Questions and Answers
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.
chemical
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.
Signup and view all the answers
The pin prevents accidental ______ of the fire extinguisher.
Signup and view all the answers
All contaminated clothing must be removed as drenching will only dilute the chemical absorbed by clothing, not wash it ______.
Signup and view all the answers
In the event of a fire, evacuate the area, close all doors, call for help, and sound local ______.
Signup and view all the answers
Class A fires involve ordinary combustibles such as paper, wood, and ______.
Signup and view all the answers
To extinguish an open fire in the laboratory, use a FIRE ______.
Signup and view all the answers
If clothing catches fire, the safety shower may be effective in drenching the ______.
Signup and view all the answers
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.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
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.
