PCA Reference Data and Services
Toggle Dark/Light/Auto modeToggle Dark/Light/Auto modeToggle Dark/Light/Auto mode

System control diagram (SCD)

A class with identifier http://rds.posccaesar.org/ontology/plm/rdl/PCA_100006479

MetadataThis section provides information about 'PCA_100006479' itself.

Source ontologynorsok-z001
CommentMain components of a sequence are: - Steps with associated actions; - Transitions with associated logic conditions; - Directed links between steps and transitions.

The sequential function chart may be presented on separate pages to avoid cluttering the main SCD.

The SCD’s shall be made per process system and supported by a functional specification.

NORSOK Z-001 rationaleSystem Control Diagram shall be used to specify and document process control and process shutdown application within the control systems.

The method consists in principle of two parts.

(1) Use of a defined set of function blocks, and (2) a diagram representation of usage of these function blocks and its interconnections.

The diagram has a presentation of the process as background. The content of multiple P&ID’s is simplified and combined into the SCD’s as the control and shutdown logic is laid out there.

System Control Diagrams shall be in accordance with the standard referred to in IEC 63131.

The SCD standard also covers sequential control.

NORSOK Z-001 interests stakeholder categoryinstrumentation engineering
NORSOK Z-001 describes structural elementCrude handling and metering
Separation and stabilisation
Jet fuel
Chemical injection
Fuel gas
Chlorination
Compressed air
Gas export and metering
Fresh water
Ballast water
Gas injection pipeline
Injection water pipeline
Fire water
Riser and well topside
Cooling medium
Oil storage
Drilling
Gas export pipeline
Closed drain
Gas compression and re-injection
Drilling drain
Flare
Sea water
Inert gas
Gas sweetening
Steam
Glycol / methanol regeneration
Sewage treatment
Chemical injection pipeline
Oil export line
Drilling control and monitoring
Heating medium
Drilling process
Subsea installation - maintenance and work over
Thruster and propulsion
Gas treatment
Well and riser subsea
Fire fighting
Emergency shutdown and blow down
Oily water
Methanol injection
Diesel oil
Gas conditioning
Hydraulic power
Wellstream pipeline
Water injection
Open drain
Fire and gas detection
Drilling well control
Loading
Lubrication oil
Condensate export line
NORSOK Z-001 definitionMain components of a sequence are: - Steps with associated actions; - Transitions with associated logic conditions; - Directed links between steps and transitions.

The sequential function chart may be presented on separate pages to avoid cluttering the main SCD.

The SCD’s shall be made per process system and supported by a functional specification.

skos:broadMatchsystem overview information
skos:broaderDiagram

ConstraintsThis section lists constraints that members of 'PCA_100006479' shall satisfy.

ContextThis section provides super- and subtypes as well as members of 'PCA_100006479'.