High Pressure Offshore Waterjetting Pumps

Our MultiJet high pressure offshore waterjetting machines undertake high and ultra high pressure water jetting applications. They operate in both safe and hazardous area environments such as ATEX Zone 1, Zone 2, and NORSOK. They are generally for operation on drill rigs, production platforms or FPSOs. These high pressure offshore pumps undertake superstructure and fabric maintenance projects including heli-decks, accommodation areas, walkways, and pipes and supports. Our offshore water blasting equipment is often used in conjunction with accessories for surface preparation and cleaning, and abrasive cold cutting of tanks, pipes and decks and other composite materials.

See an ATEX Zone 2 Offshore pump unit on test.

Why High Pressure Offshore Waterjetting

High pressure waterjetting is a dust-free technique which allows other adjacent activities such as painting and lagging to continue. It minimises the waste stream created, reduces clean-up time, and is not weather dependent. When used in surface preparation operations it is proficient at exposing the original profile without further erosion and guarantees the highest level of cleanliness of all surface preparation methods. Operators use ancillary vacuum equipment in conjunction with the offshore high pressure pumps to contain all washings and contaminants and, once filtered, washings can be reused and contaminants disposed of as appropriate.

Container and Crash Frame Units

Our offshore waterjetting units are generally containerised. Where weight is a concern a crash frame may be selected or a unit from our lightweight range. Both crash frames and containers are DNV certified, supplied complete with fork lift entry points and a certified 5-leg sling set, and are painted in the customer’s choice of colour using a marine coating system.

Watch this ATEX Zone 2 Offshore pump video to find out more.

Container-mounted pump units have the advantage of a level of intrinsic noise attenuation along with additional noise attenuation options, as well as offering transport protection and protection from the weather in harsh environments. Design features include lockable double access doors, externally mounted lockable control panel, external fuel fill, and external stainless steel bulkhead panels for access to controls and services connections, inlet water supply, air supply, and discharge hose connections. Options include internal hazardous area rated lighting, bench and vice for routine maintenance and servicing, maintenance hoist, gas and fire detection, and fire suppression.

High Pressure Offshore Pumps Certification

We manufacture equipment and component parts to comply with client specifications and the relevant hazardous area legislation. We compile a comprehensive documentation package in accordance with client and hazardous area requirements. All ATEX Category 2 electric motor driven units (Zone 1 applications) are SIRA registered and are pre-inspected by Offshore Inspection Services at Calder’s manufacturing facility in Worcester before release.

Other Offshore Fabric Maintenance Products

In addition to our MultiJet offshore high pressure pump units, we also manufacture hazardous area vacuum units and hot water, high pressure packages, providing customers with complete, cost-effective, compliant and environmentally sound solutions to offshore fabric maintenance tasks.

To discuss your offshore jetting equipment requirements, give us a call: +44 1905 751790 or email sales@calder.co.uk

Offshore Waterjetting Safety Awareness Training

We are members of the Water Jetting Association (WJA). The WJA is a trade association representing contractors, manufacturers, hirers and other organisations in all aspects of high-pressure water jetting and has developed waterjetting codes of practice. Our Life Cycle Services team provide Water Jetting Association-approved safety awareness training.

  • Gas & fire detection.
  • Fire suppression systems.
  • Noise Attenuation – Various options to reduce noise levels to below 85 dBA.
  • Ambient Temperature Operation – Extended radiator for operation in high ambient temperature environments up to 50⁰C.
  • Lifting Points – Located above pump head and flame trap to enable fitting of chain hoist to assist with equipment removal/maintenance.
  • Bypass Regulator Control Valve – Minimise water use. Local or remote hydraulically operated pressure control.
  • Internal Hazardous Area Lighting.
  • Maintenance Bench and Vice.
  • Gun Storage Racks.
  • Hose Storage Racks.
  • Dual Control (for HP and UHP convertible units).
  • ATEX Zone 1
  • ATEX Zone 2
  • NORSOK
  • Rig Safe
  • IECeX
  • CSA
  • CRN
  • Gost RTN

Cleaning of:

  • Pipes.
  • Tanks.
  • Walkways.
  • Decks.

  • Surface preparation both above and below water.
  • Abrasive cutting for abandonment and decommissioning.