51
Section IV – Pipeline Under Pressure
3.0 Continued
Figure 4.60. Crank Handle.
Figure 4.61. Close Bleeder Valve
F. Continue rotating the hex drive counterclockwise
until the zero mark on the body tube is reached.
G. Close the tapping valve (Figure 4.62).
H. Open the bleeder valve and bleed off the trapped
pressure from the drilling machine (Figure 4.63).
I. Remove the bleeder valve from the 3/8 x ¼-inch
bushing (Figure 4.64).
J. If applicable, secure the drilling machine to lifting
equipment.
K. Unscrew the drilling machine from the tapping
valve (Figure 4.65).
Figure 4.62. Close Tapping
Valve
Valve
Figure 4.64. Remove Bleeder
Valve
Figure 4.65.Unscrew Drilling
Machine
To Next Page
Loading...