Safety & Infection Control Flashcards
7 cards from real CLT 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 & Infection Control flashcards as text
Which chemical hazard class requires storage in a flammable-rated, grounded storage cabinet away from oxidizers?
Answer: Flammable solvents
Flammable solvents must be stored in grounded, explosion-proof flammable storage cabinets and segregated from oxidizers to prevent fire or explosion.
What is the primary purpose of a safety shower in the laboratory?
Answer: To drench the body for at least 15 minutes after large-area chemical contact
Safety showers deliver a large volume of water to flush the body for a minimum of 15 minutes following significant chemical or caustic splashes to the body.
In a laboratory using radioactive isotopes, which type of shielding material is most appropriate for protection against beta radiation?
Answer: Lucite (acrylic) or plastic shields
Lucite or plastic shields are preferred for beta radiation because dense materials like lead can produce secondary bremsstrahlung X-rays when struck by beta particles.
A patient's chart indicates they are on airborne precautions. When collecting a specimen from this patient, the laboratory phlebotomist should wear:
Answer: N95 or higher respirator, gown, gloves, and eye protection
Airborne precautions require an N95 respirator (or higher), along with gown, gloves, and eye protection to protect against pathogens spread via small airborne particles.
What is the recommended action if a fire is too large to be controlled with a portable extinguisher?
Answer: Activate the fire alarm, evacuate, and call emergency services
If a fire cannot be extinguished with one portable extinguisher, personnel should activate the alarm, evacuate the area, and call emergency services (911).
Which of the following laboratory practices BEST reduces the risk of chemical cross-contamination between reagents?
Answer: Using dedicated pipettes or dispensers for each reagent and never pouring unused reagent back
Using dedicated dispensing equipment and never returning unused reagent to its original container prevents cross-contamination that could compromise test accuracy and create hazardous reactions.
Which of the following is the correct sequence when doffing (removing) PPE after working with a biohazardous specimen?
Answer: Gloves, eye protection, gown, mask/respirator, then hand hygiene
The CDC recommends removing gloves first (most contaminated), followed by eye protection, gown, and mask/respirator last, with hand hygiene performed after each step and at the end.