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17. Downtime Cost Calculation

The chapter delves into the financial implications of machine downtime costs, obsolescence, and the economic life of equipment, emphasizing the need for timely replacement to minimize costs. It outlines how cumulative costs evolve over time and how depreciation, maintenance, and obsolescence hitches can affect the total cost of ownership. Analytical methods are discussed to identify the optimal replacement time to optimize productivity versus cost.

Sections

Downtime Cost Calculation

The section covers how to calculate the downtime costs associated with equipment, including both hourly and yearly assessments, and introduces concepts such as cumulative costs and productivity adjustments.

1 Section Overview

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1.1 First Year Downtime Cost

This section explains how to calculate first-year downtime costs associated with equipment and the varying costs in subsequent years while considering factors like productivity loss and obsolescence.

1.2 Second Year Downtime Cost

This section discusses how to calculate downtime costs per hour and year for machinery, emphasizing the impact of downtime on productivity and obsolescence.

1.3 Cumulative Downtime Cost

This section addresses the calculation and implications of cumulative downtime costs associated with equipment over its operational period.

1.4 Cumulative Cost Per Hour Calculation

This section explains the calculation of cumulative costs per hour related to machinery downtime and obsolescence over multiple years.

1.5 Loss in Productivity

This section discusses the financial implications of downtime costs due to loss in productivity, detailing the calculation of cumulative costs over the machine's operational lifespan.

1.6 Productivity Adjusted Cumulative Downtime Costs

This section explores how downtime costs are calculated per hour and how these costs accumulate over time, adjusting for productivity.

Obsolescence Cost Calculation

This section outlines the process of calculating obsolescence costs related to equipment, including downtime and productivity adjustments over an operating period.

2 Section Overview

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2.1 Second Year Obsolescence Cost

This section discusses the calculation of downtime costs and obsolescence costs associated with aging equipment over multiple years.

2.2 Third Year Obsolescence Cost

This section discusses the calculation of various costs associated with machine downtime and obsolescence over time.

2.3 Cumulative Obsolescence Cost

This section discusses the computation of cumulative obsolescence costs associated with machinery over time, considering downtime and productivity losses.

2.4 Cumulative Cost Per Hour Calculation for Obsolescence

This section discusses the calculation of cumulative costs related to downtime and obsolescence in equipment maintenance over time.

Summary of Costs and Economic Life Assessment

This section outlines the assessment of costs associated with machine downtime, obsolescence, and overall economic life, highlighting the importance of determining optimal replacement timing for equipment.

3 Section Overview

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3.1 Trends in Cost over Years

This section discusses how costs associated with machinery, including downtime and obsolescence, evolve over the years and the importance of determining optimal replacement times.

3.2 Economic Life of the Machine

This section discusses the various costs associated with machine downtime, depreciation, obsolescence, and how these affect the economic life of the machine.

3.3 Importance of Accurate Cost Estimation

Accurate cost estimation of downtime and obsolescence is crucial for evaluating the economic life of machinery, ensuring optimal replacements and operational efficiency.

Upcoming Topics

This section focuses on calculating downtime and obsolescence costs for machines, emphasizing the economic life of equipment and the impact of productivity loss.

4 Section Overview

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4.1 Equipment Replacement Analysis Overview

This section details the calculation of downtime and obsolescence costs associated with equipment, emphasizing the importance of determining the optimal time for machinery replacement.

4.2 Defender and Challenger Comparison

This section elaborates on calculating downtime and obsolescence costs, emphasizing the importance of understanding these costs in comparing existing (defender) and potential replacement (challenger) machines.

Learning Objectives

  • Downtime costs can accumulate significantly over the life of equipment.

  • Obsolescence costs emerge as equipment ages and alternatives become more productive.

  • Determining the economic life of machinery is crucial for cost management and maximizing productivity.

Key Concepts

Downtime Cost

The cost incurred due to equipment not being operational, specified as a percentage of the equipment cost.

Obsolescence Cost

The cost associated with retaining old equipment which has diminished productivity compared to newer models.

Economic Life

The period during which the cumulative cost per operating hour of owning and operating equipment is minimized.

Cumulative Cost

The total cost of ownership of equipment over its operational life, calculated cumulatively year by year.

Practice Exercises

Total Questions

2

Estimated Time

4 min

Passing Score

70%

Instructions

  • Read each question carefully
  • You can use hints if you need help
  • Complete all questions before submitting
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