what a basic rigger person needs to do, there are different categories in the oil rig industry, the person that rig loads, that start from all the basic and elementary levels to journeyman, master rigger and even lift director. Well, the basic Rigger signal person their job tasks are to provide help to rigging attachments to the loads, provide assistance to the journeyman rigger and master rigger.
A Rigger must know how to hitch slings to loads whether it’s vertical joke or basket or on multiple legs. They need to know the definitions such as what’s a shackle, what’s a hook, what’s a turnbuckle. They also need to understand how to tie knots and manage a tagline to manipulate below either to rotate it or to stop it from rotating.
Responsibilities of Rigger
A big job for the basic Rigger and Single person is to understand how to inspect the rigging. Make sure, that rigging is in good shape before its being put on the load and then when the lift is done to return the rigging back to the rack.
A rigger must know and understand wire ropes links inspection, chain slings, synthetic flat web slings, synthetic ground slings, rope slings of metal mesh slings, shackles, master links, turnbuckles, hoist rings, all the other hardware components. Even, understand a little bit about spreader bars and lifting beams. And for that they need to go through a training course to get schooled up on identifying the damage and making sure when they can recognize the damage and let somebody know that this needs to be used or can be used right now, or it’s an out of service and then that qualified person that step in making that final decision. But that’s part of the rigging, is the basic rigger responsibilities.
They really don’t need to know a lot more beyond able to put slings to the loads after they’ve been well inspected and then taking them off and serving as a team and getting the work done.
Rigger’s are always under the oversight of a journeyman rigger, and together they will understand blocking and cribbing of loads. It’s their responsibilities to a make sure that the loads stable the slings can easily come out from underneath them and how to protect the slings while they’re being rigger with chafing gear wear pads and abrasion. So, Rigger is a person who is really doing all these things and he is there to do the job based on the assignment.
The other part of rigger job is signalling or flagging. He needs to learn all the hand signals that are appropriate to tower crane, mobile crane and overhead crane. He also needs to understand the voice commands that he might have to use on a radio with a crane operator. If he gets on the radio and says hoist 60 feet, 40 feet, 30 feet, 20 feet, 10 feet, 5 feet stop. He needs to learn that there’s a continuous communication required. So, that if there’s any kind of breakdown of communication, the crane operator is going to stop and see operation until they get it figured it out.
So, learning all these little things are the basic and really critical because he’s going to have a written test and practical for signalling if required.