- Before
- Starts each day with a tray of scanned redlines and redraws 6–10 sheets by hand. “I spend my day redrawing someone else's pen strokes.”
- Now
- Opens each sheet already laid over the map with its edits drafted, accepts them one by one, and signs a version only after the traces pass.
One redline, from the depot scanner to the control room's map
Glen Mabry's crew energised the Harrow Lane 11 kV extension at Fernhill Estate phase 2 on Friday 9 October 2026 — work order WO-24-18837, feeder F-212 from Kestrel Road primary. Sheet 2 of 3 of his construction print was scanned at Westbrook depot at 07:52 on Tuesday. Here is what happens next, screen by screen, in the working solution.
- 01Morning
The tray, ranked by the energisation clock
Tomas Reyes · GIS technician, WestbrookTomas posts network records for Westbrook. His tray holds 1,240 sheets, 46 days on average from energisation to the map; 113 are over 120 days and the oldest, Quayside, waits 214 days for a clearer scan. The agents read each sheet the moment it is scanned: 1,186 are ready for a technician, 31 need a clearer scan and 23 wait for a missing sheet. Harrow Lane, energised 4 days ago, is first.
“Today: 1,240 sheets, 46 days on average from energisation to the map; the oldest, Quayside, is 214 days.”
- 0207:52 · 2 min 40 s
Six agents read the sheet the moment it is scanned
Sheet registrar, Redline reader and Edit drafterThe registrar aligns the 400 dpi scan on 4 grid ticks, the Harrow Lane kerb lines and RMU-118, with an error of 0.6 m. The reader finds 11 marks, 10 read above 0.75. The drafter turns them into 9 proposed edits, every pen line snapped within 2.0 m. The design comparer finds 3 changes from design DP-24-0912 rev C, and the closeout tracker sees sheet 3 of 3 is not scanned yet and reminds Glen at 09:00.
Redline reader: “RMU way reads 3 or 5 (0.61), so you decide”
- 0309:14
The crew's print, laid over the network map
Glen Mabry · crew foreman, underground cableGlen's red ink sits exactly over the street: the designed south-verge route crossed out and a new one drawn along the north verge, “ran N side — 186m”; “TX moved 14m E”; “JT @ 92m”; “LP 2290 NEW”; the overhead span removed and pole P-7711 recovered. A fader moves between paper and map, and each mark carries a number that matches an edit in the list beside the map.
Glen's note on the sheet: “c/o gas main conflict – ran N side”
- 04Every mark
The sheet, read — with how sure it is
Redline readerThe sheet view shows every mark the agents found, what they read and their confidence: the joint at 0.88, the spare ducts at 0.81, the transformer move at 0.97. The reason note and Glen's signature and date, 09/10/26, are read too and matched to WO-24-18837. Below 0.75 a person decides.
“11 marks · 9 edits · 1 reason note · 1 signature”
- 05One click
The wobbly pen line becomes a clean cable
Tomas Reyes · GIS technicianEdit 1 proposes a primary 11 kV cable, 3×1c 300 mm² Al XLPE, 186 m against 172 m designed, from RMU-118 to TX-4471 on the north verge at 0.9 m cover. The route and length differ from the design but sit inside the +10 % rule with a reason on the sheet, so they are recorded. Tomas accepts, and the line snaps onto the verge and joins the two assets it meets.
“Edit 1 accepted — the cable snaps to RMU-118 and TX-4471”
- 06Read 0.61
Way 3 or way 5 — the switching schedule says 3
Connectivity checker · Tomas Reyes decidesGlen circled RMU-118 and wrote “fed way” with a digit that reads as 3 or 5. At 0.61 it is below the line, so it is Tomas's call. Switching schedule SS-F212 shows way 3 spare and planned for TX-4471, while way 5 already feeds the Teasel Close ring; recording way 5 would show two feeds on one way and fail the trace. Tomas picks way 3, then accepts the checked edits in one go.
“Way 3 — matches the switching schedule; edit 9 accepted”
- 0709:15
The new link pillar, approved from the comparison
Adaeze Okafor · design engineer, distributionDesign vs as-built sets the design package, the crew's redline and the work order's materials side by side: 8 items compared, 5 match, 2 field changes recorded inside the rules, and link pillar LP-2290 is not on the design. The design comparer drafts the question; Tomas sends it. The materials agree with the pen — 200 m drum issued, 186 m laid, 14 m returned.
Adaeze Okafor: “Approved. We moved plot 23 off the overhead span, so the pillar replaces the pole service. I'll issue rev D for the record.”
- 08Before posting
The traces pass, then Tomas signs
Connectivity checker · Tomas Reyes signsThe posting package holds the 9 accepted edits as one version, WO-24-18837-AB. The feeder trace runs F-212 from Kestrel Road primary through RMU-118 way 3 and the 186 m cable to TX-4471; the Teasel Close ring is unchanged; no orphans, no duplicates with sheet 1, and 9 of 9 features carry asset id, size, install date, crew and source mark. Tomas signs with a statement.
“I checked each edit against the crew's redline and accept them as built.”
- 09Posted · 09:15
The control room's map matches Harrow Lane
Ravi Menon · control-room operatorVersion WO-24-18837-AB is on the network map and the control room is told: a new 11 kV cable RMU-118 way 3 to TX-4471 (500 kVA) on the north verge, energised 9 October, new link pillar LP-2290, the overhead span P-7710 – P-7711 removed. Switching diagrams for F-212 update at posting. Redline to map: 4 days after energisation.
“Map change · feeder F-212 · Westbrook” — to the control room (Ravi Menon on shift), the outage desk and Westbrook planning
- 10Closeout
The work order moves toward closed
Hannah Lindqvist · construction closeout coordinatorWO-24-18837, $412,600 of construction work in progress, moves from “Redline in · map not posted” to “Map posted · materials to reconcile”, with sheet 3 of 3 still awaited. The closeout tracker shows why the rest wait: 87 built with no redline scanned, 447 read and waiting for a technician, 31 design questions open, 29 contractor packages returned, 17 scans too poor to read.
Closeout tracker: never closes a work order or capitalises cost — Hannah closes it.