AVAILABILITY IMPROVEMENT OF A SYSTEM USING SUBSTITUTE SYSTEM

Authors

  • Praveen Gupta Gurvindar Kaur School of Studies in Statistics,

Keywords:

Abstract

In present paper repair and replacement policy of one unit system is considered with substitute system.Assuming failure and repair times as exponentially distributed, expressions for the mean time to system failure (MTSF) and the steady state availability for system are derived using linear first order differential equations. A particular case for the proposed system is discussed in which substitute system is not considered. Graphical comparison is also performed to observe the effect of the proposed system on Availability.

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In view of the above, the search for alternative fuels is an ongoing research field. The combustion of fossil based fuels (natural gas, oil, gasoline, petroleum diesel fuel etc.) is a one way process which will eventually exhaust the available stocks of raw petroleum materials and will add significant amount of carbon-dioxide in the atmosphere. A good alternative fuel would ideally come from renewable resources, energy-rich, “green” in its production and be at least “carbon-neutral”.

 

Biodiesel Fuel (BDF) is one such alternative, which meets the needs of a safer and cleaner alternative to the commercial petroleum diesel. The synthesis of biodiesel is not that simple, which is why we don’t find its synthesis on a large industrial scale in any country.

 

In this review the synthesis, properties, applications, scaling-up issues and solutions of BDF are addressed in length and breadth. The review is based on the selected accounts of the up to date research carried in the field of biodiesel. The selected accounts have the potential for a smarter process of a smarter fuel for a smarter and safer environment.

 

References

Mohammad El-MoniemSoleha. Reliability and availability characteristics of a two-dissimilar-unit cold standby system with three modes by using linear first order differential equations. Department of Statistics, Mathematics & Insurance, Ain Shams University, Cairo, Egypt.

Goel, L.R., Gupta, R. and Gupta, P. (1983). Analysis of a Two Unit Standby System with Two Types of Repair and Preventive Maintenance. Microelectronics and Reliability, 23, No.6, PP.1029-1033.

Gupta, P., bedre, M. (2005). Stochastic analysis of a fault tolerant system with two types of failure. Ultra Science Vol.17, 67-72.

Haggag, M.Y. (2009). Cost analysis of a system involving common cause failures and preventive maintenance. Journal of Mathematics and Statistics, 5(4): 305-310.

Goel, L.R. and Gupta, P. (1984). Stochastic analysis of a two unit parallel system with partial and catastrophic failure and preventive maintenance. Microelectronic and reliability, 24 PP. 881-883.

Gupta, P. and Kaur, G. (2016). Reliability and Availability evaluation of a system switched to another similar, substitute or duplicate system on total failure. Journal for innovative research in multidisciplinary field volume - 2, issue - 9, pp. 57- 62.

Kaur, G. and Vinodiya, P. (2016). Availability improvement in single unit system with two types of repair facilities. Journal for innovative research in multidisciplinary field volume - 2, issue - 12, pp. 421- 425.

Kaur, G. and Vinodiya, P. (2017). Reliability analysis of a two- non-identical units cold standby repairable system with switching of units by using linear first order differential equations. Journal for innovative research in multidisciplinary field volume - 3, issue - 1, pp. 92- 98.

Collins, J. and A, Nasir. (2013). Ten ways to increase power system availability in data centers.www.eaton.com/powerequality.

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Published

2017-06-30