A successful Total Productive Maintenance strategy is most concerned with?

A successful Total Productive Maintenance (TPM) strategy is primarily focused on minimizing downtime of machinery. The essence of TPM is to enhance overall equipment effectiveness through proactive and preventative maintenance practices. By minimizing downtime, organizations can ensure that machinery operates at optimal levels, leading to increased productivity and efficiency.

This focus on reducing downtime supports several key objectives of TPM: maximizing operational efficiency, improving safety, and fostering a culture of continuous improvement among all employees. Effective TPM encourages operators and maintenance personnel to collaborate, share ownership of the equipment's performance, and embrace practices that prevent breakdowns and extend the life of machinery.

In terms of the other options, maximizing workforce effectiveness and enhancing product design are important in their own right but do not encapsulate the core aim of TPM, which is to ensure machines run reliably with as little interruption as possible. Increasing maintenance costs is contrary to the principles of TPM, as the goal is to implement strategies that reduce overall maintenance costs and improve productivity, rather than escalate expenses.