What is the primary concept of total productive maintenance (TPM)? Identify the four elements that productive maintenance includes

What will be an ideal response?

TPM's primary concept is reducing variability through autonomous maintenance and excellent maintenance practices. Four other ingredients of TPM are:
1. Designing machines that are reliable, easy to operate, and easy to maintain
2. Emphasizing total cost of ownership when purchasing machines, so that service and maintenance are included in the cost
3. Developing preventive maintenance plans that utilize the best practices of operators, maintenance departments, and depot service
4. Training for autonomous maintenance so operators maintain their own machines and partner with maintenance personnel