Chapter 15 S: Maintenance
Maintenance: All activities that maintain facilities and equipment in good working order so that a system can perform as
Breakdown maintenance: Reactive approach; dealing with breakdowns or problems when they occur
Preventive maintenance: Proactive approach; reducing breakdowns through a program of lubrication,
adjustment, cleaning, inspection, and replacement of worn parts.
Reasons for keeping equipment running:
– Avoid production disruptions
– Not add to production costs
– Maintain high quality
– Avoid missed delivery dates
Production capacity is reduced: Orders are delayed.
No production: Overhead continues and cost per unit increases.
Quality issues: Product may be damaged.
Safety issues: Injury to employees and to customers.
Goal is to reduce the incidence of breakdowns or failures in the plant or equipment to avoid the associated costs.