This document discusses reliability engineering and maximizing the benefits of maintenance activities. It covers topics like the costs of maintenance versus downtime, different maintenance approaches like reactive, preventive and predictive, and how to analyze equipment failure data to select the best maintenance strategy. The objectives are to reduce operating costs while improving productivity through strategic equipment maintenance based on analyzing failure patterns and mechanisms. Questions are provided throughout to facilitate discussion on these reliability and maintenance engineering topics.
2. Introduction
• Reliability is about time to
failure
• Maintenance is about
restoring equipment and
processes to operation
• Engineering is finding the
right balance between cost
and action
29. Interval v. Conditional
Interval or time based
• Fixed schedule
• Assumes wear or
predictable time to
failure
• Easy to manage and
plan
Condition based
• Focus on failure
mechanisms
• Consider cost of failure
• May require health
monitoring
• Cost effective
30. How to decide an approach
Ask these questions:
• Nature of failures?
• Able to detect ?
• Predictable?
• Indicators?
• Cost of failure?
• Cost of maintenance?
Approaches
• Reactive
• Preventive
• Predictive
• Proactive
33. Get the data
• Data, Data, Data
• Convert to information
• Do the math
• Look for Stability and
Exceptions
34. Where to start
• Use data you have to
start – build case for
better data collection
• Run experiments to get
better data
• Next focus on high
value areas
35. Build a program
• Maintenance
procedures
• Tools and training
• Engineering
– Design, Reliability &
Operations
• Connect to business
36. Metrics
• Not MTBF
• Business metrics
– Revenue, throughput, et
c.
• Time to failure
– Mean Cumulative
Function or Life
Distributions
38. Summary
• Value – do what adds value
• Understand failure
mechanisms
• Time to failure &
Environmental data
• Breadth of Maintenance
Engineering
Maximize potential benefits of
maintenance activities
Editor's Notes
Value iamge – intro to each task has to create value – tied to that idea,
Balance between investment and value
Background intro to terms and concepts
Balance between investment and value
Analysis of equipment failure as preparation for different types of maintenance programs