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// CODE SNIPPET

1926.1426(b) Preventing Boom Free Fall

OSHA 1926 Construction > CC Cranes & Derricks in Construction > 1926.1426 Free Fall and Controlled Load Lowering > 1926.1426(b) Preventing Boom Free Fall
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Where the use of equipment with a boom that is designed to free fall (live boom) is prohibited, the boom hoist must have a secondary mechanism or device designed to prevent the boom from falling in the event the primary system used to hold or regulate the boom hoist fails, as follows:

1926.1426(b)(1) Friction Drums Must Have:

1926.1426(b)(1)(i)

A friction clutch and, in addition, a braking device, to allow for controlled boom lowering.

1926.1426(b)(1)(ii)

A secondary braking or locking device, which is manually or automatically engaged, to back-up the primary brake while the boom is held (such as a secondary friction brake or a ratchet and pawl device).

1926.1426(b)(2)

Hydraulic drums must have an integrally mounted holding device or internal static brake to prevent boom hoist movement in the event of hydraulic failure.

1926.1426(b)(3)

Neither clutches nor hydraulic motors must be considered brake or locking devices for purposes of this subpart.

1926.1426(b)(4)

Hydraulic boom cylinders must have an integrally mounted holding device.

Related Code Sections


1926.1426(b) Cranes & Derricks in Construction, Preventing Boom Free Fall
Where the use of equipment with a boom that is designed to free fall (live boom) is prohibited, the boom hoist must have a secondary mechanism ...
OSHA 1926 Construction > CC Cranes & Derricks in Construction > 1926.1426 Free Fall and Controlled Load Lowering > 1926.1426(b) Preventing Boom Free Fall
1926.1426(b)(1)(ii) Cranes & Derricks in Construction,
A secondary braking or locking device, which is manually or automatically engaged, to back-up the primary brake while the boom is held ...
OSHA 1926 Construction > CC Cranes & Derricks in Construction > 1926.1426 Free Fall and Controlled Load Lowering > 1926.1426(b) Preventing Boom Free Fall > 1926.1426(b)(1) Friction Drums Must Have: > 1926.1426(b)(1)(ii)
1926.1426 Cranes & Derricks in Construction, Free Fall and Controlled Load Lowering
to free fall (live boom) is prohibited, the boom hoist must have a secondary mechanism or device designed to prevent the boom from falling in the event ...
OSHA 1926 Construction > CC Cranes & Derricks in Construction > 1926.1426 Free Fall and Controlled Load Lowering
1926.1426(c) Cranes & Derricks in Construction, Preventing Uncontrolled Retraction
Hydraulic telescoping booms must have an integrally mounted holding device to prevent the boom from retracting in the event of hydraulic failure ...
OSHA 1926 Construction > CC Cranes & Derricks in Construction > 1926.1426 Free Fall and Controlled Load Lowering > 1926.1426(c) Preventing Uncontrolled Retraction
1926.1426(a) Cranes & Derricks in Construction, Boom Free Fall Prohibitions
The use of equipment in which the boom is designed to free fall (live boom) is prohibited in each of the following circumstances ...
OSHA 1926 Construction > CC Cranes & Derricks in Construction > 1926.1426 Free Fall and Controlled Load Lowering > 1926.1426(a) Boom Free Fall Prohibitions
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