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Vol.15, No.3, 2015, pp.167–171 |
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DETERMINING THE RELIABILITY FUNCTIONS OF THE BOILER TUBING SYSTEM IN POWER PLANT ‘NIKOLA TESLA, BLOCK A4’ Dragan Kalaba1, Milan Đorđević1, Vladan Ivanović2 1)University of Priština in Kosovska Mitrovica, Faculty of Technical Sciences, Kosovska Mitrovica, Serbia dragankalaba@gmail.com 2)University of Montenegro, Faculty of Mechanical Engineering, Podgorica, Montenegro |
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Abstract The objective of this paper is a representation of the probabilistic reliability assessment of boiler tubing system in the fossil fuel power plant. Exploitation research of the reliability indicators of a boiler tubing system in the fossil fuel power plant ‘Nikola Tesla, Block A4’ during useful life period is based on an eleven-year failure database. By applying the reliability theory, based on statistics and theory of possibility, and using simple and complex two-parameter Weibull distribution, the theoretical reliability functions of the specified system are determined. Obtained probabilistic laws of failure occurrence by different Weibull distribution models are compared in order to evaluate how close listed mathematical distributions describe behaviour of such a system in terms of reliability. Shown results make possible to acquire a better knowledge of current state of the system, as well as a more accurate estimation of its behaviour during future exploitation. Keywords: boiler tubing system, reliability, Weibull distribution |
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