Rigging Inspection and Safety 210

This class covers basic inspection and safety procedures for rigging equipment and lifting devices.

  • Difficulty Intermediate

  • Format Online

  • Number of Lessons 15

  • Language English


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Course Outline
  • Objectives
  • Rigging Inspection and Safety
  • Chains: Inspection
  • Chains: Handling and Care
  • Preventing Wire Rope Failure
  • Wire Rope: Inspection
  • Wire Rope: Handling and Care
  • Wire Rope: Breaks
  • Natural Fiber Rope: Inspection
  • Synthetic Fiber Rope: Defects
  • Slings, Hooks, and Shackles
  • Scaffolds
  • Ladders
  • Cranes
  • Summary
  • Describe the importance of rigging inspection and safety.
  • Describe the procedures for inspecting chains.
  • Describe best practices for chain handling and care.
  • Describe how to prevent wire rope failure.
  • Distinguish between abrasion, corrosion, and diameter reduction in wire rope.
  • Distinguish between crushing, shock loading, and high stranding in wire rope.
  • Distinguish between different types of breaks in wire rope.
  • Describe procedures for inspecting natural fiber rope.
  • Describe the types of defects that can occur in synthetic fiber rope.
  • Describe procedures for inspecting slings, hooks, and shackles.
  • Describe basic safety precautions for working on scaffolds.
  • Describe basic safety precautions for using ladders.
  • Describe basic safety precautions for using cranes.
vocabulary term

6 x 19

A six-strand wire rope with 19 wires per strand.


Damage from repeated rubbing or scraping that is concentrated in the same place. Abrasion can cause a loss in diameter.

abrasion break

A type of break in wire rope that occurs when repeated rubbing or scraping is concentrated in the same place on the rope, wearing down the wire at an angle. Abrasion breaks are thin and pointed, like a knife.


A corrosive chemical compound. Acid fumes can cause damage to wire rope.

alloy steel

Steel that is composed from iron and one or more other metals.


American National Standards Institute. A private organization that sets voluntary standards for commercial products and services.

bearing point

The end of a chain link where it joins another link or bears a load.


Permanent damage to a wire rope from shock loads. Strain causes the strands of rope to protrude in the form of a birdcage.

bolt cutter

A tool used for cutting chains and other pieces of metal that require a high level of cutting force.


A series of linked metal rings that are fitted together. Chains can lift heavy loads and are resistant to abrasion and corrosion.


Darkened appearance caused by burning or scorching.


The distance from any part of the crane to a point of the nearest obstruction.


Wearing away of material due to chemical reaction with another substance.

corrosion break

A type of break in wire rope that occurs when metal deteriorates, incurring a pitted surface. A wire with a corrosion break has an irregular surface with signs of deterioration.


A machine for lifting and moving extremely heavy loads. A crane provides both vertical and horizontal movement of heavy and oversized loads.


Pressing or squeezing with enough force to deform. Rope can be crushed from multilayer spooling.


A type of break that makes the wire appear "pinched" at the points where it is broken.


Weakening or diminishing of a substance.

diameter reduction

Reducing the thickness or width. Diameter reduction in a rope may indicate that the rope is unsafe for use.


A cylindrical object with flat ends that extend beyond the center's diamater. Drums are used to store and spool rope.


To be killed by electricity. Electrocution is one of the most common types of crane accidents.

extension ladder

A type of portable rung ladder that has two or more collapsible sections that allow it to be shortened or lengthened.

fatigue break

A type of break in wire rope caused by vibration, slapping, or bending the rope around a drum that is too small. Fatigue breaks are horizontal in orientation and ragged in shape.

frequent inspection

Inspections that occur at daily or monthly intervals depending on the degree of exposure to wear and deterioration and malfunction of critical components.


A force that resists motion between two objects that are in contact with each other. Smoother surfaces exhibit less friction, while rougher surfaces exhibit more friction.


Melting as a result of heat damage.


A linear, toothed blade used for cutting metal.

hand line

A rope or cord used to raise and lower objects by hand.

high stranding

A condition caused by kinking in which rope strands become loosened and lie higher on the rope than other strands.


