Reliability of Repairable Valves: Analysis of Failure Times from Chemical Plants
Journal Title: International Journal of engineering Research and Applications - Year 2017, Vol 7, Issue 7
Abstract
The non-homogeneous Poisson process (NHPP) is widely adopted to monitor reliability improvement during system development as well as to model the number of failures for complex systems. The most popular functional forms proposed in the literature to model NHPP intensity functionsare monotonicwith time. However, there are situation in which the use of monotonic intensity functions can be too restrictive.In this paper, a new Non-Homogeneous Poisson Process with a non-monotonic intensity function is presented. The model is tested to formulate the reliability of repairable valves that are used for critical functions in a chemical plant. The analysis isperformed by adopting a real set of time data that were collected during the first operative years of the plant. In general, similar applicative cases arise when a model is needed for the reliability of a complex system/plant in the early phase of the operative life. The model fits well all the analysed failure data sets, each corresponding to a specific type of valve.
Authors and Affiliations
Pasquale Erto, Antonio Lepore
Monetary Savings In Electricity Bill By Reviewing Transformer Design And Contract Demand For Prem Nagar (Railway) Colony In Jabalpur.
In this paper existing electrical distribution network of Prem Nagar Railway colony in Jabalpur with specific reference to Transformer losses and Contract Demand has been studied.It includes proposal of revision in trans...
Adsorption Dynamics of Surfactant on Nanoparticles
This Work Is Carried Out For Finding The Dynamics Of Surfactant Adsorption On Surface Of Nanoparticles. Experiments Were Carried Out On Ferrofluid For Given Concentration With Various Particle Sizes. Nanoparticles Were S...
A Study on Fuzzy Matrix in Yoga on Obesity
A fuzzy matrix is a matrix with elements having values in the closed interval [0,1]. Fuzzy Matrices occur in the modeling of various fuzzy systems, with “Max average composition” rule arising from fuzzy set theory. In th...
Investigation on Mechanical Properties of Hybrid Fibre Reinforced Polymer Composites
The main intention of this review is to learn the potential of agro-residues as reinforcements for composite materials as a substitute to natural and synthetic fibre. In recent times, there has been a rapid advancement i...
Energy Efficient Model for Wireless Communication :A Survey
This paper presents a survey of power consumption and technique power saving in the wireless communication at the base station transceiver. As power consumption is becoming a key is suein cellular network and base transc...