Risk Assessment of Critical Equipment Failure Mode. A Case Study of Olkaria 2 Geothermal Power Plant In Kenya.
Journal Title: IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) - Year 2018, Vol 15, Issue 5
Abstract
Recently in Kenya, there is massive investment in exploration of geothermal energy which is the key source of power to the national grid. However, despite considerable investment in geothermal power sources, in Kenya and many developing countries, few studies address the asset management (maintenance) aspects of existing facilities. Therefore the objective of this paper is to perform risk assessment of critical equipment failure modes in the power plant by using RPN and FMEA techniques. These techniques were considered for determining, classifying and analyzing common failures in the power plant. The first step involved failure data collection, structuring and analysing the reliability data. The next step involved performing risk assessment with a view of prioritizing critical sub-systems and the critical failure modes associated with the critical sub-systems identified. Risk assessment was done by applying RPN and cost-based FMEA analysis where risk is measured in terms of cost of failure of a sub-system. As a result, an appropriate risk scoring of occurrence, detection and severity of failure modes and computing the Risk Priority Number (RPN) for detecting critical sub system failure is achieved. FMEA technique was then applied to determine the critical failure modes for the critical sub systems identified using RPN. The study found out that the critical sub systems experiencing frequent failures were gear reducer, hot well motors and vacuum pumps. The failure costs associated with these sub systems upon downtime are USD 19,930.67, USD 12,911.27 and USD 8,651.20 respectively.
Authors and Affiliations
Koech D. C, Muchiri Peter, Chemweno Peter
Keywords
Related Articles
- EP ID EP438543
- DOI 10.9790/1684-1505026373.
- Views 71
- Downloads 0
Marketing Strategy Model of the Construction Consulting Service in South Kalimantan
The general public of service users have not understood about the value of construction consultancy services. This hampers marketing opportunities in the private sector for construction consulting services particularly,...
Study on Mechanical Behavior of Aluminum Alloy 6061 Based Composites a Review
This paper present the brief review on mechanical behavior of aluminium 6061 based composite. The aluminum alloy 6061 based composite attain different properties with addition of different type of reinforcement. Various...
Application of Cost Control to Construction Projects
A high rate project abandonment due to cost over-run has really defaced the most cities. Among the success parameters of construction project namely: cost, quality and time, the project cost was the most significant amon...
Initiation and Propagation of Crack Due to Corrosion of Reinforcement - An Experimental Investigation
In the field of fracture mechanics of concrete as well as for health risk assessment of reinforced concrete structures in marine environment, the initiation and propagation of cracks due to corrosion of reinforcement pla...
Progression and Forecasting of Steel Demandin Kenya
Increase in usage of steel in Kenya has been witnessed due to the immense growth in the industrial sector and infrastructure. It is quite evident that as the country transforms herself into a middle income economy, it sh...