P2
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E3D-APAM-RPT-002 · Board Condition Report · Board 1 of 67
DB-Mast-11-E1E
High-mast floodlight board
Status: Complete · Condition Index 18.8/100
1. Verdict & suitability
Assessment summary
Can house the new LED luminaires & controlsYES — universal
BasisLED load ≪ legacy HID; enclosure space & isolation adequate
Overall condition ratingAMBER — Defects logged
P3
0
P4
4
Photos
13
0Condition Index 18.8100
Rated AMBER — Defects logged. The board can house the new LED works.
2. Location
| GPS (lat, long) | -37.670522, 144.847467 |
| 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 | DB-CCE |
| Upstream feeder | Sub 17A (ESS Tier A6 Item 3 / NE Tier A3 Item 10) |
| Upstream CB | B40 3P (iC60) |
| Upstream CB way(s) | 31, 33, 35 |
| 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 | Switch |
| Supply cable schedule | |
|---|---|
| Active conductor size | 25 mm² |
| Configuration | 1x4C |
| Conductor arrangement | circular |
| Parallel sets | 1 |
| Conductor material | Copper |
| Insulation / type | UNKNOWN |
| Armour | Unarmoured |
| Installation method | Underground Enclosure |
| Conduit | — |
| Loaded circuits in conduit | — |
| Estimated depth | 0.5 m |
| Earth arrangement | Integral — 6 mm² |
| Approx. length | Not recorded |
Field note (open supply query): Just old. Minor pitting no signs of internal rust or water ingress. Forced extraction may required due to sun exposure
— resolve looped-vs-dedicated feed arrangement on the F-series 50 mm mains before finalising the outgoing design.
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 | 1 | Minor (P4) | Direct-contact / earthing / labelling integrity |
| Structural & enclosure integrity | 1 | Minor (P4) | Enclosure & chassis mechanical integrity |
| Corrosion & protective coating | 1 | Minor (P4) | 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 | 1 | Minor (P4) | Prior fire / thermal event and component condition |
Rationale. Rated AMBER (Condition Index 18.8/100). The board shows minor, logged wear only.
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 | Labelling | Duplicate circuit-breaker designation (E and NE labelled to same CB) | P4 |
| D-02 | Corrosion | Minor pitting to enclosure / structure | P4 |
| D-03 | Thermal / fire | Forced ventilation may be required (solar heat load) | P4 |
| D-04 | Electrical | End-of-life internals; internal renewal recommended at the lighting upgrade | P4 |
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
13 site photographs. Frames outlined in orange are keyed to a priority defect (fire, structural, access or ingress evidence).
