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A firm had bought 15 machines with the price of RM 20000 per unit excluded the maintenance cost. Recently, these machines often suffer damage and this result in increasing the cost of repair and maintenance cost for each machine is RM10 per unit, while the repair cost is RM30 per unit. Table Q4 shows record that indicates this breakdown history on the machines.Frequency of Preventive Maintenance: 1 2 3 4 Probability of breakdown machine: 0.1 0.2 0.3 0.4 a.) The expected number...
A firm had bought 15 machines with the price of RM 20000 per unit excluded the maintenance cost. Recently, these machines often suffer damage and this result in increasing the cost of repair and maintenance cost for each machine is RM10 per unit, while the repair cost is RM30 per unit. Table Q4 shows record that indicates this breakdown history on the machines.Frequency of Preventive Maintenance: 1 2 3 4 Probability of breakdown machine: 0.1 0.2 0.3 0.4 a.) The expected number...
Maintenance management QUESTION 1 The reliability centered maintenance (RCM) provides the criteria for choosing the best proactive tasks that are technically feasible. Discuss the four main task selection processes. se s 1.1 12x4 8] Considering the performance standards of an asset, discuss the difference between the built in capacity. Give a practical example, 1.2 18] different from the ones given in your text book. QUESTION 1 The reliability centered maintenance (RCM) provides the criteria for choosing the best proactive tasks...
A Manufacturing Engineer wanted to study whether doing preventive maintenance affected the reliability of a machine. The machine was observed from 2220 shifts with preventive maintenance and 2280 shifts without preventive maintenance and the number of shifts where the machine failed was recorded. The following results data was obtained: # shifts failed Total shifts Preventive 95 2220 No preventive 139 2280 Test at a 5% significance level if there is a difference in doing preventive maintenance on this machine or not using...
RCM stand for Reliability-Centered Maintenance RCM method In RCM analysis, we should first choose what systems should be analysed. Recommended way to select systems is... use 80/20 rule based on your own opinion evaluate average fault frequency for the whole plant and select the systems with above average fault frequency. use 80/20 rule based on collected data like number of outages, maintenance costs etc. Do not select only some systems but do the analysis for all systems. Submit
What is the useful life in hours for a product having a reliability of 0.985 and a failure rate of 0.015 failures per hour? A) 120 B) 200 C) 280 D) 360 E) 440
Q5. For reliability considerations for ball bearings, which of the following are true? a) Reliability (%) = 100%-failure percentage b) Median of a reliability population distribution is critical to understand fatigue life c) Shock loading increases nominal loading by a certain factor, K. d) All options a-c are true e) Only options b) and c) are true 8
Which of the following is NOT true about reliability? a) The "best" method for estimating reliability depends on a variety of situational factors b) Measures are either reliable or they're not c) The reliability of a measure cannot be directly asseses. It can only be estimated d) Reliabily coefficients can vary from 0.00 to 1.00
A system has three components with with reliability 0.6, 0.92 and 0.95, the system reliability is calculated as 1.01. how the components are arranged