Included in our portfolio of industrial cleaning equipment is a range of high specification Vacuum Transfer Equipment.

Specifically designed and custom-built, the equipment is fully certified for use in Zone 2 (Offshore classified) hazardous areas for the uplift and transportation of waste materials (for example, dry powders, sand, sludge and slurries) from tanks and vessels.

Environmentally Sensitive and Safe

This innovative, safe and ergonomic development minimises the need for entry into tanks or vessels to carry out cleaning. Whilst the application of this technology does not always provide the complete solution, it can significantly reduce the man-hours needed in the vessel and therefore reduces the possibility of hazard and risk exposure. Our ‘brain over brawn’ philosophy proves that enhanced safety and productivity can be simultaneously achieved.

The environmental benefits of the vacuum transfer system include:

  • Emission-compliant engines
  • Integral bunds
  • Noise suppression and enhanced atmospheric protection
  • HEPA filtration option to remove contaminants from expelled air during transfer operations

More Information

For more information or an informal discussion about Vacuum Transfer and Pumping Solutions for waste uplift and transportation, call +44 (0)1651 869349 or email


Associated Services

Hydraulic Power Packs for Hydraulic Tools & Systems

NRC supply an extensive fleet of hydraulic power packs suitable for various applications. Our fleet extends to ATEX-certified diesel and electric driven, single and twin circuit skid mounted certified zoned units complementing our existing vacuum systems and pumping solutions providing our clients with a power source both onshore and offshore including hazardous environments.

Our hydraulic power packs come in a range of sizes encompassing a wide range of pressure and flow outputs, with our twin circuit options capable of running two hydraulic systems simultaneously.

Typical applications include the powering of:

  • – Hydraulic tools
  • – Hydraulic systems
  • – Underwater tools
  • – Pumps and rams
  • – Winches and reelers

Hydraulic power packs are routinely used to provide alternative power sources during planned maintenance shutdowns and outages.

Our fleet of Hydraulic Power Packs includes the following:

  • – Atex Zone II Diesel Driven
  • – Single Circuit Diesel Driven
  • – Twin Circuit Diesel Driven
  • – Zone 1 Electrical Driven

Key Features

  • NRC owned, managed and maintained inventory
  • Use in hazardous areas
  • Single circuit and Twin circuit options
  • Diesel, Electric or Hydraulic driven
More Information

For more information or an informal discussion about Hydraulic Power Packs call NRC on +44 (0)1651 869349 or email

Waste Material Transfer Solutions – Hydraulic Pumping

To complement our extensive range of Vacuum Transfer Systems and traditional pneumatic pumping solutions, we also operate a range of Hydraulic and Pneumatic Pumping Solutions from our equipment inventory.

Lobe Pump

Hydraulic Driven ATEX approved Rotary Lobe Pumps which are designed for bulk material transfer. Of a compact design suitable and detachable from transit frame for entry into a standard man way, they are completely reversible and are capable of pumping materials with SG of up to 2 to a height of 50 metres at a flow of up to 10m3 per hour.
The Lobe Pumps can be used in tandem with Vacuum Transfer equipment as well as being a viable alternative when vacuum transfer is not the ideal solution. The addition of the Lobe Pumps provides both Sureclean and by extension, our clients, with enhanced material transfer solutions.

Archimedes Screw Pumps for Sludge Transfer Operations

We have added Hydraulic Driven Archimedes Screw Pumps to our armoury as an addition to the range of Hydraulic pumps designed for bulk material transfer. The compact design is suited for deployment through man ways down to 0.4m diameter. Relatively lightweight with maximum flow rate of 30m3 per hour and a maximum discharge pressure of 10bar. Powered by a Zone II Hydraulic Power Pack the Archimedes Screw Pump give added versatility to the pumping systems required for particularly difficult sludge transfer operations.

The Screw Pump can be used as an alternative to the Lobe Pump for transfer of viscous materials, adding an extra dimension to the suite of pumping capabilities.

Jet Pumps

Our jet pumps rely on a Venturi effect to create a secondary flow, have no moving parts but achieves its purpose by employing specially designed venturi nozzles to convert high pressure water energy to velocity and back again. We have a number of pumps available to suit a range of different applications.

Diaphragm Pumps (Pneumatic)

We have a range of air operated diaphragm pumps ranging in sizes to optimise and provide variable flow rates. Amongst our fleet we have aluminum, stainless steel, cast and polypropylene options which allow us to pump a diverse range of chemicals and materials.

Centrifugal Pumps

A centrifugal pump is a rotodynamic pump that uses a rotating impellar to increase the velocity of a fluid. With both diesel and electrical options available our centrifugal pumps are commonly used to move liquids and slurries through a piping system. Skid mounted and powered by an electric motor the pumps have an optimum flow rate of 180m3/hr.

More Information

For more information or an informal discussion about Pumping Solutions call NRC on +44 (0)1651 869349 or email

Vacuum Systems with HEPA Filtration

Specifically designed and custom built our fleet of Vacuum Systems are fully certified for use in Zone II hazardous areas and provides an innovative, safe and ergonomic solution to the controlled movement of a broad range of waste materials including dry powders, sand, sludge and slurries.

