Chapter 9.txt

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Chapter 9.txt
2015-07-13 21:55:56

strategies and tactics
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  1. What PSI IS THe minimal flow for the furthest sprinkler
    Often, a second-ary means of water supply is required. The flow must be able to provide a minimal residual water pressure of 15 pounds per square inch (psi) to the highest and farthest sprinkler head.
  2. When the alarm is electronic, water movement presses against a ________ that activates a switch to operate the alarm.
  3. There are four main types of sprinkler systems:
    • 1. Wet pipe systems
    • 2. Dry pipe systems
    • 3. Deluge systems
    • 4. Preaction systems
  4. According to statistics from the National Fire Pro-tection Association (NFPA), about______ of fires in sprinklered buildings are either extinguished by the sprinklers or held in check until they can be com-pletely extinguished by the fire department
    96 percent
  5. All sprinkler systems have some form of __________.
    main water control valve
  6. There are three common types of main water con-trol valve.
    outside screw and yoke (OS&Y)

    the post indicator valve (PIV).

    wall post indicator valve (WPIV).
  7. The most common type of a main control Value is
    the outside screw and yoke (OS&Y)
  8. Other common components of sprinkler systems include a pressure gauge and valving such as
    stop-cock valves, globe valves, check or clapper valves, automatic drain valves, and alarm test/inspector test valves
  9. Stopcock valves are for both ____________, likewise globe valves are used for system drainage and as _____ . These valves are manually operated, but unlike the main control valve, they are of the _______.
    • 1. system drainage and alarm silencing;
    • 2. test valves
    • 3. non-indicating type
  10. Automatic drain valves are used to drain the sprinkler system automatically once the ______________.
    pres-sure on the system has been relieved.
  11. the water flow alarm indicates water flow and is activated either _________ or ___________.
    hydraulically or electronically.
  12. Every sprinkler system must have a water supply that is ___________.
    reliable, automatic, and of adequate volume and pressure.
  13. An indication that a fire pump is present is a ______.
    test header
  14. A test header looks like a wall hydrant with multiple ________ that are used for ________.
    • 1. 2½-inch outlets
    • 2. testing the fire pump.
  15. In either case, there are _________ in the piping to ensure that through the FDC the domestic supply cannot be contaminated or ___________ and no harm could be caused to the gravity and/or pressure tanks.
    • 1. check valves
    • 2. back-pressured
  16. When the fire department connects to the FDC, it should ensure that the water supply for firefighting operations is taken from a source other than the one supplying __________.
    the building’s fire protection
  17. Difference between Wet & Dry sprinkler system
    A wet pipe sprinkler system constantly has water throughout the system. In contrast, a dry pipe sprinkler system has no water in the system beyond the check valve.
  18. Dry Pipe Sprinkler Systems replaces the water with ____ that is under pressure to keep water from entering the system until a sprinkler head is acti-vated. Only a ______ amount of air pressure is needed to hold the check valve closed.
    • 1. air
    • 2. minimal
  19. Dry pipe systems are typically used in buildings in which the water in the piping _____________capabil-ities or exposure of some of the piping to the outside elements.
    could freeze due to insufficient heating
  20. What is used to speed up the dry pipe system in delivering water onto the fire quicker ?
    accelerators or exhausters
  21. A preaction sprinkler system is basically set up the same as a _________ but incorporates separate additional alarm equipment.
    dry pipe system
  22. Preaction Sprinkler Systems typically used in locations where ______________.
    water damage must be prevented.
  23. A deluge system is typically used in locations where the occupancy is __________. In this system, the heads _________, and once the separate fire/smoke detection equipment is activated, the water begins to flow, discharging from ___________ at once.
    • 1. extra hazardous.
    • 2. are all open
    • 3. all of the open heads
  24. Standard  for the Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes.
    NFPA 13D
  25. When connecting to a FDC on a Residential Sprinkler System it is imperative that the sys-tem be pumped _______________.
    at whatever the standard domestic pressure is.
  26. Standpipe systems are divided into three class-es, each depending on the intended use of the system:
    • Class I
    • Class II
    • Class III
  27. Class I
    Class I is for use by fire departments and those trained in handling heavy fire streams
  28. Class II
    is for use primarily by building occu-pants Figure
  29. Class III
    Class III is for use by fire departments and those trained in handling heavy streams, or for use by the building occupant
  30. A Class I system must have a water supply adequate to flow _________ for at least ___ minutes.
    The supply must provide a minimum residual pressure of ____ at the highest/ farthest outlet while flowing the required ____.
    • 1. 500 gallons per minute (GPM)
    • 2. 30
    • 3. 65 psi
    • 4. 500 GPM
  31. In class I systems that require more than one standpipe ris-er, the system is still required to flow the 500 GPM for at least 30 minutes for the first standpipe in the system, and each additional standpipe must flow a minimum of ____ for at least__ minutes.

