Engine 9 -Standpipe Operations Flashcards
Primary Factors for installation of standpipe are ?
HEIGHT
AND
AREA
Buildings requiring a stretch of more than ______lengths of hose should be included in CIDS?
MORE than 3 lengths
Standpipe categories :
WET-contain water in riser at all times supplied by CITY main, gravity tank, pressure tank, and/or fire pump…combination- standpipe and sprinkler, MOST are wet …water flow demands for both sprinkler and standpipe required proper augmentation
DRy- may be equipped with an automatic source of supply, but many contain NO WATER and only supply is from FD pumpers (this is called manual dry system)
Engine companies will NEVER use occupants hose, however:
Stretching of OCCUPANT HOSE by LADDER and RESCUE companies operating remotely from an engine company, while performing searches, may be JUSTIFIED TO SAVE LIVES
Standpipes may be supplied through siamese connections and /or floor outlets..
RED- STANDPIPE
GREEN- AUTOMATIC SPRINKLER
ALUMINUM- NON AUTOMATIC sprinkler or perforated pipe
YELLOW- COMBINATION SPRINKLER /STANDPIPE
either CAPS or ENTIRE siamese connection may be painted
-if NO Color coding is present, information is usually EMBOSSED or stamped on a plate or on siamese itself
Standpipe systems should ALWAYS be supplied with?
3 1/2” hose
- whenever POSSIBLE, supplied by at least 2 different pumpers
- whenever possible , 2 INDEPENDENT siamese connections
-if only ONE siamese, second supply line can be attached to FIRST FLOOR OUTLET
If a standpipe system is to be SUPPLIED via floor outlet , proper fittings must be employed to attach the 3 1/2” hose to the 2 1/2” outlet…..
PRD SHOULD be removed…if it cannot be removed and no other outlet is available without a PRD, then it is permissible to use an outlet with a PRD (CONFLICT with Evolutions 10)
General rule :
SEPARATE ENGINE company supplying the standpipe system for EACH HOSELINE placed in service
in PRESSURE
each pumper should apply SAME/CORRECT PRESSURE
If a building is equipped with standpipe and sprinkler, first supply line goes to ?
STANDPIPE siamese …ECC must verify correct siamese
If the FIRST ENGINE is supplying both standpipe and sprinklers, 2nd and 3rd MUST stretch to augment BOTH SYSTEMS
Supplying MANUAL dry standpipe systems:
- engines pump, more likely to “run away from water”
- INITIALLY, standpipe should be supplied at IDLE, and as piping fills, pressure can be increased to proper levels.
- 35 FOOT SOFT is recommended
________INSERT any part of your hand inside siamese connection?
NEVER
-spare 3” MALE cap 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 way to remedy this problem is
IMMEDIATELY stretching a 3 1/2” line and connecting
Twist hose _______turns to insert, and turn to right?
4-5 LEFT TURNS
MANY siamese are equipped with METALLIC, or PLASTIC vandal proof caps….attached with screw eyes…
both METAL/PLASTIC caps are removed by striking the CENTER of the cap with a tool…caps can also be removed by prying one of the screw eyes off the pin lug
ALL MEMBERS, particularly ECC’S should monitor HT transmissions for indications that pressure to the standpipe system needs to be increased …
PRESSURE CHART:
1-10…150
11-20…200
SO ON SO FORTH
Buildings under 2008 code having a standpipe riser OVER 600 FEET in height, shall have separate “low zone” and ‘high zone’ siamese connections …these are NOT INTERCONNECTED (must supply correct one)….connections shall be identified with SIGNAGE stating either “low zone” OR “HIGH ZONE” and indicate the floors they serve…high zone also know as EXPRESS PIPING
-operations will be in accordance with High pressure pumping
buildings with express piping should be subject of familiarization drills and include in the CIDS program
STAND PIPE KIT:
- 2 1/2” controlling nozzle/ 1 1/8” MST and 1 1/2” x 2 1/2” INCREASER
- Hand control WHEEL(S)
- 2 1/2” x 2 1/2” IN LINE PRESSURE GAUGE
- PIPE WRENCH
- spanner wrenches
- door chocks
- special adapters -NST or national pipe thread
G.N.C.S.O.A.P.
