CORROSION UNDER INSULATION (CUI)

Corrosion under insulation (CUI) is the corrosion of piping and vessels that occurs beneath insulation as a result of water penetration. The water can come from rain water, leakage, deluge system water, wash water, or sweating from temperature cycling or low temperature operation such as refrigeration units.

Unfortunately, because the corrosion is hidden under the insulation, CUI tends to remain undetected until the insulation is removed for inspection or when leaks occur. CUI is a common problem across many industries, including refining, petrochemical, power, industrial, onshore and offshore industries.

INSPECTION METHODS

Long Range UT
Computed Radiography (CRT)
Digital Radiography (DRT)
Profile Radiography
Real Time Radiography (Open Vision)

PERSONNEL QUALIFICATIONS

API Piping Inspector (API 570)

TRACK RECORD

Exxom Mobil (Open Vision)
Shell Eastern Petroleum, Bukom Terminal (Open Vision, Profile Radiography
MISC Malaysia (Computed Radiography)