#1
Which of the following is a common hazard in confined spaces?
Limited visibility
ExplanationConfined spaces often have poor visibility, increasing the risk of accidents.
#2
What should be done before entering a confined space?
Obtain permission and assess risks
ExplanationPrior authorization and risk assessment are crucial to ensure safety before entry.
#3
What is the main purpose of a confined space entry permit?
To authorize entry and outline safety measures
ExplanationThe permit grants permission for entry and details necessary safety precautions.
#4
What is a common method for testing the atmosphere of a confined space?
Sampling and analysis
ExplanationSampling and analyzing the air helps detect hazardous gases and assess air quality.
#5
What is the primary purpose of a confined space safety monitor?
To monitor atmospheric conditions and alert of hazards
ExplanationSafety monitors continuously assess air quality and warn of potential dangers.
#6
Which of the following is NOT a typical confined space hazard?
Adequate lighting
ExplanationAdequate lighting is beneficial and not a hazard in confined spaces.
#7
What is the most common method of ventilation used in confined spaces?
Mechanical ventilation
ExplanationMechanical systems are frequently employed to circulate fresh air in confined spaces.
#8
What is the maximum allowable concentration of a hazardous substance in the air, typically specified in confined space regulations?
Threshold Limit Value (TLV)
ExplanationTLV sets the maximum concentration of harmful substances permissible in the air to ensure worker safety.
#9
In a confined space rescue, what is the first priority?
Assess the situation and ensure rescuer safety
ExplanationPrioritizing assessment and rescuer safety lays the foundation for a successful rescue operation.
#10
Which of the following is a key consideration when selecting a rescue harness for confined space rescue?
Comfort and fit of the harness
ExplanationComfort and fit ensure the harness facilitates effective rescue operations without causing discomfort or hindrance.
#11
What is the purpose of conducting a thorough risk assessment before entering a confined space?
To identify potential hazards and implement control measures
ExplanationRisk assessment helps in recognizing dangers and devising strategies to mitigate them.
#12
What is the primary purpose of a tripod used in confined space rescue?
To anchor rescue systems and provide stability
ExplanationTripods serve as stable anchors for rescue equipment and personnel in confined spaces.
#13
Which of the following actions is NOT recommended during confined space rescue operations?
Working alone
ExplanationWorking alone increases the risk and complexity of rescue operations in confined spaces.
#14
What is the primary objective of a confined space rescue plan?
To ensure the safe and timely rescue of entrants
ExplanationRescue plans aim to swiftly and safely extricate individuals from confined spaces in emergencies.