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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:
Domain 1: Site
(Approximately 20% of the test)
Domain 2: Operations
(Approximately 26% of the test)
Domain 3: Technical Knowledge
(Approximately 28% of the test)
Domain 4: Manufacturers’ Load
Charts
(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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