Exam 14: Extension: Maintenance

In the area of maintenance, the Pareto phenomenon is reflected in the fact that, regardless of problem classification, all equipment will justify about the same expense.

Suppose that the average time before breakdown is normally distributed with a mean of 2.5 weeks and a standard deviation of .4 weeks. If breakdowns cost an average of $1,200 and preventive maintenance costs $800, what is the optimal maintenance interval?

As a piece of equipment begins to break down more often, the manager is often faced with a trade-off in which __________ are weighed against the __________.

Suppose that for a particular piece of machinery, the frequency distribution of monthly breakdowns is as follows: Number of Breakdowns Prob. 0 0.50 1 0.25 2 0.10 3 0.10 4 0.05 The cost of a breakdown is $2,000, and the cost of a preventive maintenance program is $2,000 per month. If the preventive maintenance program is adopted, the probability of a machine breakdown is negligible. How much better off per month would the firm be if it adopted preventive maintenance?

___________ is most closely associated with breakdown maintenance.

The average time before breakdown of a machine is normally distributed and has a mean of nine weeks and a standard deviation of 1.5 weeks. If breakdown cost averages $1,500 and preventive maintenance costs $500, what is the optimal preventive maintenance interval?

Reactive maintenance is _____________ maintenance.

The total maintenance curve (preventive maintenance cost plus breakdown and repair cost):

One basis for scheduling preventive maintenance is passage of time.

In the broadest sense, preventive maintenance extends back to the installation stage of equipment and facilities.

Breakdown maintenance includes activities such as equipment inspection and adjustment.

The major approaches used in plans to deal with breakdowns include all of the following except:

Degree of technology is a factor affecting the decision of how much preventive maintenance is desirable.

The goal of maintenance is to maintain the productive system in good working order while minimizing or eliminating the cost of preventive maintenance.

Factors affecting the decision of how much preventive maintenance is desirable typically include all of the following except:

The frequency of breakdown of a piece of equipment per month is shown in the following table. The cost of a breakdown is $1,000, and the cost of preventive maintenance is $2,000 per month. Assume that the equipment breakdown can be avoided if preventive maintenance is performed. Should the manager use preventive maintenance, or would it be better to fix the equipment when it breaks down? Number of breakdowns 0 1 2 3 4 5 Probability 0.10 0.15 0.20 0.30 0.15 0.10 [COMP: Delete zeros before decimals in table.]

Breakdown maintenance is best performed on a regularly scheduled basis.

Cost of equipment breakdown does not include:

Which of the following is the primary consideration with regard to preventive maintenance?

In the area of maintenance, the Pareto phenomenon is reflected in the fact that: