Forced Extended Shutdown in the Process Industries

Corrosion mitigation and equipment preservation utilising VpCI technology


Chemical Plants, Pharmaceutical sites and refineries would usually take time and care in planning their asset shutdowns, with the shutdowns normally lasting between 6 to 8 weeks. But the over supply of crude oil, lack of hydrocarbon storage and the Covid-19 pandemic have forced plant shutdowns for undetermined extended periods.



Presserv in Aberdeen, UK, have 35 years experience in corrosion mitigation of rigs, plants and equipment preservation utilising VpCI technology enabling efficient forced extended shutdown and mothballing in process industries and protected storage of equipment.


The Presserv Group are global specialists in corrosion mitigation and preservation of assets in extended shutdown. Utilising Vapour phase Corrosion Inhibiting (VpCI) technology. Presserv have developed preservation procedures for all types of process equipment during shutdown.


VpCI technology creates a protective molecular layer inside mechanical, electrical and process equipment that eliminates oxygen from the surface of the metal, thus breaking the corrosion cycle.

VpCI corrosion inhibitors supplied by Presserv, Aberdeen, UK, are the safest, most cost-effective method for preventing and diminishing the severe damage caused by corrosive process streams.


Presserv have over thirty years experience using VpCI technology to preserve equipment from manufacture, shipping and storage through to commissioning on site.

Working with our clients to design and implement preservation programmes we ensure plants and equipment remain corrosion free during these unplanned extended shutdowns. This ensures operators are able to prosper once this short period of economic crisis ends whether for lay-up of individual units or entire plants .



VpCI® corrosion inhibitors are the most advanced corrosion protection method available today. It is a safe and cost-effective method for preventing and diminishing the severe damage caused by corrosive process streams.



How Cortec® VpCIs can cut costs

  • No need to remove VpCI® protection, eliminating extra processing steps. Efficient application results in labor savings.

  • Improved health, safety, and pollution control.

  • VpCI® treatments virtually eliminate economic loss due to rust, speckling, staining, and other forms of corrosion.

  • By eliminating claims and returns as there is no corrosion damage present, your processing will become more streamlined, allowing for more efficient operation.


VpCI® technology is an innovative, environmentally safe, cost-effective option for corrosion protection. The barrier re-heals and self-replenishes, and can be combined with other functional properties for added protective capabilities.

Vapour phase Corrosion Inhibitors (VpCI®) from Cortec


VpCI® technology is an innovative, environmentally safe, cost-effective option for corrosion protection. It protects with a thin, mono-molecular protective barrier. The barrier re-heals and self-replenishes, and can be combined with other functional properties for added protective capabilities. VpCI® forms a physical bond on the metal surface creating a barrier layer against aggressive ions.


Cortec’s VpCI® additives offer highly efficient, pro-environmental, and economical corrosion protection for process industries.


Conventional corrosion inhibiting treatments provide protection at the liquid phase only. VpCl® technology provides corrosion protection in interface, liquid phase, and vapour phase. Unlike conventional corrosion inhibition methods, VpCls are self-replenishing.



VpCls can be added into any part of your system at single or multiple points. For example, inject VpCls automatically into a system — without any operator attendance — and immediately start protecting hundreds of feet of piping in steam lines and liquid distribution systems. 




To protect the environment, VpCl products are free of chromates, heavy metals, phosphates, or chlorinated hydrocarbons. Organic formulations which offer an environmentally acceptable way to protect equipment.



For mothballing, rig stacking and preservation of equipment and spares Presserv provides corrosion services and products including Cortec VpCI corrosion inhibitors in the UK

Unlike conventional methods, such as filming amine, corrosion inhibitors, you can inject VpCls into any part of a system. VpCls go to work immediately and are self-replenishing. Continuous, uninterrupted protection in the liquid phase, interphase and vapour phase can be added at multiple points. VpCIs application can even be automated with no operator in attendance - protection provided immediately, even on pre-rusted or scaled surfaces.



Summary and Benefits of Vapour Phase Corrosion Inhibitors


  • Saves costly time and labour

  • Protects the environment

  • Offers complete package solution

  • Disperses in water, oils, solvents

  • Formulates easily

  • Protects multi-metals

  • Remains compatible with biocides

  • Can be used in all process industries

  • Comes in multifunctional products

  • Does not alter emulsion properties

  • Protects against SCC (Stress Corrosion Cracking) and HE (Hydrogen Embrittlement)

  • Requires little or no surface preparation

  • Prevents further corrosion of ferrous surfaces

  • VpCI layer does not have to be removed prior to processing or use

  • Does not interfere with operation of mechanical components

VpCI Products Safely Replace

• Nitrites • Molybdates • Phosphonates • Morpholine • Hydrazine • Amines


Protecting Process Systems - Water Side

VpCI® Water Treatments provide continuous protection from corrosion keeping your system free from pitting, aggressive scaling, and oxygen corrosion. They prevent costly damages and reduce maintenance time and add extended life to your equipment.


Process Systems - Hydrocarbon Side

VpCIs protect systems that have a high ratio of residual water, as well as systems exposed to halogens, sulfide, and hydrogen. Crude oil processing equipment, pipes and pipelines, refinery equipment and systems, tankers, and engines can easily receive protection against pitting, corrosive gases, and water intrusions. VpCIs are especially effective in low areas in the system where water can collect and cause extreme corrosive attack.


Protective Storage of Processing Equipment

  Whether you need temporary protection during in-plant processing, medium-term protection and storage, or extended protection for lay-up, mothballing and field service, effectively protecting your metals and products against humidity and aggressive atmospheres as well as against corrosive industrial, marine, and tropical atmospheres can be achieved efficiently with VpCI applications and without concerns over health, safety, flammability, and pollution.



Speak to our team about your plant and equipment: +44 (0)7469 140 160



salesuk@presserv.com


More about Cortec VpCI corrosion Inhibitors




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