Protecting a 240-Foot Cased Pipeline with ZERUST® Zerion® Inhibitor Injection
Protecting a 240-Foot Cased Pipeline with ZERUST® Zerion® Inhibitor Injection
ZERUST® Zerion® FVS Corrosion Inhibitor Powder with PGH-300 and PGH-400 Gel Powders
Project Specifics
Installation Dates
October 2022
Location
Quebec, Canada
Environmental Conditions
16 °C average temperature, 60% humidity, sunny with some clouds
Asset Details
Cased pipeline crossing a city street; 240 ft long, with a 24 in casing and an 18 in carrier pipe
Casing Details
Two 2 in vent pipes, one at each end of the casing; end seals retrofitted with new link seals and tape wrap
Inhibitor Delivery System (IDS):
Eductor-mixed liquid inhibitor solution injected into the casing annular space through a vent pipe
ZERUST® Product(s) Used
Zerion® FVS Corrosion Inhibiting Powder
Zerion® PGH-300 Corrosion Inhibiting Gel
Zerion® PGH-400 Corrosion Inhibiting Gel
Project Details
The casing was pressure tested, and some water remained in the annular space. The inhibitor concentration was increased to allow for it, then the solution was mixed and injected until it emerged at the opposite vent.
Outcome & Recommendations
Solution reached the opposite vent, confirming the annular space was filled. The casing also held pressure in a second test before injection.
For More Information
