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Injection Line Reinforcement and Repair

Pipeline Integrity & Corrosion Repair from Neptune Research Inc (NRI)

Problem

A 14” OD high pressure water injection line has external corrosion on girth welds due to corrosion under shrink sleeves.

Conditions

Removal of the shrink sleeves revealed external corrosion ranging from 20% to 50% wall loss.

Solution

After sufficient surface preparation, Syntho-Steel epoxy mastic was applied to the corroded area. The pipe was then protected with the calculated number of layers of
Syntho-Glass®XT. This solution brings the HPI line pressure capability back to that of a pristine pipe.

Result

Thirty joints were ultimately repaired, then subsequently pressure tested with no failure. Normal operations resumed at 2,300 psi (158 bar).

Category :

Pipeline

Date :

June 18, 2018