- gauge
- nozzle
- chocks
- spanners
- outlet wheel
- Adapters
- Pipe wrench
2 1/2” hose must have one length pre connected with controlling nozzle (do not pre connected inline gauge)
All hoselines stretched from standpipes shall be connected to outlets on FLOOR BELOW
(variations from this, approved in CIDS by Division commanders)
-1st and 2nd engine companies always operate together
-3rd and 4th on 2nd line
FIRST ARRIVING CONTROL FF:
Remain at standpipe outlet throughout the operation and communicate with the first arriving engine officer to ensure that adequate pressure is supplied to the nozzle. He shall ensure a proper hook up to the standpipe outlet. remain in CLOSE PROXIMITY to the standpipe outlet throughout the operation in case adjustments are needed …..IN LINE PRESSURE GAUGE should always be used to ENSURE CORRECT nozzle pressure
Control man should be aware, that kinks, cracking or shutting down the nozzle, during the operation will also cause pressure displayed on in line pressure gauge to increase and should refrain from adjusting the valve
As General rule: with WATER FLOWING:
- standpipe operations with a 2 1/2” lead length with 1 1/8” MST, the outlet pressure of 70 PSI FOR 3 LEGTHS and 80 PSI for 4 lengths
- Below grade operations, head pressure will increase 5 psi for every 10 feet below grade….pressure may HAVE TO BE REDUCED accordingly
- Air conservation is an important consideration for the SECOND ARRIVING ENGINE…if not possible to conserve air due to products of combustion the IC must be notified so that additional engine companies can be utilized to reinforce the critical position of first hoseline
- SCISSOR STAIRS -requiring 4 or more lengths should be in CIDS
Conventional Engine:
2 stage 1000 gpm or 2000 gpm engines
High Pressure Engines:
2 stage 1000 Gpm or 2000 Gpm engines
-special high pressure discharge elbow
OVER 250 PSI and UP TO 600 PSI
3rd stage Engine:
engine with a 3rd stage
-can supply MAX 500 GPM/700 psi (so 600 PSI –700 PSI—3RD STAGE)
High pressure and 3rd stage have following equipment:
- 3” high pressure supply hose, 50 feet per length
- high pressure fittings
- high pressure outlets (one on HP/2 ON 3RD STAGE)
- TETHER STRAPS with gated hooks (strap contains velcro bands)…units should pre attach tether strap to hight pressure hose
High Pressure pumping is defined as operating at discharge pressures over _______?
250 PSI
IC shall be notified when high pressure pumping is necessary
conventional Engines should not operated in excess of 250 psi (although they are capable), unless EMERGENCY AND IC APPROVAL
When HIGH PRESSURE PUMPING operations are in use, following precautions are to be followed:
- High Pressure or 3rd stage Engine must use HIGH PRESSURE hose and fittings , painted WHITE and NOTICEABLY HEAVIER and TETHER STRAP (recommended units pre attach tether strap)
- if possible, Engine positioned within 1 length of FD connection/ NOT MORE THAN 2 LENGTHS
- SAFETY ZONE on EACH SIDE OF ENGINE AND SUPPLY HOSE (tape, rope. stanchion)…at least 50 feet in ALL DIRECTIONS around working engine and supply hose..if two connected lengths are in use, safety zone may need to be expanded
- all unused gates closed and capped TIGHTLY
- Each ENGINE controlled by ECC AND ASSISTED BY AN ECC from NON PUMPING ENGINE…One ECC WILL OPERATE and ONE WILL MONITOR HT TRANSMISSIONS…other ECC’S OF NON PUMING engines shall keep people out of the safety zone
More precautions:
- SUPPLY LINES SECURED WITH TETHER STRAPS, BOTH ENGINE AND BUILDING FD CONNECTION AND EACH LENGTHS TETHERED TO EACH OTHER, if 2 are used
- no tether straps, use UILITY ROPE
- BC SHOULD be designated HIGH PRESSURE PUMPING GROUP SUPERVISOR, but operation may be implemented prior to their arrival
- IC should ensure building occupants avoid stairwells
- STAIRWELLS SERVED BY STANDPIPES may NOT BE USED as rest areas or staging during HIGH PRESSURE PUMPING OPERATIONS..use minimum amount of personnel in these stairways (JUST MENTIONS STAGING/REST…does not mention other FF activities )
- DO NOT use PRESET on pro pressure governor…once supply line is charged, pressures are to increased slowly
