"The book says 1.6." Aris tapped the page. "The book is based on fifty years of industry data. The vendor is trying to sell you a new $200,000 distributor. Who do you trust?"
"Page 687," he murmured. "The V-notch weir distributor. It’s rated for a turndown to 1.6 ratio. We're at 1.8. We're inside the operating window."
The fix was not a new distributor. It was a small bypass line and a recirculation pump to increase the head. Total cost: $12,000 and two days of welding.
Outside, the quench tower hummed a steady, quiet song. And the brown leaf skittered past the flare stack, toward a new day.
She read his notes. Then she smiled.
"Page 691," she said.
The book was a brick. Its navy blue cover was scuffed, its spine cracked in three places, and its pages were a mosaic of coffee stains, highlighter ink, and frantic pencil annotations. To Aris, it was not a textbook. It was a compass.
He wrote the solution on a scrap of process flow diagram. He underlined the page number in the book. Then, for the first time in weeks, he leaned back and closed his eyes.