"Five Certificates" means that the relevant leaders in the work area organize the substation personnel on duty to inspect and verify the substation site in advance according to the maintenance plan and working ticket requirements. Focus on exploring the scope of power-off equipment, the necessary safety measures for on-site work and the dangerous points in the field, taking into account the actual equipment maintenance work, and avoiding the loss of safety measures due to on-site maintenance work. Five cards (namely, work content card, live work card, risk analysis card, safety measures and instructions card, work director and team leader card) are required for the specific work content, live work card, closed grounding knife switch, installation of grounding wire, fence and signboard, and on-site operation risk (or dangerous point) analysis and control measures.

One picture is the layout of site safety measures. According to the actual situation of the maintenance site, the substation attendant draws a wiring diagram of the whole substation, distinguishes the operation and maintenance equipment with different colors, and marks the safety measures layout of the maintenance equipment on the diagram (including the opened switch and the opened breaker, the installed grounding wire, the closed grounding breaker, the hanging sign, the installed fence, etc.). ).

The display board is a job prompt board. Fix the "five certificates and one drawing" in the corresponding position of the operation notice board and put it on the maintenance site. This kind of exhibition board clearly identifies the operation and maintenance equipment of the maintenance site, and comprehensively and comprehensively displays the layout of safety measures, dangerous points and pre-control measures in the maintenance site, which is simple and clear.