Twin Capsule

A Twin Registry identifies and locates digital machine representations across an asset hierarchy:

P-101 asset hierarchy

Enterprise
1. Fleet
  1. Plant
    1. System
      1. Machine
        Component

The registry locates the fictional P-101 machine and its component context without flattening the enterprise-to-component topology.

Each machine can own a Twin Capsule: a bounded, versioned record of identity, engineering metadata, sensor map, operating envelope, physics model, failure library, historical data, maintenance history, feature catalogue, experiment history, model registry, safety constraints, uncertainty, provenance, and documentation. The capsule is not the twin runtime itself. It is the traceable contract that tells a runtime, experiment, and reviewer exactly which representation was used.

The Phase 1 P-101 fixture populates only the typed records rendered below. Historical data, maintenance history, experiment history, model registry, and documentation remain conceptual categories; no record is claimed where none exists. Physics-model availability, limitations, and uncertainty are explicit in the capsule ledger.

P-101 anatomy

P-101 is a fictional centrifugal boiler feed water pump driven by an electric motor. Its capsule is TWIN-P101-0.1.0 and its asset hierarchy is Enterprise → Fleet → Plant → System → Machine → Component. The fixture defines eleven signals and six failure modes; those same identifiers are reused throughout this publication.

P-101 Twin Capsule

TWIN-P101-0.1.0

Asset identity

Asset ID: P-101
Asset: Boiler Feed Water Pump P-101
Type: Centrifugal Pump
Driver: Electric Motor
Description: Fictional centrifugal boiler feed water pump used only as a consistent Industrial Twin Lab demonstration asset.
Hierarchy: Enterprise → Fleet → Plant → System → Machine → Component
service: Boiler feed water
configuration: Single-stage centrifugal pump with electric-motor drive
designFlow: 240 m³/h
designHead: 112 bar

Features

pressure-ratioPressure RatioDischarge pressure relative to suction pressure.process; sources: suction-pressure, discharge-pressure
flow-per-speedFlow / SpeedFlow normalized by rotational speed.process; sources: flow, speed
power-per-flowPower / FlowElectrical power normalized by flow.process; sources: motor-power, flow
bearing-de-delta-ambientDE temperature delta ambientDrive-end bearing temperature above ambient.physics; sources: bearing-de-temperature, ambient-temperature
bearing-nde-delta-ambientNDE temperature delta ambientNon-drive-end bearing temperature above ambient.physics; sources: bearing-nde-temperature, ambient-temperature
vibration-rmsVibration RMSRMS vibration from bearing-housing measurements.vibration; sources: axial-vibration, radial-vibration
vibration-kurtosisVibration KurtosisDistribution-tail indicator for vibration change.vibration; sources: axial-vibration, radial-vibration
twin-residualTwin ResidualMeasured value minus digital-twin prediction.physics; sources: motor-power, flow, speed
rolling-mean-30mRolling Mean 30mThirty-minute rolling temperature mean.temporal; sources: bearing-de-temperature

Signals

Signal ID	Signal	Unit	Quantity	Location	Nominal fixture value
suction-pressure	suction pressure	bar	Pressure	Pump suction	2.6 bar
discharge-pressure	discharge pressure	bar	Pressure	Pump discharge	114 bar
flow	flow	m³/h	Volumetric flow	Discharge line	240 m³/h
motor-current	motor current	A	Electrical current	Motor control center	168 A
motor-power	motor power	kW	Electrical power	Motor control center	101 kW
speed	speed	rpm	Rotational speed	Motor shaft	2950 rpm
bearing-de-temperature	bearing DE temperature	°C	Temperature	Drive-end bearing	68 °C
bearing-nde-temperature	bearing NDE temperature	°C	Temperature	Non-drive-end bearing	64 °C
axial-vibration	axial vibration	mm/s RMS	Vibration velocity	Bearing housing	1.9 mm/s RMS
radial-vibration	radial vibration	mm/s RMS	Vibration velocity	Bearing housing	2.4 mm/s RMS
ambient-temperature	ambient temperature	°C	Temperature	Pump enclosure	28 °C

Operating envelope

flowMinimum: 180 m³/h
flowMaximum: 280 m³/h
suctionPressureMinimum: 2.2 bar
dischargePressureMaximum: 125 bar
ambientTemperatureMinimum: 5 °C
ambientTemperatureMaximum: 45 °C

Failure modes

bearing-degradationbearing degradationProgressive degradation of bearing condition.Affected signals: bearing-de-temperature, bearing-nde-temperature, axial-vibration, radial-vibration
impeller-degradationimpeller degradationLoss of hydraulic performance from impeller condition.Affected signals: flow, motor-power, discharge-pressure
cavitationcavitationVapour-cavity formation associated with inadequate suction conditions.Affected signals: suction-pressure, axial-vibration, radial-vibration
suction-restrictionsuction restrictionRestriction upstream of the pump inlet.Affected signals: suction-pressure, flow, motor-power
seal-leakageseal leakageLoss of process fluid at the pump seal.Affected signals: flow, discharge-pressure
motor-degradationmotor degradationReduced motor efficiency or electrical condition.Affected signals: motor-current, motor-power, speed

Model and uncertainty boundary

Physics model implementation: Not implemented
Model validation: Not validated in Phase 1
Availability statement: No physics model is implemented or validated in Phase 1.
Uncertainty status: Unquantified
Uncertainty statement: Uncertainty is unquantified because P-101 has no plant measurements or validated industrial evidence.

Limitations

P-101 values and relationships are synthetic teaching fixtures, not plant measurements or validated industrial evidence.
Read-only conceptual fixture; no operational technology connection exists.
No result authorizes automatic control or setpoint changes.

Safety constraints

Read-only conceptual fixture; no operational technology connection exists.
No result authorizes automatic control or setpoint changes.
Human engineering review is required before any physical-machine decision.

Provenance and disclosure

Asset version: ASSET-P101-0.1.0
Twin version: TWIN-P101-0.1.0
Source: Industrial Twin Lab fictional engineering fixture
Origin: Fictional / synthetic fixture

P-101 values and relationships are synthetic teaching fixtures, not plant measurements or validated industrial evidence.

Capsule record TWIN-P101. Every value shown is sourced from the canonical fictional P-101 fixture; the record grants no operational authority.

Fidelity is use-dependent

A Twin Capsule should not imply a perfect replica. A model adequate for testing a pressure-ratio feature may be inadequate for bearing-frequency diagnosis. Every capsule therefore declares its operating envelope, assumptions, uncertainty, and validation status. Changes to signal calibration, physics equations, failure mechanisms, or safety constraints require a new version; silently mutating a twin would invalidate prior Evidence Packages.

The registry makes assets discoverable, while the capsule makes their context reviewable. Later phases may allow capsule editing or API-backed storage, but the stable contract remains: an experiment references a specific asset and twin version rather than whichever data happens to be current.

Conceptual demonstration — synthetic fixture results. P-101 values are fictional engineering teaching fixtures, not plant measurements or validated industrial evidence.