Operational Aids
Category I Operational Aids
- boom hoist limiting device (required on equipment manufactured after December 16, 1969),
- buffing jib limiting device,
- automatic anti two-blocking device (required on telescopic boom cranes manufactured after February 28, 1992; lattice boom cranes manufactured after November 8, 2011; derricks manufactured after November 8, 2011; articulating cranes equipped with a load hoist manufactured after December 31, 1999; digger derricks manufactured after November 8, 2011), and
- automatic or warning-type anti two-blocking device (required on lattice boom cranes manufactured after February 28, 1992 and before November 8, 2011).
Note: Two-block protection is not required for lattice boom equipment used for dragline, clamshell (grapple), magnet, drop ball, container handling, concrete bucket, marine operations that do not involve hoisting personnel, and pile driving work.
Category II Operational Aids
- boom angle or radius indicator (required on all equipment, except digger derricks manufactured before November 9, 2010),
- jib angle indicator if the equipment has a luffing jib,
- boom length indicator if the equipment has a telescopic boom (unless the rated capacity is independent of the boom length),
- load weighing and similar devices (required on equipment (other than derricks, articulating cranes, and digger derricks manufactured before November 8, 2011) manufactured after March 29, 2003 with a rated capacity more than 6,000 pounds),
- automatic overload prevention device, load weighing device, load moment (or rated capacity) indicator, or load moment (rated capacity) limiter (required on articulating cranes manufactured after November 8, 2011),
- outrigger/stabilizer position (horizontal beam extension) sensor/monitor if the equipment has outriggers or stabilizers (required on equipment manufactured after November 8, 2011), and
- hoist drum rotation indicator if the equipment has a hoist drum not visible from the operator's station (required on equipment manufactured after November 8, 2011).
Knowledge Check Choose the best answer for the question.
6-7. Which of the following is considered a Type II Operational Aid?
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