Snorkel S1930CE - Manual (Page 49)

S1930 – 0361518EE
Appendix A – Glossary
aerial platform – a mobile device that has an adjustable position
platform, supported from ground level by a structure.
ambient temperature – the air temperature of the immediate en-
vironment.
ammeter – an instrument for measuring the strength of an electric
current in amperes.
authorized personnel – personnel approved as assigned to per-
form specific duties at a specific location.
base – the relevant contact points of the aerial platform that form
the stability support (e.g. wheels, casters, outriggers, stabilizers).
battery tray – a swing-out compartment that holds the batteries
and the battery charger.
center of gravity – the point in the aerial platform around which its
weight is evenly balanced.
chassis – the integral part of the aerial platform that provides mobil-
ity and support for the scissors structure.
fall restraint – a system that is used while working on a boom lift
within the boundaries of platform guardrails to provide restraint from
being projected upward from the platform. This system includes a
harness or belt, lanyard, and a lanyard anchor. Although federal
regulations, OSHA, ANSI, and Snorkel do not require the use of
additional fall protection beyond the platform guardrails on scissor
lift aerial platforms, local, state, or employer rules may require their
use.
floor or ground pressure – the maximum pressure, expressed in
pounds per square inch, a single wheel concentrates on the floor or
ground.
free-wheeling valve – a needle valve that when adjusted open
allows hydraulic fluid to flow through the wheel drive motors. This
allows the aerial platform to be pushed or towed without damage to
the drive motors.
gradeability – the maximum slope that the aerial platform is capable
of travel.
guardrail system – a vertical barrier around the platform to pre-
vent personnel from falling.
hazardous location – any location that contains, or has the poten-
tial to contain, an explosive or flammable atmosphere as defined by
ANSI/NFPA 505.
hydraulic tray – a swing-out compartment that hold the electrical
panel for the lower controls, the hydraulic directional control valve,
the free-wheeling valve, the pump, and the hydraulic fluid filter.
level sensor – a device that detects a preset degree of variation
from perfect level. The level sensor is used to prohibit certain aerial
platform functions if operating on a slope greater than the preset
value.
lower controls – the controls located at ground level for operating
some or all of the functions of the aerial platform.
manufacturer – a person or entity who makes, builds, or produces
an aerial platform.
maximum travel height – the maximum platform height or the
most adverse configuration(s) with respect to stability in which
travel is permitted by the manufacturer.
maximum wheel load – the load or weight that can be transmitted
through a single wheel to the floor or ground.
Minimum Safe Approach Distance (M.S.A.D) – the minimum
safe distance that electrical conductors may be approached when
using the aerial platform. Also called M.S.A.D.
operation – the performance of any aerial platform functions within
the scope of its specifications and in accordance with the
manufacturer’s instructions, the users work rules, and all applicable
governmental regulations.
operator – a qualified person who controls the movement of an
aerial platform.
personal fall arrest system – a fall protection system that is
used while working on an unprotected edge (such as a roof top
with no guardrail). This system includes a harness, lanyard or other
connecting device, a fall arrestor, an energy absorber or decelera-
tor, an anchorage connector, and a secure anchorage such as a
building beam, girders or columns. An aerial platform is not a fall
arrest anchorage.
platform – the portion of an aerial platform intended to be occupied
by personnel with their tools and materials.
platform height – the vertical distance measured from the floor of
the platform to the surface upon which the chassis is being sup-
ported.
pothole protection interlock – a safety feature that sounds and
alarm and automatically stops the platform raise function if the pot-
hole protection skids are prevented from lowering properly.
pothole protection system – a mechanical tip-over prevention
system consisting of skids along the bottom of both sides of the
chassis which lower as the platform is raised.
prestart inspection – a required safety inspection routine that is
performed daily before operating the aerial platform.
qualified person – a person, who by reason of knowledge, expe-
rience, or training is familiar with the operation to be performed and
the hazards involved.
rated work load – the designed carrying capacity of the aerial
platform as specified by the manufacturer.
safety prop – a bar that when properly positioned mechanically
prevents the platform from lowering.
stow – to place a component, such as the platform, in its rest
position.
turning radius – the radius of the circle created by the wheel
during a 360° turn with the steering wheels turned to maximum.
Inside turning radius is the wheel closest to the center and outside
turning radius is the wheel farthest from the center.
unrestricted rated work load – the maximum designed carrying
capacity of the aerial platform allowed by the manufacturer in all
operating configurations.
upper controls – the controls located on or beside the platform
used for operating some or all of the functions of the aerial platform.
wheelbase – the distance from the center of the rear wheel to the
center of the front wheel.