RUL is computed from the OHI degradation rate observed over the assertion history, against the reference design life for this asset class. It is condition-based — a recovering OHI extends RUL; a declining OHI shortens it. No operator input is used.

MACP is a weighted probability model combining OHI baseline, trend direction, capital trigger breach count, and assessment duration. It is not an actuarial certificate. Pending calibration against Lloyd's loss tables for critical infrastructure.

Covenant thresholds are derived from OHI methodology standards. WATCH = OHI < 70, ALERT = OHI < 55, CRITICAL = OHI < 40. Capital trigger activates at ALERT or below. Lenders may negotiate tighter thresholds at origination.

Enter the estimated replacement capex above. The model will compute present-value cost of continued operation vs. immediate replacement, informed by RUL and MACP.