← Back to catalogue
TODO

Spare Part

vr.wm-obj-011 · wm-obj-011-spare-part

Replaceable parts identified by part number and approved for use in specific equipment.

World Models Physical world and living systems PHY.OBJ.PRT
Bundle → Layer → Finding → QuestionsClassifiersWhat it isWhy it existsDistinguishing featuresWhat robots and AI may and may not doMoral aspectsOwnersLinks to other meta-modelsIdentity and identifiersDirect propertiesRecognitionCapabilities and actionsHazards and failure modesStandards and interfacesContext of useSources

Bundle → Layer → Finding → Questions Filled

3 bundles · 3 layers · 6 findings · 12 questions

Part definition What the part is and where it fits.

Part number and fit

The part type with its manufacturer number and the equipment it fits.

Part type

A part number with manufacturer, description and revision.

  1. Which manufacturer part number and revision identifies this part?
  2. Which equipment models and positions is the part approved for?

Interchangeability

Alternative and superseding parts that may replace it.

  1. Which alternative or superseding part numbers are approved as replacements?
  2. Is the replacement fully interchangeable or only one way?
Stock and supply Where parts are held and how they are obtained.

Inventory and sourcing

Stock levels, locations, suppliers and lead times.

Stock position

Quantities on hand by location with their condition.

  1. How many units are on hand at which locations, and in which condition?
  2. What minimum stock level is set for critical equipment?

Authentic supply

Supplier, lead time and evidence of authenticity.

  1. Which approved supplier provides the part, and with what lead time?
  2. Is a certificate of conformity or traceability to the original manufacturer available?
Lifecycle How parts age, are fitted and become obsolete.

Shelf life, installation and obsolescence

Shelf life, installation records and obsolescence notices.

Fitness for use

Shelf life and storage history of a stocked item.

  1. Does the part have a shelf life, and is it still within it?
  2. Was the part stored under the conditions the manufacturer requires?

Obsolescence

Discontinuation notices and last-time-buy decisions.

  1. Has the manufacturer announced discontinuation of this part?
  2. Is there a last-time-buy date or an approved alternative?

Classifiers Filled

Family
World Models
Category
Physical world and living systems
Entry kind
standalone-mm
Navigation path
NAV.PHY.OBJ.PRT
Domain
PHY.OBJ.PRT
Industry
Cross-industry
Tags
sparepartphy.obj.prt

What it is Filled

A spare part is a replaceable component held or supplied to restore an asset to working condition, identified by part number and approved for use in specific equipment. The class covers the part type, its interchangeability and the stocked or installed items of it; consumables used up in operation and whole equipment units are outside the class.

Why it exists Filled

Replaceable parts identified by part number and approved for use in specific equipment.

Distinguishing features Filled

  • A spare part is held to restore an asset, unlike a consumable that is used up in normal operation.
  • Approval for use depends on part number, revision and equipment fit, not just physical similarity.
  • It differs from the as-built assembly record, which shows which serialized part is installed where.
  • Interchangeability and supersession chains are part of the subject.

What robots and AI may and may not do Filled

Must not

  • Substitute a part that is not approved for the equipment and position.
  • Accept parts without traceability where the equipment is safety-critical.
  • Release expired or improperly stored parts for installation.
  • Change interchangeability records without engineering approval.

Only with a human decision

  • Approving an alternative or non-original part for safety-critical equipment.
  • Deciding a last-time-buy or large stock investment.
  • Quarantining or scrapping suspected counterfeit parts.

May

  • Look up approved part numbers and alternatives for a piece of equipment.
  • Monitor stock levels and propose reorders below set minimums.
  • Track shelf life and flag expired items.
  • Report obsolescence notices that affect installed equipment.

Moral aspects Filled

  • Counterfeit or wrong parts in safety-critical equipment can injure or kill people.
  • Restricting access to spare parts can prevent owners and independent repairers from repairing equipment.
  • Holding spare parts extends product life and reduces waste.

Who is affected

  • Equipment operators and users
  • Maintenance technicians
  • Owners and independent repairers
  • Manufacturers and suppliers

Owners Filled

Steward

The maintenance or materials manager of the organization that operates the equipment, working with the original manufacturer for part data.

Master systems

  • Enterprise asset management systems
  • Inventory and warehouse management systems
  • Manufacturer parts catalogues

Links to other meta-models Filled

references

  • world-m6-equipment-and-machinery - Spare parts are approved for and fitted to equipment described there.
  • world-k11-maintenance-and-repair - Maintenance work consumes spare parts from stock.

neighbor

  • wm-obj-012-assembly-instance-as-built-bom - The as-built record shows which serialized part is installed where.

What else AI and robots need to interact with it Filled

Identity and identifiers required Filled

  • A part type is identified by manufacturer part number and revision, often mapped to a buyer's internal material number.
  • Individual units of serialized parts carry serial numbers; packaged parts may carry GS1 GTINs.
  • Classification codes such as ECLASS or UNSPSC group part types.

Direct properties required Filled

  • Dimensions in millimetres and mass in kilograms, measured against the drawing tolerances.
  • Material and hardness or other material properties where the specification requires them.
  • Shelf life in months from the date of manufacture for age-sensitive parts such as seals and adhesives.
  • Storage temperature in degrees Celsius and relative humidity in percent where the manufacturer sets limits.

Recognition required Filled

  • A part is recognized by its marking or label with part number, manufacturer and, where present, serial number.
  • Often confused with look-alike parts of another revision, with counterfeits or with consumables.

Capabilities and actions required Filled

  • Restores an asset to working condition when fitted in the approved position.
  • Can be substituted by approved alternatives when the original is unavailable.
  • Can be tracked from receipt through storage to installation.

Hazards and failure modes required Filled

  • Equipment failure from counterfeit, wrong or degraded parts.
  • Extended downtime when critical spares are out of stock or obsolete.
  • Injury during handling of heavy or sharp parts.

Standards and interfaces required Filled

  • ISO 8000 for part master data quality.
  • S2000M for material management in aerospace and defence logistics.
  • ECLASS and UNSPSC for product classification.

Context of use required Filled

  • Used in maintenance of machinery, vehicles, aircraft, plant and consumer products.
  • Some jurisdictions require manufacturers to make spare parts available for a set period to support repair.

Sources Filled

  1. ISO 55000 Asset management - Overview, principles and terminology, ISO
  2. ISO 8000 Data quality, ISO
  3. S2000M International specification for material management, ASD and AIA

Open questions

  • Planned model: boundary questions, research and every section remain to be written.

Machine files

Card as JSON Specification AGENTS.md Card backlog vercy.card/1

Provenance

planned (registry candidate) · todo

Built from: models/runtime-index.json, ver-cy/world-models/card-supplements/wm-obj-011-spare-part.json

Planned entry, hidden from the catalogue until researched.