2/4/2010 ����������� �������������������� ���������������� 1. Understanding corrosion problems and the solutions that Enviropeel offers 2. Familiarization with equipment and material 3. Enviropeel application techniques 4. Basic maintenance of Enviropeel equipment. ����� ����� � Fundamentals of corrosion � Recap and test on Day 2 � Trainees start up Machine. � Advantages of Enviropeel � Practical training � Machine introduction � Safety & use of PPE � Empty down tank � Substrate preparation � Remove pump & clean out tank ����� ����� � Recap and test on Day 1 � Recap and test on Day 3 � Pump stripping, application head � Machine start up stripping and needle valve � Fault/Status codes adjustment demo � Application demonstration � Trainees to strip pump, head and � Practical Training adjust needle valve � Back Flush � Practical training � Machine shutdown � Final Practical Assessment � Course Debrief 1
2/4/2010 ����� ����!"���#����� � Corrosion is the primary means by which metals deteriorate. � Corrosion is a natural process, returning metals to their basic forms � Most metals corrode on contact with water or moisture in the air � Corrosion specifically refers to any process involving the deterioration or degradation of metal components, of which the best known case (and the one in which we are most interested here) is the rusting of steel. � Corrosion processes are usually electrochemical, having the essential features of a battery. � Metal atoms exposed to an environment containing water molecules give up electrons, becoming positively charged ions, provided an electrical circuit can be completed. � This effect can be concentrated locally to form a pit or crack - or it can extend across a wide area to produce general wastage. These pictures illustrate the similarity in colour between pale green malachite, a common copper ore mineral, and the corrosion products on a brass plate (70% copper) exposed to a humid environment. � Localised corrosion that leads to pitting may provide sites for fatigue initiation and, additionally, corrosive agents like seawater may lead to greatly enhanced growth of the fatigue crack. � Crevice corrosion occurs when water can penetrate but is unable to flow, becoming stagnant � Galvanic corrosion can occur when two different metals are placed in contact with each other. The more active, or anodic, metal corrodes rapidly while the more noble, or cathodic, metal is not damaged. In bolted systems, this sacrificial effect can affect bolts, particularly carbon steel bolts in stainless flanges. In this case the bolts, which are more active than the stainless components, suffer from severe galvanic effects, often deteriorating severely within months. Electrolyte Left: the effect of galvanic corrosion is very clear on these carbon steel bolts, attached to a stainless steel joint. Right: a diagram showing the basic mechanisms of a corrosion cell $%���� ��%������������� & ��#' AN ACTIVE ANTI-CORROSION BARRIER The Enviropeel system uses a corrosion-inhibiting sprayable thermoplastic (CIST) to provide an active anti-corrosion barrier for the protection of steel substrates. The system uses a specially-designed heating and pumping unit to spray the Enviropeel E170 on to objects of any size or shape. A STATE-OF-THE-ART APPLICATION UNIT The standard Enviropeel unit is a steel trolley equipped with a computer- controlled heating and pumping unit, a ten-metre hose and an application gun. Different equipment sizes and specifications are available. A CORROSION-INHIBITING SPRAYABLE THERMOPLASTIC Enviropeel E170 is a solid at normal temperatures and is supplied as chips for easy handling. The chips are melted in the heating tank of the application unit and sprayed as a liquid on to the substrate. Cooling almost instantly, the material forms a tight, perfectly-fitting cocoon around the substrate. Corrosion inhibitors are continuously released from the material to provide active corrosion inhibition for the lifetime of the system. E170 is strippable, non-toxic, recyclable and reusable, making it easy to use and environmentally friendly. 2
2/4/2010 $%���� ��%������������� & ��#' A SHORT VIDEO DEMONSTRATION OF ENVIROPEEL APPLICATION & REMOVAL Loading chips into the tank Applying material to the substrate Trimming and cleaning after application Returning waste material to the tank for re-use Stripping the application from the substrate All clean removed material can be immediately re-used in the application unit ��()��%�������� ��� � � Environmentally friendly � Spray application � Built-in inhibitor � Strippable � Suitable for any substrate � High dielectric strength � Minimal preparation � Flexible & tough � Moves with substrate � Fits any shape or size � Standard colour Grey � Available in any colour � Re-usable – reduces waste � Recyclable � Non-toxic � Safe use & disposal $%��������&�"�" ����' � Bolts & bolted systems � Bearing housings � Flanges & Valves � Gearboxes � Junction boxes � Dissimilar metal joints � Replaces petrolatum tape � Protection of critical spares � Mothballing � Structural 3
2/4/2010 #���������� ���� � ASTM G62-87 Pinhole/holiday detection � Long term storage of Enviropeel 170 at 80° C. � ASTM G62-87 Pinhole/Holiday detection apparatus. � Determination of Dielectric strength � ASTM B117-97 Hot Salt Fog Test � ASTM G53-96 Accelerated weathering � Ignition and Deluge Test - DNV-OS-D301 Jan 2001 � Cryogenic test in Liquid Nitrogen � Long-term testing with DNV #���������� ���� Acids : satisfactory with 20% sulphuric acid, 20% hydrochloric, 20% phosphoric but more affected by 20% nitric and 20% acetic. Water : satisfactory (not for potable water contact) Alkalis : satisfactory with 20% sodium hydroxide and 20% sodium hypochlorite (bleach) some reaction with ammonium hydroxide. Solvents : generally unsuitable. Resistant to diesel but not petrol. Potential permutations involved with chemical testing including type, concentration, temperature, duration, and type of contact. %����%�*� �!��& Enviropeel equipment is designed to operate reliably and safely but, as with all industrial equipment and processes, precautions must be observed to ensure the safety of those operating the equipment and for others in the work area. The most obvious risk factor associated with Enviropeel relates to the fact that the material is heated, so the material and parts of the equipment can be too hot to touch. Care must be taken not to direct the flow of material towards anyone, and users must be aware of the risks of operating electrically-powered equipment as well as more general risks associated with trailing cables and hoses. � High temperature from material and equipment � Compressed air � Electricity – High / Low Voltage � Fumes – Non-toxic but could cause irritation � Strains, bumps, slips trips and falls � A duty of care towards: yourself, co-workers, the general public and the environment � Maintain equipment � Use common sense 4
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