Cranes, Hoisting and Rigging questions for the CHST

Question 1

A crawler crane's load charts are stored only on an in-cab tablet. Midway through a pick, the tablet fails and the operator cannot view the rated capacities. What must the operator do?

1. AImmediately cease operations or follow safe shut-down procedures until the rated capacities are available in electronic or other form
2. BFinish only the lifts already rigged, then stop operating
3. CContinue operating at reduced speed until the signal person confirms the load is within capacity
4. DContinue the lift using the capacities remembered from earlier picks, then report the failure at the end of the shift

Question 2

A crew needs a wire rope bridle to hoist a precast panel. They have a length of wire rope and several U-bolt clips, and the foreman proposes forming the eye at each end of the bridle with clips. He says the clips will be installed with the number and spacing from Table H-2 and with the "U" section on the dead end of the rope. What is the correct response?

1. AApprove it, because following the Table H-2 clip count and spacing makes a clip-formed eye acceptable for a bridle
2. BApprove it, because placing the "U" section against the dead end is the only condition that applies to eyes in slings
3. CApprove it as long as a knot is tied in the tail end as backup to the clips
4. DDo not use the clip-formed eyes, because eyes in wire rope bridles and slings cannot be formed by wire rope clips, however carefully the clips are installed

Question 3

A crawler crane is set up on a congested site, and its counterweight swing path passes within a few feet of a stacked-material area. A rigger needs to check a shackle on a load at ground level on the far side of the superstructure, a spot the operator cannot see from the cab. The rigger is busy carrying tools, so a coworker radios the operator: "Rigger is walking around behind the counterweight now." The operator acknowledges, and the rigger proceeds. Later, the operator needs to swing the boom toward that side while the rigger is still there. Which action does the standard require?

1. AThe operator must not rotate the superstructure until the pre-arranged communication system confirms the rigger is in a safe position.
2. BThe operator may swing at reduced speed with a signal person watching, because the rigger was informed of the swing zone.
3. CThe operator may swing once the controlling entity's supervisor approves, replacing the need for confirmation from the rigger.
4. DThe operator may swing as soon as the rigger has been out of sight for the time needed to finish the task, since notification was already given.