Problem
The client wanted corrosion protection for a buried pipe casing.

Solution Specifics
The casing was filled from the Northeast end with 5% Zerion FVS and 3.5% Zerion PGH-300 and Zerion PGH-400. A total of five (5) pails of FVS were premixed in a 1000-gal tote and circulated for desirable saturation and to ensure solution homogeneity using a trash pump. A total of 355 gallons of potable water was mixed with FVS inhibitor and injected through the casing at a flow rate of 50.40 CFS. While depositing three (3) pails of PGH-300 Gel and two (2) pails of PGH-400 Gel within the hopper and through the eductor system. Roughly, 2-gal of water was discharged from the southwest of the vent pipe.

Results
For the duration of the corrosion inhibitor FVS/Gel injection, no obvious leakage was observed around the end seals. VCI/Gel injection was completed per the provided lengths of the casing at 100% fill with no issues and within a timely manner in collaboration with the contractors.