Continued operation of high temperature tubing in superheaters and reheaters presents operation and maintenance personnel with risk-based decisions. The design of SH/RH tubing and associated dissimilar metal welds is well understood, as are the life degradation mechanisms, which have been thoroughly documented by EPRI. The major problems associated with life prediction of SH/RH tubing are the n...

The reason and mechanism of the failure SA210-C steel liquid wall were analyzed by means macro morphology analysis, chemical composition microstructure analysis XRD phase analysis. test results show that main for water tube is corrosion under inner scale, long-term unqualified boiler quality factor causing wall.

The paper discusses the features of the Biomass Boiler drum water level. Conventional PID Control System can not reach a satisfaction result in nonlinearity and time different from Biomass Boiler Drum Water Control System. In this study, a kind of fuzzy self-adaptive PID controller is described and this controller is used in biomass boiler’s drum water level control system. Using the simulink t...

this paper deals with a failure investigation of boiler feed pump’s shaft of a steam power plant. boiler feed water pump is a specific type of pump used to pump, feed water into a steam boiler and is one of most important part of steam power plants. feed pumps failure may cause failure of another part of steam power station, therefore keep them safe is an important problem. there are 12 feed pu...

Ferric oxide, hematite, "red rust" , it has a lot of names but there is no argument that it is undesirable. It is a loosely adhering oxide layer which has poor heat transfer capabilities. It also tends to deposit elsewhere in the system. It can deposit in the coil, in steam traps and piping downstream, and can eventually reach the boiler. In the boiler it can form further deposits, which in tur...

The paper presents the results of a theoretical stability analysis on a vertical type natural circulation heat recovery steam generator. The evaporator of the boiler consists of four parallel horizontal tube paths, which are connected at both ends with headers. For different operation pressures and geometries the dynamic instability and in particular the density wave oscillation (DWO) was analy...