Repair Cost • Replacement CAPEX • Downtime • Reliability • Energy • Maintenance • Failure Risk • Residual Value • NPV • Lifecycle Cost
Marine Equipment Repair vs Replace, NPV & Lifecycle Cost Tool
Compare repairing existing shipboard machinery with replacing it using a discounted lifecycle model. Simple mode compares immediate cost, downtime, annual maintenance and expected life. Advanced mode adds energy/operating cost, failure probability, unplanned downtime, planned overhaul events, forced future replacement after repaired-life expiry, residual value, escalation, equivalent annual cost and sensitivity testing.
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Fast repair-vs-replace screen: 10 inputs.Simple assumes the repaired unit continues for the entered remaining life; if that life ends before the study horizon, replacement is required at that point using the entered replacement CAPEX. The replacement alternative is assumed to remain serviceable through the study horizon.CashImmediate repair vs replacement cost
OperationsDowntime + maintenance burden
EconomicsNPV lifecycle-cost comparison
Equipment Decision Snapshot
Million currency units.
Million, including removal/installation/commissioning.
Days of vessel contribution lost or operational disruption.
Currency/day.
Years.
Years before replacement is expected to become necessary.
Million/year.
Million/year.
Annual %.
Analysis Basis
Years.
Annual nominal/real basis should match the escalation assumptions.
%/year.
%/year.
Used only if the repair option reaches end of life inside the study period.
Repair Existing Equipment
Million.
Days.
Years. If shorter than study period, the model buys replacement equipment at expiry.
Million/year.
Million/year. Include only costs expected to differ between alternatives.
%/year expected probability.
Million/event.
Days/event.
Million, net of disposal cost. Usually zero if the repair option has already transitioned to replacement.
Replace Equipment
Million, including removal, installation and commissioning.
Days.
Years. If shorter than study horizon, repeat replacement events are modeled.
Million/year.
Million/year.
%/year expected probability.
Million/event.
Days/event.
Million, net of disposal cost.
Planned Major Maintenance / Overhaul Events
Enter only future events that differ materially between the two alternatives. Positive figures are cash costs. The same event year can contain different costs for Repair and Replace.
| Use | Year | Event / overhaul | Repair-option cost M | Replace-option cost M |
|---|
Engineering / Decision Checks
Engineering boundary: this is an economic and reliability planning screen. A lower lifecycle cost does not override equipment criticality, safe operating limits, class/statutory requirements, OEM restrictions, material condition, defect severity, obsolescence or redundancy requirements. Where repair is not technically acceptable, the economic comparison is secondary.