Chap 9 Addendum 1 High Pressure Pumping

Question 0

High pressure pumpers

Answer 0

1000 GPM or 2000 GPM engines retrofitted with special high pressure discharge elbow
Specialized high pressure equipment
Pressure over 250 psi up to 600 psi

Question 1

What pumpers are capable of high pressure pumping

Answer 1

All are
Conventional
High pressure
3 rd stage

Question 2

3rd stage pumpers

Answer 2

An engine with 3 rd stage that can supply a maximum of 500 GPM up to 700 psi

Question 3

High pressure and 3 rd stage engines have the following specialized equipment

Answer 3

3" high pressure supply hose 
High pressure fittings 
High pressure outlets 
One high pressure outlet on HP PUMPERS 
TWO high pressure outlets on 3 rd stage engines 
Tether straps with gated hooks

Question 4

Tether straps

Answer 4

Attach to high pressure hose either before or after hose is attached
It is recommend that units pre attach the tether strap to high pressure hose and store together as a unit

Question 5

High pressure pumping is defined as

Answer 5

Operating at a discharge pressure over 250
Notify IC when high pressure pumping is necessary
All engines including conventional are capable of high pressures over 250 (conventional engines only under emergency and ordered by IC)

Question 6

When high pressure or 3 rd stage engines operate at high pressures the following precautions should be taken

Answer 6

1. Must use there high pressure supply hose and fittings (painted white and noticeable heavier ) conventional engines do not have
2. Whenever possible an engine supplying higher pressure should be positioned within 1 hose length of FD connection being supplied (max two lengths of high pressure supply hose )
3. Safety zone on each side engine and high pressure supply hose (50’ in all directions around engine and hose )
4. All unused gates and outlets must be closed and capped
5. Each engine operating at high pressure must be controlled by ECC ( monitor pumps)and assisted by ECC from non- operating pumper (monitor radio communications) . Other ECCS from non-pumping engines shall assist in keeping persons out of safety zone
6. Supply lines must be secured with tether straps or utility rope (Secured to both the engine and to the building fire department connection)
   More than one length supply line hose must be tethered together
   7 stairwells served by standpipes used for high pressure pump ops should not be used for staging or rest areas
7. Preset pressure on apparatus (PPG) should not be used charge standpipe (increase pressure slowly)
   9 should be supplied by Two engines (2 different Siamese ) can use first floor outlet

Question 7

Officers of high pressure engines and 3 rd stage engine other than first due fire shall direct there ECCS to position the apparatus where

Answer 7

In proximity to the standpipe Siamese

Question 8

3 rd stage pumping ops

Answer 8

Pressure exceeding 600 psi 3rd stage necessary
Only chief can order
3rd staged preferred when pressures over 500 psi