Torque Audit Cycle

The Cartagena Protocol went live on 2003-09-11. That timestamp is the bedrock beneath every bolt we tighten, every seal we press, every breath we draw in the dome. This is not poetry. This is the sequence that holds.

Effective Date2003-09-11
Pressure Differential (ΔP)≥ 25 Pa
Leakage Rate≤ 0.3% / sol
Fastener Torque140 ft-lbs (star pattern)
Seal ClassBSL-4 Equivalent
Close-up of an industrial pressure gauge dial showing precise measurement markings

14-Week Integrity Drill

We run this on the court, then in the dome. Same rhythm. Same stakes.

Week 1–2: Baseline Calibration
Objective: Verify all pressure transducers against NIST-traceable standard.
Verification: Zero-drift confirmation within ±0.5 Pa.
Week 3–4: Star-Pattern Torque
Objective: Apply 140 ft-lbs to all primary hatch fasteners using calibrated wrench.
Verification: Mark each bolt head with torque-seal paint; record serial number.
Week 5–6: Leak Simulation
Objective: Induce controlled micro-fracture in non-critical panel.
Verification: Detection system triggers within 12 seconds; patch protocol executed.
Week 7–8: Thermal Stress Test
Objective: Ramp internal temp to +45°C delta while maintaining ΔP ≥ 25 Pa.
Verification: Expansion joints show no shear displacement > 0.1 mm.
Week 9–10: Vacuum Hold
Objective: Sustain external vacuum for 72 hours.
Verification: Pressure decay rate ≤ 0.001 Pa/hr.
Week 11–12: Crew Rotation Lockdown
Objective: Simulate emergency seal during EVA crew transition.
Verification: Inner/outer door interlock engages in < 8 seconds.
Week 13–14: Full Systems Handoff
Objective: Junior crew executes full audit without senior override.
Verification: Final pressure signature matches baseline within tolerance.