A Dynamic Intelligent Decision Approach to Dependency Modeling of Project Tasks in Complex Engineering System Optimization

Table 1

Task information for an engineering design of a chemical processing system.

Number	Description of tasks	Resource				Duration (day)	Predecessor
		𝑟1	𝑟2	𝑟3	𝑟4
1	Operating structure design	3	0	0	0	6	13, 15
2	Vessel design	5	3	3	2	12	7, 9
3	Plant layout/general arrangement	4	2	4	2	5
4	Shipping design	4	2	2	2	8	1, 15
5	Structure lifting design	5	0	0	0	4	1, 7, 9, 12
6	Pressure drop analysis	4	2	2	2	4	8, 15, 17
7	Process engineering	4	3	3	2	3
8	Structural documentation	0	4	2	0	3	3, 4, 5
9	Size valves	2	1	5	3	4	3, 12
10	Wind load design	4	0	0	0	5	1, 2, 8
11	Seismic design	5	0	0	0	9	3, 5, 7, 12
12	Piping design	3	0	0	1	4
13	Process and instrumentation diagram	3	2	0	1	2	2, 7, 12
14	Equipment support	3	0	3	2	2	1, 2, 6, 7, 15
15	Pipe flexibility analysis	4	2	2	2	2	2, 3, 12
16	Design documentation	5	2	2	0	4	1, 2, 3, 5, 10, 18
17	Foundation load design	5	2	4	2	5	4, 9, 13
18	Insulation structural design	2	2	3	3	5	1, 2, 7, 8, 11
19	Structural bill of material (BOM)	3	2	3	4	6	5, 10, 18
20	Assembly design	4	0	0	0	7	4, 9, 12, 14