NCCCO Tower Crane Operator
Examination Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
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Question 1
According to ASME B30.3, an overhead power line is ALWAYS considered to be
A. Safe as long as the load, hoist rope and structure are kept at least 10 feet away
B. De-energized if there is no power on the jobsite
C. De-energized if the lines have a safety cover over them
D. Energized until the power company has verified it is not energized
Answer: D. Energized until the power company has verified it is not
energized. ASME B30.3 mandates that all overhead power lines be assumed
energized until the electric utility company provides written verification that they
have been de-energized and visibly grounded. Never assume lines are safe based
on appearance or the presence of safety covers. This is a critical safety principle
because power lines can cause fatal electrocution and severe injuries. The
operator must maintain required clearance distances at all times and never rely on
visual inspection alone to determine if a line is safe .
Question 2
When the operator is required to leave a radio remote control unattended, the
operator must
,A. Lock the control in a safe location
B. Notify the signal person
C. De-energize the crane and secure the remote
D. Leave the crane in free swing
Answer: C. De-energize the crane and secure the remote. Unattended remote
controls pose a significant hazard due to the risk of accidental activation. De-
energizing the crane ensures that no unintended movement can occur while the
operator is absent, and securing the remote prevents unauthorized use. This
requirement aligns with OSHA and ASME rules intended to eliminate unintended
crane motion. Simply locking the control in a safe location is insufficient because
the crane remains energized and capable of movement .
Question 3
The area inside a tower crane's tail swing radius must be
A. Clearly marked only
B. Posted with warning signs
C. Barricaded
D. Monitored by a spotter
Answer: C. Barricaded. The tail swing area presents a severe struck-by hazard due
to the rotation of the counterweight and rear portion of the crane. Barricading
physically prevents personnel from entering the danger zone. Warning signs alone
are insufficient because they rely on compliance rather than physical restriction.
OSHA mandates barricading to control access and reduce fatal contact incidents.
The barricade must be placed to prevent any personnel from entering the swing
radius during crane operation .
Question 4
According to ASME B30.3, when should maintenance personnel be permitted to
operate the crane?
,A. When it is a light load
B. When the operator is not available
C. When performing their duties
D. When winds are less than 20 mph
Answer: C. When performing their duties. ASME B30.3 permits maintenance
personnel to operate the crane only while performing their assigned duties. This
restriction ensures that only qualified individuals operate the crane and that
operation is limited to necessary maintenance activities. Operating the crane for
other purposes without proper qualification and authorization violates safety
standards and increases accident risk .
Question 5
Installing counterweights/ballast, unfolding, telescoping the mast, and
reconfiguration of a tower crane shall be performed by a
A. Competent person
B. Signal person
C. Qualified person
D. Authorized operator
Answer: C. Qualified person. A qualified person is defined by OSHA and ASME as
one who possesses a recognized degree, certificate, or extensive experience
demonstrating the ability to solve problems related to crane operations. Activities
such as mast telescoping and counterweight installation directly affect structural
integrity and stability. Errors during these procedures can result in catastrophic
collapse. Therefore, only a qualified person is permitted to perform or directly
supervise these critical tasks .
Question 6
According to ASME B30.3, who should be present when climbing or telescoping
operations take place?
, A. Supervisor
B. Field Technician
C. Operator
D. Manufacturer's Representative
Answer: C. Operator. ASME B30.3 specifies that the operator should be present
during climbing or telescoping operations. This is crucial because the operator
must be available to operate the crane if needed during these critical procedures,
and the operator's experience and knowledge of the crane's systems are essential
for safe climbing operations. The operator's presence ensures that if any
unexpected issues arise during climbing, a qualified individual is immediately
available to respond .
Question 7
According to OSHA 29 CFR 1926 Subpart CC, when must crane operator
certification be obtained?
A. Within 30 days of hire
B. Before operating any equipment covered under Subpart CC
C. Within 1 year of completing training
D. Certification is voluntary
Answer: B. Before operating any equipment covered under Subpart CC. OSHA 29
CFR 1926 Subpart CC requires that crane operators be certified by an accredited
organization, such as NCCCO, or qualified by an audited employer program
BEFORE operating equipment in construction. This requirement is not optional and
there is no grace period. Operators must present valid certification documentation
before they are permitted to operate the crane on a construction site .
