Mitigating Risk Through Condition Assessment The L-301 PCCP1 (C2026-00051)
Monday, March 16, 2026
10:30 AM - 11:00 AM Central
Location: 362 DE
Earn .5 PDH
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The Trinity River Authority (TRA) operates a major water and wastewater system serving over 1.5 million people across the Dallas-Fort Worth area. To ensure the reliability of its large-diameter transmission mains, TRA follows a proactive, data-driven approach—combining advanced inspection tools with scheduled maintenance to reduce service disruptions. In August 2024, TRA partnered with Pipeline Inspection and Condition Analysis (PICA) to inspect a two-mile section of the 48-inch L-301 Prestressed Concrete Cylinder Pipe (PCCP) transmission main in Bedford, Texas. This line is part of the Tarrant County Water Supply Project. PICA deployed its 48” Advanced Nondestructive Testing (NDT) tool using a dual-tethered method. The tool utilizes Remote Field Testing (RFT), an electromagnetic technology that detects wall thickness changes, broken wires, and other internal defects in the steel cylinder. A total of 652 pipe segments were inspected, with 607 analyzed in detail. The results showed 186 steel cylinder defects, with most exhibiting low to moderate wall loss. Only three segments showed signs of wire breaks, each with fewer than five. Field challenges included continuous dewatering and limited access near the treatment plant. Despite these, the data collected will guide TRA’s long-term pipeline asset management strategy.
