In order to deal with the problem of blindness in spot inspection in power plant

reliability spot inspection (RSI) is put forward in this paper.Based on the topology structure of system function and equipment running state

RSI divides spot inspection planning into two phases which are static planning and dynamic adjusting.Firstly

from the point of system inherent function

RSI sorts system function into key function and non-key function according to lethality by WFMEA analysis and performance analysis

then plans spot inspection tasks respectively.Secondly

RSI evaluates the running risk of equipments with key function during the period of running

and sort equipments into highest risk equipment

higher risk equipment and low risk equipment according to equipment current running risk

then adjust spot inspection planning dynamically.So

RSI not only ensures the system necessary reliability

but also saves a lot of resources and improves the spot inspection efficiency

which optimizes both the safety and economy of the system and guides the practice of spot inspection in power plant.