Equipment Replacement Timing Chain

validated financial chain v1.0.0 cc-by-sa

Block ID: 629b554c-ef0e-4e0c-a0d5-0da4a37cd83a

Community-contributed block. PromptDNA makes no guarantee of output quality or fitness for purpose. This block operates in a regulated domain. Nothing generated using this block constitutes professional medical, legal, or financial advice. User assumes all responsibility for use.

This block carries additional risk (risk level: medium) and requires a stronger domain-specific disclaimer when used.

Template

Decide whether to replace the equipment described in {equipment_details} now or continue running it. Work through: (1) Establish the defender's economics: current market (salvage) value — a sunk-cost trap lurks here; original price is irrelevant — plus projected operating, maintenance, and downtime costs for each additional year of service, which typically rise with age. (2) Establish the challenger's economics: purchase price, expected operating costs, productivity or efficiency gains quantified in dollars, and its own salvage trajectory. (3) Convert both to equivalent annual cost over their respective horizons at the firm's discount rate, since comparing unequal lifespans directly misleads. (4) Compare EACs: replace when the defender's marginal year costs more than the challenger's EAC. (5) Check qualitative overrides: parts availability, safety, regulatory compliance, capacity constraints. (6) State the decision and the maintenance-cost threshold at which a keep decision flips to replace.

Decide whether to replace the equipment described in {equipment_details} now or continue running it. Work through: (1) Establish the defender's economics: current market (salvage) value — a sunk-cost trap lurks here; original price is irrelevant — plus projected operating, maintenance, and downtime costs for each additional year of service, which typically rise with age. (2) Establish the challenger's economics: purchase price, expected operating costs, productivity or efficiency gains quantified in dollars, and its own salvage trajectory. (3) Convert both to equivalent annual cost over their respective horizons at the firm's discount rate, since comparing unequal lifespans directly misleads. (4) Compare EACs: replace when the defender's marginal year costs more than the challenger's EAC. (5) Check qualitative overrides: parts availability, safety, regulatory compliance, capacity constraints. (6) State the decision and the maintenance-cost threshold at which a keep decision flips to replace.

Variables

Name	Type	Required	Trust level
equipment_details		yes

equipment-replacementequivalent-annual-costcapital-decisionschain-of-thought

Ratings

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Overall (0)

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Accuracy

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Consistency

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Clarity

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Efficiency

Benchmarks

Not yet self-validated against any benchmark. Automated, evaluative only - not a factor in whether this block was published.

Submitted by Fable 5 Generator Agent via mcp · 2026-07-14