Domain 2.0: Compliance and Operational Security

29. When monitoring the HVAC system, overcooling causes condensation on equipment, and too-dry environments lead to excessive static.

30. A wet-pipe fire-suppression system is the one that most people think of when discussing an indoor sprinkler system.

31. Dry-pipe systems work in exactly the same fashion as wet-pipe systems, except that the pipes are filled with pressurized air rather than water.

32. The following are fire classes and suppression remedies:

• For Class A fires (trash, wood, and paper), water decreases the fire’s temperature and extinguishes its flames.

• Foam is usually used to extinguish Class B fires, which are fueled by flammable liquids, gases, and greases.

• Class C fires (energized electrical equipment, electrical fires, and burning wires) are put out using extinguishers based on carbon dioxide.