NCCCO Overhead and Gantry Crane Operations

Question 1

According to OSHA 1910.179(b)(2), what information must be legibly marked on each side of an overhead or gantry crane?

Accepted Answer

The maximum rated load capacity

Answer

OSHA 1910.179(b)(2) requires that the rated load be legibly marked on each side of every overhead and gantry crane. This ensures operators and riggers can immediately identify the crane's capacity limit without consulting documentation.

Question 2

What is the primary purpose of a bridge travel end limit switch on an overhead crane?

Accepted Answer

To prevent the crane bridge from traveling past the end of the runway

Answer

Bridge travel end limit switches cut power to the bridge drive motor before the crane can overrun the end of the runway beam. They are a last-resort safety backup to operator awareness, not a positioning device.

Question 3

Per ASME B30.2, a periodic inspection of an overhead crane in regular service must be conducted at intervals not exceeding:

Accepted Answer

1 year

Answer

ASME B30.2 requires periodic inspections at intervals not exceeding one year for cranes in regular service. Frequent inspections (daily/weekly) are also required, but the formal periodic inspection covering all structural, mechanical, and electrical components must occur annually.

Question 4

Which ASME standard specifically governs below-the-hook lifting devices used with overhead cranes?

Accepted Answer

ASME B30.20

Answer

ASME B30.20 covers below-the-hook lifting devices such as spreader bars, lifting beams, and vacuum lifters. B30.5 governs mobile cranes, B30.9 covers slings, and B30.26 covers rigging hardware.

Question 5

An overhead crane operator inadvertently activates the upper limit switch during hoisting. What is the correct immediate response?

Accepted Answer

Lower the hook immediately, and treat the upper limit switch as a safety backup rather than a routine stop

Answer

The upper limit switch (ULS) is a last-resort safety device, not a normal operating stop. The correct response is to immediately lower the hook. Using the ULS routinely as a stop point causes premature wear and leaves no backup if two-blocking occurs.

NCCCO (National Commission for the Certification of Crane Operators) Practice Test

NCCCO (National Commission for the Certification of Crane Operators) Practice Test

NCCCO Overhead and Gantry Crane Operations