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Introduction To Sprinkler Systems > Sprinkler Course Midterm > Flashcards

Sprinkler Course Midterm Flashcards

1
Q

NFPA 13 is the standard for what?

A

standard for the Installation of Sprinkler Systems

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2
Q

NFPA 25 is the standard for what?

A

standard for the Inspection, Testing an Maintenance of water-based fire protection systems

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3
Q

3 kinds of relevant legislation include

A

OBC, OFC, NFPA

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4
Q

We use the OBC for?

A

the installation of fire systems in Ontario

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5
Q

We use the OFC for?

A

the installation (deficiency repair), inspection an maintenance of fire systems in Ontario

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6
Q

We use NFPA for?

A

NFPA provides the minimum requirements for the Design and Installation of automatic fire sprinkles

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7
Q

Wet Sprinkler systems…

A

It uses automatic heads suited for areas with constant heating, the system is filled with water and connected to a water supply, immediate discharge when activated

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8
Q

Dry Sprinkler systems…

A

It uses automatic heads suited for areas that are not constantly heated, System is pressurized with air or nitrogen, when tripped the system releases air forcing the clapper open and permits water flow (delayed discharge)

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9
Q

Pre-Action Sprinkler systems…

A

It uses automatic sprinkler heads suited for areas where accidental water discharge is undesirable, these systems protect water-sensitive areas and may or may not be filled with air under pressure

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10
Q

Deluge Sprinkler systems…

A

It uses open sprinkler heads, upon activation of a fire alarm device or by the manual pull release attached to the system the valve opens and water is flown and discharged through all sprinkler heads

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11
Q

What is Single Interlock?

A

Single interlock is when a heat detector or detection device is activated and triggers the flow of water

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12
Q

What is Double Interlock?

A

Double Interlock is when a heat detector or detection device is activated it sends a trouble signal and begins to load the water, then upon the activation of a sprinkler head that triggers the flow of water

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13
Q

What is a Light Hazard?

A

quantity and combustibility of contents are low, and low rates of heat are released. Ex - Churches, Offices, Educational

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14
Q

What is an Ordinary Hazard Group 1?

A

combustibility of contents is low while the quantity of combustibles is moderate, stockpiles do not exceed 8 FEET and moderate rates of heat release. Ex - Bakeries, Laundries

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15
Q

What is an Ordinary Hazard Group 2?

A

Quantity and combustibility of contents are moderate to high, stockpiles do not exceed 12 FEET, and moderate rates of heat release. Ex - Mercantile, Repair garages

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16
Q

What is an Extra Hazard Group 1?

A

Combustibility and quantity of contents are high, that includes dust, lint, and materials that present the probability of rapid developing fire, high rates of heat release. Ex - Saw Mills, Aircraft Hangers

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17
Q

What is an Extra Hazard Group 2?

A

Contents within occupancy include a substantial amount of combustible and flammable liquids where shielding is extensive

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18
Q

Basic Sprinkler Coverage for Light and Ordinary Hazard?

A

52,000 ft^2

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19
Q

Basic Sprinkler Coverage for Extra Hazards (Hydracually Calculated) and High Piled Storage?

A

40,000 ft^2

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20
Q

Standard MAXIMUM distance between sprinkler heads is?

A

15 feet

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21
Q

Ordinary Hazard Protection Area is…?

A

130 ft^2

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22
Q

Light Hazard Protection Area is…?

A

225 ft^2

23
Q

All piping and fittings for sprinkler systems are ASTM, what does ASTM stand for?

A

Ameican Society for Testing and Materials

24
Q

Older Sprinkler systems used schedule ____while newer sprinkler systems use schedule __ or schedule __

A

Old - Schedule 40
New - Schedule 7 or 10

25
Q

Sprinkler piping is Steel pipe or CPVC piping, where is CPVC piping permitted to be used?

A

CPVC is permitted in light hazard installations like residential construction or residential offices

26
Q

Fittings are read…?

