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A short class with Sarah and her students. The other ways are under More.
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Today, we'll start with downtime costs. These costs are crucial to understand in equipment management! Can anyone tell me what the downtime cost per hour might be if the equipment cost is 900 rupees per hour?
Is it 27 rupees per hour?
Correct! It's 3% of 900, which gives us 27 rupees. Now, if my machine operates for 2000 hours in a year, can anyone calculate the yearly downtime cost?
I think it’s 54,000 rupees?
Yes! Great job. That's 27 multiplied by 2000. Knowing how to calculate these costs helps us manage machines effectively.
Continuing from our last discussion, how do we obtain the cumulative downtime costs over multiple years?
Do we simply add the yearly costs?
Exactly! If we consider the first year being 54,000 and the second year being 108,000, what would our cumulative be after two years?
That would make it 162,000 rupees!
Well done! Adding unnecessary costs like these shows us how to manage finances better in operational settings.
Now, let’s explore obsolescence costs. Can someone explain why this cost is essential in equipment management?
It affects the performance of older machines, which can result in higher operational costs?
Right! As equipment ages and we cling to them, we incur costs. For instance, how is the obsolescence cost calculated if it’s 5% in year two?
It would be 45 rupees per hour!
Precisely! And can we translate this to a yearly cost?
Yes, that would be 90,000 rupees!
Excellent! Understanding how obsolescence affects our costs is vital for maintaining operational efficiency.
Finally, let’s discuss the economic life of a machine. Does anyone remember what economic life refers to?
It's the period where the total costs for operating a machine are minimized, right?
Exactly! After this period, costs start to rise significantly. Can anyone illustrate why it’s key to replace machinery at this point?
A machine might not operate efficiently, leading to increased expenses!
Yes, so it’s crucial we analyze all costs to determine when to replace equipment effectively!
The cost for machines being non-operational, calculated from their costs.
Costs involved due to older machinery losing value.
Duration where operation cost per hour is lowest prior to increase.
Total costs accumulated over multiple operational years.
Factor affecting overall cost due to change in productivity levels.
For downtime a cost, don’t get lost, just count your hours and pay no extra cost.
Imagine a factory where machines grow old, each year they rattle and don’t run bold. Replacing them quickly could save a dime, a wise choice indeed to avoid wasted time.
D.O.E - Downtime, Obsolescence, Economic life, remind us of key factors affecting machinery costs!
C.O.S.T - Cumulative, Operating, Service, Time. Remember these for analyzing equipment effectively.
Term
Downtime Cost Calculation
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Term
Cumulative Cost
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Term
Obsolescence Factors
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The cost incurred when a machine is not operational, calculated as a percentage of equipment cost.
The lost value or increased expense of retaining an older machine due to its decreased productivity compared to newer models.
The period during which the cost of operating a machine per hour is minimized before increasing due to factors like maintenance.
The total cost incurred over time, accounting for yearly expenses accumulated throughout the life of the machine.
An adjustment made to account for changes in efficiency due to machine downtime, affecting overall operating costs.
This section focuses on calculating downtime and obsolescence costs for machines, emphasizing the economic life of equipment and the impact of productivity loss.
In this section, we delve into the calculations of downtime and obsolescence costs over the years of machine operation. We examine how these factors influence overall productivity and highlight the significance of determining the economic life of a machine, which helps in deciding the optimum replacement time for equipment.
This section outlines the critical aspects of calculating downtime and obsolescence costs related to machinery in operation. It begins by establishing that downtime costs are derived as a percentage of equipment costs, where a 3% cost results in 27 rupees per hour, escalating to 54 rupees in subsequent years due to increasing downtime percentages (from 3% to 6%).
The section further highlights how yearly downtime costs can be accumulated over periods, leading to a cumulative downtime cost that assist in determining the cumulative cost per hour of operation.
Moreover, it addresses the loss of productivity, indicating how repairs lead to increased operational costs to regain productivity levels. This leads into adjusting cumulative downtime costs to account for productivity changes, further elaborating on equations that help synthesize these costs, e.g., productivity-adjusted cumulative costs are given by dividing the computed costs by the productivity factor.
Following this, obsolescence costs are discussed, noting that as machines age, they incur wear and tear leading to reduced productivity and increased repair costs. A systematic calculation of obsolescence costs for years one through three demonstrates how these factors accrue over time and impact decision-making in terms of equipment replacement.
The section culminates in explaining the economic life of a machine, characterized by the period during which costs are minimized before starting to increase due to maintenance and repair necessities. Thus, establishing the optimum replacement time for a machine is depicted as critical for efficient equipment management, emphasizing the necessity to consider all associated costs to determine the ideal point for replacement.