抄録
The most serious troubles in thermal power plants having coal-fired boilers are related to belt conveyors and they are likely to cause short of fuel supply and emergency stop of power plant. In most cases, the troubles are induced by the damage of bearing in belt conveyor. In this study, diagnostic-test by acoustic emission method was ap,plied to 7,280 bearings for detecting the damages. As a result, discernible damages are detected in 15 bearings rejected by AE after the instruments are dismantled. The typical examples of the damages of bearing are demonstrated and characteristics of AE corresponding to the damage are discussed in this paper.
