Page 146 - Estimators Piping Man Hour Manual

Section Two-FIELD FABRICATION 129

RADIOGRAPHIC INSPECTION

Field X-Ray Of Butt Welds

Carbon Steel Material

NET MAN HOURS EACH
Wall Thickness Wall Thickness
Nominal Greater Than Greater Than
Pipe Wall Thickness Extra Strong Schedule 120 Thru
Size Thru Extra Strong Thru Schedule 120 Double Extra Strong
2 Or Less 0.86 -- 1.13
3 0.86 -- 1.13

4 0.98 1.13 1.27
5 1.07 1.23 1.40
6 1.20 1.40 1.56
8 1.35 1.54 1.75
10 1.51 1.73 1.97
12 1.71 1,97 2.23
14 1.86 2.14 2.42
16 2.08 2.39 2.70
18 2.32 2.67 3.01
20 2.55 2.94 3.34

24 3.15 3.62 4.08
Man hours listed above cover radiographic inspection of butt welded joints by x-raying.
For radiographic inspection of mitre butt welds, add 50% to above man hours.
For radiographic inspection of slip-on flange welds, add 100% to above man hours.
For radiographic inspection of nozzle welds add 200% to above man hours.