Hazard Recognition and Control Flashcards
7 cards from real CSS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Hazard Recognition and Control flashcards as text
During a pre-task safety meeting, a worker reports that a chemical drum label is missing. What is the supervisor's FIRST action?
Answer: Remove the drum from service until it is properly labeled
Under OSHA's Hazard Communication Standard (HazCom), unlabeled containers must be removed from use until they are properly identified and labeled.
Which tool is MOST commonly used to quantitatively assess the risk level of an identified hazard?
Answer: Risk matrix (probability × severity)
A risk matrix multiplies the likelihood of occurrence by the severity of harm to prioritize hazards for control.
A construction site supervisor observes workers trenching without a protective system in a 6-foot excavation. Which hazard category does this represent?
Answer: Cave-in/engulfment hazard
Unprotected excavations deeper than 5 feet create a cave-in and engulfment hazard, which is the leading cause of excavation fatalities.
What is the primary purpose of a Permit-Required Confined Space entry program?
Answer: To identify, control, and monitor hazards before and during entry
A permit-required confined space program systematically identifies atmospheric, engulfment, and configuration hazards and establishes controls before entry is authorized.
Which leading indicator would BEST help a safety supervisor identify hazard trends before an injury occurs?
Answer: Number of near-miss reports submitted
Near-miss reports are leading indicators that reveal existing hazards before they result in injuries, allowing proactive corrective action.
A worker reports a new piece of equipment vibrates excessively. What type of hazard should the safety supervisor evaluate?
Answer: Physical hazard — hand-arm or whole-body vibration
Excessive vibration transmitted through tools or equipment constitutes a physical hazard that can cause vibration-induced disorders such as hand-arm vibration syndrome (HAVS).
When substituting a less hazardous chemical for a more dangerous one, a safety supervisor is applying which control method?
Answer: Engineering control — substitution
Substitution is an engineering control that replaces a hazardous material or process with a less hazardous alternative.