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RS 522(C)
Advanced System Reliability/Maintainability Analysis (Condensed)

Course Overview

This course considerably expands upon the basics of system reliability, maintainability and availability analysis (presented in RS 403) in a two-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.

The first half of the course 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 RBD Constructs and their Analytic Quantification

  • Using 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 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 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.  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
2 Days
CEUs
1.4
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
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