What action should be taken if a boiler's pressure exceeds its safety limit?

When a boiler's pressure exceeds its safety limit, the most appropriate action is to shut down the boiler and inspect the safety relief valve. This is crucial because exceeding the safety limit can lead to dangerous situations, including potential boiler explosions or failures.

Shutting down the boiler ensures that any potential hazards are mitigated. Once it is safely offline, inspecting the safety relief valve is necessary because this component is designed to release pressure when it reaches a predetermined limit. If the relief valve is malfunctioning or blocked, it may not operate correctly to prevent pressure buildup, thus leading to unsafe conditions.

Taking this action prioritizes safety and helps ensure the equipment is functioning correctly. It's essential for operators to follow proper procedures in managing high-pressure situations to prevent accidents and ensure compliance with safety regulations.