System control diagram (SCD)
A class with identifier
http://rds.posccaesar.org/ontology/plm/rdl/PCA_100006479
Source ontology | norsok-z001 |
Comment | Main 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 rationale | System 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 category | instrumentation engineering |
NORSOK Z-001 describes structural element | Crude 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 definition | Main 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:broadMatch | system overview information |
skos:broader | Diagram |