What is the purpose of a proof test?

The purpose of a proof test is primarily to establish a safe design pressure for components, ensuring that they can withstand specified conditions during operation. This process involves subjecting the equipment to pressures that exceed its normal operating conditions to verify that it can safely handle potential stresses and loads without failure.

By conducting a proof test, engineers can confirm the integrity and reliability of the components being tested, which is crucial for maintaining safety standards in various engineering applications, such as pressure vessels and piping systems. This step is vital for preventing accidents and ensuring that the equipment performs reliably under real-world conditions.

The other options, while relevant in different contexts, do not align with the main purpose of a proof test. Understanding the significance of establishing a safe design pressure through proof testing is essential in power engineering to uphold safety and operational integrity.