LeakLocateLogic is a handy pipeline that puts core field math in one place, with plain words and clear results. It solves friction factor fast (Colebrook-White or Swamee–Jain) and sizes pipe wall by Barlow with design factors and allowances built in. It checks MAOP and hoop stress against grade limits, including temperature derate. It also gives a burst pressure estimate using ultimate stress, with clear warnings about limits. For ops, it models steady heat loss to show temperature drop along the line and turns target odorant mg/m³ into a simple dosing pump setpoint. Leak hunts get easier with a dual-sensor helper that uses time and ppm to point you to the likely spot. You can plan purge or inerting time from line volume and flow, and get a pig run ETA by segment speeds and rules. Finally, it totals CP current from coating breakdown so you can set the right mA.