Podcast
Questions and Answers
Aim the nozzle at the base of the flames, and discharge the ______.
Aim the nozzle at the base of the flames, and discharge the ______.
extinguisher
The NFPA hazard signal system uses a multicolored diamond to indicate ______ hazards.
The NFPA hazard signal system uses a multicolored diamond to indicate ______ hazards.
chemical
In the NFPA hazard signal system, a rating of 4 indicates an ______ hazard.
In the NFPA hazard signal system, a rating of 4 indicates an ______ hazard.
extreme
The color ______ represents health hazards in the NFPA hazard signal system.
The color ______ represents health hazards in the NFPA hazard signal system.
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The pin prevents accidental ______ of the fire extinguisher.
The pin prevents accidental ______ of the fire extinguisher.
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All contaminated clothing must be removed as drenching will only dilute the chemical absorbed by clothing, not wash it ______.
All contaminated clothing must be removed as drenching will only dilute the chemical absorbed by clothing, not wash it ______.
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In the event of a fire, evacuate the area, close all doors, call for help, and sound local ______.
In the event of a fire, evacuate the area, close all doors, call for help, and sound local ______.
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Class A fires involve ordinary combustibles such as paper, wood, and ______.
Class A fires involve ordinary combustibles such as paper, wood, and ______.
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To extinguish an open fire in the laboratory, use a FIRE ______.
To extinguish an open fire in the laboratory, use a FIRE ______.
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If clothing catches fire, the safety shower may be effective in drenching the ______.
If clothing catches fire, the safety shower may be effective in drenching the ______.
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Study Notes
Fire Safety Procedures
- Pin must be removed to discharge the fire extinguisher; it prevents accidental discharge.
- Aim at the base of flames using a sweeping side-to-side motion when discharging the extinguisher.
- In case of fire, evacuate, close doors, call for help, and sound alarms.
NFPA Hazard Signal System
- Multicolored diamond indicates chemical hazards in laboratory settings.
- Red signifies fire hazard; Blue indicates health hazard; Yellow denotes instability/reactivity; White is for special hazards (e.g., water reactivity, biohazard).
- Hazard severity is rated from 0 (no hazard) to 4 (extreme hazard).
Chemical Exposure and Clothing
- Contaminated clothing must be removed immediately; drenching only dilutes chemicals.
- Wash skin for up to fifteen minutes or until no chemical remains; seek medical attention.
Small Fire Management
- Small fires in containers can be extinguished by smothering with a watch glass or beaker; avoid using paper towels.
- A fire blanket can also be effective for small fires and for wrapping individuals with burning clothing.
Fire Classes and Extinguishers
- Class A (ordinary combustibles) uses water or dry chemical extinguishers.
- Class B (flammable liquids) uses dry chemical extinguishers.
- Class C (electrical equipment) also utilizes dry chemical extinguishers.
- Familiarize with types and locations of extinguishers in the lab.
Fire Extinguisher Operation
- For using a fire extinguisher, remove the pin and turn off cell phones before use.
- Ensure unauthorized experiments are avoided; lack of knowledge can lead to dangerous outcomes.
Laboratory Cleanliness
- Clean-up is required after each experiment and at the end of the lab session to minimize accidents.
- Ensure that the area around laboratory balances is clean before chemical handling.
- Report any clean-up infractions to instructors; it is everyone's responsibility.
Glassware and Equipment Cleaning
- Use available brushes and detergent for cleaning glassware; rinsing alone is insufficient.
- Clean and wipe down benches, ensuring all valves are turned off before leaving.
Safety Map Construction
- Create a safety map indicating laboratory layout, exits, fire extinguishers, and fire alarms.
- Clearly label each exit and the locations of safety equipment for easy identification during emergencies.
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Description
This quiz covers essential fire safety protocols and the NFPA hazard signal system, which is critical for identifying chemical hazards in a laboratory setting. Understand how to properly use a fire extinguisher and the importance of recognizing hazard signs to ensure safety during emergencies.