A

End to End and then the Branch connection

27
Q

How is this fitting read?
1 - End 1”
2 - End 1 1/4”
3 - Branch 1 1/2”

A

1 1/4” X 1” X 1 1/2”

28
Q

Kinds of fittings include?

A

reducing coupling
reducing elbow
90-degree elbow
45-degree elbow

29
Q

NFPA 13 - 6.7 says that control valves that control water in fire protection systems must be a ________________?
NFPA 13 - 6.7.1.2. says that valves that control water in fire protection systems cannot be closed faster than ________?

A

Indicating Valve
5 seconds

30
Q

What is an indicating valve?

A

a valve whee you can visually tell if its OPEN or CLOSED

31
Q

OS&Y - Outside Stem and Yoke

A

indicating valve? YES

32
Q

PIV - Post-Indicating Valve

A

indicating valve? YES
This valve controls valves underground, it has a plate on it that reads “OPEN” or “CLOSED”

33
Q

Wall PIV - Wall Post Indicating Valve

A

indicating valve? YES
valve is found and can be shut off form the exterior of the building

34
Q

BFV - Butterfly Valve

A

indicating valve? YES
Most common valve used in the industry, includes wiring for monitoring connections

35
Q

Gate Valve

A

indicating valve? NO
cannot be used in fire protection (garden hose valve)

36
Q

Globe Valve

A

indicating valve? NO
cannot be used in fire protection

37
Q

Quick Open Butterfly Valve

A

indicating valve? YES
CANNOT be used in fire protection because it can be closed faster than 5 SECONDS

38
Q

Ball Valves

A

indicating valve? YES
CANNOT be used in fire protection because it can be closed faster than 5 SECONDS

39
Q

3-Way Valve

A

used to change gauges without loss in pressure

40
Q

Bleeder Valve

A

used to quickly test the operation of a pressure switch

41
Q

Alarm Valve

A

WET SPRINKLER ONLY
used to control the flow of water and prevent false alarms, adds more pressure to system side to remain closed

42
Q

Flow Paddle “Water Flow Alarm Switch”

A

WET SPRINKLER ONLY
used to isolate different zones within a system, can be set from instant to 90 delay

43
Q

Relief Valve

A

All WET SPRINKLER SYSTEMS require a relief valve so water can be drained
set at 175 psi or 10 psi over the max system pressure

44
Q

Water Gongs

A

Used as an audible alarm for sprinkler systems that have minimal requirements like electronic monitoring. As water flows it travels through the bells and activates the audible alarm

45
Q

Albany Excess Pressure Pumps (Jockey Pump)

A

Provide a boost in pressure to the sprinkler system to increase the amount of water flow

46
Q

Inspectors Test

A

Simulates the flow equal to one sprinkler head, each sprinkler zone requires an inspectors test

47
Q

Shotgun Riser

A

Similar to an alarm valve (no check valve), when water flows through the flow paddle that trips the shotgun riser, and slowly the system side loses pressure

48
Q

Monitoring & Supervision

A

Automatic supervision is required where more than 20 sprinkler heads are attached to a system

49
Q

Pressure Switches

A

DRY and WET sprinkler systems have pressure switches that monitor the pressure and water flow. They monitor DRY systems by monitoring a “loss of air pressure” and monitor WET systems by monitoring a “loss in water pressure”.

50
Q

Accelerator

A

DRY SPRINKLER ONLY
They help trip and send water into a system faster by removing the air or nitrogen from the system

51
Q

Air Supply (Air Compressor)

A

DRY SPRINKLER ONLY
Dry systems require a supply of air at all times
it’s required that the air supply must have the capacity to restore the system back to normal pressure within 30 minutes

51
Q

Air Maintenance Device

A

DRY SPRINKLER ONLY
Controls how much air enters into a dry system from the main air supply (air compressor)

52
Q

Air Release Safety Valve

A

DRY SPRINKLER ONLY
Will not allow the pressure within the system to increase too high

53
Q

Drip Drum

A

DRY SPRINKLER ONLY
an auxiliary drain that allows any excess water trapped in the system to be drained

Introduction To Sprinkler Systems (1 decks)

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