P2
1
E3D-APAM-RPT-002 · Board Condition Report · Board 29 of 67
DB-D7W
Apron field-lighting board
Status: In_progress · Condition Index 11.2/100
1. Verdict & suitability
Assessment summary
Can house the new LED luminaires & controlsYES — universal
BasisLED load ≪ legacy HID; enclosure space & isolation adequate
Overall condition ratingRED — Major defect
P3
0
P4
0
Photos
4
0Condition Index 11.2100
Rated RED. The board can house the new LED works. Field condition records non-compliant working-space clearance.
2. Location
| GPS (lat, long) | -37.667891, 144.847069 |
| Zone / apron | To be confirmed against apron key-plan |
| Upstream source (parent DB / sub) | To be confirmed against airfield reticulation drawings |
| Inspected | 21–22 June 2026 |
3. Supply & electrical
As-built supply and cabling recorded on site. Visual / physical condition audit only — no electrical testing performed.
| Incoming supply & earthing | |
|---|---|
| Supplied from | Sub 42 |
| Upstream feeder | DB-Apron Highmast Floodlight DB (Sub 42) |
| Upstream CB | C63A 3P (iC60H) |
| Upstream CB way(s) | ESS 2, 4, 6 / NE 26, 28, 30 |
| Sub-main cable size | 25mm² 4C+E |
| Phases | 3-phase |
| Line voltage | 400 V (L-L) |
| Phase-earth voltage | 230 V (L-N) |
| Earthing system | Reticulated |
| Upstream protection | Isolator only (no OCPD confirmed at board) |
| Supply cable schedule | |
|---|---|
| Active conductor size | 25 mm² |
| Configuration | 1x4C |
| Conductor arrangement | circular |
| Parallel sets | 1 |
| Conductor material | Copper |
| Insulation / type | XLPE |
| Armour | Unarmoured |
| Installation method | Underground Enclosure |
| Conduit | 100 mm |
| Loaded circuits in conduit | 1 |
| Estimated depth | 0.5 m |
| Earth arrangement | Integral — 6 mm² |
| Approx. length | Not recorded |
4. Condition assessment
Scored per the Condition Scoring & Rating Model (six standards-referenced dimensions, 0–4 on the P-scale). Rating is gated — a single safety/structural P2 breach sets RED regardless of the averaged Index.
| Dimension | Score | Grade | Observation |
|---|---|---|---|
| Electrical safety & compliance | 0 | None observed | None observed |
| Structural & enclosure integrity | 0 | None observed | None observed |
| Corrosion & protective coating | 0 | None observed | None observed |
| Ingress protection | 0 | None observed | None observed |
| Access & working space | 3 | Major / safety (P2) | Door opening arc and working-space clearance |
| Thermal / fire & component | 0 | None observed | None observed |
Rationale. The gated rating is RED, driven by a non-compliant door / working-space clearance (AS/NZS 3000 Cl 2.10) (Condition Index 11.2/100). RED reflects a gate breach — a safety/structural P2 or an AS/NZS 3000 Cl 2.10 clearance non-compliance — that cannot be averaged away.
5. Defects
Field-observed defect(s) for this board, itemised into discrete findings — each with its own priority and category.
| Ref | Category | Defect | Pri |
|---|---|---|---|
| D-01 | Clearance | Non-compliant door / working-space clearance | P2 |
6. Suitability for the LED works
Suitability for LED worksYES
The new LED floodlight load and driver footprint are materially smaller than the legacy HID gear removed, and the existing 3-phase supply, 25 mm² feed and cabinet isolation are adequate for the new works. This conclusion is universal across the fleet and is independent of condition.
7. Photographic evidence
4 site photographs. Frames outlined in orange are keyed to a priority defect (fire, structural, access or ingress evidence).
