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RS 522
Advanced System Reliability, Maintainability and Availability Analysis

Training Course Overview

This training course considerably expands upon the basics of system reliability, maintainability and availability analysis (presented in RS 403) in a three-day intensive theoretical and hands-on course (utilizing BlockSim) and exposes the attendee to the advanced concepts, principles and requirements for performing advanced quantitative system analyses using a reliability diagram (RBD) analysis approach.

The first half of the course (1.5 days) presents a comprehensive coverage of system analysis theory and principles while the latter half utilizes BlockSim to apply the learned principles through numerous examples and case studies. A comprehensive course outline follows.

Course Outline


Theory and Principles Coverage


I.  Introduction and Overview

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

II.  Elementary Reliability Block Diagram (RBD) Constructs and their Analytic Quantification

  • 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.

III. 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.

IV. 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.
    • Basic load sharing configurations.
    • K-out-of-n load sharing configurations.
  • 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.

V.  Identifying Opportunities

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

VI. Optimum Reliability Allocation

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

VII.  Introduction to Discrete Event Simulation

VIII.  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
    • Steady State Availability
    • Inherent Availability
    • Achieved Availability
    • Operational Availability

IX. 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.

X.  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).

XI.  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.

XII.  Throughput Analysis

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

XIII.  Including Costs in the Analysis, Introduction to Life Cycle Cost Analysis

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

Computer Hands-On Section


XIV.  BlockSim Software Familiarization

  • Introduction to and familiarization with BlockSim.
  • Creating models in BlockSim that apply all of the above principles

XV.  Hands-on Workshop, Examples

  • Individually work through detailed examples with step-by-step instructions to complete sample analyses.

XVI.  Group Case Studies

  • Using realistic cases (described in an objective statement), determine how to set up and analyze each case in a team environment.
Software Used

BlockSim for System Reliability, Maintainability, Availability and Related Analyses

Summary
Course Length
3 Days
CEUs
2.1
Prerequisites
RS 401 or equivalent knowledge.

Knowledge of principles covered in RS 402 and RS 403 is desired but not required.
Instructor
Staff
On-Site Available?
YES
Public Courses
Schedule...
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Upcoming RS 522 Seminars

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May 2008
May 12 - 14, 2008: RS 522 Advanced System Analysis in Manchester, UK
September 2008
September 22 - 24, 2008: RS 522 Advanced System Analysis in Tucson, Arizona
More...

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