Question 1

According to OSHA 1926.1408, the minimum clearance distance for power lines up to 50 kV is:

Accepted Answer

OSHA Table A requires a minimum clearance of 10 feet for voltages up to 50 kV.

Question 2

Who is allowed to determine the voltage of an overhead power line?

Accepted Answer

Only the utility owner/operator can confirm the voltage. The crane operator must assume the maximum voltage in the range unless confirmed by the utility.

Question 3

When hoisting personnel in a platform, the crane's capacity must be derated to:

Accepted Answer

OSHA requires the total weight of the loaded personnel platform and rigging not to exceed 50% of the crane's rated capacity for the radius and configuration.

Question 4

A fire extinguisher in the crane cab must have a minimum rating of:

Accepted Answer

OSHA and ASME B30.5 require a portable fire extinguisher with a minimum rating of 10 BC to be accessible in the cab.

Question 5

The 'Swing Radius' of the crane's counterweight must be:

Accepted Answer

Barricades must be erected to prevent personnel from entering the pinch point area between the rotating superstructure and fixed objects.

Question 6

Before lifting personnel, a trial lift with test weights must be performed to ___ of the platform's rated capacity.

Accepted Answer

A proof test lift to 125% of the platform's rated capacity must be performed at each new setup location before hoisting people.

Question 7

Who has the authority to stop a lift if a safety concern arises?

Accepted Answer

OSHA grants the operator the authority to stop, and essentially anyone on a construction site has the right to signal an emergency stop if a hazard is seen.

Question 8

When assembling or disassembling a crane, who must supervise the operation?

Accepted Answer

An A/D Director (Competent and Qualified Person) must supervise the entire assembly/disassembly process.

Question 9

Using synthetic slings during assembly/disassembly (A/D) requires:

Accepted Answer

OSHA 1926.1404 specifically mandates that synthetic slings used for A/D work must be protected from abrasive or sharp edges with softeners.

Question 10

If a crane touches a power line, the operator should generally:

Accepted Answer

The operator is safest inside the cab (equipotential zone). Exiting can create a path to ground for the electricity. Jump only if the crane is on fire.

Question 11

A 'Competent Person' is defined as someone who:

Accepted Answer

OSHA defines a Competent Person by their ability to recognize hazards AND their authority to take corrective action.

Question 12

Monthly crane inspections must be:

Accepted Answer

Monthly inspections must be documented and kept on file for at least 3 months.

Question 13

When hoisting personnel, the crane must be equipped with:

Accepted Answer

Anti-Two-Block (A2B) protection is mandatory when hoisting personnel to prevent the block from contacting the boom tip, which could snap the line.

Question 14

Fall protection is required for assembly/disassembly workers when they are at a height of more than ___ feet.

Accepted Answer

OSHA 1926.1404 specifies that fall protection is generally required at 15 feet during assembly/disassembly (unlike the standard 6 feet for general construction).

Question 15

If working near a transmitter (radio/TV tower), the operator should be aware of:

Accepted Answer

Radio frequency energy can induce voltage in the crane structure, causing shocks or sparks. Grounding and insulating materials may be required.

Question 16

When traveling with a load (Pick and Carry), the load should be:

Accepted Answer

Keeping the load low reduces the tipping moment if the crane hits a bump. Restraining swing prevents dynamic side loading.

Question 17

According to OSHA, an annual crane inspection must be performed by:

Accepted Answer

Annual comprehensive inspections require a 'Qualified Person' (higher level of technical knowledge/degree/certification than Competent Person).

Question 18

Modifications to a crane that affect capacity or safety must be approved by:

Accepted Answer

Only the manufacturer or an RPE can approve structural modifications, ensuring they don't compromise safety factors.

Question 19

When operating near power lines, a 'Dedicated Spotter' is required when:

Accepted Answer

If encroachment into the minimum clearance distance is possible, a dedicated spotter whose *only* job is to watch the clearance must be used.

