Lecture noteshttps:drive.google.com/file/d/1HNsNSn7gTzd2zNo6f4YpUf7CF6-LXc9e/view?ts=60b810

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RSE4120 Final assessment
a) The noted curve for “bathtub failure rate” mainly includes three stages namely the infant mortality stage, normal life stage and wear-out stage. The infant mortality stage has decreased failure rate although the normal life stage has a constant and low failure rate. The concluding wear-out phase exhibits an increased failure rate.
A prominent example of mining equipment is Loaders. 
b) Any asset’s economic life is considered as the time period during which the asset had remained thoroughly useful to the owner. The financial considerations including varied costs are required to calculate the asset’s economic life. The varied costs that are included in this estimation are the purchasing amount, the production cost and regulations-based cost for the asset. 
c) The 4 basic maintenance strategies are identified with individual disadvantages and advantages:
· Breakdown Maintenance
Disadvantages:
Failure gets unpredicted
Extremely costly
Possess safety risk for other assets and employees
Advantages:
Requires minimal planning
Simple and easy to comprehend the process
Requires fewer staff
· Predictive Maintenance
Disadvantages:
Huge upfront costing
Advantages:
Minimum time and cost for machine downtime
Reduced failure likelihood with improved reliability
· Periodic Maintenance
Disadvantages:
Requires planning time
Parts get replaced prior life-end and ask for more charges
Advantages:

Lecture notes https://drive.google.com/file/d/1HNsNSn7gTzd2zNo6f4YpUf7CF6-LXc9e/view?ts=60b8bb10

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