Maintenance & Repair
Upkeep of assets and infrastructure
Bundle → Layer → Finding → Questions Incomplete
3 bundles · 7 layers · 0 findings · 0 questions
assetCondition Knowing the state of the asset
conditionAssessment
inspections and measured condition
failureMode
defects, degradation patterns and their causes
program Deciding and ordering upkeep
maintenancePlan
strategies, intervals and triggers per asset class
workOrder
authorized, scheduled maintenance tasks
intervention Doing the work and its effect
maintenanceAct
performed inspection, service or repair
conditionDelta
before and after condition change
sparePartUsage
parts and materials consumed
Note: Legacy card: layers named, findings and questions never written.
Classifiers Filled
- Family
- World Models
- Category
- Activities and processes
- Entry kind
- standalone-mm
- Navigation path
- NAV.ACT.MNT
- Domain
- ACT.MNT
- Industry
- Cross-industry
- Tags
- maintenanceact.mnt
- Also called
- K11
What it is Derived, awaiting review
This meta-model describes the upkeep of assets and infrastructure: knowing the condition of a thing, planning its maintenance, ordering the work, performing it and recording the change in condition that resulted.
Note: First sentence of the legacy card introduction.
Why it exists Filled
Upkeep of assets and infrastructure
Distinguishing features Derived, awaiting review
- It is its own model because upkeep is a standing relationship between an agent and an asset over the asset's whole life, with its own vocabulary of condition, failure, work order and intervention that neither generic acts (K2) nor services (K4) carry.
What robots and AI may and may not do Missing, in the backlog
Not described yet. This gap is in the card backlog.
Moral aspects Missing, in the backlog
Not described yet. This gap is in the card backlog.
Owners Filled
Steward
The asset owner owns the maintenance record; a contracted operator holds delegated write access for the assets it services.
Links to other meta-models Filled
extends
- world.actAction - maintenance acts specialize the atomic act with condition effect
references
- world.ownership - the asset and its owner are resolved through the ownership register, never duplicated here
- world.planAndSchedule - maintenance intervals and windows bind to schedules
- world.practiceMethodAndProcedure - task procedures behind work orders
- world.service - contracted maintenance delivered as a service offering
- world.organization - contracted operators and part suppliers
imports
- iso-55000 - ALIGN: asset management vocabulary and lifecycle framing
- en-13306 - ALIGN: maintenance terminology for acts, strategies and failures
requires
- vr.wm-act-004
- vr.wm-act-009
- vr.wm-pol-014
What else AI and robots need to interact with it Incomplete
Identity and identifiers required Derived, awaiting review
- sparePartUsage: material consumed in an act; key attributes: part identifier, quantity, source lot, cost basis
Direct properties not applicable Not applicable
Not applicable
Institutional or informational subject: no invented physical properties.
Recognition optional Missing, in the backlog
Not described yet. This gap is in the card backlog.
Capabilities and actions required Derived, awaiting review
- assessmentPerformed: an asset's condition was inspected and graded
- defectDetected: a fault was found and logged
- workOrderIssued: a maintenance task was authorized and scheduled
- maintenanceCompleted: an intervention finished with findings recorded
- conditionDeltaRecorded: the before and after state change was captured
- partReplaced: a component was exchanged during an intervention
- assetReturnedToService: the asset resumed operation after work
Legacy events listed as state transitions.
Hazards and failure modes optional Missing, in the backlog
Not described yet. This gap is in the card backlog.
Standards and interfaces required Derived, awaiting review
- maintenanceServiceAgreement: an owner engages a contracted operator to maintain defined assets to a plan and response times
- conditionDataSharing: condition histories are shared with insurers, buyers or engineers under the owner's terms
- warrantyClaimSupport: acts, parts and deltas for a covered asset are disclosed to a warrantor for a claim
- assetHealthDashboard: current condition grades and open defects across a portfolio; omits work order internals
- backlogView: open and overdue work orders by priority; omits historical acts
- historyLog: the full intervention and condition record of one asset; omits other assets
Context of use required Filled
- All access flows from owner grants under the catalogue's ownership and access models (S1/S2), with audit via S4.
Sources Missing, in the backlog
Not described yet. This gap is in the card backlog.
Open questions
- Superseded by a researched world model? Map this legacy card to its successor or retire it.
Machine files
Provenance
legacy MMAS card (world-models v0.2) · legacy
Built from: models/world-k11-maintenance-and-repair/spec.yaml, models/docs/activity-work/K11-maintenance-and-repair.md