Reliability-Based Opportunistic Maintenance Modeling for Multi-Component Systems with Economic Dependence under Base Warranty

Table 4

The optimal OM schedule for the belt conveyor drive device.

T (days)	Maintenance strategy
	1	2	3	4	5
46.0	O	O	O	B	Y
86.9	O	O	O	O	Y
122.9	O	O	O	B	Y
154.5	O	O	O	B	Y
182.5	O	O	O	O	Y
207.2	O	O	O	B	G
242.0	O	O	Y	O	O
262.5	O	O	Y	B	O
280.8	O	R	G	B	O
330.2	O	O	Y	O	O
373.4	R	O	Y	R	O
411.4	O	O	Y	B	R
445.0	O	O	Y	O	O
474.6	O	O	Y	B	O
500.7	O	O	Y	O	O
523.9	O	O	Y	B	O
544.4	O	O	Y	O	O
562.6	O	R	G	B	R
612.1	O	O	Y	O	O
655.2	O	O	Y	R	O
693.3	O	O	Y	O	O
726.8	R	O	Y	O	O
—	—	—	—	—	—
—	—	—	—	—	—

Y: PM; G: preventive replacement; O: opportunistic PM; R: opportunistic preventive replacement; B: no maintenance actions.