Preventive Maintenance Scheduling for Multicogeneration Plants with Production Constraints Using Genetic Algorithms

Table 2

Maintenance schedules for 21 units of electricity and 21 units of water.

Week number	Generating units scheduled for maintenance
	Electricity	Water
1	14, 16	2, 13, 15
2	14, 16	2, 13, 15
3	4, 7	12, 13, 15
4	4, 7, 10	6, 12
5	7, 10, 12	6, 10, 21
6	7, 10, 12	8, 10, 21
7	12, 19	3, 8, 17
8	12, 17, 19	3, 8, 17
9	9, 17	7
10	9, 17	7
11	2, 3	14
12	2, 3	14
13	2	14
14	2	5
15	15	5
16	15	5
17	—	—
18	—	—
19	—	—
20	—	—
21	—	—
22	—	—
23	—	—
24	—	—
25	—	—
26	—	—
27	—	—
28	—	—
29	—	—
30	—	—
31	—	—
32	—	—
33	—	20
34	—	20
35	—	20
36	—	20
37	—	—
38	—	—
39	—	—
40	—	—
41	1, 18	18
42	1, 18	18
43	8, 11	1, 9
44	8, 11	1, 9
45	5, 11, 20	1
46	5, 20	1, 11
47	5, 13	4, 11
48	5, 13	4, 11
49	6, 21	16, 19
50	6, 21	16, 19
51	6, 21	19
52	6, 21	19