A lifting device used to pick up loads with eyebolts attached. Hooks are usually used with chains, hoists, and slings.

initial inspection

The first inspection of a new or modified lifting device in which all critical components are examined.


A tight loop or twist in a rope. Rope must be handled carefully to avoid causing kinks.


Damage to wire rope caused by bending it sharply. Damage caused by kinking is permanent.


A structure made up of two long sides crossed by parallel rungs. Ladders are used for climbing up and down.

load rating

The maximum load for which a crane or hoist is designed. The load rating is determined by the manufacturer and displayed on the device.


An irregular, faulty, or abnormal structure.

multilayer spooling

Spooling on a drum in which the second layer of rope is spooled over the first layer. Multilayer spooling can compress or crush rope.

natural fiber rope

Rope made from material that comes from plants such as Manila, sisal, coir, and cotton.


A substance that does not burn, corrode, or destroy through chemical action.

non-self-supporting ladder

A ladder that must lean against a wall or other support

operational test

A test required by OSHA and performed prior to the initial use of a lifting device. The operational test ensures the main components and functions are safe and in compliance with OSHA standards.


Occupational Safety and Health Administration. A government agency dedicated to reducing injuries, illnesses, and deaths in the workplace.


A material's chemical reaction with oxygen. Oxidation causes rust and tarnish to form on metal surfaces, and prevents solder from bonding.

periodic inspection

Inspections that occur at monthly intervals depending on the degree of exposure to wear and deterioration and malfunction of critical components.

personal protective equipment

Safety equipment that workers wear or use to prevent injury in the workplace. Riggers should wear hard hats, gloves, and safety shoes for all rigging jobs.


A slender metal fastening.


An artificial material used for its strength and resistance to ultraviolet deterioration.


An artificial material that is tough, lightweight, rigid, and resistant to chemicals.

preventive maintenance

A program required by OSHA and based on the manufacturer's recommendations for adjustment and repair of the lifting device and components.

rated load test

A test required by OSHA and performed prior to the initial use of a lifting device to test the load rating determined by the manufacturer.


The process of lifting and moving heavy loads with ropes, chains, and mechanical devices.

rigging equipment

The hardware, tools, and machines used for moving loads.


Discoloration on metal as a result of oxidation.


A platform that riggers stand or sit on while performing work.


A method of forming an extremely strong connection to a wire rope by wrapping and tightening a wire around the rope.


A U-shaped piece of metal that is closed at the end with a pin or bolt.


A break at the end of a wire in which the wire appears to be sliced or "sheared" off at an angle.


Superficial burning.


A loop of material, which connects the load to the lifting device. Slings can be made of chain, wire, metal mesh, natural, and synthetic materials.


Fitting a socket to the end of a rope.


Lengthening or extending from force. Slings, ropes, and chains with signs of excessive stretching are not safe for use.

structural failure

Damage or deformity caused to an object as a result of the device being overloaded or forced to work beyond its maximum load-bearing capacity.

sun exposure

The condition of being exposed to radiation from the sun.

synthetic fiber rope

Rope made from artificially created substances such as nylon, polyester, polyethylene, and polypropylene.

tensile grade

A standardized measure of strength.

tension break

Typically caused by shock loading and show up as a cone shape on one end of the broken wire, and a cup shape on the other end.

throat opening

The open area near the point of the hook. A hook with excessive stretching in the throat opening is not safe for use.


Overturning or toppling over. Tipping is one of the most common types of crane accidents.


A force that causes rotation.


To unwrap the strands of rope.

valley break

A type of break that occurs when wire fractures in the "valley" between two strands. A valley break is a very serious type of damage, indicating that the rope is fatigued and susceptible to further breaks.


The erosion of material as a result of friction.

wire rope

Rope made from strands of steel or iron. Wire rope is used for jobs that require the rope to be extremely strong and resistant to abrasion.

working load

The maximum load that a piece of rigging equipment is designed to carry.

working load limit

The maximum load that can be applied to a piece of rigging equipment before the equipment fails.