Plant hierarchy

Four structures over the same assets. They deliberately do not line up, and the page keeps them apart.

Demonstration project - no figure here describes a real facilityChanges are not saved

Why

Each tree is built from the project's own hierarchy nodes, and the item counts are the assets actually placed in each node.

Writes are validated against the engineering rules and then refused, because no database has been configured for this environment.

Physical plant

nodes

Commissioning systems

nodes

Test packs

nodes

Handover packages

nodes

Commissioning systems

System and subsystem: how the plant is commissioned, which does not follow the physical layout.

SYS-12Condensate export systemsystemno items
- SYS-12-01Export pumps and dischargesubsystem19 items
- SYS-12-02Export meteringsubsystem8 items
SYS-31Cooling water systemsystemno items
- SYS-31-01Cooling water circulationsubsystem9 items

Every asset placed in this node, whichever hierarchy placed it.

Assets in SYS-12-01
Tag	Description	Class	Unit	Test pack
P-1201A	Condensate export pump A	equipment	U-12	ZRF-TP-001	Unverified
P-1201B	Condensate export pump B (spare)	equipment	U-12	ZRF-TP-001	Unverified
V-1210	Condensate surge drum	equipment	U-12	ZRF-TP-001	Verified
F-1205	Condensate export strainer	equipment	U-12	—	Unverified
PT-1201	Condensate export discharge pressure	instrument	U-12	—	Unverified
LT-1210	Surge drum level	instrument	U-12	—	Unverified
LIC-1210	Surge drum level controller	instrument	U-12	—	Unverified
PSH-1201	Condensate export high pressure switch	instrument	U-12	—	Unverified
HV-1201	Condensate export discharge isolation	valve	U-12	ZRF-TP-001	Unverified
LCV-1210	Surge drum level control valve	valve	U-12	—	Unverified
PSV-1210	Surge drum relief valve	valve	U-12	—	Unverified
CV-1201	Condensate export pump A non-return	valve	U-12	—	Unverified
12-CD-1201-150-A1A	Condensate export pump A discharge	line	U-12	ZRF-TP-001	Unverified
12-CD-1203-100-A1A	Surge drum level control line	line	U-12	ZRF-TP-001	Unverified
M-1201A	Condensate export pump A motor	equipment	U-12	—	Unverified
M-1201B	Condensate export pump B motor	equipment	U-12	—	Unverified
C-60101	MCC-6001 to M-1201A power cable	cable	U-12	—	Unverified
C-60102	MCC-6001 to M-1201B power cable	cable	U-12	—	Unverified
C-60201	Instrument multicore to JB-1201	cable	U-12	—	Unverified

The same items, placed by each hierarchy in turn. Where a node's items land in more than one place, the structures disagree about this node.

Physical plant

Test packs

Four structures, never merged

Ordinary, and the reason a single tree cannot express this project.

A drawn boundary is never an approved one. Why