After a brief introduction of the reliability centered maintenance(RCM) system,this paper analyzes the application of RCM in the signaling system of Nanjing Metro Line 1,argues that this technology could help to lower the maintenance cost and enhance the stability and security of metro signaling system.

The signaling system is an essential part in urban mass transit.

Construction and application of boom fluctuation signal control system of retail commerce;

The techniques for the excavation expansion of the inclined well of Tongbo pumped-storage power station are optimized on the basis of summing up the previous construction experience from similar projects,especially its lifting system,signal control system and drill blasting,which creates new situation of the construction of inclined well.

Electrical devices in the control and signal system for substation are expressed as component model with input-control-output, and the system simulation model with certain visibility, commonality and expansibility is established.