STSC Hazard Recognition and Risk Assessment 1 — Questions and Answers
Question 1: What is the first step in hazard recognition on a construction site?
- Evaluating existing safety procedures
- Identifying potential hazards (Correct answer)
- Developing a safety plan
- Training employees on safety protocols
Correct answer: Identifying potential hazards
Identifying potential hazards is the crucial first step in any safety process on a construction site. Before any evaluation, planning, or training can effectively take place, workers and supervisors must actively recognize and acknowledge the dangers present in the work environment. This foundational step ensures that all risks are known and can be addressed proactively.
Question 2: Which of the following is an example of a physical hazard commonly found on construction sites?
- Noise exposure
- Electrical wiring
- Asbestos exposure
- Falling objects (Correct answer)
Correct answer: Falling objects
Physical hazards are environmental factors that can cause harm without direct chemical or biological interaction. Falling objects directly pose a risk of impact injury due to gravity, making them a clear example of a physical hazard on a construction site. While noise, electrical wiring, and asbestos are also hazards, noise is a physical agent, electrical wiring is an energy hazard, and asbestos is a chemical/biological hazard.
Question 3: When performing a risk assessment, what is the primary factor to consider when evaluating the severity of a hazard?
- The number of workers involved
- The potential consequences of the hazard (Correct answer)
- The cost of mitigation
- The duration of the project
Correct answer: The potential consequences of the hazard
When evaluating the severity of a hazard in a risk assessment, the primary focus is on the potential harm or damage it could cause. This includes considering the type and extent of injury, illness, or property damage that might result if the hazard were to lead to an incident. Understanding these consequences is crucial for prioritizing risks and determining appropriate control measures.
Question 4: What is a common method for controlling the risks associated with a hazardous task on a construction site?
- Ignoring the hazard until it becomes more evident
- Using personal protective equipment (PPE) (Correct answer)
- Reducing the workforce on-site
- Increasing the number of work shifts
Correct answer: Using personal protective equipment (PPE)
Personal Protective Equipment (PPE) is a common and essential method for controlling risks on construction sites, especially when other control measures cannot fully eliminate a hazard. PPE, such as hard hats, safety glasses, gloves, and high-visibility vests, provides a barrier between the worker and the hazard, reducing the likelihood of injury. It is typically used as the last line of defense in the hierarchy of controls.
Question 5: Which of the following best describes a "risk matrix" used during a risk assessment on a construction site?
- A list of all the workers' names
- A chart to evaluate hazards based on their likelihood and severity (Correct answer)
- A breakdown of the project budget
- A summary of OSHA regulations
Correct answer: A chart to evaluate hazards based on their likelihood and severity
A risk matrix is a fundamental tool used in risk assessment to systematically evaluate and prioritize identified hazards. It typically plots the likelihood (probability) of a hazard occurring against the severity (consequence) of its impact. This visual representation helps safety professionals determine which risks require immediate attention and the most robust control measures.
STSC Hazard Recognition and Risk Assessment 1
What is the first step in hazard recognition on a construction site?