P&ID extraction for water and wastewater.
Sequential capital programs leave drawings of mixed vintage on the same site. A SCADA upgrade, a plant expansion, an industrial reuse retrofit, and the prior decade's package-plant commissioning packs all live in the same controlled archive.
- Classified I/O list with AI, AO, DI, DO per instrument
- Equipment list. Pumps, basins, tanks, filters, blowers, chemical feeders
- Line list with size, pipe spec, and service
- Process variable inference from letter codes, ISA 5.1, AWWA M2, EN 752, in-house
- Valve details with fail position and actuator type
- Revision comparison for change documentation
- Exports to TIA Portal, Studio 5000, PLCCreator, DEXPI, Excel, annotated PDF
- Municipal P&IDs run simpler than industrial P&IDs, fewer SIS tags, lighter loop density but carry decades of in-house tagging variation
- Package skids interface with the plant PLC through discrete signal lists, run, fault, mode. The skid interface signals extract from the main P&ID
- Free-text annotations, "Flow Meter Type. Magnetic" extract into the description field. Signal class follows the ISA letter code
- SCADA tag databases, Wonderware, Ignition, Siemens WinCC, GE iFix accept the Excel export columns. TIA Portal and Studio 5000 use the direct XML, L5X exports
- Pump-station SCADA upgrades cover dozens of remote sites with thin per-site drawings. A workspace per site rolls up into a utility-wide register
- Disinfection drawings, chlorine gas, sodium hypochlorite, UV, ozone carry analyzer and dosing-pump density. Surface as a service-filtered subset
- Industrial water reuse and ZLD plants overlap with chemical-plant patterns more than municipal treatment. RO trains, softener regen loops, and evaporator-crystallizer scope follow process-plant tagging
- MBR and granular-activated-sludge plants carry tighter loop density than conventional activated sludge
- US Safe Drinking Water Act and Clean Water Act drive monitoring documentation
- EU Drinking Water Directive and Urban Waste Water Treatment Directive set the equivalent EU regimes
- State or provincial environmental regulators audit instrument-list as-builts as part of permit compliance
- AWWA M2 is the reference manual for instrumentation and control in water utilities
Which discipline reads it.
Controls EngineerControls EngineersInfluent, secondary treatment, and disinfection instrumentation. SCADA across lift stations and remote pumping sites.Process EngineerProcess EngineersAeration, clarifier, and disinfection scope. Chemical-feed loop integration. Nutrient-removal flow control.Electrical EngineerElectrical EngineersPump and blower MCC galleries. Standby-generator and emergency-power scope. UV-disinfection power distribution.Project EngineerProject EngineersPlant-expansion and SCADA-upgrade phase handover with brownfield drawing reconciliation.
FT-INF-1101Flow transmitter on plant influent, area 11, loop 01AT-CL-2305Analyzer transmitter for chlorine residual, area 23, loop 05LT-CL2-4108Level transmitter on a clarifier, area 41, loop 08FCV-DOSING-7102Flow control valve on a chemical-dosing skid, area 71AT-UV-INT-5202UV intensity sensor on a disinfection bankFT-RAS-3401Return activated sludge flow on a secondary clarifier underflow line