they must be in conjunction with and not
in place of the pressure gauge. Digital
pressure gauges and combination pres-sure/flow gauges are allowed. Gauges
that are back-lit with colored LEDs allow
the purchaser to use different colors
for preconnects, discharges, and foam
Common pump panel materials
include stainless steel, vinyl-coated aluminum, and spray-on plastic bed liner.
Some purchasers specify a diagrammatic
pump panel that has the top view of the
apparatus with all of the discharges listed as color-coded lines going to the valve
that controls the discharges.
The pump panels must be illuminated.
Many purchasers specify that one light
comes on when the apparatus is shifted
into pump gear and the rest are switched
on by the operator. As with the other
lights, LEDs do an outstanding job while
using low current draw.
Some other pump panel controls that
you might specify include a secondary
fuel gauge, an air horn button for evacuation signal, lighting controls, generator
controls, and deck gun controls.
Chapter 17, Auxiliary Pumps
and Associated Equipment
An auxiliary pump is a water pump in
addition to the fire pump used either in
conjunction with or independent of the
fire pump. Two types of auxiliary pumps
are outlined in the standard: high pressure and normal pressure.
The high-pressure pump needs to have
a minimum output of 66 gpm 600 psi.
The normal pressure pump can be rated
at 30, 60, 90, 120, 250, or 350 gpm and
pump at 100 percent capacity 150 psi,
70 percent capacity at 200 psi, and 50
percent capacity at 250 psi.
Most of the requirements of this
chapter mirror the requirements for the
Chapter 18, Water Tanks
Water tanks used in fire apparatus
must be constructed of noncorrosive ma-
terial or protected from corrosion. Plastic
tanks with a lifetime warranty have
overtaken the fire service. Tanks must be
cradled, cushioned, or spring-mounted
to protect from stress created by road
travel. Baffles and/or swash partitions
are required to prevent the moving liquid
from making the apparatus unstable.
Depending on the type of apparatus,
the shape of the water tank can have a
dramatic effect on other vehicle features.
For instance, an L-shaped tank can result in a very low hosebed that is shorter
in length than a flat or T-shaped tank.
Modifications can be specified to store
ground ladders through the tank and for
rear suction/discharges plumbing to run
through sleeves in the tank.
The tank-to-pump flow rate for tanks
less than 500 gallons is 250 gpm. Tanks
that are 500 gallons and up are required
to have a 500-gpm flow rate. The tank-to-pump line must also have a check
valve to prevent backfilling.
If the apparatus is equipped with a fire
pump, a tank-fill line must be provided.
A 1,000-gallon or less tank is required
to have a one-inch line. More than 1,000
gallons, a two-inch fill line must be
The tank must have a water level
indicator. Some purchasers still specify
a visual indicator, but most use the more
versatile electronic type. The sensor in
the tank accurately signals the water
level to electronic indicators that can be
located on the pump panel, near a rear fill
connection, inside the cab, and to larger
displays located on the sides of the cab.
The tank must be vented to allow the
water to be drawn from the tank. The
fill opening must have a screen and be
clearly marked. If you routinely fill from
an overhead connection in the station,
If the tank is being installed on a mobile
water supply apparatus, it must have a
direct tank fill and the capability to dis-
charge its load left, right, and to the rear.
Chapter 19, Aerial Devices
Chapter 19 addresses the requirements
for the types of aerial devices. It covers the three basic types: aerial ladder,
elevating platform, and water tower.
The aerial ladder is required to have a
minimum rated vertical height of 50 feet.
The horizontal reach is measured from
the centerline of the turntable to the outermost rung when the aerial is extended
to its maximum horizontal reach. There
are no minimums on elevating platforms
or water towers unless they are equipped
with a ladder, but they are measured the
The minimum rated capacity of an
aerial ladder is 250 pounds at the outermost rung when the ladder is horizontal.
If there is a waterway on the ladder, this
rating is without water in the system.
The minimum capacity must remain
constant throughout the operating
envelope of the aerial ladder. In addition,
it must be able to carry its rated capacity
with the aerial at 45° while discharging
water. Many aerials available exceed the
minimum capacity in the standard and
must be rated in 250-pound increments
(in addition to any mounted equipment).
Ladder rungs need to be evenly spaced
and not more than 14 inches apart with
skid-resistant surface or covering. The
ladder shall be a minimum of 18 inches in
width inside the ladder and have a mini-
mum of 12-inch-high handrails. If a water
tower is equipped with a ladder, it must
meet all of the minimum requirements of
an aerial ladder.
Aerials are not required to have a
prepiped water delivery system; but if
thye do not, a portable ladder pipe and
three-inch hose must be supplied. When
specifying a prepiped ladder pipe, some
purchasers opt to have a device allowing
the pipe to be used either at the tip or be
attached one section below, allowing the
fly section to remain clear for rescue or
ventilation. If a power-operated monitor
is supplied, it must be controlled from
the turntable. Auxiliary controls can be
provided at the tip of the ladder as well.
( 28) A pump shift override is not required, but
many specify it in case the main pump shift