Safety Protocols & Hazard Management Flashcards
7 cards from real CPT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Safety Protocols & Hazard Management flashcards as text
What is the 'bowtie' model used for in process safety risk management?
Answer: Visualizing causes on one side and consequences on the other, with the hazardous event in the center
The bowtie diagram shows threats leading to a hazardous event (left side), barriers, and then consequences (right side), making risk controls visible.
Which condition defines an 'Immediately Dangerous to Life or Health' (IDLH) atmosphere?
Answer: Any condition that poses an immediate threat to life, health, or the ability to escape
IDLH is defined by NIOSH as any atmosphere that poses an immediate threat to life or could cause irreversible health effects or impair escape.
During an emergency evacuation drill, the assembly point muster count shows one worker unaccounted for. What action is taken?
Answer: Report the discrepancy to the incident commander; do not re-enter until authorized
Any discrepancy must be reported to the incident commander who manages search and re-entry decisions to prevent additional casualties.
What is the lower explosive limit (LEL) concept used for when monitoring for flammable gas hazards?
Answer: The minimum concentration of gas in air below which ignition cannot occur
Below the LEL, the mixture is too lean to ignite; work areas are typically kept below 10% of the LEL as a safety margin.
A Management of Change (MOC) review is required when which of the following occurs at a PSM-covered facility?
Answer: Any change to process chemistry, equipment, procedures, or operating conditions outside established limits
MOC applies to all changes except 'replacement in kind'; even temporary deviations in operating parameters require a formal review.
Which type of chemical storage incompatibility is most dangerous when oxidizers are stored near flammable materials?
Answer: Oxidizers can accelerate combustion and dramatically intensify a fire
Oxidizers supply oxygen to a fire, making it burn faster and hotter and potentially causing materials that do not normally burn to ignite.
What is the primary function of a Safety Instrumented System (SIS) in a process plant?
Answer: To bring a process to a safe state when predetermined conditions are exceeded
An SIS detects abnormal conditions and automatically takes protective actions, such as shutting down equipment, to prevent injury or damage.