Alterações no passo nº 3
Linhas do passo
| [* icon_note] You will need at least three people to perform pipe lifting. Two people to lift, and one person to operate the base clamp. Workers should constantly be communicating whether they are ready, lifting, and whether or not the base clamp is secure. | |
| - | [* black] Have two people place C wrenches on the |
| + | [* black] Have two people place C wrenches on the riser main on opposite sides of each other. |
| [* icon_note] C-wrenches should always be placed such that their openings are opposite and they do not contact each other, the base clamp, or the pipe coupling. | |
| - | [* black] Have the two people with C-wrenches apply light upward pressure to the |
| + | [* black] Have the two people with C-wrenches apply light upward pressure to the riser main while the base clamp operator loosens the clamp. |
| [* black] Lift the pipe evenly, not exceeding the comfortable lifting height of either lifter. Re-secure the base clamp once the maximum lifting height has been reached. | |
| [* black] Lower the C-wrenches and repeat this step until the pipe coupling reaches the base clamp. |