Documentation, Load Charts, and Record Keeping
What this domain tests
This domain tests whether you can read a load chart correctly, apply footnotes and deductions, and keep the records that prove the crane and lift were controlled. The exam focuses on chart interpretation, range diagrams, inspection logs, lift plans, certification records, and defect documentation.
Core rules and concepts
- Use the load chart that matches the crane's serial number, configuration, and revision level. An outdated or wrong chart is a serious error.
- Read the footnotes. They often set out deductions for jib, auxiliary head, hook block, and stowed attachments; they may also restrict travel, quadrants, or boom lengths.
- The range diagram shows the relationship between boom length, radius, and boom angle. Do not estimate radius from the load's position on the ground.
- Record daily pre-operational checks, defects, repairs, annual inspections, maintenance, and load tests. Keep records as required by the jurisdiction and the employer.
- A lift plan should identify the load, weight, crane position, radius, boom length, rigging, ground conditions, signal person, path, and contingencies.
- Operator certification, rigging inspection records, and wire rope certificates should be available for review.
Worked example
A chart at a 14 m radius with a 35 m boom gives 8,200 kg. A footnote says to deduct 900 kg when the jib is stowed and 300 kg for the hook block. Net capacity = 8,200 − 900 − 300 = 7,000 kg. The load weighs 7,500 kg, so the lift is overloaded even though the gross figure looked adequate. The correct action is to reduce radius, change configuration, or reduce the load.
Traps that cost marks
- Ignoring footnotes and using the gross chart figure as net capacity.
- Using a chart for a different boom, counterweight, or outrigger configuration.
- Estimating radius by eye instead of using the chart and range diagram.
- Failing to record defects, repairs, or inspections.
- Keeping an incomplete lift plan that omits rigging, ground conditions, or the signal person.