Wet Sprinkler Systems - PowerPoint PPT Presentation

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Wet Sprinkler Systems

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Wet Sprinkler Systems Identifying components of, and inspection and testing procedures. Valve Test Schedule Inspection Procedures When performing a walk through ... – PowerPoint PPT presentation

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Title: Wet Sprinkler Systems


1
Wet Sprinkler Systems
  • Identifying components of, and inspection and
    testing procedures.

2
Wet sprinkler systems.
  • Sprinkler systems save lives and conserve
    property if they work the way they are designed
    and intended to work.
  • If they are not properly maintained and inspected
    they may not work the way you want them to when
    you want them to.
  • Being properly educated on these systems allows
    you to properly inspect and test them and also to
    verify that they have been properly inspected and
    tested.

3
Wet sprinkler systems.
  • A wet pipe sprinkler system has automatic
    sprinklers attached to pipes with water under
    pressure all the time.
  • When a sprinkler head is activated by heat this
    causes water to flow out of the sprinkler head
    and onto the fire.

4
Wet sprinkler systems
  • Our station is equipped with a wet sprinkler
    system that we are responsible for testing,
    otherwise we do not need to test sprinkler
    systems, but we do need to verify that they have
    been properly tested when we do our inspections
    as part of a building inspection. The actual
    testing of the system falls onto the owner of the
    building or there tenant if that is part of the
    contract they have worked out.

5
Terminal objective.
  • Given a lesson on proper testing and inspection
    procedures of wet sprinkler systems, the
    firefighter will explain the proper
    testing/inspection procedure of said system in
    accordance with the NFPA 25- Standard for the
    Inspection, Testing, and Maintenance of water
    based fire protection systems with 100 accuracy.

6
Enabling objective.
  • Given a review of wet sprinkler system components
    the firefighter shall identify the various
    components of a wet sprinkler system in
    accordance with Delmar Firefighters Handbook NY
    edition with 100 accuracy.

7
Previous assignment
  • You should have read pages 314-329 in the
    firefighters handbook on protective systems to
    re-familiarize yourself with the components of a
    sprinkler system.

8
Safety Information.
  • If you are working with overhead obstructions or
    any particulars when checking sprinkler systems
    Hardhats, safety glasses, and gloves should be
    worn.
  • If you are using a ladder to check higher level
    components proper safety procedures for ladders
    should be followed.

9
Safety Information
  • Watch out for wet floors around sprinkler systems
    whether it be because of leaks or from testing
    procedures.
  • If you must turn a valve that is difficult to
    turn get someone to help you turn it so that you
    dont injure yourself.

10
  • Today we are going to go over the components of a
    wet sprinkler system and proper testing and
    inspection procedures of said system.

11
System Overview
12
Water Supply to System
Butterfly style control valve with tamper switch.
Water Supply
13
Sprinkler Control Valve
Sprinkler Control Valve. OSY with tamper switch.
http//www.vfpfire.com/projects/images/shemya-isla
nd/wet-system.jpg
14
Sprinkler Valve.
Sprinkler valve or wet valve.
www.vanguardfire.com/images/stories/sprinkler/spri
nkler_wet_valve.jpg
15
Sprinkler Valve operation
16
Fire Department Connection
Internal Siamese valve.
17
Pressure Gauges
System Pressure Gauge
Supply Pressure Gauge
http//www.vfpfire.com/projects/images/shemya-isla
nd/wet-system.jpg
18
Retard Chamber, Pressure Switch
Pressure Switch
Retard Chamber
http//farm5.static.flickr.com/4068/4387390289_6af
378b10f_m.jpg
19
Water Motor Gong
Water Gong Bell
Sprinkler System Drain
20
Water Motor Gong
Pressure switch
Water Motor
Gong Bell
Retard Chamber
http//www.lifetechfire.co.uk/products/sprinklers/
wetalarm_pic.jpg
21
Sprinkler Riser
Sprinkler Riser
http//farm5.static.flickr.com/4068/4387390289_6af
378b10f_m.jpg
22
Flow Switch
http//www.viking-uk.com/Viking_img/brochure/p32_r
isermanifold_1.jpg
http//www.firesense.com.au/images/flow_switch.jpg
23
Sprinkler heads
24
Sprinkler Heads
http//www.vikinggroupinc.com/databook/sprinklers/
standard/sr/stcov/080106.pdf
25
Inspectors Tests
http//www.reliablesprinkler.com/pdfs/products/AGF
TESTDrain.pdf
26
Sprinkler System Activation
27
  • Those are the various components of a wet
    sprinkler system and their purpose and operation
    during a system activation.

28
Inspection Procedures
  • When you do a building inspection you want to
    check several things on a sprinkler system
  • Check to make sure the building owner has
    inspection records showing they conform with NFPA
    25.
  • Table 5.1 refers to sprinkler system components
    inspection and testing Schedule.
  • Table 13.1 refers to valves and valve components
    inspection and testing schedule.

29
(No Transcript)
30
Sprinkler Inspection Schedule
31
Sprinkler Test Schedule
32
Valve Inspection Schedule
33
Valve Inspection Schedule Cont.
34
Valve Test Schedule
35
Inspection Procedures
  • When performing a walk through inspection check
    the following things.
  • Outside valve is open and locked if there is one.
  • FDC Clean and usable?
  • Inside control valve is open and secured. (if
    valves are not secured do they have tamper
    switches)
  • Pressure gauges in good condition and reading the
    same?
  • Hydraulic nameplate present?

36
Inspection Procedures
  • Continued
  • Check all valves, connections, piping and heads
    to see that they are free of damage.
  • If sprinkler head is bulb type check to see that
    fluid is still in bulb
  • Minimum distance from head to storage 18.
  • Check the wall box to make sure enough spare
    sprinklers are present.

37
Testing Procedures
  • When testing the system follow the NFPA 25
    Schedules on table 5.1 and 13.1 for testing
    sprinkler components and valves.
  • Mechanical water flow (water gong) devices shall
    be tested quarterly.
  • Vane type (flow switch) and pressure switch type
    shall be tested semiannually
  • These tests shall be performed by opening the
    inspectors test connection.

38
Testing Procedures
  • Continued
  • Main drain tested annually be sure to record the
    static and residual pressures on the system.
  • Control valves operated annually and are in
    proper position?
  • Control valve tamper switch alarms received? Test
    semiannually.

39
Quiz Time
  • Take 15 minutes to take quiz then hand in to me
    when completed.

40
Terminal Objective.
  • Given a lesson on proper testing and inspection
    procedures of wet sprinkler systems, the
    firefighter will explain the proper
    testing/inspection procedure of said system in
    accordance with the NFPA 25- Standard for the
    Inspection, Testing, and Maintenance of water
    based fire protection systems with 100 accuracy.

41
Enabling Objective.
  • Given a review of wet sprinkler system components
    the firefighter shall identify the various
    components of a wet sprinkler system in
    accordance with Delmar Firefighters Handbook NY
    edition with 100 accuracy.

42
Summary
  • You should now know the various components of a
    wet sprinkler system and the proper procedure to
    inspect and test those components. This should
    make it much easier to inspect and determine
    problems with such systems.

43
Assignment
  • Perform an inspection of the sprinkler system in
    the station with your shift officer observing as
    you tell them what you are doing.
  • Perform a full test of the sprinkler system with
    your shift officer observing to verify proper
    testing.

44
Thank You All
  • Thank you all for coming and learning about
    sprinklers.
  • Hopefully some of what I showed you today will
    assist you with your work involving sprinkler
    systems.
  • I will be available after completion to answer
    any questions you might have.
  • BE SAFE!!
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