The second step after the Replacement Model has been created, is the Replacement Model Prioritization. On this frame you can select and define the replacement factors for your replacement model. There are a total of eleven factors to choose from.
Select Replacement Factors
To select a factor, enter a weighted value in the Weight field for each replacement factor you want to include in your model. The value entered in this field represents the percentage, out of 100, that the factor will have in the calculation for the unit’s Priority Ranking on the Replacement Model Candidates frame.
As an example, you may want to use the units’ Age (Months in Service), LTD Repairs, Maintenance Cost Per Use, and Condition as your factors. For your organization, two most important of the four factors may be Age and Condition, so you might want to weight each at 30%. Then you could weigh LTD Repairs at 25% and Maintenance Cost Per Use at 15% for a total of 100%.
It is up to you to decide which factors to include and what value (%) to assign them in the replacement model. Once you have selected your factors and assigned them values, click the Save button.
Scores
The scores are calculated based on a factor multiplied by 100. If the resulting number is over 100, it is above average (worse) and if it is below 100 it is below average (better).
Once each score is calculated it is then weighted by the percentages/factors set on this frame. For a break down of how each is calculated, see below:
Age = (unit_replacement.mo_in_serv / category_trend.avg_mo_in_service) * 100
LTD Utilization score = ((unit_replacement.ltd_usage * unit_replacement.loc_usage_factor) / category_trend.avg_ltd_usage) * 100
LTD Repair = (unit_replacement.ltd_maint_cost / category_trend.avg_ltd_maint_do) * 100
Capital Return = ((unit_replacement.ltd_maint_cost / unit_replacement.capital_cost) / (category_trend.avg_ltd_maint_dt / category_trend.avg_capital_do)) * 100
Operating Downtime = (unit_replacement.oper_downtime / unit_replacement.ltd_usage) / (category_trend.avg_oper_downtime / category_trend.avg_ltd_usage)) * 100
Maintenance Downtime = ( (unit_replacement.maint_downtime / unit_replacement.ltd_usage) / (category_trend.avg_maint_downtime / category_trend.avg_ltd_usage)) * 100
Reliability = ((unit_replacement.wo_count / unit_replacement.mo_in_serv) / (category_trend.avg_breakdown / category_trend.avg_mo_in_service)) * 100
Maintenance Cost Per Use = ((unit_replacement.ltd_maint_cost / unit_replacement.ltd_usage) / (category_trend.avg_ltd_maint_do / category_trend.avg_ltd_usage)) * 100
Fuel Consumption Per Use = ( (unit_replacement.fuel_consumption / unit_replacement.ltd_usage) / (category_trend.avg_fuel_consumption / category_trend.avg_ltd_usage)) * 100
Oil Consumption Per Use = ((unit_replacement.oil_consumption / unit_replacement.ltd_usage) / (category_trend.avg_oil_consumption / category_trend.avg_ltd_usage)) * 100
Condition = unit_dept_comp_main.condition
NOTE: The counts and averages on this frame will not be shown until you have generated the Replacement Model.
To move on to the Replacement Model Generation frame, click the Advance to the Next Step of the Replacement Model Generation (Blue Arrow) icon from the more options drop down to the right of the find button. This will move the model into a Prioritization status.
System Flags
5100 - Replacement Modeling Age Calculation Method (I/M) – When set to ‘I’, use the unit In-Service date when calculating age. When set to ‘M’, use the unit Manufacturer date when calculating age.
Additional Resources
For more information and a rundown of the entire replacement model process see the Replacement Modeling Overview Reference Guide.
Last Update: 06/06/2016
NOTE: To view a list of System Flags and Role Privileges that may impact this screen, hover over the screen title in M5 to display the bubble help/tooltip. At the bottom of the bubble help/tool tip, there is a Settings hyperlink. Click that hyperlink to display the list of flags and privileges.
Additional training and technical documents on this subject may be available in the Resource Files area.