What type of inspection is fundamental in identifying leak sources?

Visual inspection is fundamental in identifying leak sources because it allows the inspector to observe the physical conditions of pipes, fittings, and surrounding areas. During a visual inspection, signs of leaks such as water stains, corrosion, and deformations can be directly seen, which helps in tracing back to the source of the issue. This method is often the first step in leak detection, as it provides real-time observations and enables the inspector to assess the overall condition of plumbing systems.

Visual inspections can also help locate other potential problems that may not yet have resulted in leaks. For instance, abnormalities in the structure or signs of wear can signal future failure points, allowing for proactive maintenance. While other methods like thermal imaging, chemical analysis, or structural integrity inspections can also play roles in leak detection, they typically supplement or confirm findings that originate from a thorough visual inspection.