Duration: 3 days CEUs: 2.1 CRP Credits: 3 Course Prerequisites Assumes Basic Knowledge Of Undergraduate Algebra Elementary Calculus Probability and Statistics Recommended Prior Course(s) Alternative/Similar Course(s) Next Recommended Course Software Used Primary: BlockSim Supplemental: Weibull++, RCM++, Xfmea

Computer Required for Course
Plan to install and explore the course software prior to attending.

Upcoming Seminars:

You may register via the online store, use the print-ready order forms linked from the seminar calendar or contact ReliaSoft.

# G522A - System Reliability and Maintainability Analysis and Optimization

## Learn System Reliability / Maintainability and Related Analyses

G522A explores advanced concepts and applications for system reliability/maintainability analysis and optimization utilizing a reliability block diagram (RBD) or fault tree analysis (FTA) approach.

• Identify critical components (or failure modes) and determine the most effective ways to improve system performance through design improvements and/or maintenance planning.
• Use simulation to obtain estimated performance metrics that can facilitate decision-making in a variety of areas, such as scheduling planned maintenance, planning for spares, identifying bottlenecks in production throughput and estimating life cycle costs.

### Introduction and Overview

• Defining a system.
• Viewing a system as a collection of components and/or component failure modes.

### RBD Configurations and Fault Tree Gates and Events

• Using reliability block diagrams (RBDs) to represent the reliability model of system.
• Series configurations.
• Simple parallel configurations.
• k-out-of-n configurations.
• Complex configurations.
• Bayes' theorem method.
• Complex configurations for failure modes, networks and mechanical systems.

### Introduction to Time Dependency

• Introduction to time dependency.
• Inclusion of "used" components in modeling.
• System reliability metrics:
• Obtaining a system pdf.
• Derivation of functions of interest: system failure rate function, system MTTF, etc.

### Advanced Reliability Block Diagram (RBD) Constructs and their Analytic Quantification

• Modeling block dependency:
• Combining life distributions with life-stress (load) relationships to describe dependency effects.
• Modeling standby redundancy:
• Energized and quiescent failure distributions.
• "Hot," "Warm" and "Cold" standby definitions.
• Switching (perfect or imperfect switching, with delays, retries and switch quiescent failure probabilities).
• k-out-of-n-plus-M standby configurations.
• Additional reliability block diagram (RBD) constructs:
• Nodes.
• Containers.
• Block Encapsulation (subdiagram blocks).
• Block Multiplicity.
• Block Mirroring.

### Identifying Opportunities

• Identifying importance of components, subsystems (and or modes) and their overall impact on system reliability.

### Optimum Reliability Allocation

• Cost/Feasibility functions.
• Determining component reliabilities to achieve system goal.

### Introduction to Repairable Systems Analysis: Fundamentals of Maintainability and Availability

• Repair and downtime distributions and metrics.
• Introduction to renewal theory.
• Introduction to maintainability.
• Imperfect repairs (restoration factors).
• Availability definitions:
• Instantaneous (Point) Availability
• Mean Availability
• Inherent Availability
• Achieved Availability
• Operational Availability

### Introduction to Preventive Maintenance (PM) Principles

• When does "Preventive Maintenance" make sense?
• The fallacy of "Constant Failure Rate" and "Preventive Replacement."
• Quantifying preventive vs. corrective replacement strategies.
• Determining optimum PM intervals.
• Modeling effects of PM actions.

### Advanced Simulation Options: Using Policies, Pools and Resources

• Adding Crews to the analysis.
• Probabilistic elements.
• Crew costs.
• Crew utilization metrics and bottlenecks.
• Adding Spare Part Pools (Depots) to the analysis.
• Probabilistic elements.
• Spare part inventory management, costs.
• Spare utilization metrics and bottlenecks.
• Standard, on-condition and upon emergency spare part provisioning with associated costs and probabilistic delays.
• Utilizing "Corrective," "Preventive" and "Inspection" actions with associated policies.
• Corrective actions, "Immediate" or "Upon Inspection" (hidden/discovery).
• Inspections based on system time, component age and/or other system events (e.g., similar component failure elsewhere in the system).
• PM actions based on system time, component age and/or other system events (e.g., similar component failure elsewhere in the system).

### Visualizing and Improving System Availability

• Looking at common metrics (MTBF, MTBDE, MTBE, AX, etc.) and charts.
• Additional (new) metrics for identifying opportunities in repairable systems:
• RS-FCI (ReliaSoft's Failure Criticality Index).
• RS-DECI (ReliaSoft's Downing Event Criticality Index).
• FRED reports.

### Throughput Analysis

• Throughput metrics and terminology.
• System throughput.
• Component throughput.
• System and component utilization metrics.
• Bottlenecks identification.
• Backlog processing.

### Including Costs in the Analysis, Introduction to Life Cycle Cost Analysis

• Determination of the probabilistic costs associated with system operation.
• Sample financial analysis.

### Introduction to Reliability Phase Diagrams

#### Hands-On Software Practice

• Introduction to and familiarization with BlockSim.
• Creating models in BlockSim that apply all of the above principles.
• Using realistic cases (described in an objective statement), determine how to set up and analyze each case in a team environment.
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