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

Physical plant

Site, plant, area and unit: where things physically are.

ZRFReference LNG Terminalsiteno items
- ZRF-P1LNG Train 1 and utilitiesplantno items
  - A-10Inlet and receptionareano items
    - U-11Inlet separationunit7 items
    - U-12Condensate exportunit28 items
  - A-20Liquefactionareano items
    - U-21Main cryogenic exchangeunitno items
  - A-30Utilitiesareano items
    - U-31Cooling waterunit8 items
    - U-32Instrument air and nitrogenunit5 items
    - U-33Electrical distributionunit2 items

Items in U-12

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

Assets in U-12
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
E-1216	Condensate export cooler	equipment	U-12	—	Unverified
F-1205	Condensate export strainer	equipment	U-12	—	Unverified
PT-1201	Condensate export discharge pressure	instrument	U-12	—	Unverified
PT-1202	Condensate export header pressure	instrument	U-12	—	Unverified
TT-1203	Condensate export temperature	instrument	U-12	—	Unverified
LT-1210	Surge drum level	instrument	U-12	—	Unverified
LIC-1210	Surge drum level controller	instrument	U-12	—	Unverified
FT-1204	Condensate export flow	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
HV-1202	Condensate export header 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
XV-1205	Condensate export shutdown valve	valve	U-12	—	Unverified
12-CD-1201-150-A1A	Condensate export pump A discharge	line	U-12	ZRF-TP-001	Unverified
12-CD-1202-150-A1A	Condensate export header	line	U-12	ZRF-TP-001	Unverified
12-CD-1203-100-A1A	Surge drum level control line	line	U-12	ZRF-TP-001	Unverified
12-CW-1210-100-C1C	Cooling water supply to condensate export cooler	line	U-12	ZRF-TP-002	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
E-1217	Condensate export cooler B (register only, drawn on no sheet)	equipment	U-12	—	Unverified

U-12 in the other structures

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.

Commissioning systemsspans 3

SYS-12-0119 items
SYS-12-028 items
SYS-31-011 item

Test packsspans 2

ZRF-TP-0018 items
ZRF-TP-0021 item
not placed19 items

Four structures, never merged

Test packs that span units

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

ZRF-TP-002U-31, U-12

Where a boundary comes from

A drawn boundary is never an approved one. Why

System boundaries