线和钢脚手架进行包扎隔绝。可用橡胶布、塑料布或其它绝缘性能良好的材料,由专业电工进行包扎,包扎好的电线,应用麻绳捆牢、磁瓶固定,与钢管脚手架保持一定的距离,如不能使电线与脚手架离开,可在包扎好的电线与包扎好的钢脚手架之间设置可靠的隔离层,并绑扎牢固,以免晃动磨擦。 3、钢脚手架采取接地处理。如电力线路垂直穿过或靠近钢脚手架时,应将电力线路周围至少2m以内的钢脚手架水平连接,并将线路下方的钢脚手架垂直连接进行接地;当电力线路和钢脚手架平行靠近时,应将靠近电力线路的一段钢脚手架在水平方向连接,并在靠墙的一侧每隔25m设一地极,接地极入土深度2~。 4、在钢脚手架上施工的电焊机、振捣器等,要放在干燥木板上,操作者要戴绝缘手套、穿绝缘鞋,经过钢脚手架的电线要严格检查并采取安全措施。电焊机、振动器外壳要采取保护性接地或接零措施。 5、夜间施工和深基操作的照明线通过脚手架时,应使用电压不超过12V的低压电源。 2避雷 在雷雨季节施工时,钢脚手架应设避雷装置:接闪器可用直径25~32mm,壁厚不小于3mm的镀锌钢管或直径不小于12mm的镀锌钢筋制作,设在房屋四角的脚手架立杆上,高度不小于1m,并将所有最上层的横杆全部连通,形成避雷网路。在垂直运输架上安装接闪器时,应将一侧的中间立杆接高出顶端不小于2m,并将该立杆下端设置接地线,同时应卷扬机外壳接地。 3接地极 1、接地极的材料:垂直接地极,用长~∠50×5角钢;水平接地极用长度不小于3m,厚4mm,宽25~40mm的扁钢。 2、接地极的设置:可按脚手架的连续长度不超过50m设置一个接地极,但应满足接地极最远点、内脚手架上的过渡电阻不大于10Ω的要求,否则应缩小接地间距。 Plenary Session of the 15th CPC Central Committee, two session of the five plenary meeting spirit, fully implement the Scientific Outlook on Development based XX youth career development planning in accordance with the 11th Five-Year , building a first-class team, with first-class team. First-class performance, the overall requirements of first-class image of the tree , focusing on human services, standardized management, work fine, first-class achievements , give full play to staff assistant, supervision and inspection, comprehensive coordination, service guarantee, focus on the global and group work of the Communist Youth League in the city Municipal Party Central work, and strive to improve the decision-making ability, comprehensive coordination ability, writing ability, supervision ability, logistics ability, innovation ability, continuously consolidate and maintain the education on Party membersadvancement activities and enhance awareness of the Communist Youth League education achievements, and vigorously promote the construc
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