Common Causes of Corrosion Under Insulation (CUI)

Res POWERTHERM CONTRACT SERVICES LTD www.powertherm.co.uk Common Causes of Corrosion Under Insulation (CUI) CUI is a very acute form of corrosion whose main cause is through water intrusion. Prevention of water penetrating the insulation system is of utmost importance. No moisture or water = no corrosion HOW CAN WATER PENETRATE? Water can penetrate insulation systems in three different ways: 1 Gaps or openings in the cladding 个个 个 2 Water vapour - due to air movement 3 Water in gaseous form - water vapour diffusion INSULATION DESIGN CONSIDERATIONS Should allow for the installation of "liquid proof" insulation systems Specify anti-corrosion systems and applications THE EFFECT OF EXPANSION MOVEMENT EXTERNAL CLADDING JOINTS (TIGHT) BEFORE HEATING INSULATION PIPE EXTERNAL CLADDING JOINTS (OPEN) НЕАТED ΤΟ ΤΕMP. INSULATION (SHRINKS) PIPE (EXPANDS) MOISTURE IN INSULATION SYSTEMS Moisture within your insulation system reduces it's efficiency. % of water in the insulation leads to 1% approx 4% increase of thermal conductivity 5% % of water in the insulation system will make it non functional Powertherm Contract Services is a multidisciplinary industrial service provider with 30 years of experience, offering a range of industry-renowned services across the UK. They have launched a revolutionary, patented (GB 2539595 A) new product called the Space-Ring System, which safeguards against CUI, for more details please visit www.powertherm.co.uk/srs RES POWERTHERM CONTRACT SERVICES LTD SPACE-RING SYSTEM EXTERNAL CLADDING SPACE-RING P POWERTHERM PIPE CONTRACT SERVICES LTD SPACE-RING SYSTEM INSULATION AIR SPACE DRAINAGE HOLES es POWERTHERM nga. nga. nqa. CONTRACT SERVICES LTD ISO 9001 ISO 14001 ISO 45001 HEALTH & SAFETY ENVIRONMENTAL QUALITY MANAGEMENT MANAGEMENT MANAGEMENT +44 (0) 114 288 9119 [email protected] www.powertherm.co.uk Francis House, Orgreave Drive, Handsworth, Sheffield, S13 9NR