How it Works

Material at source is drawn through flexible anti-static and earth bonded hose assemblies and deposited in a vacuum rated waste skip. Air continues to flow from the skip to the filtration hopper where any airborne particles are retained by the filter elements. Finally, air enters the vacuum pump inlet via the sludge filter and 4-way control valve. Outlet air from the pump carries a high precipitation of water that is mostly removed in the water separator tank. Air exhausting from the separator tank passes through a vortex shedding flow metre before entering the water separator filter where any remaining moisture is removed. Exhaust air from the separator either vents to atmosphere or is filtered.

The environmental benefits of the vacuum transfer system include:

  • – Emission-compliant engines
  • – Integral bunds
  • – Noise suppression and enhanced atmospheric protection
  • – HEPA Filtration option to remove contaminants from expelled air during transfer operations

Easily Deployed

A building block approach provides options for the correct combination of constituent parts for specific work-scopes. For easy deployment and handling, every item is individually designed to be robust and compact.

Material Dependant Productivity

Volume removal figures are very much dependent on the types of transportable material. Typical removal rates of 8–12 m3/hr are routinely achievable.

Vacuum Transfer Unit

The heart of the transfer system, it typically comprises of a liquid ring vacuum pump, diesel engine, sludge filter and high capacity water filter all housed within a self bunded, acoustically lined container. Although electrical and hydraulic options are available. Specifically configured to enable continuous transfer of material. Airflows in excess of 3550m3/hr (2200 cfm) ensure effective conveyance of viscous or heavy media over long distances and high vertical lifts, although electric and hydraulic options are also available.

Continuous Feed Discharge Hopper

The continual feed discharge hopper provides additional waste handling options. A skid unit, certified for hazardous areas, houses a 4000 litre collection tank for direct connection to the vacuum source.

Vacuum Filter

The vacuum filter is an inline component of the filtration pack that can be connected downstream from the vacuum suction head and vacuum waste containers. The filter can be used to reduce the level of dust carry over during the transport of dry materials.

HEPA Filter Unit

The High Efficiency Particulate Arrestance (HEPA) filter pack is used where an extremely high level of cleanliness or purity is required. Particularly effective in negating potential problems which could arise from the presence of hazardous particulates or physiological problems caused by viable airborne organisms.

Key Features

  • Emission-compliant Engines
  • Noise Suppression and Enhanced Atmospheric Protection
  • Earth Bonded
  • Easily Deployed
  • Material Dependant Productivity
  • HEPA Filter Unit
  • Certified for use in Zone II hazardous areas
  • Diesel, Electric and Hydraulic options
  • Safe and ergonomic uplift and transportation
More Information

For more information or an informal discussion about Vacuum Systems with HEPA Filtration call NRC on +44 (0)1651 869349 or email

Vacuum Systems for Waste Transfer – Technical Specification

The design and construction of our Vacuum Transfer Equipment allows for controlled movement of a diverse range of waste liquids, sludges and solid materials in a safe and efficient manner.

The five main components of the system are:

  • – Vacuum Transfer Unit
  • – Vacuum Filter Unit
  • – HEPA Filter Unit
  • – Vacuum Discharge Hopper
  • – Vacuum Skip(s)

Vacuum Transfer Unit

Typically a self-bunded, acoustically lined, containerised, diesel driven vacuum pump with a water separator and a sludge filter. Electric and Hydraulic options are available.

Clearly labelled external connection requirements are mounted on manifolds with the option of either crowsfoot or MacDonald air connections available to accept the supplementary air needed during operation. The vacuum pump and power unit assemblies are fully protected by a range of automatic shutdown devices.

Vacuum Filtration Unit

The filter unit is housed within a specifically designed skid frame that can allow operation at a self-supported elevated level to ensure problem free suction at all times. The vacuum filter unit contains a bank of high temperature and chemical resistant dust filters, which are self cleaned using a pneumatic pulsation system.

HEPA Filtration Unit

The filter unit is of stainless steel construction contained within a certified lifting frame and is fitted with Interchangeable type EU13 (99.99-99.999%) High Efficiency Particulate Arrestance (HEPA) filters. Easily removed inspection panels on the HEPA filtration unit provides ready access to the filter magazine thus ensuring that condition monitoring and cartridge replacement are straightforward operations.

Vacuum Discharge Hopper

Pneumatically controlled and ATEX certified, during operation allows material to be transferred from the hopper to a waiting container (vacuum skip) by an air driven conveyor. Strategically placed air hammers and vibrators prevent bridging of material within the unit. During transit the auger boom folds in two and is securely stored underneath the hopper. The hopper has been designed to allow continuous media removal to take place even during changeover between vacuum skips.

Vacuum Skips

Designed to be stackable to optimise space, the skips have an inlet and outlet port with camlock connectors and a hinged, sealed lid.

More Information

For more information or an informal discussion about Vacuum Transfer Systems call NRC on +44 (0)1651 869349 or email

Vacuum Transfer & Pumping Systems for Waste Materials Case Studies

Vacuum Transfer & Pumping Systems for Waste Materials Industry Experts