US Coast Guard type-approval granted to Miura HK-(E)R ballast water treatment system

The Coast Guard Marine Safety Centre has issued its 31^st US Coast Guard Ballast Water Management System Type Approval Certificate to Miura Co., Ltd., after a detailed review of the manufacturer’s type approval application determined the system met the requirements of 46 CFR 162.060.

The treatment principle for the Miura HK-(E)R consists of filtration and UV treatment during uptake and UV treatment during discharge. This approval covers models with maximum intake treatment rated capacities between 200 m³/hour and 900 m³/hour.

The USCG type-approval lists the operational limitations as:

• Salinity: N/A
• Water Temperature: <50^oC
• Hold Time: Marine Water (>20 PSU): >24 hours
• Brackish and Fresh Water (<20 PSU): >72 hours
• UV-dose: >225 mJ / cm²

The USCG also stipulates that the Miura HK-(E)R BWMS is not approved for fitment on US-flag vessels and is not approved for installation in hazardous locations on a US-flag vessel, but may be installed in hazardous location on non-US flag vessels.

There are now only nine BWMS left on the USCG list of systems under review. This includes four BWMS that have been previously type-approved and have been re-submitted due to changes in technical specification.