The current electricity demand is increasing, and now the government has involved third parties in the implementation of electricity so that investors compete for building infrastructure in order to apply electricity. Thermal power is one source that has a fast break event point compared to other resources that more interested investors even with all forms of pollution caused. A form of heat power using a vapor pressure is fired into the turbine so that it will cause a rotating force that will turn the generator of an electric generator. thermal power has the ability to generate electricity large, but if there is a failure in operation, then the burden will quickly lose power sources that can cripple production activities. FMEA is one of the most widely used tools for the industry to analyze the root cause of the system so that the system is protected from small and large damage and can disrupt the stability of the industrial operating system. The reliability of the machine must always be maintained so that with this method it is expected to help the power service providers to maintain the availability of its services. With the implementation of FMEA, we get an overview of the steps to be taken for the future so that the reliability of a steam generator BOILER system can be improved.

This paper deals with 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 other parts of steam power station, therefore keep them safe, which is an important problem. There are 12 feed pumps in Bandar Abbas power plant. They are old and due to failure of feed pumps because of trying to avoid repetition problem, working condition of 3 dimensional pump’s shaft is modeled with Abaqus software via finite element method analysis.Causes of pump failure and stresses exerted on it are investigated and finally appropriate suggestions such as smooth starting and inverter are proposed.

BOILER-turbines are one of the most important parts in power generation plants. The safety problem in such systems has always been a special concern. This paper discusses the application of control reconfig uration by fault-hiding approach for a BOILER-turbine unit. In Fault-hiding approach, after occurrence of a fault, nominal controller of the system remains unchanged; instead, a reconfiguration block is designed and placed between nominal controller and faulty plant to modify input signals. Three major faults are assumed to occur in three actuators of the system consisting of fuel flow valve, steam control valve and water flow valve. Faults cause the outputs of the plant to deviate from desired values and in some cases cause instability in the system. Setpoint tracking recovery and optimal performance recovery problems to diminish effects of the faults are investigated. The results of simulations show that the reconfiguration has been successful in both cases and also confirm the applicability of the method for the BOILER-turbine unit since the reconfigured closed-loop system has had tolerable properties against faults.

Drum BOILERs consume is one of the most important equipment of the thermal power plants in many countries and are widely used in industrial process applications. A BOILER-turbine unit is a typical multivariable industrial control system in power plant. The BOILER is so manufactured that the drum level must be in the specified range. Output constraints are an important challenge in BOILER drum systems to have safety and efficient operation. In this paper, the problem of state space model predictive control for a constrained nonlinear BOILER drum systems is investigated. Predictive control is a highly efficient and strong method since its control performance has been reported to be best among other conventional techniques to control the multivariable dynamical plants with various inputs and outputs constraints. Simulation results demonstrate the satisfactory performance and effectiveness of this method and compatibility with practical implementation in BOILER.

Steam BOILER is a common primary utility that creates steam by applying heat energy to water in a close system and poses different threats. The present study aimed to identify health, safety, and environmental hazards by implementing Hazard Identification (HAZID) method and Analytical Network Process (ANP). Therefore, the identified hazards were categorized and scored by HAZID method and then, prioritized using ANP. A total number of 58 hazards were identified in 4 categories; of which, 6 hazards were weighted by the super decisions software. According to the results, job stress and cooling system wastewater were recognized as the most and the least important hazards, respectively.