ASTM F2550-13 (R2018) PDF Download

ASTM F2550-13 (R2018) is a standard practice that outlines procedures for locating leaks in sewer pipes by measuring the variation of electric current flow through the pipe wall. The testing of sewers for leaks is essential for maintaining and optimizing the performance of sewer collection systems to minimize infiltration and exfiltration. This practice allows for the detection and location of different types of pipe defects that could be potential sources of water leaks, including leaking joints and defective service connections that may not be visible from inside the pipe. The scan data obtained from this practice can be processed and analyzed to provide information on the size and type of pipe defect.

This standard applies to mainline and lateral gravity flow storm sewers, sanitary sewers, and combined sewers that are fabricated from electrically non-conducting materials such as brick, clay, concrete, and plastic pipes. The diameter of the pipes should be between 3 and 60 inches (75 and 1500 mm), and there should be no obstructions that would prevent the probe from passing through the pipe.

It is important to note that this practice involves working in hazardous environments, such as accessing sewers, filling sewers, and operations along roadways. The standard does not provide details on the specific hazards or safety procedures to be followed in these environments. However, there are no safety hazards associated with the use of an electro-scan apparatus that complies with the specifications outlined in this standard. Additionally, this practice involves inserting various items into the sewer, which carries a risk that these items may become lodged in the pipe or further deteriorate a sewer in poor structural condition. However, the standard does not provide methods for assessing the structural risk of a sewer.