As-Built Engineering

Isometric Drawing Generation

Fabrication-ready isometrics generated from LiDAR + verified P&ID line list.

Every spool, every weld, every fitting · captured in survey-grade LiDAR, extracted into ISO 6428-compliant isometric drawings, ready for fabrication shop or replacement-in-kind. 3,000+ km of piping has flowed through this pipeline for refineries, petrochem plants, and pharma sites in our roster.

Why this matters

Why missing isometrics cost you 3-6 weeks every shutdown

When a flange leaks, an elbow corrodes, or a pipe support fails · you need the isometric. The original construction isometrics are missing 30-50% of the time in brownfield plants. The MOC modifications are rarely documented. Field measurement + redraw takes 3-6 weeks · time your shutdown can't afford. We rebuild your isometric set from LiDAR · every line, every spool, ASME B31.3-compliant, fabrication-ready, indexed to your line list. Next time something fails, the isometric is in the file.

Method

How we deliver Isometric Drawing Generation

CEng MIE India-signed deliverables · LiDAR-powered where applicable · digital twin handover ready · routes to the As-Built Engineering practice lead within 24 hours.

Scan + line list reconciliation

Point cloud classified by line. Reconciled against P&ID line list (updated or legacy). Each line has a tag, service, design pressure / temperature, MOC.

Spool extraction

Automated spool extraction from point cloud · pipe segments, elbows, tees, reducers, flanges, valves identified geometrically + verified by manual QC.

Isometric generation

ISO 6428 + ASME B31.3 + ISO 4067 compliant isometrics generated. North arrow, sheet boundaries, BOM, weld map, support locations all per your site standard.

Bill of Materials + MTOs

Automated BOM extraction · pipe size + schedule + MOC + flanges + fittings + valves + supports. Material take-offs ready for procurement.

Fabrication-ready handover

Output in DWG / DXF / PDF / IFC. Linked to line list, P&ID, and 3D model. CEng MIE-signed for fabrication release.

Standards + compliance

Built to the standards your auditors quote

Reports reference the international and national standards your regulators, F500 audit teams, and corporate process safety leads cite. Every deliverable signed by a Chartered Engineer (CEng MIE India).

ISO 6428 · Technical drawings · Requirements for microcopying
ASME B31.3 · Process Piping
ASME B31.1 · Power Piping
ISO 4067 · Industrial pipework drawings (graphical symbols)
API RP 574 · Inspection Practices for Piping System Components

Anonymous case anchors

What this looks like in production

Three anonymised engagements from our verified roster · quantified outcomes, no client names disclosed without written permission.

Refinery, India · 240 km piping rebuilt

Rebuilt 240 km of piping isometrics for crude distillation unit. Avoided 6-week turnaround prep delay. Fabrication-shop-ready output.

Petrochem, KSA · MOC backlog clearance

1,800 MOC modifications were on field redlines but never on isometrics. Closed the backlog in 14 weeks.

Pharma, Singapore · GMP-validated isometric set

USP-grade pharma utility piping. Isometrics validated per GMP commissioning protocol.

Frequently asked

Isometric Drawing Generation · the practical questions

Do you do manual measurement or LiDAR?

LiDAR for any meaningful brownfield scope. Manual measurement is too slow, too inaccurate, and unsafe in operating plants. LiDAR is 8-12x faster, 1-2 mm accuracy, and works during live operation.

What software outputs do you support?

AutoCAD (DWG / DXF), SmartPlant Isometrics, AVEVA Isodraft, Plant3D, Bentley OpenPlant, IFC for digital twin handover. Other formats on request.

Can you generate weld maps?

Yes · weld locations identified geometrically + verified, indexed in BOM, weld numbering per your site protocol. Useful for inspection planning and NDT history tracking.

How fast can you turn around?

Throughput is ~5-10 km of isometrics per week from a fully scanned + classified point cloud. A 50 km unit: ~5-10 weeks. Add 2-3 weeks if scanning is included in scope.

Does this support shutdown planning?

Critical input. Fabrication shop needs isometrics 6-8 weeks before TAR. We routinely deliver isometric sets to TAR contractors for replacement-in-kind work.

Scope your Isometric Drawing Generation engagement.

Tell us your plant, region, and scope · a named Chartered Engineer responds within 24 hours.

4 fields. No phone interview to start.
Per-discipline routing to the As-Built Engineering practice lead.
Anonymous case anchors sent with first reply.
Same-day callback for deadline-driven enquiries.

As-Built Engineering Scoping

P&ID + Iso + SLD + GA · LiDAR-powered · routes to As-Built Practice.