Non-Slew Crane VOC Questions and Answers

Refresh key Non-Slew Crane knowledge commonly assessed during a High Risk Work VOC. This page provides assessment-aligned guidance and a knowledge check to help you feel prepared.

⚠️ For knowledge refresh only. This does not replace training, site procedures or competency assessment. Voceed accepts no liability for misuse. View full disclaimer.

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Section 1 – Crane Safety, Lift Planning & Site Rules

This section covers the core safety principles required when operating a non-slewing crane. It focuses on planning lifts, identifying hazards, and following site rules to ensure all lifting activities are carried out safely. Understanding these fundamentals is critical for preventing incidents and meeting VOC requirements.

1. What should you do if personal situations are distracting you from your work?

Stop and discuss the issue with your supervisor.

Anyone can stop a lift.

By using the pre-lift assessment.

Before every lift.

Never.

No, never under any circumstances.

All lifting operations cease ASAP, when the situation with the lift has
been made safe.

Cease the lifting operation ASAP when the lift has been made safe.

Any site hazards that will affect the safe operation of the crane such as:

  • trenches and recently back-filled ground;
  • poor ground conditions;
  • other workgroups;
  • traffic;
  • poor lighting;
  • powerlines;
  • obstructions in the working radius of the boom;
  • trees;
  • scaffold;
  • ladders;
  • access and
    exit points.

No.

Section 2 – Crane Setup, Operation & Load Control

This section focuses on how to correctly set up and operate a non-slewing crane. It includes understanding how different factors affect crane capacity, how to control loads safely, and how to interpret load charts. These are critical skills for real-world crane operation and assessment.

11. What effect does a side slope have on the rated capacity of the crane?

It de-rates the capacity.

It de-rates the capacity of the crane.

The rated capacity is decreased.

The formula is: 1 to 1 (i.e. 1m deep = 1 metre away from the edge of
trench/embankment).

Have the Dogger/Rigger stand at 90 degrees to the boom in clear view of
the operator to check.

As per manufacturer and site requirements.

As per manufacturers specifications and site rules. Usually raised up high enough to avoid contact with other mobile plant, vehicles and personnel.

Firm, level, flat and smooth ground.

Forward to and to the side of the crane out of its path and in full view of the crane operator.

A minimum of three (3) full turns on the winch drum.

One (1) degree.

The crane’s load chart.

The power should be isolated and/ or if this is not possible the powerlines MUST be insulated.

Always maintain safe clearance distances when working near powerlines.

Personnel MUST seek an exemption from the relevant authority, and where possible, have the electrical power shut off.

Always maintain safe clearance distances when working near powerlines.

Crane boom could spring up and come into contact with the powerlines.

Always maintain safe clearance distances when working near powerlines.

Section 3 – Inspection, Maintenance & Rejection of Lifting Equipment

This section covers inspection requirements for cranes and lifting gear. It includes identifying defects, understanding rejection criteria, and maintaining equipment to ensure it remains safe for use. Proper inspection is a key responsibility of all operators.

26. What MECHANICAL defects would you look for during an inspection BEFORE starting up the crane motor?

  • Structural damage
  • water and oil leaks
  • condition of V belts
  • water level
  • engine and hydraulic oil levels
  • loose wheel nuts
  • battery condition
  • rope condition
  • Cracks around boom hinge points
  • Cracks around slew pivot points
  • Damage and cracks to the boom
  • Cracks and damage to the slew and hinge points

Must be filled in every time it’s used.

10%

  • Discolouration due to excessive heat
  • 10% of wires are broken over a length of 8 x diameter of the rope
  • Spot welded
  • Kinked
  • Affected by heat
  • Crushed
  • Knotted
  • Stretches, locked or does not move freely
  • Corroded
  • Stretched
  • Overloading
  • Heat affected
  • Effects of acid or corrosive agents
  • Acid and alkaline affected
  • Bird caging
  • Brittleness
  • High standing
  • Cut or broken yarns/strands
  • Twisted
  • Acid and alkaline affected
  • Sun-rot
  • Mildew
  • Heat affected
  • Affects of acid or corrosive agents
  • Overloading

At all times before and after using the slings.

Tag out of service and separate from usable equipment.

Section 4 – Slinging Methods, Calculations & Load Handling

This section focuses on slinging techniques, load handling, and the calculations required to lift safely. It includes understanding sling angles, load distribution, and selecting the correct equipment. These concepts are essential for dogging and rigging competency.

34. When a three-legged sling is used to lift a rigid load, how many legs are assumed to be taking the weight?

2

Chock it to prevent rolling

Double wrap two slings and reeve the eye.

The greater angles between any opposite diagonal sling legs. You can learn more about sling angles from the Voceed Toolbox.

Conduct a test lift to ensure all slinging are tightly secured.

Diameter x Diameter x 8 = SWL

The length of each sling leg is equal to the distance between the two
lifting points (equilateral triangle).

No. 

Rigging diagram showing different eyebolt lifting configurations (A, B, C and D) used as lifting points in crane and dogging operations.
Reveal Answer

C is the correct answer.

 Bow shackle.

25%

No, it is not designed to lift a motor unless rated to do so. Check with the manufacturer for clarification prior to lifting.

1 tonne.

2.4 tonne.

7.8 tonne.

End of Questions

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