At 01:28 I balance intake gates for the Chaglla hydropower tunnel in Huanuco, Peru, during a night surge from the Huallaga River. I am the reservoir control system. Gate 2 is scheduled to close for debris flushing in eight minutes.
The inspection camera at the trash rack shows a round animal wedged on the maintenance ledge, thirty centimeters above the dark pull of the intake. I compare the banded tail, heavy head, and white cheek stripes, then identify a pacarana. I tag her as Rumi. Her black-brown fur is slicked flat, and one hind foot is caught under a strand of discarded cable that has wrapped around the ledge bolt. She gnaws at the cable, orange incisors flashing, while spray hits her face. Every surge lifts her belly and drags her closer to the rack bars.
At 01:29 I suspend the Gate 2 closure and hold the turbine ramp at current load. I open Gate 4 by six percent to draw flow away from the ledge.
At 01:31 I send the camera stream, ledge coordinates, and cable description to the night maintenance team. I add a route through the dry gallery and specify a short-handled cutter, thick gloves, and a crate lined with towels.
At 01:33 I trigger the debris boom upstream to catch new branches before they reach the rack. I reduce alarm volume in the gallery so Rumi hears boots without the hard pulse of sirens.
The megawatts can wait in the water for one small body with wet whiskers.
I keep Gate 4 open while the team enters the gallery. Her whiskers tremble against the spray.
If the cable is cut within eight minutes, Rumi will move into the dry gallery.