What type of testing ensures that repairs made to equipment are effective?

Functional testing is a critical process that verifies the operational effectiveness of repaired equipment by assessing its functionality in real-world conditions. This type of testing involves checking the equipment's ability to perform its intended tasks after maintenance or repairs have been completed. By simulating normal operational scenarios, functional testing ensures that the repairs have resolved any issues and that the equipment operates as expected.

This form of testing can include a variety of specific procedures, such as checking for correct operation, verifying safety measures, and ensuring that equipment meets specified performance standards. Conducting functional testing after repairs helps identify any remaining problems, confirming that the equipment is ready for service and will perform reliably.

The other types of testing listed serve different purposes. Voltage detection testing focuses on identifying the presence of voltage in electrical systems and does not provide a complete assessment of equipment functionality. Acceptance testing, which is often performed on new installations, evaluates whether equipment meets predefined specifications and standards before being put into operation. Preventive maintenance testing aims to reduce the likelihood of equipment failure through routine checks and maintenance but does not necessarily verify that repairs were successful.