Congested plants punish vague scan plans. Pipe racks overlap, equipment runs, access changes by shift, permits have narrow windows, and the most valuable connection may sit behind insulation or a temporary scaffold. A no-surprises plan treats operations, safety, geometry, control, and deliverables as one coordinated job.
Artec describes Jet as a mobile SLAM LiDAR mapper suited to industrial spaces, with handheld, backpack, vehicle, robot, drone, and pole-related deployment options. Its active LiDAR can collect geometry without ambient light, and the manufacturer lists IP65 ingress protection and an operating range from 14 to 113 degrees Fahrenheit. Site classification, hazardous-location rules, permits, and approved-equipment requirements still govern whether and how any electronic device can enter an area.
Hold an operations-first kickoff
The plant representative, safety lead, field lead, survey lead, and deliverable owner should walk the scope together. The kickoff names operating units, boundaries, access points, process hazards, exclusion zones, lockout or isolation status, escorts, PPE, communications, emergency actions, allowable equipment, work hours, and simultaneous operations.
The team also defines what the capture supports: general facility record, tie-in planning, clash review, equipment replacement, floor flatness, pipe modeling, digital twin context, or a regulated inspection. Each purpose creates a different completeness standard. A general context cloud may tolerate hidden small-bore piping that would be unacceptable for a tie-in package.
Divide the plant into capture cells
Break the scope into cells that can be entered, captured, reviewed, and closed as logical units. Good boundaries follow levels, structural bays, rooms, process units, or equipment systems. Each cell receives an identifier, priority, access condition, required features, control, route, expected occlusions, and fallback.
| Cell field | Example | Why it matters |
|---|---|---|
| Operational state | Running, isolated, outage-only | Controls timing and permits |
| Geometry priority | Tie-in flanges and valve access | Drives viewpoints and detail passes |
| Route family | Grade loop plus mezzanine loop | Provides closure and coverage logic |
| Known shadow | Behind vessel and under rack | Triggers infill method |
| Acceptance evidence | Checkpoints and completeness images | Closes the cell before demobilization |
Map hazards onto the route
The route drawing should include more than geometry. Mark traffic, overhead work, hot surfaces, noise, chemical exposure, energized equipment, fall edges, restricted egress, confined spaces, classified areas, and muster routes. A field operator must never be drawn into looking at a preview while walking through an uncontrolled hazard.
For permit-required confined spaces in construction, OSHA requires employers to prevent unauthorized entry, identify and evaluate hazards before entry, define acceptable entry conditions, isolate hazards, and implement a permit-space program. General-industry rules may apply to operating facilities. The plant’s competent safety personnel determine the controlling requirements; a scanner plan cannot authorize entry.
Design for congested geometry
A central aisle pass can connect the plant but will leave deep shadows behind vessels, ducts, cabinets, and pipe banks. Plan opposing passes, elevation changes, short branches, and loops through connecting aisles. Capture tie-ins from several useful angles and include adjacent structural references so designers can understand location and access.
The sensor’s listed 360 by 290 degree field of view helps broad coverage, yet every solid object still blocks what lies behind it. A pole can lift the viewpoint over a guardrail; a backpack may improve long routes; a robot may enter an approved zone without a walking operator; a handheld pass may reach a tight branch. Each mode change is logged and joined through overlap and control.
Write an occlusion register
The field lead keeps an occlusion register by cell. Each entry names the missing feature or area, reason, operational impact, proposed infill, status, and approving person if accepted as excluded. A red mark on a plan is more useful than a vague note that coverage was limited.
- Temporary obstruction: coordinate a return after material or scaffold movement.
- Permanent obstruction: add another height or direction and describe the residual shadow.
- Unsafe access: use an approved remote mode or retain the exclusion.
- Hidden process content: use plant records or another inspection method with clear provenance.
- Feature too fine for the validated workflow: arrange targeted measurement or close-range capture.
Control coordinates and asset identity
Plant coordinate systems can be local, rotated, legacy, or inconsistent between units. The survey lead documents horizontal and vertical references, units, established control, transformation, and any relationship to owner grids. Control used for adjustment remains separate from checkpoints used for independent evaluation.
Asset identity belongs in the capture plan too. Record equipment tags, line numbers, room or level, and cell identifiers in field notes. If labels cannot be photographed or read, coordinate with the owner’s asset list. Geometry without identity can be surprisingly hard to use in facility management.
Run the shift in checkpoints
The pre-job briefing confirms the permit, operational state, route, escort, communications, equipment approval, and stop-work conditions. At each cell, the crew verifies access and control, captures the core loop, adds priority branches, reviews the live preview, logs occlusions, and closes the cell. Raw data are checked before moving beyond practical recovery distance.
Environmental notes should include dust, steam, rain or washdown, reflective surfaces, vibration, moving vehicles, and process changes. Artec’s environmental ratings describe the product; the site safety lead decides whether conditions are acceptable and what protection is required.
Process and release by cell
Processing preserves raw data and records trajectory review, loop handling, control, transformations, filtering, clipping, and exports. Evaluate independent checkpoint residuals spatially. Then review priority features and the occlusion register at useful zoom and cross-sections. Closing cells progressively allows an infill crew to return while access knowledge is fresh.
The handoff includes a master registered point cloud, agreed lightweight or clipped files, coordinate report, cell map, route and coverage map, checkpoint results, processing record, file manifest, occlusion register, capture conditions, and limitations. If BIM or CAD modeling follows, identify which cells and features are approved as modeling sources.
A plant scan is ready when every priority feature is observed, supplemented, or explicitly carried as an accepted exclusion.
The thrill of mobile capture is watching a complex facility become coherent. The professional win is quieter: operations had no surprise, the crew stayed inside the permit, the office can trace every cell, and the designer knows where the cloud is complete.