Free NCCER Basic Safety Test 3 — Questions and Answers
Question 1: Benching systems cannot be used in _____.
- Type A soils
- Type B soils
- Type C soils (Correct answer)
- solid rock
Correct answer: Type C soils
Benching systems cannot be used in Type C soils because these soils are cohesive, granular, and have a very low unconfined compressive strength, making them highly unstable. Benching requires stable soil conditions to create safe, stepped excavations. For Type C soils, shoring or sloping at a much flatter angle is typically required to prevent trench collapse and ensure worker safety.
Question 2: Safety _________.
- is a learned behavior and attitude (Correct answer)
- primarily depends on workers in the field
- comes naturally to most individuals
- does not normally need to be trained
Correct answer: is a learned behavior and attitude
Safety is fundamentally a learned behavior and attitude, not something that comes naturally. It requires training, awareness, adherence to procedures, and a proactive mindset from all individuals in a workplace. Developing a strong safety culture involves continuous education and reinforcement of safe practices to prevent accidents.
Question 3: The activity that consists of breaking a job into its component tasks and then analyzing each step for potential hazards is called a _____.
- hazardous incident simulation
- safety pre-assessment
- job safety analysis (Correct answer)
- safety breakdown structure
Correct answer: job safety analysis
The activity that consists of breaking a job into its component tasks and then analyzing each step for potential hazards is called a job safety analysis (JSA). A JSA identifies hazards, assesses risks, and determines the safest way to perform each task. This systematic approach helps prevent accidents and injuries by proactively addressing potential dangers before work begins.
Question 4: Which of the following is life-threatening?
- Heat stroke (Correct answer)
- Frostbite
- Heat cramps
- Heavy sweating
Correct answer: Heat stroke
Heat stroke is a life-threatening medical emergency caused by prolonged exposure to high temperatures, resulting in the body's inability to regulate its temperature. Unlike heat cramps or heavy sweating, which are less severe heat-related illnesses, heat stroke can lead to organ damage, brain damage, or death if not treated immediately. It requires urgent medical attention.
Question 5: Charred sections of a welding hose close to the torch may be caused by _____.
- flash burn
- flare-up
- slag
- flashback (Correct answer)
Correct answer: flashback
Charred sections of a welding hose close to the torch are often caused by a flashback. A flashback occurs when the flame burns back into the torch, hose, or even the regulator, which can be extremely dangerous and cause damage or explosions. Flashback arrestors are safety devices designed to prevent this from happening and protect the welder.
Question 6: A person who is capable of identifying existing and predictable hazards and has authorization to take prompt corrective measures to eliminate such hazards is a _____ person.
- competent (Correct answer)
- proficient
- eligible
- qualified
Correct answer: competent
A 'competent person' is defined by OSHA as someone capable of identifying existing and predictable hazards in the surroundings or working conditions which are unsanitary, hazardous, or dangerous to employees, and who has authorization to take prompt corrective measures to eliminate them. This designation is crucial in construction and other industries for ensuring on-site safety and compliance.
Question 7: When stepping off a ladder onto a platform or roof, the top of the ladder should extend above the point where the ladder touches the platform or roof by at least _____.
- 2 feet
- 5 feet
- 4 feet
- 3 feet (Correct answer)
Correct answer: 3 feet
When stepping off a ladder onto a platform or roof, the top of the ladder should extend at least 3 feet above the landing surface. This extension provides a secure handhold for workers as they transition on and off the ladder, significantly improving stability and preventing falls. It is a critical safety requirement for ladder use to ensure safe access and egress.
Question 8: The D-ring or support point on a safety harness should be placed _____.
- over your rib cage
- in the middle of your back
- around your waist
- between your shoulder blades (Correct answer)
Correct answer: between your shoulder blades
The D-ring or support point on a safety harness should be placed between your shoulder blades. This positioning ensures that if a fall occurs, the force is distributed safely across the body, minimizing injury and keeping the worker upright. Incorrect D-ring placement can lead to severe injuries or make rescue difficult, compromising the effectiveness of the fall arrest system.
Question 9: When everyone in the company understands the value of a safe work environment, _____.
- labor costs increase
- productivity declines
- a safety culture is created (Correct answer)
- the experience modification rate increases
Correct answer: a safety culture is created
When everyone in the company understands and values a safe work environment, a strong safety culture is created. A safety culture is an organizational atmosphere where safety is a top priority, integrated into all aspects of work, and shared by all employees. This leads to fewer accidents, increased productivity, and improved morale, benefiting the entire organization.
Question 10: Employers are required to report fatalities and catastrophes to OSHA within _____ hours.
- 12
- 24
- 8 (Correct answer)
- 4
Correct answer: 8
Employers are required by OSHA to report all fatalities and catastrophes (hospitalizations of three or more employees) to OSHA within 8 hours. This prompt reporting allows OSHA to investigate serious incidents quickly, identify hazards, and prevent similar occurrences in the future. Failure to report within this timeframe can result in penalties and hinder safety improvements.
Question 11: A system that protects workers from hazardous energy while they work with machines and equipment is referred to as _____.
- a barricade system
- lockout/tagout (Correct answer)
- a disconnect
- an energy-neutral system
Correct answer: lockout/tagout
Lockout/tagout (LOTO) is a safety procedure used to ensure that dangerous machines are properly shut off and not able to be started up again prior to the completion of maintenance or servicing work. It protects workers from hazardous energy by physically locking and tagging energy-isolating devices, preventing accidental energization or release of stored energy. This system is critical for preventing serious injuries or fatalities during machine servicing.
Free NCCER Basic Safety Test 3
Benching systems cannot be used in _____.