Preventive Maintenance
Preventive Maintenance Schedule by Calendar/Cycles
The preventive maintenance schedule by calendar and cycles is a software system stored on radiation-hardened NOR flash memory that automates servicing routines across 200 equipment items. Consuming 0.5 W of power, the program initiates interventions based on elapsed time or accumulated operating cycles, working in tandem with predictive maintenance metrics. Sustaining hardware over extreme operational horizons requires deterministic servicing schedules alongside authenticated tuning updates. Engineered for high-reliability lunar infrastructure, the system operates across a 100-year design lifetime with a mean time between failures of 500,000 hours to ensure uninterrupted equipment availability.
Preventive maintenance schedule based on calendar time or operating cycles — complementing RUL-based predictive maintenance.
Purpose
Preventive maintenance schedule based on calendar time or operating cycles — complementing RUL-based predictive maintenance.
Context
Child of L2-MNT-SCHED within the Lunar Ark system
Principles
- ▸Per-equipment PM intervals
- ▸Calendar + cycle-count triggers
- ▸Coordinated with L3-MNT-PRED predictive
- ▸Long-mission PM interval tuning
- ▸Per OEM recommendations
Typical implementations
- ▸Industrial preventive maintenance (terrestrial)
- ▸Aircraft maintenance schedules
- ▸ISS PM heritage
Lunar considerations
- ▸Long-life equipment benefits from PM
- ▸Coordinated with predictive maintenance
- ▸Authenticated PM updates
Specifications
Functional
| primary function | Preventive maintenance schedule based on calendar time or operating cycles — complementing RUL-based predictive maintenance. |
| pm equipment count | 200 |
Physical
| mass kg | 0 |
| materials | Code on rad-hard NOR flash |
| vacuum compatibility | True |
Operational
| power consumption w | 0.5 |
| thermal range c | -40, 70 |
| lifetime years | 100 |
| mtbf hours | 500000 |
Interfaces
Provides
- PM tasks queued
Requires
- Cycle/calendar counters
Cite this entry
Lunar Ark Codex. "Preventive Maintenance" (L3-MNT-SCHED-PREV). Retrieved 10 September 2026, from https://lunarark.com/entry/L3-MNT-SCHED-PREV
Licensed CC-BY-SA 4.0. You may reuse and adapt this entry with attribution, under the same licence.