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The Core examination
portion of the CCO written certification program tests the
following knowledge areas relating to the operation of
cranes:
(Approximately 20% of the test)
(Approximately 26% of the test)
(Approximately 28% of the test)
(Approximately 26% of the test)
DOMAIN 1: SITE
(Approximately 20% of the test)
1. Know that the
suitability of the supporting surface to handle the
expected loads. Elements of concern include but are not
limited to:
(a) weakness below the surface such as voids, tanks and
loose fill;
(b) weakness on the surface such as retaining walls,
slopes, excavations and depressions.
2. Know the proper use of mats, blocking
or cribbing and outriggers or crawlers as they affect
the supporting surfaces to handle the expected loads of
the operation.
3. Know electric power line hazards,
corresponding regulations and safety practices.
4. Know how to identify and evaluate
hazards associated with:
(a) access to job site
(b) site hazards such as underground
utilities
(c) transportation clearances
5. Know how to review how to review lift
requirements with site supervision to include
determination of working height, boom length, load
radius, load weight, crane capacity, travel clearance,
extension of crawlers or outriggers/stabilizers and
counterweights.
DOMAIN 2: OPERATIONS
(Approximately 26% of the test)
1. Know which federal
regulations and industry standards affect safe operation
of the crane, including but not limited to ASME B30.5,
B30.10, B30.23, OSHA 1910.180, 1926.550.
2. Know how to conduct daily crane
inspections for unsafe conditions/deficiencies and to
notify supervision of these conditions.
3. Know how to pick,
carry, swing and place the load smoothly and safely on
rubber tires and on outriggers/stabilizers or crawlers
(where applicable).
4. Know proper procedures and methods of
reeving all wire ropes and methods of reeving multiple
part lines and selecting the proper load block and/or
ball.
5. Know standard hand signals as
specified in ASME B30.5.
6. Know how to shut down and secure the
crane properly when leaving it unattended, based on
manufacture's recommendations in both normal and
emergency conditions.
7. Know the manufacture's recommendations
for operating in various weather conditions, and
understand how environmental conditions affect the safe
operation of the crane.
8. Know how to verify
the weight of the load and rigging prior to initiation
of the lift.
9. Know how to determine where the load
is to be picked up and places and how to verify the
radii.
10. Know basic load and rigging
procedures.
11. Know how to perform daily maintenance
and inspection.
12. Know how to use the following
operator aids:
(a) LMI,
(b) anit-two block device,
(c) boom angle indicator,
(d) rated load indicator,
(e) boom length indicators.
13. Know which operations reduce crane
capacity or require specific procedures or skill levels
such as:
(a) multi-crane lifts,
(b) suspended personnel platforms,
(c) duty cycle operations,
(d) barge operations.
14. Know the proper procedures for
operating safely under the following conditions:
(a) traveling with suspended loads,
(b) approaching two-blocking,
(c) operating near electric power lines,
(d) using suspended personnel platforms,
(e) lifting loads from beneath the
surface of the water,
(f) using various approved counterweight
configurations,
(g) handling loads out of the operators
vision ("operating in the blind"),
(h) using electronic communications
techniques, such as radios, extreme weather.
15. . Know the proper procedures for load
control and the use of hand-held tag lines.
16. Know how to react to:
(a) electric power line contact,
(b) loss of stability,
(c) control malfunction,
(d) block and line twisting,
(e) carrier or travel malfunction.
17. Know how to properly use the
outriggers in accordance with manufacturer’s
specifications.
18. Know alternative
operating procedures when operator aids malfunction.
19. Know the effects of dynamic loading
from:
(a) wind,
(b) stopping and starting,
(c) impact loading
(d) moving load
(e) traveling with the load (pick and
carry).
20. Know the effect of
side loading.
DOMAIN 3: TECHNICAL KNOWLEDGE
(Approximately 28% of the test)
1. Know the basic
crane terminology and definitions.
2. Know the functions
and limitations of the crane and attachments.
3. Know wire rope:
(a) construction and breaking strength, inspection
procedures,
(b) replacement criteria and procedures,
(c) capacity and when multi-part rope is needed,
(d) maintenance and lubrication, relationship between
line pull and safe working load.
4. Know rigging devices and their use,
such as:
(a) slings,
(b) spreaders,
(c) lifting beams,
(d) wire rope fittings, such as clips, shackles and
wedge sockets,
(e) saddles (softeners),
(f) clamps,
(g) hook blocks and overhaul balls.
5. Know the limitations of protective
measures against electrical hazards.
6. Know the effects of
load share and load transfer in multi-crane lifts.
7. Know the significance of the
instruments, gauge readings and machine power system.
8. Know the requirements of pre-operation
and inspection and maintenance.
9. Know the uses and limitations of all
operational devices/aids.
10. Know how to calculate net capacity
for the crane configuration using the applicable
manufacture's load chart.
11. Know how to use
the manufacturer-approved attachments and their effect
on the cranes operation.
12. Know the
principles of backward stability.
DOMAIN 4: MANUFACTURERS’ LOAD CHARTS
(Approximately 26% of the test)
1. Know the
terminology necessary to use load charts.
2. Know how to ensure
that the load chart is the appropriate chart for the
machine in its particular application.
3. Know how to use capacity load charts.
This includes knowing:
(a) the operational limitations of load charts and
footnotes,
(b) the difference between structural capacity and
capacity limited by stability,
(c) what is included in load chart capacity,
(d) the range diagram and its relationship to the load
chart,
(e) the work area chart and its
relationship to the load chart,
(f) where to find and how to use the
"parts-of-line" information,
(g) the safe working load of hoist line.
4. Know how to use the load chart
together with the load indicators.
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