Which of the following statements is true regarding total productive maintenance?

Total productive maintenance (TPM) emphasizes the importance of involving all employees, particularly machine operators, in the maintenance process to enhance equipment effectiveness. When machine operators take responsibility for most routine maintenance, they are empowered to perform tasks such as cleaning, lubricating, and conducting basic inspections. This proactive engagement helps to identify potential issues early, reduces downtime, and fosters a sense of ownership over the equipment.

In this context, option D highlights the core philosophy of TPM, which seeks to maximize equipment availability and reliability through the active participation of operators. This approach not only improves the overall efficiency of machinery but also encourages a culture of continuous improvement within the organization.

The other choices do not encapsulate the foundational principles of TPM as effectively. While skilled mechanics and cleaner-inspectors play a role in maintenance, their involvement typically focuses on specialized tasks rather than the fundamental operator-driven initiative central to TPM. Similarly, while operators might report productivity, the emphasis on accountability and routine maintenance responsibilities set out in option D is what truly aligns with the TPM framework.