Chapter 10-SPRINKLER OPERATIONS

Question 1

Wet Pipe Sprinkler System:

Answer 1

• contain water in riser and piping at ALL TIMES

- Sprinkler head activates, water is IMMEDIATELY DISCHARGED

Question 2

DRY PIPE:

Answer 2

• contain AIR (sometimes NITROGEN) in the riser at all times
• when sprinkler head activates, air is exhausted through open head, allowing valve to be open and water admitted through piping

-Dry systems are INSTALLED where there is DANGER OF FREEZING

Question 3

DELUGE SYSTEM:

Answer 3

ALL sprinkler heads (or nozzles) are open and will flow SIMULTANEOUSLY
-found in AIRCRAFT HANGERS or where LARGE QUANTITIES OF FLAMMABLE LIQUIDS ARE USED IN INDUSTRIAL PROCESSES

Question 4

PRE-ACTION:

Answer 4

• FUSIBLE sprinkler heads , dry piping and a valve which is opened upon an electrical signal from a smoke, heat or infrared (flame)detector
• often found in COMPUTER ROOMS or other sensitive electronic equipment

Question 5

Combo:

Answer 5

either WET or DRY

SPRINKLER HEADS and Standpipe hose outlets attached to COMMON RISER

Question 6

NON AUTOMATIC:

Answer 6

cellars and sub cellars of older commercial buildings

depend SOLEY ON FIRE DEPT. TO SUPPLY WATER FOR FIREFIGHTING
-may contain fusible sprinkler heads, open heads or perforated pipe

Question 7

Color coded:

Answer 7

Green- AUTOMATIC SPRINKLER
RED-STANDPIPE
YELLOW- COMBO SPRINKLER /STANDPIPE
ALUMINUM- NON AUTOMATIC OR PERFORATED PIPE

caps or SIAMESE CONNECTION PAINTED

Question 8

Sprinkler systems always supplied with?

Answer 8

3 1/2” HOSE

Question 9

Building equipped with Standpipe and Sprinkler, FIRST SUPPLY LINE STRETCHED to ?

Answer 9

STANDPIPE

-if first due engine is supplying both standpipe and sprinkler, 2nd and 3rd due MUST AUGMENT BOTH SYSTEMS

Question 10

In case of COMBO, water flow demands will be GREAT ….

Answer 10

every effort made to augment the system with additional supply lines from OTHER first alarm engine companies

Question 11

NEVER insert any part of your hand inside the connection to clear debris

Answer 11

a SPARE 3 INCH cap should be carried by ALL ENGINE COMPANIES in the event it becomes necessary to cap one side of the siamese connection to prevent an outflow of water due to a MALFUNCTIONING CLAPPER VALVE

another remedy for this: IMMEDIATELY STRETCH AND CONNECT A SECOND 3 1/2” line

Question 12

METALLIC/PLASTIC vandal proof (‘break away”) caps ..these can be removed by?

Answer 12

-STRIKING CENTER of cap with tool

Or
-prying one of screw eyes of the pin lug

Question 13

Whenever possible, SPRINKLER SYSTEMS shall be augmented by ?

Answer 13

2 different engine companies

Question 14

When should ENGINE COMPANY OFFICER order the SPRINKLER SYSTEM AUGMENTED/SUPPLIED ?

Answer 14

INDICATION OF WORKING FIRE (smoke, heat, visible fire, reports from employees,security guards)
-RECON from LADDER COMPANIES INDICATING SAME

WATER FLOW ALARMS indicate water is flowing, but may be due to broken pipe/dislodged head/etc.

Question 15

Pump discharge for Sprinkler should start at ?

Answer 15

150 PSI

-ADJUSTED BASED ON REPORTS FROM LADDER COMPANY PERSONNEL (bluff: engine personnel )
or

MORE THAN 2 LENGTHS ARE NEEDED TO SUPPLY

OR

FIRES ON UPPER FLOORS

Question 16

What should both ENGINE AND LADDER PERSONNEL cary to STOP FLOW OF WATER FROM SPRINKLER?

Answer 16

WOODEN SPRINKLER WEDGES or SPRINKLER TONGS

Question 17

Sprinkler system control valve should ONLY be shut down on orders of ?

Answer 17

INCIDENT COMMANDER

-determined fire has been controlled and hoselines are in position

Question 18

4 basic types of SPRINKLER CONTROL VALVES :

Answer 18

OS&Y- OUTSIDE STEM & YOKE-most common

POST INDICATOR VALVE (PIV)-most common

Wall indicator valve (WIV) or Wall post(WPIV)

Butterfly type indicating Valve

OS&Y and PIV may also be found in standpipe systems

Question 19

Who is often assigned to Sprinkler control valve?

Answer 19

LCC-MUST BE EQUIPPED WITH HT

-prepare to shut down on orders of IC