Safety Protocol 001: Scanner Operation and Calibration Safety¶

Protocol ID: U11M2-SAFE-001

Potential Hazards¶

Projector intensity: Structured light scanners use high-intensity LED or DLP projectors. Direct prolonged viewing of the projected pattern at close range can cause eye discomfort and temporary afterimages
Laser exposure: Laser triangulation scanners (Class 2 or higher) emit focused laser beams. Class 2 lasers (< 1 mW) are eye-safe with the blink reflex; Class 3R (1-5 mW) and above require laser safety eyewear and formal training
Infrared components: Some scanners use IR projectors invisible to the naked eye — the absence of visible light does not mean the beam is safe

Scanning spray/powder: Aerosolized dulling sprays (AESUB, Attblime, generic) contain propellants (butane, propane), carrier solvents, and fine particulates (titanium dioxide, talc). Inhalation causes respiratory irritation; skin contact may cause dryness
Isopropyl alcohol: Used for cleaning scanning spray from objects post-scan. Flammable, causes eye irritation, dries skin with repeated contact
Adhesive residue removers: Solvents used to remove reference target adhesive may contain acetone or similar VOCs

Handheld scanning: Sustained arm elevation (holding scanner at object height) causes shoulder, wrist, and forearm fatigue. Sessions longer than 15-20 minutes increase repetitive strain risk
Repetitive mouse/keyboard: Extended software sessions during alignment and processing cause carpal tunnel risk
Standing fatigue: Scanning sessions may require prolonged standing at the workstation

Turntable pinch points: Motorized turntables can pinch fingers caught between the rotating platform and the base or fixture
Equipment falls: Scanners on tripods or boom stands can topple if improperly balanced or bumped
Calibration target fragility: Glass or ceramic calibration panels shatter if dropped, creating sharp fragment hazards
Cable trip hazards: USB, power, and data cables running between scanner, turntable, and computer

Inspect all cables for damage — frayed power cords, cracked USB connectors, or exposed wiring must not be used
Verify scanner is on a stable surface or securely mounted on tripod — tighten all clamps and locks
Confirm turntable weight limit — weigh object before placing on turntable if uncertain
Route cables along walls or tape to floor to eliminate trip hazards
If using scanning spray: verify ventilation (open window, fume hood, or spray outdoors) before application
For Class 3R+ laser scanners: post laser warning signs, restrict area access, and distribute appropriate laser safety eyewear to all personnel in the scan area
Clean calibration targets with microfiber cloth only — never use solvents or abrasive materials

Never stare directly into the scanner projector or laser output during operation
Keep fingers clear of the turntable platform edge during rotation — use software start/stop controls
Do not reach into the scanning area while the scanner is actively capturing
When handheld scanning: take 5-minute breaks every 15-20 minutes; alternate arms if possible
Maintain clear workspace — no drinks, tools, or loose objects near the scanner or turntable
If the scanner or object appears unstable at any point, stop the scan immediately and re-secure

Power down scanner, turntable, and associated equipment before disconnecting cables
Store scanner with lens covers and in protective case
Clean scanning spray residue from objects using isopropyl alcohol in ventilated area; wear nitrile gloves
Remove reference target adhesive residue from objects with appropriate solvent; verify material compatibility first
Store calibration targets in padded case — never stack loose or face-down
Dispose of empty scanning spray cans per local aerosol disposal regulations (do not puncture or incinerate)

Look away from source immediately; close eyes
If symptoms (spots, blurred vision, discomfort) persist beyond 5 minutes, seek medical evaluation
For Class 3R+ laser exposure: seek immediate medical evaluation regardless of symptoms
Report incident; identify root cause (missing eyewear, equipment malfunction, procedure violation)

Move to fresh air immediately
If dizziness, coughing, or breathing difficulty persists, seek medical attention
If using spray in an enclosed area, evacuate and ventilate before re-entry
Consult product SDS for specific first aid instructions

Eyes: Flush with eyewash for 15 minutes; do not rub; seek medical attention
Skin: Wash with soap and water for 5 minutes; apply moisturizer for solvent-dried skin
Consult product SDS for specific guidance

Stand clear — do not attempt to catch falling equipment
After the equipment has settled, check for broken glass (calibration targets, lens elements)
Do not use damaged equipment — report to instructor for inspection
Clean up any glass fragments with dustpan and brush (not bare hands)

PPE Item	Specification	When Required
Safety glasses	ANSI Z87.1 rated	When applying scanning spray; recommended during all scanning operations
Laser safety eyewear	OD rated for scanner wavelength (check spec sheet)	Required for Class 3R and above laser scanners
Nitrile gloves	Disposable	When handling scanning spray, IPA, adhesive removers, or freshly sprayed objects
N95 respirator	NIOSH-approved	When applying scanning spray in enclosed or poorly ventilated areas
Anti-fatigue mat	Cushioned standing mat	Recommended for sessions longer than 30 minutes
Closed-toe shoes	Sturdy, non-slip	Always in the scanning lab

Last Updated: 2026-03-19