Page 58 - Industrial Process Plant Construction Estimating and Man Hour Analysis
P. 58
Process piping Chapter 2 29
2.3.4 PWHT craft support labor
Facility—Oil refinery
Man-hour per joint
Pipe size MH
0.5 1.00
0.75 1.00
1 1.00
1.5 1.00
2 1.00
2.5 1.13
3 1.35
4 1.80
6 2.70
8 3.60
10 4.50
12 5.40
14 6.30
16 7.20
18 8.10
20 9.00
24 10.80
Place and remove insulation from weld joint.
