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.
An integrally mounted holding device prevents the boom from retracting
in the event of hydraulic failure.
Free Fall of the Load Line is Prohibited
In each of the following circumstances, controlled load lowering is required and free fall of the load line hoist is prohibited:
- An employee is directly under the load.
- An employee is being hoisted.
- The load is directly over a power line, or over any part of the area extending the Table A of OSHA Standard 1926.1408 clearance distance to each side of the power line; or any part of the area extending the Table A of Standard 1926.1408 clearance distance to each side of the power line is within the radius of vertical travel of the load.
- The load is over a shaft.
- The load is over a cofferdam, except where there are no employees in the fall zone of the load.
Knowledge Check Choose the best answer for the question.
3-5. In crane operations, free fall of the load line hoist is prohibited in which of the following circumstances?
You forgot to answer the question!