P2
1
E3D-APAM-RPT-002 · Board Condition Report · Board 21 of 67
DB-NthApron-Ess
Northern apron board
Status: In_progress · Condition Index 30/100
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
2
P4
1
Photos
6
0Condition Index 30100
Rated RED. The board can house the new LED works. Field condition records significant structural / enclosure damage and corrosion to fixings and bars.
2. Location
| GPS (lat, long) | -37.667670, 144.844707 |
| 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 LV MSB (Essential) |
| Upstream CB way(s) | Q14 |
| Phases | 3-phase |
| Line voltage | 400 V (L-L) |
| Phase-earth voltage | 230 V (L-N) |
| Earthing system | Reticulated |
| Upstream protection | Not confirmed |
| Supply cable schedule | |
|---|---|
| Active conductor size | 95 mm² |
| Configuration | 4x1C |
| Conductor arrangement | trefoil |
| Parallel sets | 1 |
| Conductor material | Unknown |
| Insulation / type | UNKNOWN |
| Armour | Unknown |
| Installation method | Unknown |
| Conduit | — |
| Loaded circuits in conduit | — |
| Estimated depth | — |
| Earth arrangement | Separate — 35 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 | 3 | Major / safety (P2) | Enclosure & chassis mechanical integrity |
| Corrosion & protective coating | 3 | Major / safety (P2) | Corrosion of fixings, bars and coatings; general fouling |
| Ingress protection | 0 | None observed | None observed |
| Access & working space | 0 | None observed | None observed |
| Thermal / fire & component | 0 | None observed | None observed |
Rationale. The gated rating is RED, driven by structural / enclosure damage and corrosion to fixings and bars (Condition Index 30/100). 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 | Structural | Safe-T chassis — structural chassis integrity concern | P2 |
| D-02 | Corrosion | Severe rust to door mechanism and enclosure | P3 |
| D-03 | Housekeeping | Internal dust / dirt accumulation | P4 |
| D-04 | Corrosion | Minor pitting to enclosure / structure | P3 |
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, 95 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
6 site photographs. Frames outlined in orange are keyed to a priority defect (fire, structural, access or ingress evidence).