Question 8
If the operator experiences a power failure while the crane is lifting a load, the
operator should
Examination Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf
Question 1
According to ASME B30.3, an overhead power line is ALWAYS considered to be
A. Safe as long as the load, hoist rope and structure are kept at least 10 feet away
B. De-energized if there is no power on the jobsite
C. De-energized if the lines have a safety cover over them
D. Energized until the power company has verified it is not energized
Answer: D. Energized until the power company has verified it is not
energized. ASME B30.3 mandates that all overhead power lines be assumed
energized until the electric utility company provides written verification that they
have been de-energized and visibly grounded. Never assume lines are safe based
on appearance or the presence of safety covers. This is a critical safety principle
because power lines can cause fatal electrocution and severe injuries. The
operator must maintain required clearance distances at all times and never rely on
visual inspection alone to determine if a line is safe .
Question 2
When the operator is required to leave a radio remote control unattended, the
operator must
,A. Lock the control in a safe location
B. Notify the signal person
C. De-energize the crane and secure the remote
D. Leave the crane in free swing
Answer: C. De-energize the crane and secure the remote. Unattended remote
controls pose a significant hazard due to the risk of accidental activation. De-
energizing the crane ensures that no unintended movement can occur while the
operator is absent, and securing the remote prevents unauthorized use. This
requirement aligns with OSHA and ASME rules intended to eliminate unintended
crane motion. Simply locking the control in a safe location is insufficient because
the crane remains energized and capable of movement .
Question 3
The area inside a tower crane's tail swing radius must be
A. Clearly marked only
B. Posted with warning signs
C. Barricaded
D. Monitored by a spotter
Answer: C. Barricaded. The tail swing area presents a severe struck-by hazard due
to the rotation of the counterweight and rear portion of the crane. Barricading
physically prevents personnel from entering the danger zone. Warning signs alone
are insufficient because they rely on compliance rather than physical restriction.
OSHA mandates barricading to control access and reduce fatal contact incidents.
The barricade must be placed to prevent any personnel from entering the swing
radius during crane operation .
Question 4
According to ASME B30.3, when should maintenance personnel be permitted to
operate the crane?
,A. When it is a light load
B. When the operator is not available
C. When performing their duties
D. When winds are less than 20 mph
Answer: C. When performing their duties. ASME B30.3 permits maintenance
personnel to operate the crane only while performing their assigned duties. This
restriction ensures that only qualified individuals operate the crane and that
operation is limited to necessary maintenance activities. Operating the crane for
other purposes without proper qualification and authorization violates safety
standards and increases accident risk .
Question 5
Installing counterweights/ballast, unfolding, telescoping the mast, and
reconfiguration of a tower crane shall be performed by a
A. Competent person
B. Signal person
C. Qualified person
D. Authorized operator
Answer: C. Qualified person. A qualified person is defined by OSHA and ASME as
one who possesses a recognized degree, certificate, or extensive experience
demonstrating the ability to solve problems related to crane operations. Activities
such as mast telescoping and counterweight installation directly affect structural
integrity and stability. Errors during these procedures can result in catastrophic
collapse. Therefore, only a qualified person is permitted to perform or directly
supervise these critical tasks .
Question 6
According to ASME B30.3, who should be present when climbing or telescoping
operations take place?
, A. Supervisor
B. Field Technician
C. Operator
D. Manufacturer's Representative
Answer: C. Operator. ASME B30.3 specifies that the operator should be present
during climbing or telescoping operations. This is crucial because the operator
must be available to operate the crane if needed during these critical procedures,
and the operator's experience and knowledge of the crane's systems are essential
for safe climbing operations. The operator's presence ensures that if any
unexpected issues arise during climbing, a qualified individual is immediately
available to respond .
Question 7
According to OSHA 29 CFR 1926 Subpart CC, when must crane operator
certification be obtained?
A. Within 30 days of hire
B. Before operating any equipment covered under Subpart CC
C. Within 1 year of completing training
D. Certification is voluntary
Answer: B. Before operating any equipment covered under Subpart CC. OSHA 29
CFR 1926 Subpart CC requires that crane operators be certified by an accredited
organization, such as NCCCO, or qualified by an audited employer program
BEFORE operating equipment in construction. This requirement is not optional and
there is no grace period. Operators must present valid certification documentation
before they are permitted to operate the crane on a construction site .
Question 8
If the operator experiences a power failure while the crane is lifting a load, the
operator should
