News

ETI Completes Non-Destructive Examination Services at the Patapsco WWTP

July 30, 2015

Situated on the Patapsco River, the Patapsco Wastewater Treatment Plant (WWTP) is a secondary treatment facility that removes pollutants from incoming wastewater and returns it to the Patapsco River and the Chesapeake Bay.  Eastern Testing & Inspection's (ETI) technicians recently completed non-destructive examination (NDE) services for the facility.  The services performed include:

  • Condition assessments of sludge blending tanks (1&2)
  • Impact echo tests on the exterior tank walls
  • Windsor probe tests on the top and bottom slabs of both tanks as well as the interior tank walls
  • Ground penetrating radar (GPR) scans on the top and bottom slabs and on the basement concrete columns to locate reinforcing in both tanks
  • Drilled core specimens to determine compressive strengths of the top and bottom slabs at both tanks
  • Half cell potential and galvanostatic pulse measurement on the reinforcing in the tank walls
  • Petrographic examination on core specimens from both tanks