sprinkler

Question 1

black

Answer 1

135

Question 2

bronze

Answer 2

165

Question 3

white

Answer 3

212

Question 4

blue

Answer 4

286

Question 5

red

Answer 5

360

Question 6

green

Answer 6

400

Question 7

orange

Answer 7

500

Question 8

release mechanisms

Answer 8

fusible link - two levers held in place by a metal link
glass bulb - bulb filled w/ liquid and air bubbles.
chemical pallet- pallet of solder under compression

Question 9

components

Answer 9

deflector
frame
orifice
cap
threads

Question 10

types

Answer 10

pendant - 1/2 orifice: 15 gpm
upright = “ “
sidewall- pipes run along wall
flush- recessed in ceiling 117 degree disc covers head then falls and exposed 165 degree sprinkler head
residential - fast response
jr. system heads - 1/4 - 3/8 inch orifice

Question 11

operation

Answer 11

• Plug the sprinkler using Peterson Wedges and divert water using a 2 ½” hose
• Use a 12x ladder (rubber shoes)
• Locate the [Outside Stem & Yoke or Post Indicating Valve or Gate Valves] and shut them off
• Open up the Drainage system
• Sprinkler head must be replaced and valves must be re-opened; until then the building will be on “fire watch”

Question 12

wet pipe

Answer 12

used where freezing does not occur
piping contains water under pressure at all times
individual sprinkler activated
most common in city

Question 13

dry pipe

Answer 13

used where freezing occurs
piping contains air or nitrogen under pressure(15-50) psi
upon sprinkler activation what is released

Question 14

pre action

Answer 14

used to prevent water damage
Activated by heat/smoke detector (heads have fusible links
individual sprinklers activated

Question 15

deluge

Answer 15

• Used on ‘high-hazard occupancies’ie-aircraft hangers
• Activated by fire, heat, or manual device
• Water flows through ALL heads simultaneously

Question 16

looped system

Answer 16

• Buildings 1983-1988
• Two points of connection to the sprinkler system so the water for a given sprinkler head is delivered from two or more risers