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COATING SURVEY & INSPECTION

We offer on-site coating survey and inspection services as part of a robust QA/QC package on all SPG projects.

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SPECIALIST ROPE ACCESS PROVIDERS

Specialist Painting Group Ltd are a specialist rope access provider carrying out works with difficult access, using only IRATA trained technicians

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PROTECTIVE COATINGS

SPG have extensive experience in the application of tank lining systems across the water and waste water industries.

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ASSET PROTECTION

SPG provide a complete asset protection service to prolong the life span of steel structures. 

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SPECIALIST APPLICATIONS

Product development is an important area of our business. We offer solutions to meet specific industry requirements.

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ASSET PROTECTION

SPG provide a complete asset protection service to prolong the life span of steel structures. 

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PASSIVE FIRE PROTECTION

Specialist Painting Group protective coatings division specialise in the specification and application of both thin film and modified epoxy intumescent coating systems.

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CORROSION PROTECTION

SPG are the market leaders in providing corrosion protection to business critical assets.

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PROTECTIVE COATINGS

Our protective coatings division offers a total asset protection service, providing the inspection, removal and application of highly engineered coating systems.

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RESEARCH & DEVELOPMENT

Specialist Painting Group work closely with manufacturers and clients to develop advanced coatings systems for specific industries. We work with our customers to improve their facilities, manufacturing processes, products and environmental profile.

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Wessex Water

Specialist Painting Group Ltd worked alongside ACWA services to undertake rectification of seven pressure filter vessels installed at the Wessex Water site in Codford. The project involved dry abrasive blast cleaning the internal elements of the filter vessels with a new Macropoxy P300, DWI approved potable water lining being installed.


The retained coating system inside the pressure filters had delaminated.  The coating system had suffered a 100% failure due to issues surrounding the inter coat adhesion characteristics of the material.  The project required the complete removal of the existing coating system through dry abrasive blast cleaning.

Each pressure filter has a plenum floor within the vessel.  Each plenum floor exhibited signs of stress cracking within the coating system.  It is believed the stress cracking was due to over application of the coating system  The stress cracking had resulted in areas of localised corrosion.  Moisture had been able to migrate freely to the steel substrate due the failures within the coating system.
SPG operatives used mechanical tools to remove the existing coating system from the holes across the plenum floor.  Mechanical preparation was also undertaken across the plenum floor prior to dry abrasive blast cleaning. This resulted in less blast media being required to achieve the visual surface preparation standard.

Removal of the retained coating system by mechanical means indicated that no surface preparation had been undertaken prior to the application of the existing coating system. Mill scale was evident across the plenum floor.

This view shows the thickness of the existing coating. Visual assessment measured at 5mm thick. The coating system had also been applied in several layers.  Adhesion between the coating layers was poor, indicating that further preparation of the coating system had not been undertaken prior to the application of the subsequent coating layer.

The specified requirements for this project included BS EN ISO 8501-1SA2.5 This was consistently  achieved. Elcometer grit comparator (serial No. Gi6771) used to monitor visual standard/surface profile and Elcometer surface profile needle gauger  (serial No.E224C-BS) being used to monitor surface profile.

 

All seven pressure filter vessels are in commsioning at the Wessex Water, Codford site. SPG succssfully applied the internal, potable water lining system along with the application of an external protective coating system.

we provide icats training

We offer a range of flexible training packages delivered onsite or at our training facilities in Peterborough, Cambridgeshire. Please contact a member of our training team if you would like further information on training packages tailored to your organisation.
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Company registration number: 7904729 | Vat Registration number: 938 576275
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SPG Head Office
Padholme Road East
Fengate,Peterborough
Cambridgeshire
PE1 5XL

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