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 ontology | norsok-z001 |
| Comment | Main components of a sequence are:n - Steps with associated actions;n - Transitions with associated logic conditions;n - Directed links between steps and transitions.nnThe sequential function chart may be presented on separate pages to avoid cluttering the main SCD. nnThe 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.nnThe method consists in principle of two parts.nn(1) Use of a defined set of function blocks, andn(2) a diagram representation of usage of these function blocks and its interconnections.nnThe 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.nnSystem Control Diagrams shall be in accordance with the standard referred to in IEC 63131.nnThe SCD standard also covers sequential control. |
| NORSOK Z-001 interests stakeholder category | instrumentation engineering |
| NORSOK Z-001 describes structural element | Drilling |
| Drilling process | |
| Drilling well control | |
| Riser and well topside | |
| Drilling control and monitoring | |
| Drilling drain | |
| Well and riser subsea | |
| Subsea installation - maintenance and work over | |
| Separation and stabilisation | |
| Crude handling and metering | |
| Gas compression and re-injection | |
| Gas treatment | |
| Gas conditioning | |
| Gas export and metering | |
| Gas sweetening | |
| Water injection | |
| Oil export line | |
| Condensate export line | |
| Gas export pipeline | |
| Oil storage | |
| Injection water pipeline | |
| Chemical injection pipeline | |
| Wellstream pipeline | |
| Gas injection pipeline | |
| Glycol / methanol regeneration | |
| Loading | |
| Cooling medium | |
| Heating medium | |
| Chemical injection | |
| Flare | |
| Oily water | |
| Fuel gas | |
| Methanol injection | |
| Chlorination | |
| Sea water | |
| Ballast water | |
| Fresh water | |
| Steam | |
| Open drain | |
| Closed drain | |
| Thruster and propulsion | |
| Jet fuel | |
| Diesel oil | |
| Compressed air | |
| Inert gas | |
| Hydraulic power | |
| Sewage treatment | |
| Lubrication oil | |
| Fire and gas detection | |
| Fire water | |
| Fire fighting | |
| Emergency shutdown and blow down | |
| NORSOK Z-001 definition | Main components of a sequence are:n - Steps with associated actions;n - Transitions with associated logic conditions;n - Directed links between steps and transitions.nnThe sequential function chart may be presented on separate pages to avoid cluttering the main SCD. nnThe SCD’s shall be made per process system and supported by a functional specification. |
| skos:broadMatch | system overview information |
| skos:broader | Diagram |