03 — The Pilot

Digital X-Ray LCA simulator.

A live, deterministic 3-pillar model of one X-Ray room at Luz Saúde. Tweak the inputs, switch data-availability strategies, and watch the engine recompute — including its own confidence in the answer.

Layer A

Consumables · Short-Cycle

Consumable weight8 g

Data availability

Layer B

Use Phase · Operational

Scan time12 s

Active power rating45 kW

Layer C

Capital Equipment · Long-Cycle

Machinery purchase price€180,000

Expected lifetime scans250,000

Equipment data-gap strategy

X-Rays performed1,000

Switching to EEIO or disassembly proxies degrades the confidence score in real time — exactly what the engine reports in production.

Per intervention

180 gCO₂e

vs 320 g benchmark

Total · 1,000 scans

179.7 kgCO₂e

across the modeled period

Endpoint · DALYs

25.151 µDALY

human-health burden equivalent

Data confidence

94%

High — primary-data dominated

Live lifecycle formula

Equipment Impact per Scan

OEM EPD

\text{Equipment Impact per Scan} \;=\; \frac{\text{Estimated Embodied Footprint}}{\text{Total Expected Lifetime Scans}} \;+\; \left(\text{Power Rating in kW} \times \text{Scan Time in Hours}\right)

Embodied footprint

22,000 kgCO₂e

OEM EPD reference

Capital per scan

88.0 gCO₂e

÷ 250,000 scans

Use-phase energy

0.1500 kWh

45 kW × 0.00333 h

Breakdown · gCO₂e per scan

Consumables62 g

Use phase29 g

Capital88 g

By GHG Protocol scope

Scope 1 · Direct emissions0 gCO₂e

Scope 2 · Purchased energy29 gCO₂e

Scope 3 · Value chain150 gCO₂e

Data confidence score

94%High

Framework Summary

How each lifecycle layer is computed

Lifecycle Component	What is Calculated	Preferred Primary Data	Proxy / Top-Down Workaround
Consumables (Short-Cycle)	Mass of plastics/metals, factory sterilization, hazardous incineration.	Manufacturer BOMs, direct utility data.	Physical weighing + standard polymer database proxies (e.g., ecoinvent).
Use Phase (Operational)	HVAC air-changes, surgical lighting, clinical water, instrument sterilization.	Direct sub-metering of the operating room; clinic-specific logbooks.	Scaling national hospital energy benchmarks down to specific duration.
Capital Equipment (Long-Cycle)	Embodied manufacturing footprint divided by lifetime use + active/standby electricity.	OEM EPDs; direct power-metering of active/idle cycles.	EEIO models using purchase price; total machinery weight-to-material scaling rules.

Consumables (Short-Cycle)

What is calculated: Mass of plastics/metals, factory sterilization, hazardous incineration.
Preferred primary data: Manufacturer BOMs, direct utility data.
Proxy workaround: Physical weighing + standard polymer database proxies (e.g., ecoinvent).

Use Phase (Operational)

What is calculated: HVAC air-changes, surgical lighting, clinical water, instrument sterilization.
Preferred primary data: Direct sub-metering of the operating room; clinic-specific logbooks.
Proxy workaround: Scaling national hospital energy benchmarks down to specific duration.

Capital Equipment (Long-Cycle)

What is calculated: Embodied manufacturing footprint divided by lifetime use + active/standby electricity.
Preferred primary data: OEM EPDs; direct power-metering of active/idle cycles.
Proxy workaround: EEIO models using purchase price; total machinery weight-to-material scaling rules.