Question 20

The Load Moment Indicator (LMI) or Rated Capacity Limiter (RCL) must be:

Accepted Answer

Operational aids like the LMI/RCL are mandatory on modern cranes and must be functioning. If they fail, operations must stop or follow temporary alternative measures.

Question 21

When hoisting personnel, can the crane be used to lift other loads simultaneously?

Accepted Answer

Lifting personnel is a critical operation. No other loads can be lifted on any line while personnel are suspended.

Question 22

Personnel platforms must be suspended by:

Accepted Answer

Rigging for personnel platforms must use a bridle system with a master link/shackle to ensure stability and redundancy (5:1 safety factor).

Question 23

Hooks used for hoisting personnel must:

Accepted Answer

Hooks must have a positive locking latch that prevents the rigging from detaching inadvertently.

Question 24

If the anti-two-block device stops the function, the operator should:

Accepted Answer

The A2B cuts off dangerous functions (hoist up, boom down/extend). The operator must reverse the action (hoist down/boom up/retract) to clear the lockout.

Question 25

Accessible areas within the equipment's swing radius must be barricaded to prevent:

Accepted Answer

The counterweight swing area is a major pinch point hazard. Barricades prevent workers from walking into the crush zone.

Question 26

Windows in crane cabs must be:

Accepted Answer

Visibility is paramount. Safety glass prevents shattering, and distortion-free glass ensures depth perception.

Question 27

When leaving the crane for a short break, the load must be:

Accepted Answer

Never leave a load suspended unattended. Land it safely.

Question 28

If a lightning storm approaches, the operator should:

Accepted Answer

Cranes are lightning rods. Lower the boom to reduce risk, and evacuate the area.

Question 29

When traveling under power lines with no load (transit), the minimum clearance for voltages up to 50 kV is:

Accepted Answer

OSHA Table T (Travel clearance) allows a reduced clearance of 6 feet for up to 50 kV compared to the 10 feet required during operation.

Question 30

Crane operator certification is valid for:

Accepted Answer

NCCCO certification is valid for 5 years, after which recertification is required.

Question 31

Who is responsible for determining if the load weight exceeds the crane's capacity?

Accepted Answer

While others provide info, the Operator has the ultimate responsibility not to lift a load that exceeds the chart limits.

Question 32

When refueling a crane:

Accepted Answer

Standard safety protocol: Engine off, no smoking, bonding/grounding to prevent sparks.

Question 33

Load hooks must be inspected for cracks using NDT (Non-Destructive Testing) at least:

Accepted Answer

Hooks are part of the annual comprehensive inspection, which typically includes checking for cracks/deformation.

Question 34

If a safety device (like a level indicator) malfunctions, you can operate:

Accepted Answer

OSHA allows operation with alternative measures (e.g., using a carpenter's level) for a limited time (usually until parts arrive/repair is possible, max 7-30 days depending on the device).

Question 35

A 'Critical Lift' plan is typically required when the load exceeds ___ of the crane's capacity.

Accepted Answer

While OSHA doesn't strictly define the % for 'Critical Lift' universally (it varies by company/site, often 75%), 75% is the standard industry threshold requiring a written plan.

Question 36

Access ladders and steps on cranes must have:

Accepted Answer

Slip resistance is required to prevent falls during access/egress.

Question 37

The 'Boom Length Indicator' is required on:

Accepted Answer

Telescopic cranes have variable boom lengths, so an indicator is required to determine capacity. Lattice cranes have a fixed length determined during assembly.

Question 38

Hoisting personnel is permitted:

Accepted Answer

Hoisting personnel is the method of last resort. It is prohibited unless other methods are demonstrated to be more dangerous or infeasible.

Question 39

Hand signals must be posted:

Accepted Answer

Standard hand signal charts must be available/posted for reference by the operator and signal person.

Question 40

If the operator takes medication that causes drowsiness:

Accepted Answer

Operating under the influence of any substance that impairs ability is strictly prohibited.

Safety Regulations Practice Questions

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