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Relex Reliability Software “the intuitive solution_” Relex Software

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									 Relex
  Reliability Software
  “the intuitive solution!”


Relex Software Corporation
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Relex Life Cycle Cost
    Life Cycle Cost Analysis
   Calculate all lifetime costs of a system
   Calculate Net Present Value (NPV)
   Perform Sensitivity Analysis
   Evaluate Alternatives
              What is Relex LCC?

   A capable life cycle cost package
       Establish the system cost breakdown structure
        (CBS)
       Use the equation editor to assign cost equations
   May be installed…
       As an integral part of a Relex package
       As a stand-alone package

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     What does Relex LCC do?


1. Develop “cost models” for each element
2. Calculate the total life cycle cost
3. Generate useful reports




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      Relex Life Cycle Cost


               Reliability Data

 Relex                               Relex
             Maintainability Data
 LCC                                Project
Database          Cost, etc.        Database




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Relex Life Cycle Cost
Establishing the CBS...


A simple example:
 Total System Cost
     Research and Development Cost
     Investment Cost
     Operations and Maintenance Cost
     System Phaseout and Disposal Cost

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 Extending the CBS...

Operations and Maintenance Cost
     Operations Cost
         Operating Personnel Cost
         Operator Training Cost
         Operational Facilities Cost
         Support and Handling Equipment Cost
     Maintenance Cost
     System/Equipment Modifications Cost

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    Once CBS Established. . .


   Define equations for CBS items
   Operational Facilities Cost =

Operational facility space cost ($/sq. ft./site)
                       *
        Number of operational sites
                       *
   Facility space requirements (sq. ft.)


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Levels of Data in Relex LCC


        CBS
        Variables
        Alternatives
        Time Intervals



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           LCC Variables

   Store data pertinent to calculating cost
   Simplify entry of cost equations
   There are 3 types of Variables:
       Common variables
       Item variables
       Project variables
   Stored within variables files in LCC file
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        Project Independent Variables



   Common Variables
    “global variables”/applicable to all CBS items
   Item Variables
    “special variables”/applicable to specific CBS item




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       Project Variables


   Link LCC to data in Project file(s)
   May be inserted in cost equations
   Included automatically in each LCC file
   Example: Project Failure Rate


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          Alternatives

   Link LCC analysis to data in Project file(s)
   Determine most cost effective solution
   Example:
    Alternative #1: completely redesign a system
    Alternative #2: modify the current design
   Stored in Alternatives file w/i LCC file
   Allow for custom calculations
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               Time Intervals


   Consider costs in various time intervals
   Interval may be any unit of time
       Each interval represents an equivalent duration
       Example: 5 year period, 5 one year intervals




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       Time Intervals


   Define “interest rate” (or inflation rate)
   Determine Net Present Value (NPV)
   Incur costs now or later?




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         Variable Definition


   Constant
   Varies over Alternatives
   Varies over Time Intervals
   Varies over Alternatives & Time Intervals



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    Step-by-Step LCC Analysis

1. Create/open LCC file
2. Establish the Cost Breakdown Structure
3. Define Alternatives
4. Define Time Intervals
5. Define Variables
6. Enter cost equations for CBS items
7. Calculate and generate reports
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Relex Demonstration

								
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