预防维护

有计划地进行主动性、预防性维护,保证系统运行稳定可靠。根据大修周期，利用大修进行一次预防性的维护，以掌握系统运行状态,消除故障隐患。大修期间对DCS 系统应进行彻底、全面的维护，内容包括：

1） 系统冗余测试: 对冗余电源、服务器、控制器、通讯网络进行冗余测试。操作站、控制站停电检修。包括计算机内部、控制站机笼、电源箱等部件的灰尘清理。

2） 系统供电线路检修。并对UPS进行供电能力测试和实施放电操作。

3） 接地系统检修。包括端子检查、对接地电阻测试。

大修后系统维护负责人应确认条件具备方可上电，并应严格遵照上电步骤进行。



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