FIRE PROTECTION SYSTEM EXAM QUESTIONS AND ANSWERS(DIAGRAMS INCLUDED).

Passive fire protection In building involves constructing walls, floors, ceilings, beams, columns and shaft enclosures so that they can resist, control, and contain the damaging effects of a fire. Active Fire Protection System Systems include standpipe and sprinkler designed to detect, extinguish/ suppress the fire outright or control the fire by delaying its damaging effects. Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:00 / 0:15 Full screen Dry Standpipe System Fire sprinkler system in which pipes are fixed in the building and filled with compressed air. They are not filled with water (by the fire department) until needed, which makes this a good system for areas subject to freezing. Dry standpipe with automatic Dry pipe valve No water under normal conditions • With pressurized air • Dry pipe valve is designed to open when there is air pressure drop in the system • Water comes in via public utility connection (FDC) Dry Standpipe with Manual Control Valve No water under normal conditions Water enters after opening of manual valve Water comes via public utility connection (FDC) Dry Standpipe with no Permanent Water Supply Water is pumped into the system by the fire department Most common Wet Standpipe System A standpipe system having piping containing water at all times. Wet Standpipe System with Siamese Connection - FPS with readily available water and with connection outside Combination Standpipe System Both dry and wet standpipes are integrated in the building with separate fireman's connection outside the building, minimum 150 mm diameter. A. wet-pipe ASS The most common Automatic Sprinkler System. a. wet-pipe ASS b. Dry-pipe ASS c. Deluge ASS d. Pre-action ASS c. Nitrogen A dry pipe ASS have pipes filled with compressed air or __________. a. Carbon dioxide b. Halogen c. Nitrogen d. Argon c. deluge This Automatic Sprinkler System is generally installed in hazardous areas where extremely rapid fire spread is anticipated and that requires immediate application of water. a. wet-pipe b. dry-pipe c. deluge d. pre-action a. upright Identify the type of sprinkler head on the right. a. upright b. pendent c. concealed d. side-wall b. 55.2 kPa The minimum Pressure maintained if the highest fixture in the system is a water closet, flush tank. a. 103.4 kPa b. 55.2 kPa c. 85.3 kPa d. 92.7 kPa Wet-Pipe Automatic SS Have a pressurized water in the pipes and mains. water is release when the sprinkler head is activated; mostly commonly used today. Dry-standpipe Automatic SS These have pipes filled with compressed air or "nitrogen" nitrogen". The pressure in these lines is slightly above the water pressure, and this pressure difference is what keeps the water out of the sprinkler heads. Pre-action Automatic Sprinkler System These are similar to dry pipe except that the water first fills the pipe as an alarm is set off, providing an opportunity to extinguish the fire manually before the sprinkler is open. Water is stopped at feeders (in walls before the pipes supplying the sprinkler heads) by a valve.