P&ID extraction for petrochemicals.
Petrochemical drawings come in trains. Cracker, separation, polymer. Each carries its own revamp history and its own redlines, and a complex routinely runs into the thousands of pages before utilities are counted.
What petrochemicals drawings carry.
- Cracker units carry BPCS regulatory loops and IEC 61511 SIS protective layers. Extracted and kept distinct
- Polymer P&IDs mix metric and imperial unit conventions. Line specs preserved as drawn
- Off-page connector matching across 50-200 page sets ties cross-train interlocks together
- Compressor strings, API 617 centrifugal, API 618 reciprocating carry vibration, temperature, and seal-system instrumentation as a dense sub-block
- Furnace and reactor effluent service drives high-temperature instrument selection, mineral-insulated thermocouples, skin TCs. Line list spec column captures the metallurgy break
- Olefins recovery sections run cryogenic. Hastelloy, austenitic stainless, and 9% nickel piping appear across the same set
- Pneumatic and electronic signaling coexist on legacy units. The I/O list flags pneumatic-only loops for modernization scoping
What the extraction delivers.
- I/O list with signal classification for the BPCS
- Separate SIS instrument index with SIL allocation
- Equipment list keyed to vessels, columns, exchangers, and pumps
- Line list with pipe spec breaks and service classification
- Revision comparison reports for MOC packages
- Marshalling and I/O-card count estimated from the signal-classified I/O list
Instrument tags on a petrochemicals drawing.
- FT-2103-AFlow transmitter, train 21, loop 03, redundant A
- PSV-4101Pressure safety valve, unit 41, line 01
- PSH-7250-1oo2Pressure switch high, voted 1-out-of-2, SIS service
- AT-3505Analyzer transmitter, typically online GC on cracker overhead
- TIC-5210Temperature indicating controller on a polymer reactor jacket loop
- ZSC-V-9012Block valve closed feedback on an emergency isolation service
Regulatory context.
- OSHA PSM 1910.119 covers covered processes and drives MOC discipline
- IEC 61511, ISA 84 governs SIS lifecycle and proof-test scheduling
- Local jurisdictional analogues, PSR in Canada, COMAH in the UK add equivalent documentation requirements
Which discipline reads it.
Controls EngineersBPCS and SIS instrumentation across cracker, separation, and polymer trains. Signal-class plus SIS prefix separation enforced on the I/O list.Process EngineersMass and energy balance across furnace, reactor, and separation sections. Line-spec breaks tied to service and metallurgy transitions.Piping and Mechanical EngineersHigh-temperature alloy piping classes, Hastelloy, austenitic stainless, 9% nickel cryogenic. Rotating-equipment density on compressor strings.Functional Safety EngineersIEC 61511 SIS lifecycle on hydrocracker, alkylation, and ethylene scope. Voting architecture preserved on PSH, PALL pairs.
Common questions
Can Tagsight handle 200-page P&ID sets typical of a petrochemical complex.
Yes. Pages process in parallel and off-page connectors are matched across the set. Review can begin on the first pages while later pages are still working.
Does the output separate BPCS from SIS.
Yes. Signal class plus SIS tag prefix, PSH, PSL, PALL, PAH, PSV separates regulatory loops from protective ones. SIS rows export to a separate workbook sheet.
How are compressor and turbine package drawings handled.
Rotating-equipment packages process alongside the main process drawings. Vibration, axial-position, bearing-temperature, and seal-pressure tags extract under ISA 5.1 or the operator's house convention. Vendor symbology that diverges flags more rows for review.
Can the extraction respect a phased turnaround scope.
Workspaces scope the extraction to a unit or area. Run each phase as a separate workspace, then roll up the documents into a complex-wide register at handover.
What about legacy pneumatic-loop documentation.
Pneumatic signaling is captured under ISA 5.1 line conventions and flagged via the signal class column. Modernization projects use this filter to scope which loops need replacement transmitters before a new DCS or PLC is energized.
Run it on your petrochemicals drawings.
Upload a P&ID set and see the instruments, equipment, and lines it reads before committing to a plan.