NEBOSH Practice Test

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What is a potential risk to an operator during pump maintenance without proper precautions?

Increased Equipment Output
Asphyxiation due to Oxygen Displacement
Improved System Efficiency
Enhanced Cooling Options

The correct answer is: Asphyxiation due to Oxygen Displacement

When performing pump maintenance, one significant risk to an operator is asphyxiation due to oxygen displacement. This scenario often arises in environments where pumps are located in confined spaces or where chemicals are stored that can displace oxygen, such as gases that are heavier than air or certain industrial fluids. Inadequate ventilation in such areas can lead to a depletion of breathable air, resulting in an environment where the concentration of oxygen is insufficient for breathing, thereby posing a serious health risk. Correct precautions during maintenance, including proper ventilation, monitoring of oxygen levels, and the use of personal protective equipment (PPE), are essential to mitigate this risk. This focus on the potential for asphyxiation emphasizes the importance of safety protocols and hazard assessments in industrial settings, ensuring that workers are aware of and prepared for the risks associated with their tasks. Other presented choices do not pertain to risks, and instead imply benefits or enhancements that do not directly relate to operator safety during maintenance tasks.