CoatingPassport · schema v1.1Demo · Power pylon

DEMO-PYLON-T-4218 — Coating Passport

Annual drone inspection of a 420 kV HV suspension tower (commissioned 1978, 60 m height). Cross-arm galvanizing loss at 68% with active red-rust; lower main-leg L-3 section loss at 12%. Conductor-attachment bird-nest noted for line-maintenance crew. Foreign-object findings demonstrate the broad coverage.

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Condition Risk Index

indicative · fully traceable

54.5high/ 100 · evidence conf 88 %

Axes

Surface54.5

Structure—

Performance—

Indicative commercial signal

Insurance premium multiplier

×1.3 – ×1.84

Annual fuel penalty (ISO 19030)

— (no performance value)

Top drivers — every point traces to a finding or metric

severe coating_breakdown+5.415
moderate corrosion+1.967
minor foreign_object+0.503

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

3 findingsVLM hullproof-vlm-v2.1.3, mean confidence 83 %modeled
Inspection duration1200 sdeclared
Frames analysed36,000measured

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-PYLON-T-4218
Type: Power pylon
Material: galvanized_steel
Operator: Demo TSO

Inspection

Timestamp: Wed, 22 Apr 2026 13:00:00 GMT
Footage source: drone
Duration: 20 min
Frames analyzed: 36,000
Operator tier: enterprise_user
Model version: hullproof-vlm-v2.1.3

Findings summary (3)

critical

severe

moderate

minor

Findings detail

coating breakdown

confidence 91%312 framesimg-quality 85%severe

Hot-dip galvanizing loss estimated 68% across cross-arm north members. Active red rust visible — base steel exposed.

Location: Cross-arm 1, north side, members M14-M22 (0, 0, 22)

Recommended action: Schedule on-tower zinc-rich-paint touch-up within 12 months. If progression continues, plan tower-level re-galvanization at next outage window.

corrosion

confidence 83%198 framesimg-quality 79%moderate

Section loss estimated 12% on lower main leg L-3 below galvanizing breakdown zone. Within IEC 60652 + Statnett-spesifikasjon monitoring threshold.

Location: Main leg L-3, lower section (0, 0, 14)

Recommended action: Trend at next annual inspection; coordinate UT measurement at next planned line outage.

foreign object

confidence 74%12 framesimg-quality 68%minor

Bird nest fragment lodged at conductor attachment. No structural concern; flagged for line-maintenance crew awareness.

Location: Cross-arm 1, conductor attachment (1, 0, 25)

Recommended action: Removal at next planned outage.

Compliance

EU AI Act class: high_risk_ai_system
Review workflow: Pending

Applicable standards

• IEC 60652 (Loading tests on overhead line structures)
• EN 50341 (Overhead electrical lines exceeding AC 1 kV)
• IEEE 691 (Guide for transmission structure foundation design)
• NACE SP0198 (Control of corrosion under thermal insulation and fireproofing materials)
• Statnett Tekniske spesifikasjoner — luftledninger

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.