Six Sigma Black Belt Certified Practice Exam

What is the best method to enhance the long-term availability of a machine?

1. Machine repair

2. Total productive maintenance

3. Computerized SPC systems

4. Increased operator training

The correct answer is: Total productive maintenance

Total productive maintenance (TPM) is the best method to enhance the long-term availability of a machine because it focuses on proactive and preventive maintenance techniques that engage all employees in the maintenance process. TPM aims to improve the overall effectiveness of equipment by reducing downtime, speeding up machine repairs, and ensuring that equipment is functioning at peak performance. TPM includes regular maintenance schedules, operator involvement in basic maintenance tasks, and continuous improvement initiatives, which collectively contribute to the machines having fewer breakdowns, longer life spans, and higher reliability. This not only increases the machines' availability but also boosts productivity since less time is spent on repairs and unplanned downtimes. While machine repair can address existing issues, it does not necessarily prevent future problems. Computerized statistical process control (SPC) systems are useful for monitoring processes but do not focus on machine maintenance directly. Increased operator training can enhance skills and awareness but does not inherently address the equipment's mechanical reliability and maintenance needs as thoroughly as TPM does. Therefore, TPM stands out as the most comprehensive approach for ensuring long-term machine availability.