Loading the lesson
Loading the lesson
Search AllRounder.ai
Search the courses, subjects, tracks, games and features, or jump straight to a page.
Search the courses, subjects, tracks, games and features, or jump straight to a page.
Learn it your way
A short class with Sarah and her students. The other ways are under More.
Sign up free to listen. Transcripts are free to read.
Today, we'll look at how to calculate downtime costs, which is crucial for assessing machine maintenance. How do we define downtime costs?
Is it related to how much money we lose when the machine isn't operating?
Exactly! It's expressed as a percentage of the equipment cost per hour. For instance, with an equipment cost of 900 rupees, the downtime cost at 3% amounts to 27 rupees per hour.
So, if we operate for 2000 hours a year, what does that look like in total?
We multiply the hourly downtime cost by the total hours. That gives us a yearly downtime cost of 54,000 rupees!
What happens in the following years?
Great question! In the second year, the downtime cost increases to 54 rupees per hour because the percentage rises to 6%. This gives us a total of 1,08,000 rupees. This highlights how downtime costs accumulate over time.
I see how that adds up. It sounds like an important factor for budgeting.
Absolutely! In summary, staying aware of downtime costs and how they accumulate each year is essential for effective machine management.
Now that we've discussed annual downtime costs, let's explore cumulative downtime costs. Can anyone tell me what that means?
Does it mean adding all previous yearly costs together?
Exactly! For instance, adding 54,000 rupees from the first year to 1,08,000 rupees from the second year gives us 1,62,000 rupees for cumulative costs by the end of the second year.
And how do we determine the cumulative cost per hour?
We divide cumulative costs by the operational hours. For the second year, we calculate: 1,62,000 divided by 4000 hours, resulting in 40.5 rupees per hour.
What if productivity drops?
Great observation! A loss in productivity increases costs further. For example, applying a productivity factor of 0.98 in the second year adjusts our cumulative cost per hour to 41.33 rupees.
So we need to consider both costs and productivity in our calculations?
Exactly right! Always account for productivity impacts to truly understand the cost of equipment operation.
Now, let’s discuss obsolescence costs. What do you think this concept refers to in machinery maintenance?
Is it related to how old a machine is and if it's still effective?
Exactly! It's the cost of retaining older equipment that becomes less efficient over time. Can you give an example from the section?
In the second year, the obsolescence cost increases to 45 rupees per hour?
Correct! And yearly it adds up to 90,000 rupees. As technology advances, new, more efficient models can significantly affect these costs.
It sounds like these costs accumulate as well, just like downtime costs.
Absolutely! Cumulative obsolescence costs are critical for evaluating the economic viability of maintaining machines instead of replacing them.
Why is it important to calculate both downtime and obsolescence?
Because understanding the total cost helps determine when a machine's economic life ends, prompting timely replacement.
Costs associated with equipment not being operational.
The total sum of downtime costs over several years.
The financial implications of keeping old machinery.
Adjustments made to account for decreased productivity due to older machinery.
If a machine costs 900 rupees per hour, and the downtime cost is calculated at 3%, then annual downtime for 2000 hours will be 54,000 rupees.
In the second year, with an increase of the downtime percentage to 6%, the hourly downtime cost rises to 54 rupees, resulting in a yearly downtime cost of 1,08,000 rupees.
Downtime costs creep, as machines sleep, add it year by year, don’t forget the total here!
Once a machine worked hard, facing downtime due, it learned to count costs like a wise mentor who knew. Each year brought more wear, so adjusting was fair, obsolescence grew strong like the autumn leaves in the air.
Remember the phrase "DCO" - Downtime Cost, Cumulative Cost, Obsolescence Cost to recall the main costs involved with machinery.
Use 'DCO' to remind you: Downtime, Cumulative, Obsolescence - the three pillars of equipment costs.
Term
Downtime Cost
Click to flip
Term
Obsolescence Cost
Click to flip
Term
Cumulative Cost
Click to flip
The cost incurred due to machinery not being operational, typically expressed as a percentage of the equipment cost per hour.
The total costs of downtime and obsolescence accumulated over time.
The cost incurred by retaining outdated machinery that operates at lower productivity rates compared to newer models.
A coefficient representing the efficiency of machinery, affecting the operational cost and output.
This section discusses the computation of cumulative obsolescence costs associated with machinery over time, considering downtime and productivity losses.
The section outlines the methodology for calculating downtime costs over multiple years, introducing cumulative costs, loss of productivity, and obsolescence costs. It emphasizes the importance of evaluating these costs to determine the optimal replacement time for machinery.
In this section, we dive into the cumulative obsolescence costs that arise when maintaining older machinery over time. The calculations begin with downtime costs, defined as a percentage of the equipment cost, which amounts to 3% of the machine's operational cost per hour (900 rupees). For example, the downtime cost for the first year is calculated at 27 rupees per hour, leading to an annual downtime cost of 54,000 rupees. As the machine ages, the downtime cost increases; by the second year, it rises to 54 rupees per hour, totaling 1,08,000 rupees for that year.
The cumulative downtime cost is aggregated at the end of each year, revealing an increasing trend as the machine ages. To accurately represent the productivity losses when operational downtime occurs, a productivity factor is introduced. For instance, in the second year, a productivity factor of 0.98 leads to an adjusted cumulative cost per hour of 41.33 rupees.
Following downtime costs, the section introduces obsolescence costs, representing losses incurred by holding onto outdated machinery, with an obsolescence rate starting at 0% in the first year and increasing to 0.12 in the third year. These factors are similarly used to calculate the obsolescence costs per hour and annually.
Ultimately, the cumulative costs highlight the growing financial burden of retaining older machines, leading to valuable insights on the economic life of machinery and the rationale for timely replacement for enhanced efficiency and productivity.