Our Products At Work in the Field

FormaShield® System: External Corrosion

Texas City, TX
January 25, 2018

Project Overview
An externally corroding 8” OD horizontal above-ground hydrogen pipeline in Texas City, TX, required reinforcement using the FormaShield® system. The corrosion dimensions were 19” long x 9” wide x 0.151” deep at the 6:00 position. The repair was a Class 4 location with a nominal wall thickness of 0.250” and a Grade X-42 (42,000 SMYS) pipe. The ambient temperature was 63° F and the pipe’s temperature was 60° F.

Repair Solution
The team designed the repair in accordance with ASME PCC-2 standards, utilizing the FormaShield wrap system with four layers for 18 linear inches to restore the structural integrity of the pipeline back to pristine conditions.

The reinforcement repair was completed in 55 minutes by two Milliken Infrastructure Solutions supervisors, company and contractor personnel. The repair area was grit-blasted and wiped clean with acetone, and EP420 filler material was applied for load transfer at corrosion areas. A PPR epoxy coating was used on the entire repair zone, and no ILI smart pig markers were installed for this job. The 4” wide FormaShield system was applied using the spiral method for 18 linear inches using four layers. Next, the team applied constrictor wrap, perforated it and allowed it to cure. The contractor removed the constrictor wrap after curing was complete and applied a topcoat with a customer coating. 

FormaShield_External Corrosion_Texas City_EP420 FillerFormaShield_External Corrosion_Texas City_Constrictor WrapFormaShield_External Corrosion_Texas City_After