OSHA 30 Construction Crane Safety Flashcards
what are the top 4 fatalities related to Cranes
struck by load
electrocution
crushed during assembly
failure of boom
were are the specs for cranes found
OSHA 29 1926.1427
what is not included for the OSHA crane guidelines
power shovels excavators diggers
what should be kept on each crane
crane manual
What are the requirements for an A/D director
a qualified and competent person or two people, one that is competent and one that is qualified
How often does OSHA require inspections to be carried out
once a year
What are the requirements for a crane that has been modified
most be approved by the manufacturer
must be done by an authorized mechanic
must meet or exceed the original strength of the crane
maintain a what distance for powerlines up to 50kV of what
10ft
how can a signal person be qualified
They must be evaluated by signal evaluator from a third party or an employer
were can the OSHA section on hand signals be seen
Appendix A to Subpart CC of Part 1926–Standard Hand Signals.
equipment with foot pedal breaks must have
locks
operational aids
equipment that can assist the user in controls the crane
What are the three category 1 operational aids
boom hoist limiting
luffing jib-limiting
anti two-blocking
were is fall protection specified
CFR 1926 subpart M
what does the rigger do
connects and releases the load from the crane
what is on way you dont need to make sure a crane is leveled
by using a seismograph
rough terrain cranes have what level of capacity
light to medium
truck mounted cranes have what level of capacity
medium to high
can truck mounted cranes be used in muddy conditions
no
How do crawler cranes compare to the other cranes types in terms of capacity and reach
they are the highest in both
were are tower cranes usually used in
high-rise projects
which crane has the abiility to be jacked up
tower cranes
what is never true with rough terrain cranes
they are able to maneuver well with loads
crawler cranes are also known as
conventional cranes
rough terrain cranes should be used with
outriggers
Outriggers should be _____________ extended and the outrigger pads should be ____ the area of the outrigger float
fully extended 3x
what happens if outrigger pads are not available
materials that are able to hold the appropriate weight can be used
should wheel of crane be fully lifted to allow for full lifting capabiity
yes
What is side booming
when on side of the crane takes on more weight then the other side
what are the two ways of hoist provided by a crane
the main block line (used for heavy loads ) and the whip line (used for lighter loads )
what is the anti-two block device
they are able to control which line is being actively used
and can protect the boom
When does OSH require the anti-two block device to be used
when workers are suspended in a basket by the crane
if the any part of an RT crane tire touches the ground before a lift what should you do
recheck the load guidelines for the crane
lattice boom
short boom is used for
high-capacity lifts
if the crane can lift over the drive what is required by the crane
it must have a 5 outrigger
what does full reeving allow the crane to do
maximize lifting capabilities
an hydraulic crane r
who usually inspects any modified equipment
the operator
can you Gerry rig a crane
no
what must the employer do when working with cranes
- identify the work area
What options does an employer have if the crane can get within 20 ft of a power line
- de-energize or ground
- 20 foot clearance
- ask utility for voltage and see if you are with the table described by OSHA
if the crane connects with a power line and the operator must evacuate immediately, what must the operator do
jump out of the crane and shuffle their feet they should not run
if a crane is energized what should never be done
touching the crane and the ground at the same time
what are OSHA’s requirements for ground conditions
all ground preparations must be meet
when the manufacture procedure are unavailable who should develop the procedures
a registered professional engineer
taglines are
easy to used
allow for extra control
adds to worker safety
are all rough terrain cranes wall wheel steering
no only certain types
truck mounted cranes can either have what types of booms
lattice or hydraulic
crawler cranes usually have
lattice booms
what are tower cranes used for
medium duty over a wide area
which types of cranes are usually lattice type
rough terrain and crawler
what is used with a whip line
a headache ball and hook
what is used with a main block
a sheaves
when is fifth outrigger required
if the crane can lift above the operator
lattice can be configured by
adding or removing booms
a truck mounted train with hydraulics
requires solid ground to operate
what is not true about lattice booms
they are frequently used by rough terrain vehicles
crawler cranes can be extended by
hundreds of feet
what does OSHA require of the swing area of the counter weight
their must be a designated area marked worker safe zone that were the counter weight can not swing
what are the OSHA requirements for tower cranes
foundation/structure support
plumb tolerances
climbing procedures
post-erection load test
monthly inspections
what are main components of a tower crane
mast, main jib, counter jib
what happens to the crane if the levels for it go below the black lines in manual
they will be in danger of structural or stability loss depending on which section in the manual you are looking in
what is required for load charts
1 rated capacity
2 specific lengths of components
3 required parts for hoist reeving
4 size and construction of rope
critical lift is one exceeding ____________ % on the load chart table
75
when doesn’t some one need to be crane certified
when using sideboom cranes
derricks
or equipment that is rated for lifting less then 2000
were are the specs required for material hoists
ansi A10.5
