Leak Engineering Lecture 10-1 (Revised) | Multiple Leakage Pathways | Dr. Taekyung Kwon | ACTRI

This revised Lecture 10-1 examines bathroom leakage as a multiple-pathway diagnostic problem. It separates source, transport path, manifestation, timing, and residual evidence across embedded supply piping, toilet seals, wall cracks and sealant, and floor-drain connections. Key topics include multi-cause hypothesis testing, OMIRV (Observe, Measure, Identify, Repair, Verify), pressure-decay screening, continuous monitoring, endoscopic inspection, uncertainty, and stopping rules. Instructor: Tae Kyung Kwon, Ph.D., Director, ACTRI Course: https://actri.kr/leak/ English textbook — Paperback: https://www.amazon.com/dp/B0HFJDJW75 English textbook — Kindle: https://www.amazon.com/dp/B0HFJC97LZ Voluntary production support: https://paypal.me/ACTRIKorea This video uses an authorized AI avatar and AI-generated voice of Dr. Tae Kyung Kwon for educational delivery. The lecture is part of ACTRI's multilingual graduate-level Leak Engineering program. Contributing editors and technical reviewers: Young Ho Kwon and Young Sun Kwon.