Evolution of Maintenance Best Practices and System Reliability Timeline graph illustrating the evolution of maintenance best practices over time, from 1930 to 2000. The x-axis represents time, while the y-axis represents system availability and reliability, showing a positive upward trend in maintenance sophistication and effectiveness. (1) *Early Maintenance Approaches (1930 - 1950): a. Run to Failure: The initial approach where maintenance was only performed after a failure. b. Inspection: Introduction of basic inspection practices. (2) *Preventive Maintenance and Failure Analysis (1950 - 1970) a. Preventive Maintenance: Scheduled maintenance routines to prevent failures. b. Failure Analysis: Analyzing failures to prevent recurrence. (3) *Reliability-Centered Maintenance (1970 - 1990) a. Reliability-Centered Maintenance (RCM): Emphasis on identifying maintenance strategies to improve reliability. b. Computerized Maintenance Management Systems (CMMS): Integration of technology in maintenance. c. Condition-Based Maintenance (CBM): Monitoring conditions to predict failures. (4) *Advanced Maintenance Strategies (1990 - 2000) a. RCM Best Practice: Refinement of RCM approaches. b. Total Productive Maintenance (TPM): Involvement of all employees in maintenance. c. Asset Integrity Management: Ensuring assets function as intended throughout their lifecycle. Source: Society of Automotive Engineer SAE Standard JA1011/JA1012