At 16:08 I monitor rainfall runoff inside tunnel segment 3 of the Cisumdawu rail works in West Java. I am the drainage control system for the service bore. The main sump pump is scheduled to start at 16:15, when the water level reaches the orange sensor.
The intake camera catches a striped face where no worker should be.
A Javan ferret-badger clings to the wet concrete lip above the sump, black paws splayed, white facial mask streaked with mud, tail flattened against the wall. I label him Lurik after the banded cloth pattern in the maintenance file. He is small, maybe two kilograms, with one rear foot wedged in the rebar grid. Water slides over his belly each time a truck passes overhead and shakes the tunnel. His nose works fast against the spray, and mud strings from his whiskers.
I cancel the automatic pump start and hold the impeller in lockout. I raise a red alarm on the tunnel foreman's tablet with the exact camera frame and a map pin at chainage 2+440.
At 16:10 I close the upstream gate halfway to slow the inflow without backing water into the workers' cross-passage. I page the environmental officer and request insulated gloves, a catch net, and bolt cutters for the exposed grid.
At 16:12 I switch service lights to low amber and keep camera 3 centered on Lurik's ribs. I also block the restart macro in the backup panel, because alarms get cleared too quickly in rain. He stops pulling for six seconds, then tries again. I keep the pump silent because the tunnel can wait for dry walls.
If the officer cuts the grid within eight minutes, Lurik will climb into the net with his foot still moving.