Reliability Assessment of Cogeneration Power Plant in Textile Mill Using Fault Tree Analysis

Abstract

The Combined Heat and Power (CHP) Systems are systems that simultaneously generate both electricity and useful heat. It is important to analyze the reliability of these systems to ensure the lowest level of life cycle cost. A CHP system installed in a textile mill is considered as a case study to assess the reliability through fault tree analysis (FTA). The common cause failures (CCFs) are evaluated using the b-factor model with the available data on the failure of the plant. On a detailed analysis, it is found that the unavailability of the plant is 8.50EÀ03, which is predominantly caused by the problems related to mechanical system, subsystems of boiler, and turbine. The repair and the restoration times for these components used in the fault tree analysis (FTA) are 48 and 8 h, respectively. Hence, faster restoration of these components affected by shutdown/failure and implementation of reliability-centered maintenance (RCM) features will significantly improve the reliability of the system, thereby reducing the time with respect to return on the investment.

Reliability Optimization in the Islanded Mode of Microgrid

“…This will also cause the circuit breaker to fail across the CHP. So, the failure causes of CHP are: gas compressor: disk-high cycle fatigue; low cycle fatigue; blade-high frequency failure due to the resonant vibration; low frequency failure due to the flutter; clashing and clanging due to the surge; stator vanes-surge clashing; high freqeuncy failure due to the flutter or resonant vibration; generator, heat exchanger, recuperator, turbine, gear box, combustor, inverter, circuit breaker [16]. The fault tree for CHP failure with a failure probability of 0.015919 is shown in Fig.…”

Energy and carbon emission savings potential of chemical plant by implementing cogeneration technologies

“…The results of the study show that the cogeneration of heat and power is the most cost-effective alternatives that also have large CO 2 reduction potentials in Swedish pulp and paper mills. Some of other works include, a study on cogeneration in a sugar factory by [13,14], a textile industry by [15,16], pulp and paper mill by [17,18] and palm oil mill by [19]. The review of previous studies supports the fact that utilization of biomass guarantees the heat demand along with full or part of power demands in a chemical plant with a low level of pollution, low ash content and low sulphur concentration in addition to the use of a renewable and cheap source of energy for heat and electricity generations.…”