OSHA 10 Study Guide | Module 4 | Cranes and Rigging | Construction Training | OSHA 10 exam

Summary

In this educational video, Module 4 delves into the fundamentals of cranes and rigging, crucial for workers handling cranes, derricks, hoists, and aerial lifts. It covers OSHA standards, including safety inspections, operator certifications, and equipment maintenance. Key terms like 'boom angle indicator' and 'load rating' are explained. The video emphasizes the importance of adhering to safety protocols to prevent accidents, with a focus on proper crane operation and maintenance to ensure worker safety.

Takeaways

• 📚 Module 4 focuses on the basics of cranes and rigging, including cranes, derricks, hoists, aerial lifts, and conveyors, as outlined in OSHA 29 CFR 1926.550 subpart N.
• 🔧 Key terms such as 'boom', 'hook', 'wire ropes', and 'rigging' are essential for understanding crane operations and safety.
• ⚠️ Employers must ensure that a competent person inspects all machinery and equipment for safe operation before and during use.
• 🔄 Mechanical failures, though only 11% of crane accidents, often lead to significant incidents due to a lack of preventive maintenance or adequate training.
• 🏗️ Crane operators must be aware of the load limits and verify lift calculations to ensure the load is within the crane's load rating.
• 🚫 Employees should stay out of the crane's swing radius for safety, and barricades should be used to prevent access to the swing area.
• 📏 A thorough annual inspection and documentation of hoisting machinery are required by OSHA standards, along with visual inspections before and during each shift.
• 📊 Cranes must have a load rating chart that is clearly visible to the operator to prevent accidents.
• 👷‍♂️ Qualified engineers or competent persons in structural design must design the suspension system and personnel platform.
• ⛈ Cranes should not hoist personnel in bad weather or if any danger is present, ensuring safety is a priority.

Q & A

What is the main focus of Module 4 in the provided transcript?

Module 4 focuses on the basics of cranes and rigging, covering topics like cranes, derricks, hoists, aerial lifts, and conveyors, as well as adhering to OSHA 29 CFR 1926.550 subpart N.

What are the key terms introduced in the script related to cranes and rigging?

Key terms include accident, act, block sheaves, boom, boom angle indicator, boom stops, brake, counterweight, crane, deck, drum, hoist, jib, outriggers, PCSA, pendant, radius, and superstructure.

According to the script, what is the role of a competent person in crane operations?

A competent person is responsible for inspecting all machinery and equipment before and during use to ensure they are within safe working parameters, and to carry out a thorough annual inspection and document hoisting machinery.

What does OSHA's analysis of crane accidents reveal about the frequency and causes?

OSHA's analysis reveals an average of 71 fatalities per year due to crane accidents, with nearly 30% of work-related electrocutions involving cranes, and mechanical failures accounting for only 11% of the causes.

What are the responsibilities of crane operators as outlined in the script?

Crane operators must know the load limits of the crane, verify lift calculations, ensure the load is within the load rating, and stay within the crane's swing radius to ensure safety.

What is the significance of a load rating chart in crane operations?

A load rating chart is significant as it provides the crane's capacity and limitations of use, which must be adhered to ensure safety and prevent accidents.

Why is it important for cranes and derricks to have a boom angle indicator?

A boom angle indicator is important because it allows operators to easily see and control the angle of the boom, which is crucial for preventing accidents and ensuring the crane's stability.

What are the conditions under which wire ropes should not be used in crane operations?

Wire ropes should not be used if there are six randomly distributed broken wires in one lay, three broken wires in one strand, 1/3 of the original diameter of outside individual wires is lost, or if there is evidence of heat damage, kinking, crushing, bird caging, or any other damage resulting in distortion of the rope structure.

What precautions should be taken when hoisting personnel with a crane?

When hoisting personnel, it is crucial to ensure the crane's rated load does not exceed the original capacity, use a suspension system and personnel platform designed by a qualified engineer, and only allow a qualified welder to perform welding on the personnel platform.

What should employees do if they are hoisted in a crane and a dangerous situation arises?

If a dangerous situation arises while employees are hoisted, they should be grounded immediately and safely to prevent accidents.