Free Certified Pipefitter Rigging and Hoisting Operations Questions and Answers 1

Question 1

A pipefitter is rigging a 2,000-pound pipe spool using a two-leg bridle sling. The angle of each sling leg relative to the horizontal load is 30 degrees. What is the tension on each sling leg?

Accepted Answer

2,000 pounds

Answer

As the angle of a sling decreases, the tension on each leg increases significantly. At a 30-degree horizontal angle, the tension multiplier is 2.0. Therefore, the tension on each leg is equal to the total weight of the load (2,000 pounds). The calculation is (Total Load / 2) * Multiplier = (2000 / 2) * 2.0 = 2,000 pounds.

Question 2

According to ASME B30.9, which of the following conditions is an immediate cause for removing a synthetic web sling from service?

Accepted Answer

Missing or illegible identification tag

Answer

ASME B30.9 standards mandate that a sling must be removed from service if its identification tag is missing or cannot be read. This is critical because the tag contains the manufacturer's information and, most importantly, the rated capacity (Working Load Limit) for different hitches.

Question 3

A signal person needs to communicate 'Raise the Boom and Lower the Load' to a crane operator. According to standard ANSI/OSHA hand signals, what is the correct signal?

Accepted Answer

Arm extended horizontally, thumb pointing up, flexing fingers in and out.

Answer

The standard OSHA and ANSI hand signal for 'Raise the Boom and Lower the Load' is to extend the arm horizontally with the thumb pointing up, then opening and closing the fingers until the action is complete.

Question 4

A pipefitter is tasked with lifting an L-shaped pipe spool. To ensure a level and stable lift, the single lifting point must be positioned directly above the spool's:

Accepted Answer

Center of gravity

Answer

For a load to be lifted without tilting or tumbling, the main hook or lifting point must be directly above the load's center of gravity. The center of gravity is the balance point of the object, where the entire weight can be considered to be concentrated.

Question 5

When using a manually operated chain fall or come-along, which of the following actions is a serious safety violation?

Accepted Answer

Centering the load in the saddle of the hook.

Answer

Using a 'cheater bar' or any other extension on the handle of a come-along or chain fall is strictly prohibited. The handle is designed for a specific leverage; using an extension can cause the user to apply excessive force, leading to overloading and catastrophic failure of the hoist or its components.

Certified Pipefitter Practice Test

Certified Pipefitter Practice Test

Free Certified Pipefitter Rigging and Hoisting Operations Questions and Answers 1