RISK ANALYSIS OF PRESTRESSED CONCRETE CYLINDER PIPE WITH BROKEN WIRES

The paper reviews the significant impact that the development of Remote Field Eddy Current/Transformer Coupling (RFEC/TC) technology for inspection of Prestressed Concrete Cylinder Pipe (PCCP) has made on the condition assessment of the PCCP lines. The paper presents a summary of results of the research effort that had the following scope: hydrostatic pressure testing of PCCP with broken wires; field investigation of the condition of PCCP with broken wires away from broken wire zones; finite element analyses of the cracking process and of the ultimate failure of PCCP with cracked core; and development of simplified approach for risk analysis.