Who is a Rigger: 21 Duties of a Rigger and Qualification

In the heart of every construction site, offshore platform, shipyard, or industrial facility, there is a skilled professional whose responsibility is often unseen but vital to safety and project success—the rigger. These professionals handle the complex tasks of lifting, moving, and securing heavy equipment with precision. But who is a rigger, and what are the duties of a rigger? These are some of the questions this article will answer.

In simple terms, a rigger is a trained specialist responsible for the safe movement of heavy loads using cranes, pulleys, hoists, and other lifting equipment. However, their role goes far beyond just handling ropes and hooks.

In this comprehensive guide, we will break down exactly who a rigger is, their key duties, and the qualifications needed to become one. Whether you’re an aspiring safety professional, a construction manager, or just someone exploring career options, this article will answer all your questions and more.

Who Is a Rigger?

A rigger is a trained and competent worker who prepares loads for lifting and ensures they are safely moved from one point to another using rigging equipment. This equipment may include slings, shackles, chains, wire ropes, and lifting beams, depending on the task.

Although the term “rigger” originated from the sailing world—where crew members rigged sails—today’s riggers play a pivotal role in construction, oil and gas, mining, maritime, telecommunications, and entertainment industries.

They collaborate closely with crane operators and signalers to ensure loads are lifted, transferred, and set down safely. Their expertise helps prevent dangerous accidents and protects both personnel and property.

Why Riggers Are Critical to Workplace Safety

Improper rigging is one of the leading causes of crane accidents, including dropped loads and equipment failures. According to OSHA, over 20% of all workplace fatalities in the construction sector involve lifting operations. Riggers mitigate this risk through planning, inspection, and communication.

A competent rigger reduces the likelihood of catastrophic events by:

  • Verifying load weights and center of gravity

  • Selecting appropriate lifting gear

  • Checking for damage or wear on rigging equipment

  • Ensuring compliance with lifting plans and safety regulations

They are an indispensable safety layer in high-risk environments.

Duties of a Rigger

Rigger

The role of a rigger is more technical than most people assume. Below are 21 key duties that define what riggers do daily:

1. Load Assessment

Riggers are responsible for calculating the weight, shape, center of gravity, and structural integrity of the object to be lifted. Without this, choosing the correct rigging gear is impossible.

2. Selecting Appropriate Rigging Gear

They choose slings, shackles, and lifting hardware that suit the job, based on factors like load type, lifting method, and environmental conditions.

3. Inspecting Rigging Equipment

Before each use, riggers inspect all lifting accessories for damage, corrosion, fraying, or fatigue. This helps prevent failures during lifting.

4. Attaching and Detaching Loads

They properly secure the load to the lifting device and ensure all attachments are done according to the lifting plan.

5. Reading Load Charts

Understanding and interpreting crane and load charts is crucial. Riggers must ensure that crane capacities are not exceeded.

6. Communicating with the Crane Operator

Through the use of hand signals, radios, or spotters, riggers direct crane operators, especially in blind lifts or tight workspaces.

7. Ensuring Balance and Stability

They make sure the load remains balanced during lifting to avoid swinging or tipping that could endanger workers or structures.

8. Verifying Sling Angles and Load Distribution

Incorrect sling angles increase tension and could cause failure. Riggers are trained to maintain the correct angle for safety.

9. Coordinating with Signal Persons

They often work in sync with qualified signalers during complex lifts, especially in areas where the crane operator has limited visibility.

10. Developing Lift Plans

Experienced riggers may assist in creating lift plans, which detail the lifting method, sequence, equipment, and personnel roles.

11. Implementing Safety Procedures

Riggers enforce lockout/tagout (LOTO) procedures, fall protection, and exclusion zones during lifting operations.

12. Guiding Suspended Loads

They use tag lines and guide ropes to manipulate loads safely and reduce uncontrolled swinging.

13. Disassembling Rigging Systems

After the lift is completed, riggers safely dismantle the rigging setup, inspecting components and storing them correctly.

14. Monitoring Environmental Conditions

Wind, rain, and surface conditions affect rigging operations. Riggers are trained to pause work if the weather poses risks.

15. Complying with Industry Standards

They ensure that all activities comply with OSHA, ANSI, and ASME standards for lifting and rigging.

16. Reporting Equipment Defects

Riggers promptly report defective or unsafe equipment to prevent its reuse and potential incidents.

