CoatingPassport · schema v1.1Demo · Bridge section

DEMO-BRIDGE-SECTION-S3 — Coating Passport

Drone-based hovedinspeksjon per Håndbok V441 of a 110 m steel-concrete composite span (built 1986). Underside box-girder section loss at 24% drives engineering critical assessment; 2.1 mm concrete deck crack exceeds NS-EN 1992-1 immediate-review threshold. Public-infrastructure asset class with full EU AI Act-class tagging.

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Condition Risk Index

indicative · fully traceable

76.2severe/ 100 · evidence conf 88 %

Axes

Surface76.2

Structure—

Performance—

Indicative commercial signal

Insurance premium multiplier

×1.52 – ×2.15

Annual fuel penalty (ISO 19030)

— (no performance value)

Top drivers — every point traces to a finding or metric

severe corrosion+5.538
severe crack+4.994
moderate delamination+1.967
moderate coating_breakdown+1.871

Every point of `index` traces to a finding_id or SHM metric in `drivers`; recompute the same passport to reproduce. Indicative only — Hullproof sets no premium and takes no risk; this is the signal a market prices against.

Data provenance

how each number was obtained

4 findingsVLM hullproof-vlm-v2.1.3, mean confidence 86 %modeled
Inspection duration7200 sdeclared
Frames analysed216,000measured

Measured = read from a sensor / instrument / file header. Estimated = derived from a proxy. Modeled = AI / algorithm output. Declared = operator-supplied. Nothing is presented as stronger than its provenance.

Asset

Asset ID: DEMO-BRIDGE-SECTION-S3
Type: Bridge section
Material: mixed
Operator: Demo veivesen
Inspection cycle: Annual hovedinspeksjon

Inspection

Timestamp: Fri, 08 May 2026 08:00:00 GMT
Footage source: drone
Duration: 120 min
Frames analyzed: 216,000
Operator tier: enterprise_user
Model version: hullproof-vlm-v2.1.3

Findings summary (4)

critical

severe

moderate

minor

Findings detail

corrosion

confidence 92%412 framesimg-quality 86%severe

Section loss estimated 24% on primary box-girder web plating below drainage outlet. NCHRP Report 833 CS-3 (severe), approaching CS-4 (load-posting trigger).

Location: Underside of box girder, midspan, drainage outlet (65, -2, -4)

Recommended action: Engineering critical assessment for load capacity. Plan composite-FRP wrap reinforcement; redirect drainage to prevent further damage.

crack

confidence 87%67 framesimg-quality 82%severe

Concrete crack 2.1 mm width at expansion joint approach. Above NS-EN 1992-1 immediate-review threshold; chloride ingress risk in marine environment.

Location: Concrete deck top, expansion joint approach slab (32, 0, -2)

Recommended action: Crack injection within 30 days; replace expansion joint seal; revise inspection cycle to 6-monthly until stabilized.

delamination

confidence 83%198 framesimg-quality 79%moderate

Concrete delamination 3.4 m² on south pier cap face. Audible by ROV-impact-thump; consistent with corroding rebar.

Location: Pier cap concrete, south face (55, 2, -1)

Recommended action: Patch repair scoping per NS-EN 1504; investigate rebar condition with cover-meter survey.

coating breakdown

confidence 81%247 framesimg-quality 77%moderate

Coating system breakdown estimated 18% across box-girder external surfaces. Beyond touch-up threshold; approaching full repaint scoping per NS-EN ISO 12944.

Location: Steel box-girder external surfaces, full span (0, 0, 0)

Recommended action: Plan full repaint within 2 inspection cycles. Coordinate with structural-repair campaign for cost efficiency.

Compliance

EU AI Act class: high_risk_ai_system
Review workflow: Pending

Applicable standards

• AASHTO Bridge Inspector's Reference Manual (BIRM)
• AASHTO Manual for Bridge Element Inspection
• NCHRP Report 833 (Element Condition State 1-4)
• Eurocode EN 1993 (Steel structures)
• Eurocode EN 1992 (Concrete structures)
• Statens vegvesen Håndbok V441 (Bru-inspeksjon)
• ISO 16311 (Maintenance and repair of concrete structures)
• ASTM E2270 (Steel bridge inspection)

Interoperability

Cognite CDF compatible: Yes
OSDU mapping: —
Veracity export: Not exported
Knowledge graph: Not generated

The same JSON powers Cognite CDF Asset+Timeseries, OSDU exports, RDF knowledge graphs, and MCP-tool calls from agentic systems. PDF is a renderer of this; never the source.