Question 1
As far as maintenance costs are concerned,
◦ preventive maintenance is always more economical than breakdown maintenance.
◦ for high levels of maintenance commitment, breakdown maintenance costs exceed preventive maintenance costs.
◦ Breakdown maintenance is always more economical than preventive maintenance when the "full cost of breakdowns" is taken into consideration.
◦ for low levels of maintenance commitment, breakdown maintenance costs exceed preventive maintenance costs.
◦ for low levels of maintenance commitment, preventive maintenance costs exceed breakdown maintenance costs.
Question 2
For a machine to be a good candidate for preventive maintenance
◦ the consequences of failure must exceed the cost of preventive maintenance and the MTBF distribution must have a relatively low standard deviation.
◦ the consequences of failure must be relatively unknown and, therefore, risky.
◦ the consequences of failure must exceed the cost of preventive maintenance and the MTBF must be relatively high.
◦ the consequences of failure must exceed the cost of preventive maintenance and the MTBF distribution must have a large standard deviation.
◦ the consequences of failure must exceed the cost of preventive maintenance and the MTBF must be relatively low.
What makes tea so good
Preventive and Primary Care Services
The limits of maintenance rehearsal
Gestalt Law of Good Continuation
potatoes as a very good source of vitamin B6
Most Canadian seniors rated their health as good to excellent.