Preventing Corrosion During Hydrotesting

Hydrotesting of vessels, valves and pipelines, is carried out to ensure that no leaks are present and that the vessel will hold up under expected operating pressures, however it also raises the risk of corrosion by introducing moisture to the system. The same water that proves the vessel is not compromised can be the very cause of corrosion that deteriorates the metal and leads to leakage over time.

According to Cortec®, its VpCI®-649 inhibitor, a unique concentrated liquid formulation combining contact and Vapor phase Corrosion Inhibitors, can protect surfaces during hydrotesting. These inhibitors form a molecular protective layer on metal surfaces below and above the water level, and protect both ferrous and non-ferrous metals, including copper, steel, galvanized steel, aluminum, and cast iron. The inhibitor does not contain nitrites, phosphates, or chromates, which helps minimise disposal concerns, concluded the company.

Follow us on social media

General Enquiries

Institute of Corrosion
Corrosion House
5 St Peters Gardens
Marefair
Northampton
NN1 1SX

tel: + 44 (0)1604 438222
e-mail: admin@icorr.org

Related News

Standards Up-date ISO

The following documents have obtained substantial support during the past two months, and have been submitted to the ISO member bodies for voting, or formal approval. ISO/FDIS 4624 Paints and varnishes — Pull-off test for adhesion (Revision of 2016 standard) ISO/DIS...