MASS Test Rigging and Slings Flashcards
6 cards from real MASS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 MASS Test Rigging and Slings flashcards as text
What effect does a narrow sling angle (less than 30°) have on the tension in each leg of a multi-leg sling?
Answer: It greatly increases tension in each leg
Narrow sling angles dramatically increase the tension in each leg, potentially exceeding the sling's rated capacity even for a moderate load.
Which type of hitch provides the least security because the load can tip or slide?
Answer: Vertical hitch
A vertical hitch is the least secure because the load is only supported from above and can tip, rotate, or slide off the hook.
What should a rigger check on a shackle before use?
Answer: The pin is fully seated, moused, and the WLL is legible
Riggers must verify the shackle pin is fully threaded and secured (moused), and confirm the Working Load Limit marking is readable.
When using a choker hitch, how does the load capacity compare to the sling's vertical rated capacity?
Answer: It is approximately 75-80% of the vertical capacity
A choker hitch reduces the sling's effective capacity to approximately 75-80% of its vertical rating due to the angle stress at the choke point.
What is the purpose of a tag line during a rigging operation?
Answer: To control load swing and rotation without direct contact
Tag lines allow workers to guide and control a suspended load's rotation and movement without standing under or in direct contact with the load.
Under OSHA 29 CFR 1926.251, who is responsible for inspecting rigging equipment before each use?
Answer: A competent person
OSHA requires that rigging equipment be inspected before each use by a competent person who can identify unsafe conditions.