Chapter 13

1. Which type of foam system method extinguishes a fire by intervening between the fuel and the fire?

2. Which type of dry-chemical fixed application method introduces a concentration of agent into a closed area?

3. Which foam expansion rate is used primarily to extinguish fires involving liquid fuels?

4. Which type of fire extinguisher stores expellant gas and extinguishing agent in a single chamber?

5. The stage of foam formation that mixes water with foam liquid concentrate is:

6. Clearance between the bottom of the extinguisher and the floor should never be less than:

7. Which fire extinguisher agent extinguishes primarily through a smothering action?

8. Which type of dry powder agent is sodium chloride (salt) based?

9. The special-agent fire extinguishing system most effective on fires in commercial cooking equipment that produces grease-laden vapors is a:

10. Which of the following tasks regarding dry-chemical systems is an Inspector I MOST likely to be required to perform?

11. Which dry-chemical system component releases agent into the piping system?

12. Which foam proportioner allows for automatic proportioning over a wide range of flows and pressures and does not depend on an external power source?

13. What is the greatest concern for extinguisher reliability?

14. What percentage of finished foam is water?

15. When rapid fire extinguishment is required and reignition is unlikely:

16. The general category of fire extinguishing agents that effectively leaves no residue is a:

17. How are special-agent fire extinguishing systems classified?

18. Wet-chemical fire extinguishing agents are delivered to the hazard area in the form of a:

19. Which class of fire involves energized electrical equipment?

20. What is critical to total flooding applications of carbon dioxide (CO2) systems in order for them to be effective?

21. Which type of clean system agent is no longer produced but may still be in service?

22. Which fire extinguisher agent is subject to freezing if not kept in a heated area or an antifreeze agent added?

23. Which type of foam fire extinguishing system is wheel mounted and may have a water supply connection capability?

24. Which foam expansion rate is useful as a space-filling agent?

25. What is the biggest disadvantage to dry-chemical systems?

26. What is required for a special-agent extinguishing system to be considered successful?

27. The four elements necessary to produce high-quality fire fighting foam include foam concentrate, water, mechanical agitation, and:

28. Which foam proportioner is the most common type of built-in proportioner installed in mobile fire apparatus?

29. How are portable fire extinguishers classified?

30. The system used when water alone may not be an effective fire extinguishing agent is a: