Cranes and derricks installed on floating surfaces must have a placed where it can be easily seen by the operators.
Personnel platform
Guardrail
Boom angle indicator
Hoist drum
The correct answer and explanation is :
The correct answer is Boom angle indicator.
Explanation:
When cranes and derricks are installed on floating surfaces, ensuring visibility and safety for operators is crucial. In this context, a Boom angle indicator serves as the essential tool for providing the operator with critical information about the angle of the crane’s boom, which can impact the safety and effectiveness of the crane operation.
Why Boom Angle Indicator?
A Boom angle indicator is a device that shows the angle of the crane’s boom in relation to the ground. In floating or unstable surfaces, the boom angle can significantly affect the crane’s stability and lifting capacity. The boom angle indicator allows the operator to monitor and control the angle of the boom while operating the crane. This is particularly important when the crane is on a floating surface such as a barge, where motion and shifting could cause the boom angle to change unexpectedly.
Having this indicator visible and easily accessible ensures that the operator can make real-time adjustments and avoid hazardous situations such as overloading the crane or performing lifts at dangerous boom angles. Without proper visibility of the boom angle, the risk of accidents or equipment failure increases, especially on unstable surfaces like water or ice.
Why Not the Other Options?
- Personnel platform: While a personnel platform might be used for lifting workers, it is not directly related to ensuring the visibility of the crane’s operation or the boom angle. It doesn’t aid the operator in controlling the crane itself.
- Guardrail: Guardrails are used for worker safety, but they are not focused on helping crane operators monitor the crane’s position or stability during lifting operations. Guardrails are important for preventing falls, not for crane operation.
- Hoist drum: The hoist drum is where the rope or cable is wound, but it does not provide direct information about the boom’s angle or the overall crane’s stability, which is crucial in floating operations.
Thus, the Boom angle indicator is the correct answer, as it provides critical real-time data to ensure the safe and effective operation of cranes on floating surfaces.