In TPM, __________ is a form of inspection used to expose hidden defects and return equipment to normal operating conditions.

• A. Painting
• B. Cleaning
• C. Lubrication
• D. Calibration

Answer: (B)

Cleaning in TPM is used as an inspection step to surface hidden defects. When dirt, dust, and grime are removed, issues such as leaks, loose components, wear, misalignment, or corrosion become visible, allowing timely detection and corrective action. This practice helps restore the equipment to its normal operating condition by revealing problems that were obscured and enabling the standard maintenance activities to address them. It’s tied to the Shine element of 5S and to autonomous maintenance, where cleaning becomes a first step that enables reliable operation. While lubrication and calibration are important for performance and accuracy, they address different maintenance needs and are not the inspection-focused process described here; painting is not related to exposing defects.