    Copyright | Jones & Bartlett Learning | Firefighting Strategies and Tactics | | Printed from Chegg iOS App
    • 1. 250 GPM
    • 2. 30
  32. Class II systems must have a water supply adequate to flow _____ for at least 30 minutes. This standpipe class must also be able to provide a minimum residual pressure of ___ at the highest/farthest outlet while at the same time flowing the required ___ GPM.
    • 1. 100 GPM
    • 2. 65 psi
    • 3. 100
  33. The Class III system must be capable of flowing the same required minimums as the___ system.
    Class I
  34. fire fighters must be aware of the possible pres-ence of pressure-reducing devices on standpipe systems. specifically in ____ system
    Class III
  35. Any system that has flow pressures of ____ psi or more should be tagged or marked to indicate the higher pressures.
  36. Standpipe systems can be either wet or dry sys-tems and are broken down into four types,
    1. A wet standpipe system that has water through-out the system at all times. When an outlet is opened, water immediately begins to flow.

    2. A dry standpipe system that is under no air pressure, much like a deluge-type sprinkler system. It must be activated by manual oper-ation of a valve at the beginning of the system or by a remote control located at each stand-pipe outlet.

    3. A dry standpipe system that is filled with air under pressure, much like a dry sprin-kler system. When a standpipe connection is opened, air is allowed to escape the system while water enters.

    4. A dry standpipe system that has no water supply. Water must be supplied by the fire department.
  37. The installation, maintenance, and minimum requirements of standpipe systems are covered within
    NFPA 14
  38. NFPA 14 mandates that stand-pipe systems be limited to a maximum height of ___ feet.
  39. When a structure is higher than the ___ limit, an additional zone or zones must be installed; however, no two zones are allowed to exceed a height of ___.
    • 1. 275-foot
    • 2. 550 feet
  40. Fire Department Connection Color Coding
    1. Red. 2. Green. 3. Silver. 4. Yellow
    • 1. StandPipe system
    • 2. Automatic Spinkler System
    • 3. Non- Automatic sprinkler system
    • 4. Combination sprinkler and standpipe system
  41. the most common special extinguishing system that fire fighters will encounter, in-cluding
    • * Carbon dioxide extinguishing systems
    • • Halogenated agent extinguishing systems
    • • Dry chemical extinguishing systems
    • •  Wet chemical extinguishing systems
  42. Extinguishers that are typically found in com-puter rooms, spray booths, areas of intricate electrical equipment, or areas of flammable liquid storage, to name a few locations are:
    The carbon dioxide and halogenated agent types of extinguishing systems
  43. A carbon dioxide system works by _____ the air in the room to ____.
    • diluting
    • displace oxygen
  44. Halogenated extinguishing agents, which are used in many of the same areas as carbon dioxide systems, work by interfering with and interrupting the _______ of fire.
    chemical chain reaction
  45. Dry chemical systems are used to control fires involv-ing _______________.
    flammable liquids, flammable gases, grease, and electrical equipment.
  46. Dry chemical systems work by interrupting the __________of fire.
    chemical chain reaction
  47. Wet chemical, or _____, extinguishing systems are used in many of the same locations as the dry chemical systems but have an added benefit. The wet chemical system has the extra ability of cooling and removing the fuel by coating it.
    Class K
  48. When Wet chemical, or class K is discharged on a fire and comes in contact with grease, fat, and the like, a soaplike substance is created. This process is called ________.
  49. NFPA 13E,
    Recommended Practice for Fire Department Operations in Properties Protected by Sprinkler and Standpipe Systems
  50. An SOG should include the following guidelines:
    • • Mandate that the first- or second-arriving engine company report directly to the FDC and prepare to support the system.
    • • Secure a water supply. This supply should not rob the system of its water supply.
    • • Maintain contact with interior crews and command to monitor when the system is to be charged.
    • • Initially develop and maintain a pump pres-sure of 150 psi. Depending on the system, such as a deluge-type sprinkler system or a multizone standpipe system in a high-rise, the pump pressure may need to be increased anywhere from 175 psi to 200 psi.
    • • Mandate that a minimum of two 2½-inch hose lines supply the sprinkler or standpipe system. When more than two hose lines are utilized, the pump pressure may also need to be increased from 175 psi to 200 psi.
    • • Mandate that a fire fighter be assigned to locate the main water control valve and ensure it is open. This fire fighter must stay assigned to the main control valve to ensure no one turns it off, and to turn it off when advised by the incident commander.
    • • Mandate that only the incident commander may order that the main water control valve be shut down.
  51. In general, a high-rise kit should be capable of flowing at least ____.
    250 GPM
  52. Equipment typically carried in a high-rise or standpipe pack:
    • • Minimum of 100 feet of 1¾-inch or 2-inch hose (more if long hallways are present) (Note that 2½-inch hose is preferred due to higher flow rates.)
    • •  Water thief or gated Y, either 2½ to 1½ inches or 2½ to 2 inches (depending on the size hose line being utilized)
    • • Correct sizes of spanner wrenches
    • • Pipe wrench
    • • Hand wheel for standpipe outlet
    • •  A nozzle (smooth-bore nozzle is preferred due to higher flow potential, lower pres-sure needed, and reduced chance of nozzle becoming clogged)
    • • Door wedges
    • • Typical hand tools and carried equipment such as hand lights and forcible entry tools