17. Participating in Toolbox Talks and Safety Briefings

Before major lifts, riggers attend and sometimes lead pre-lift meetings, discussing hazards and controls.

18. Estimating Load Weight Without Documentation

When documentation is missing, experienced riggers may use engineering judgment and calculations to estimate weights.

19. Rigging for Specialized Lifts

This includes lifting fragile, hazardous, or oversized loads, which require advanced rigging skills and sometimes custom gear.

20. Supporting Emergency Response

In emergencies, such as collapsed structures or trapped equipment, riggers assist in careful recovery operations.

21. Maintaining Rigging Logs and Records

They document all lifts, inspections, and gear usage for auditing and legal compliance purposes.

What Are the Qualifications of a Rigger?

Not everyone can pick up a sling and call themselves a rigger. A qualified rigger typically needs a blend of training, experience, physical fitness, and sometimes certification, depending on the region and industry.

Below are the essential qualifications:

1. Education Requirements

  • No formal degree required, but a high school diploma or equivalent is often expected.

  • Courses in physics, mathematics, or mechanical engineering are beneficial.

2. Technical Training

Riggers often complete vocational or industry-specific training programs offered by:

  • NCCCO (National Commission for the Certification of Crane Operators) in the U.S.

  • CITB (Construction Industry Training Board) in the UK

  • OPITO and IRATA for offshore rigging and rope access

3. Certification (Where Required)

In the U.S., OSHA mandates that a rigger must be qualified when:

  • The load exceeds certain limits

  • Lifting is performed in hazardous conditions

  • The worker is hooking, unhooking, or guiding the load

Certification Example: NCCCO Rigger Level I and II

4. Physical Fitness

Riggers must be in good physical shape to:

  • Work at heights

  • Lift and carry heavy rigging gear

  • Endure long hours in harsh environments

5. Communication Skills

Being able to signal and communicate instructions with crane operators, engineers, and site managers is non-negotiable.

6. Experience

On-the-job experience under supervision is usually required to be considered competent. Many employers mandate 3-5 years of hands-on rigging experience.

7. Knowledge of Regulations and Standards

A good rigger must be familiar with:

  • OSHA 1926 Subpart CC

  • ASME B30 series standards

  • LOLER regulations (UK)

  • ISO 12480 for cranes and lifting operations

The Evolving Role of the Rigger in Modern Industry

While traditional rigging focused on mechanical loads, modern riggers are adapting to:

  • Robotic lifting equipment

  • 3D modeling for lift simulations

  • Remote-controlled hoisting systems

  • Smart rigging devices that monitor stress in real time

Riggers of the future may require digital literacy, data interpretation skills, and even VR-based training.

Risks Riggers Face and How They Are Mitigated

Riggers face numerous occupational hazards, including:

  • Dropped loads

  • Crushing injuries

  • Equipment failure

  • Fatigue

Mitigation strategies include:

  • Frequent equipment inspections

  • Lift planning and risk assessment

  • Strict exclusion zones

  • PPE enforcement (helmets, gloves, safety boots)

Conclusion: Who Is a Rigger and Why Their Role Matters

To summarize, a rigger is not just someone who ties knots or slings a load—they are highly skilled professionals trained to ensure the safe, precise movement of heavy and potentially dangerous equipment. They are the invisible hands behind every safe lift.

Their core duties and stringent qualifications underscore the complexity and responsibility of their work. Whether in construction, oil and gas, or logistics, the role of a rigger is vital for operational success and workforce safety.

Key Takeaways

  • A rigger is responsible for safe lifting and load handling using rigging tools.

  • Riggers must be qualified through training, certification, and experience.

  • Their duties range from planning and equipment selection to communication and emergency response.

  • Riggers are essential to workplace safety, reducing the risk of lifting-related injuries and accidents.

  • As industries evolve, riggers are expected to adapt with technological skills and a data-informed approach.

Frequently Asked Questions (FAQs)

What makes a person qualified to be a rigger?

A person must have adequate training, knowledge of rigging practices, and hands-on experience. Certification may be required depending on the industry and country.

What industries employ riggers?

Riggers work in construction, oil and gas, shipping, mining, manufacturing, aerospace, and entertainment (e.g., setting up stages).

Do riggers work at height?

Yes, especially in construction and offshore environments. They often use fall arrest systems and are trained in height safety.

If you’re considering a career in rigging or seeking to understand how vital these professionals are, this guide gives you the clearest, most human-centered breakdown of the rigging profession available today.

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