Evac BWMS moves closer to USCG approval

The Evac Evolution ballast water management system The Evac Evolution ballast water management system
Industry Database

The Evac Evolution ballast water management system (BWMS), designed and manufactured by Cathelco, has moved one step closer to US Coast Guard Type Approval.

When Finnish-based Evac acquired Cathelco earlier this year, the latter was already well on the way to USCG Type Approval having completed all the stages of the land and sea-based testing programmes.

“We are now within reach of gaining USCG Type Approval and this will give potential customers additional confidence in looking at the advantages of our system”, said Mika Karjalainen, CTO, Evac Group.

Intensive testing

Based on a combination of filtration and UV technology, the Evac Evolution system has been tested in ‘real world’ conditions and technically enhanced over a ten-year period.

The system is available with capacities from 34 m3/h to 1,500 m3/h in a single unit and can be provided skid mounted or in modular form, simplifying retrofit installations in confined areas.

A unique feature of the system is a feedback ‘loop’ which ensures thorough irradiation of organisms, whilst ensuring that power is used as economically possible.

The Cathelco UV transmission sensor system helps ensure precise UV dosage by adjusting the UV level to different water qualities. It is achieved by taking a sample of sea water before it reaches the UV chambers and measuring the amount of UV light actually passing through it.

This works in conjunction with UV intensity meters which are mounted on the chamber and measure the intensity of light which is received.

The system has already been supplied for vessels ranging from luxury cruise ships and superyachts to container ships, ro-ro vessels, bunkering tankers, offshore supply vessels and Arctic fishing craft.

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