B.1.2:5 - Archetypal Grounding (Worked Cases)

B.1.2:5.1 - Pump Skid

A pump skid may be one exact entity proposed for recognition under the already admitted U.System kind. Pumps, frame, valves, controller, and connectors become its components only when their exact A.14 part-relation occurrences obtain and C.13 grounds the assembly; the proposal, drawing, and component list establish none of those facts.

The power grid, maintenance crew, telemetry dashboard, and supplier are not skid components merely because the skid depends on them. Recover the exact systems or epistemes and their supply, work, telemetry, publication, source-use, or other direct relations. If a maintenance-isolation decision needs their joint organization, an A.22 selected structure may include the exact obtaining crossings without turning them into parts.

Concrete coordination result. In an illustrative component-inventory case, skid S is already recognized under A.1. Inspection and assembly evidence have established the A.14 component relations of pump P, frame F, valve V and controller C to S, with the C.13 assembly basis. The inventory is complete for this example. A documented electrical-supply relation has grid G as source and S as receiver; dashboard D is an episteme describing S. These independently supplied facts are the inputs to the decision, not conclusions inferred from the drawing.

For the question “Which of these objects belongs in S’s component inventory?”, B.1.2 returns P, F, V and C, retaining each part relation’s basis. G remains an external supply participant and D remains a description. The inventory establishes no total mass, reliability or safe-isolation conclusion: each would need its own characteristic rule or decision basis. If inspection instead leaves V’s part relation unresolved, return the three established components and that specific gap; do not present the inventory as complete. Changed assembly or supply facts reopen the affected result.

B.1.2:5.2 - Resistor In A Circuit

A resistor symbol in a circuit diagram is a functional or design-description element. The physical bearer may be a packaged resistor, a length of wire, a transistor region, or a module. Recover the exact function, bearer, allocation or correspondence, and any part relation separately; B.1.2 only coordinates them for the current circuit decision.

B.1.2:5.3 - Digital Twin Of A Building Asset

A BIM model, asset register, dashboard, or digital twin may describe the built asset and its systems. It is not the asset’s part by being linked in a model. Use architecture-description, publication, evidence, source-use, representation, and naming patterns for the description side; use exact part-relation patterns only for admitted system parts of the built asset.

B.1.2:5.4 - Lathe And Workpiece

The lathe can change the workpiece through a bounded transformation and work occurrence. Those facts do not make the workpiece a lathe component or make the lathe the larger whole containing it. Use A.3.4, A.15.1, A.12, and the exact crossing or participation pattern; use part-whole only when an exact relation independently obtains.