¥ 价格面议
¥ 价格面议
¥ 价格面议
¥ 价格面议
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容器隔离
3、易燃易爆场所仪表操作注意事项
在易燃易爆场所,仪表工从事仪表维护、故障处理时要注意以下安全事项:
① 首先要了解工作场所易燃易爆等级、危险性程度以及对电气设备的防爆要求;
② 具体操作时,必须由两人以上作业;
③ 对仪表进行故障处理,需和工艺人员联系,并取得他们同意后方可进行;
④ 电动仪表拆装必须先断开电源;
⑤ 带联锁的仪表先解除联锁(切换手动),再进行维护、修理;
⑥ 使用工具要合适,如敲击时,应使用木锤或橡胶锤,必要时用铜锤,不能用钢锤,避免敲击出现火花;
⑦ 照明灯具必须符合防爆要求,采用安全电压,用防爆接头;
⑧ 进入化工设备、容器内进行检修,必须进行气体取样分析,分析结果表明对人体没有影响,在设备内动火符合安全防爆规范时,才能进入;
⑨ 在易燃易爆场所进行动火作业时,必须要办理动火证,经企业安全部门同意后才能进行。动火时要派人进行监护,一旦发生火情,及时扑灭;
⑩ 不要在有压力的情况下拆卸仪表,对于法兰式差压变送器,应先卸下法兰下边两个螺栓,用改锥敲开一个缝,排气、排残液,然后再拆卸仪表;
11 仪表电源、信号电缆接线要符合防爆电气对接线的要求,防止可燃性或腐蚀性气体进入仪表内部。