- Before
- Starts at 07:00 with the overnight queue and works it all day, sorting by code and joining data by hand. “Eighteen thousand alarms, and I have to find the one that is on fire.”
- Now
- Opens the stream and the 23 incidents it folded into, each with its alarms, its likely cause and the team that acts.
One Tuesday, from 18,214 alarms to 23 actions
Lumina Utilities reads 1.24 million electricity meters and 680,000 water meters over its AMI network. On Tuesday 13 October, Leila Marsh runs the alarm queue in the metering centre. Here is her day, screen by screen, in the working solution.
- 0114:20
The whole day's alarms on one screen, and what they folded into
Leila Marsh · AMI operations analyst, shift leadEvery alarm since midnight is one tick, in a row per family: power fail, power restored, voltage, tamper and cover, temperature, register and firmware, battery, comms, water flow. Under the stream, the fold: 4,860 duplicates, 2,408 blips under 3 seconds, 2,512 planned work and 1,522 information only taken out; 6,912 kept, in 23 incidents. Below that, the incidents sit in seven team lanes, with safety alarms at the top of each lane.
“18,214 alarms → 23 need action”
- 02Replay 06:12
A wall of last gasps folds into one outage
Leila Marsh · AMI operations analystAt 06:12:41 the meters on feeder F12 start sending last gasp; the last arrives at 06:13:19. Leila replays the window, and 1,860 last gasps fold into one incident: Feeder F12 outage, Kestrel Road primary, 1,860 meters. She sees why the incident exists before she opens it.
“1 incident · Feeder F12 outage · 1,860 meters”
- 0306:14:21
An outage ticket proposed before the first customer calls
Stream reader, Noise filter, Event correlator, RouterThe stream reader attached each meter's feeder, spur and transformer. The noise filter checked its 5 rules: no restore inside 3 seconds, and the F07 planned outage is a different feeder, so nothing was taken out. The correlator placed 1,860 meters on one feeder, three spurs and 12 transformers. The router proposed outage ticket OUT-26-10418 for the control room, P1. Graham Achebe confirmed it at 06:16.
Router: “1 min 40 s after the first last gasp; first customer call 06:19”
- 0406:58
448 meters still off — all beyond one fuse
Event correlator · Graham Achebe, distribution control engineerSwitch S3-114 closes at 06:57 to restore spurs S1 and S2, and 1,412 meters come back. The 448 that fail the restore ping all hang beyond fuse FU-3317 on spur F12-S3, on transformers TX-F12-31, -32 and -33. Likely cause: fuse FU-3317 blown, 91 %; the alternative, recloser R-12 locked out, 7 %. Three customers on TX-F12-32 use life-support equipment at home.
Proposed: “Send a crew to fuse FU-3317” — Graham Achebe confirms · “Call the 3 life-support customers” — customer care
- 0514:11
A hot socket reaches field service in two minutes
Router · Carla Mendes, field service dispatcherMeter E-40218837 at 22 Fennick Lane reports socket temperature 78 °C at 13:31, 84 °C at 13:52 and 92 °C at 14:11, against a limit of 75 °C, with voltage imbalance at the socket rising alongside. The electric oven and heat pump share the circuit; load 41 A. Likely cause: a loose jaw in the meter socket overheating under load, 88 %. The router raises it to field service, P1, on a 5-minute clock; Carla confirms the safety visit at 14:13.
EV-301 socket temperature high is a safety code: never taken out, never folded away.
- 06Make safe
A remote disconnect is proposed, never sent
Carla Mendes · field service dispatcherUntil the socket is replaced, a remote disconnect is on the table. The proposal goes to the field service supervisor with the alarm history attached, and the solution has already checked the account: no life-support or medical flag, no weather protection in force today. The supervisor decides.
“Agents never disconnect, reconnect or dispatch.”
- 0702:41
A cover-open flag, with the consumption behind it
Revenue protection scorer · Sunita Varga, revenue protection investigatorAt 118 Harlow Street, meter E-30551287 reports a cover open at 02:14, then six magnetic-field alarms to 02:40. The scorer adds what makes it a lead: use fell 61 % from 2 Sep, the night of an earlier cover-open, while the neighbours at 116 and 120 are flat, and there is no open work order — the last visit was the meter test in April 2024. Score 0.91 against the 0.70 case threshold. Sunita took it at 08:12.
“A tamper score is not proof. This solution never contacts the customer; Sunita Varga decides whether it becomes a case.”
- 08All day
Every alarm taken out names its rule and who approved it
Noise filter · Rule tuner · Amaal Bishara, head of metering11,302 of the day's alarms needed no action, each taken out by one of five rules with its approver and date — including Graham's switching order SO-2610-044 for the F07 planned outage, added at 08:40. The rule tuner proposes R-06 for reverse-energy blips on solar homes: 4,118 alarms in 90 days, none led to an action, and it would not hide 7 Linden Court, which has no registered solar. It goes to Amaal Bishara or nowhere.
Never taken out: EV-206 load-side voltage while disconnected · EV-301 socket temperature high · EV-704 backflow
- 09Hand-offs
Each team on its own clock, each decision with a name
Seven teams, each with the person on shiftControl room, field service, revenue protection, meter shop, water network, AMI network and customer care each get their incidents, their clock and the person on shift. The hand-off log shows who confirmed what: Carla Mendes confirmed the safety visit to 22 Fennick Lane; Ibrahim Sato sent an inspector to Orchard Mews Care Home for a backflow; Carla booked a two-person visit to 9 Pellow Close.
“Today, safety: 3 of 3 — hot socket 2 min · live load side 3 min · backflow 3 min”
- 1030 days
The month, in the numbers the head of metering reports
Amaal Bishara · head of metering577,227 alarms became 687 incidents in 30 days. 62 % of today's alarms were taken out by approved rules. 76 safety alarms reached a person in a median 2 min 40 s against a 5-minute clock, none over it. Outages were confirmed from the meters in a median 1 min 52 s, and 204 field visits were avoided.
“Safety alarms to a person · 2 min 40 s · median, 30 days · clock 5 min · none missed”