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Table 1 Activities involved in fabricating the sample spool

From: Resource-loaded piping spool fabrication scheduling: material-supply-driven optimization

Activity ID

Activity name

Labor

A1

Fit 2 ″elbow and 2″ flange

Fitter

B1

Weld 2 ″elbow and 2″ flange (sub1_1)

Welder

C1

Fit the sub1_1 with 2 ″pipe

Fitter

D1

Weld the subassembly with 2 ″pipe (sub1_2)

Welder

E1

Fit sub1_2 with olet

Fitter

F1

Weld sub1_2 with olet (sub1_3)

Welder

G1

Fit two 6 ″pipes together

Fitter

H1

Weld two 6 ″pipes together (sub1_4)

Welder

I1

Fit sub1_3 and sub1_ 4

Fitter

J1

Weld sub1_3 and sub1_4

Welder