Final answer:
The four critical questions to consider when shutting down equipment are: Is the equipment safely isolated? Has proper maintenance been performed? Are there any safety hazards present? Is the shutdown procedure documented and followed?
Step-by-step explanation:
When shutting down equipment, there are four critical questions to consider:
Is the equipment safely isolated? This involves ensuring that all power sources are disconnected, and all hazardous energy is released or controlled.
Has proper maintenance been performed? This includes checking for any faulty parts or potential issues that may arise during shutdown.
Are there any safety hazards present? This involves identifying and addressing any potential risks or dangers that may arise during shutdown.
Is the shutdown procedure documented and followed? It is important to have a clear and structured process for shutting down equipment to ensure consistency and safety.
By addressing these critical questions, you can help ensure a safe and reliable shutdown of equipment.