Channel pipeline defects · illustrative 3D review
DEMO-CI-ILI-001 · External metal loss · illustrative shape
250.0 mm OD × 7.9 mm WT X52 · assumed · km 4.5 · GW 1020
Wall loss drawn ×3 so it is visible. Drag to orbit, scroll to zoom.
Representative smooth geometry, not an actual ILI scan or field reconstruction. Width defaults to an invented 50 mm; external/internal location is not supplied by this saved record. Neither display choice changes the axial metal-loss calculation. Colour indicates drawn remaining wall, not an operating risk classification.
Assumed depth projection · from 28 October 2026
Depth = saved run3_depth_pct + assumed growth × years, capped at 100% for plotting only. No repair deadline, remaining-life claim or statutory threshold is inferred.
Screening formula and applicability limits
Reuses the existing Modified B31G implementation: flow stress = SMYS + 68.95 MPa, effective area factor 0.85, z = L²/(D×t); Folias factor M = √(1 + 0.6275z − 0.003375z²) for z ≤ 50, otherwise 0.032z + 3.3. MPa × 10 = bar. The implementation rounds pressure to 0.01 MPa and floors it at 0.5 MPa. FPR = calculated pressure / saved maop_mpa. No generic acceptance or repair threshold is applied.
The 2% WT/year starting rate is an uncalibrated browser assumption, not a fitted rate from these runs. Projection dates start at 28 October 2026, not today. Missing inputs and projected depths ≥95% are not evaluated; do not extrapolate a capped curve as safe. Interaction, cracks, dents, seams, toughness, cyclic duty, uncertainty and actual repair acceptance are excluded. The accountable engineer must determine method applicability and the approved integrity criteria.
Saved source and accountable verification
- Record
- 6ae23fbde1248ff3d456e283
- Feature
- DEMO-CI-ILI-001
- Pipeline
- DEMO · Marsden Point–Wiri
- Clock position
- 05:30
- Coating / soil
- Unknown · verify coating record / NZ corridor · soil study required
- Dig status
- not_planned
- Saved field UT depth
- Not supplied
- Latest update
- 2026-10-28T18:32:29.828000
DEMO · synthetic Channel scenario at 2026-10-28. Not actual telemetry, survey geometry, inspection evidence or design data. Assumed matched runs 2018-10-28 / 2022-10-28 / 2026-10-28; diameters, grade, SMYS, wall and feature dimensions are synthetic. No field dig verification supplied.
The pipeline integrity engineer must confirm vendor matching, material / dimension certificates, the pressure basis and field NDT before deciding on an intervention. Excavation requires approved location, access, isolation and permits; no map or visualisation here locates a real feature. After work, an independent competent verifier must accept repair QA and the approved inspection / test results before operations authorises return to service; retain signed evidence and update the integrity plan.
Open this feature in the ILI register