- Sees
- The request, its sources and the agents’ sort
- Signs
- Confirms the bucket or picks another, with a reason
Turnaround emergent work at 2:40 a.m.: one exchanger, nine minutes
Nineteen days into a 38-day turnaround, 287 requests have reached the desk. At 2:40 a.m. the eddy current test on the hydrocracker’s reactor effluent exchanger comes back worse than the pack allowed, and the crew on the bundle pad stops.
demoThe plant, its night crew and every number shown here are sample data.
- 012:41 a.m.
31 more tubes below the limit, and the pack allowed 16
Emergent work coordinatorThe voice note and photo are already a written request on the shift desk. The agents matched the tag, opened its job pack and past findings, and sorted it as discovery: 15 tubes past the allowance. Beside it sit the hours to the critical path, the contingency left, and the one person who must decide, with his clock running.
- 022:41 a.m.
Pitting at the outlet ends again, and 31 more tubes below 0.060 in
Emergent work coordinatorBefore confirming the sort, the coordinator opens the eddy current tube map behind the finding: 31 more tubes below 0.060 in, the thinnest at 0.059 in, against 27 already plugged through the last turnaround. Opening is recorded, because each checker downstream has to see what they confirm. The same pitting at the outlet ends was reported two turnarounds back.
- 032:41 a.m.
The pack allows 16 plugs; one tube more and it becomes a request
Emergent work coordinatorThe job pack page settles the bucket. The plan counted this job right, so this is no growth; only the test could show which tubes failed. Fifteen tubes past the allowance are discovery, and the money comes from that line. The coordinator confirms the sort, and the request moves to the inspector, the engineer, the cost controller and the scheduler.
- 042:45 a.m.
14 hours of work against 22 hours of float leaves 8
Turnaround schedulerEach checker opened their source before confirming: the inspector the tube map, the engineer the plugging limit, the cost controller the job pack and the tensioner kit order. Now the scheduler has the schedule update open. Fourteen hours on this path leaves eight hours of float, off the critical path. Galled channel cover studs cost 11 hours two turnarounds back, so the studs go on watch.
- 052:47 a.m.
Approve stays grey until the tube map, the pack and the float are open
Night superintendentThe superintendent signs up to $100,000 a request, and this one asks $61,000. Three chips must turn on before the button works: the tube map, the job pack page and the schedule update. He opens each one, then picks the reason, integrity, must be fixed before restart. Agents never approve, and the button reads the amount he is about to move.
- 062:49 a.m.
Approved at 2:49 a.m., nine minutes after the report
Night superintendentApproving raises the work order and books the crew. On the dials, float drops to 8 hours and contingency left falls from $7.50M to $7.44M. Because the retube cannot happen in this window, it goes on the deferral ledger. The scheduler gets the 14 hours to add to the schedule, and the desk moves on to the next request.
- 072:50 a.m.
The hydrocracker’s path drops from 22 hours of float to 8
Turnaround schedulerThe critical path view ranks each unit’s tightest path by float. On this exchanger’s path, the plugging step now carries the added hours, and the watch on the channel cover studs sits under it: with 8 hours left, a repeat of the galled studs at stud make-up would reach the critical path. The fix goes to crew and materials.
- 082:50 a.m.
The retube goes on the ledger with a condition and an owner
Night superintendentThe ledger holds each line deferred during this event. The exchanger’s line reads: retube or replace the bundle at the next turnaround, because alloy tubes are long-lead and 58 of 1,180 tubes plugged sits inside the limit. Its condition is a tube-side test at every outage. The turnaround manager’s countersignature waits for the morning review.
- 09Morning
Each event plugged more tubes, so the agents propose a retube next time
Cost controllerEvery request was sorted when it came in, so money used by equipment class, split by bucket, is ready for the next estimate. The agents propose allowance changes: for this exchanger, a retube in the scope instead of more plugs, and a spare stud and nut set. The cost controller accepts or declines, and the turnaround manager countersigns.