Snorkel TB65J - Manual (Page 71)

TB65J – 0084248
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 environ-
ment.
ammeter – an instrument for measuring the strength of an electric current
in amperes.
authorized personnel – personnel approved as assigned to perform 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).
boom – a movable cantilever beam which supports the platform.
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 mobility and
support for the booms.
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. Federal OSHA, ANSI, and Snorkel require the use of
additional fall protection beyond the platform guardrails on boom supported
aerial platforms.
floor or ground pressure – the maximum pressure, expressed in pounds
per square inch, a single wheel concentrates on the floor or ground.
gradeability – the maximum slope that the aerial platform is capable of
travel.
ground fault circuit interrupter (GFCI) – a fast-acting circuit breaker that
opens to stop electrical circuit flow if it senses a very small current leakage
to ground. The GFCI is used to protect personnel against a potential shock
hazard from defective electrical tools or wiring.
guardrail system – a vertical barrier around the platform to prevent per-
sonnel from falling.
hazardous location – any location that contains, or has the potential to
contain, an explosive or flammable atmosphere as defined by ANSI/NFPA
505.
intermediate boom – a telescopic boom section that extends and retracts
from within the main boom. The intermediate boom is between the base, or
lower most section of the main boom, and the tip boom.
jib – an articulating boom attached to the tip boom which increases the
overall boom reach.
l evel sensor – a device that detects a preset degree of variation from perfect
level. The level sensor is used to sound an alarm if operating on a slope
greater than the preset value.
l ower controls – the controls located at ground level for operating some or
all of the functions of the aerial platform.
main boom – a boom assembly located between the riser and the jib.
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 – 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 decelerator, 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 plat-
form to the surface upon which the chassis is being supported.
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, experience,
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.
stow – to place a component, such as the platform, in its rest position.
tip boom – a telescopic boom section that extends and retracts from within
the main boom. The tip boom is nearest the platform.
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.
turntable – the structure above the rotation bearing which supports the
booms. The turntable rotates about the centerline of rotation.
unrestricted rated work load – the maximum designed carrying capacity
of the aerial platform allowed by the manufacturer in all operating configu-
rations.
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.
working envelope – the area defined by the horizontal and vertical limits
of boom travel that the platform may be positioned in.
working height – platform height plus six feet.