Podcast
Questions and Answers
What is the minimum height requirement for a toe board?
What is the minimum height requirement for a toe board?
- 5 inches
- 4 inches
- 3 ½ inches (correct)
- 2 inches
What is the maximum spacing allowed between vertical supports?
What is the maximum spacing allowed between vertical supports?
- 8 feet (correct)
- 10 feet
- 12 feet
- 6 feet
What is the required strength for the mid rail?
What is the required strength for the mid rail?
- 200 lbs
- 250 lbs
- 150 lbs (correct)
- 100 lbs
How often should a safety net be inspected?
How often should a safety net be inspected?
What is the minimum breaking strength required for connectors in a personal fall arrest system?
What is the minimum breaking strength required for connectors in a personal fall arrest system?
Which category of risks includes organisms like bacteria or viruses that could cause infection?
Which category of risks includes organisms like bacteria or viruses that could cause infection?
What is the unit used to measure the energy involved in potential accidents?
What is the unit used to measure the energy involved in potential accidents?
In the typical procedures of hazard control, what is the first step taken?
In the typical procedures of hazard control, what is the first step taken?
Which action is taken after identifying the energy sources in hazard control procedures?
Which action is taken after identifying the energy sources in hazard control procedures?
Why is it important to prioritize high-risk areas in hazard control?
Why is it important to prioritize high-risk areas in hazard control?
What is a type of struck-by hazard that involves objects that are not stationary?
What is a type of struck-by hazard that involves objects that are not stationary?
Which prevention method primarily focuses on the safety of the worker during hazardous activities?
Which prevention method primarily focuses on the safety of the worker during hazardous activities?
What is the main purpose of proper materials handling?
What is the main purpose of proper materials handling?
What is an essential component of work zone safety?
What is an essential component of work zone safety?
Which of the following is NOT a struck-by hazard type?
Which of the following is NOT a struck-by hazard type?
What role do physical barriers play in work zone safety?
What role do physical barriers play in work zone safety?
Which of the following actions is a recommended way to prevent struck-by accidents with heavy equipment?
Which of the following actions is a recommended way to prevent struck-by accidents with heavy equipment?
What method should you use to inspect rigging to prevent struck-by injuries?
What method should you use to inspect rigging to prevent struck-by injuries?
What is a potential hazard that could lead to electrocution?
What is a potential hazard that could lead to electrocution?
Which of the following is a recommended piece of Personal Protective Equipment (PPE) for preventing electrocution?
Which of the following is a recommended piece of Personal Protective Equipment (PPE) for preventing electrocution?
What condition should tools and cords be inspected for to prevent electrocution?
What condition should tools and cords be inspected for to prevent electrocution?
What does a Ground Fault Circuit Interrupter (GFCI) do?
What does a Ground Fault Circuit Interrupter (GFCI) do?
Which of the following must be done before electrical work can commence?
Which of the following must be done before electrical work can commence?
What is the significance of using hard hats when working around electrical lines?
What is the significance of using hard hats when working around electrical lines?
What action is vital to ensure electrical safety during maintenance work?
What action is vital to ensure electrical safety during maintenance work?
Which of the following is NOT a part of the prevention methods for electrocution?
Which of the following is NOT a part of the prevention methods for electrocution?
What percentage of total deaths in construction were attributed to the 'Fatal Four' hazards?
What percentage of total deaths in construction were attributed to the 'Fatal Four' hazards?
Which of the following is NOT a preventive measure for fall hazards?
Which of the following is NOT a preventive measure for fall hazards?
What is the required height for the top rail of a guardrail system?
What is the required height for the top rail of a guardrail system?
Which type of incident does not fall under the 'Fatal Four' hazards?
Which type of incident does not fall under the 'Fatal Four' hazards?
Among fall-related deaths, which height range resulted in the highest percentage of fatalities?
Among fall-related deaths, which height range resulted in the highest percentage of fatalities?
How much force must the top rail of a guardrail system withstand?
How much force must the top rail of a guardrail system withstand?
What source provided data on the total number of fatal falls between 2011 and 2015?
What source provided data on the total number of fatal falls between 2011 and 2015?
Which of the following is a typical hazard source for falls?
Which of the following is a typical hazard source for falls?
What was the percentage of fall deaths occurring from heights of 11-15 feet?
What was the percentage of fall deaths occurring from heights of 11-15 feet?
What was the primary cause of fatalities in the construction industry?
What was the primary cause of fatalities in the construction industry?
What percentage of fatal falls were less than 6 feet?
What percentage of fatal falls were less than 6 feet?
Which of these fall prevention systems is commonly used in construction sites?
Which of these fall prevention systems is commonly used in construction sites?
Which establishment size had the highest percentage of fall-related fatalities?
Which establishment size had the highest percentage of fall-related fatalities?
Which of the following safety techniques is part of the high-impact methods for preventing accidents?
Which of the following safety techniques is part of the high-impact methods for preventing accidents?
What percentage of falls occur from portable ladders in construction?
What percentage of falls occur from portable ladders in construction?
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Study Notes
Fatal Four Hazards
- Falls, Struck-By, Electrocution, and Caught-in-Between account for 57.7% of construction deaths
- This data is from OSHA 2016, representing 828 total deaths
Fall Hazards
- Unprotected sides, wall openings, floor holes, improper scaffold construction, and misuse of portable ladders are common fall hazards
- Fall prevention methods include Guardrail systems, Safety nets, and Personal fall arrest systems
- 23.8% of falls are attributed to ladders
- 33.3% are attributed to roofs
- Total of 1,533 deaths from falls between 2011-2015
Guardrail System Requirements
- Top rail height: 42 ± 3 inches above working level, withstanding 200 lbs of force
- Mid rail strength: 150 lbs of force
- Toe board height: 3.5 inches tall, withstanding 50 lbs of force
- Vertical spacing: No more than 8 feet apart
Safety Net Requirements
- As close as possible to the work surface
- Must be less than 30 feet below the work surface
- Mesh size: No larger than 6 by 6 inches
- Weekly inspection is mandatory
Personal Fall Arrest System Requirements
- Anchorage must support at least 5,000 lbs per worker
- Full-body harness is mandatory
- Connectors must have a minimum breaking strength of 5,000 lbs
Struck-By Hazards
- Falling objects, Flying objects, Swinging/Slipping Objects, and Rolling objects pose a threat
- Prevention methods include Personal Protective Equipment, Proper materials handling, and Work zone safety
Electrocution Hazards
- Improper grounding, Exposed electrical parts, Inadequate wiring, Damaged insulation, Overloaded circuit, Damaged tools and equipment, and Wet conditions cause hazards
Electrocution Prevention Methods
- Personal Protective Equipment: Rubber gloves, hard hats (rated for electrical uses), insulating clothes, multimeters
- Inspect tools and cords for cracks, damaged insulation, broken ground pins, frayed cords, loose parts
- Ground Fault Circuit Interrupters (GFCIs) are required on construction sites
- Lock-out/Tag-out procedure ensures electricity is off and locked out before work
Energy Wheel Overview
- Used to measure the potential severity of an uncontrolled release of energy (potential accident)
- Energy unit: Joule (J)
Energy Wheel Procedure
- Identify energy sources that could lead to accidents
- Estimate the potential impact of an accident based on energy magnitude
- Develop control measures to prevent accidental energy release or manage it safely
- Prioritize high-risk areas based on potential impact for efficient resource allocation
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