04 January 2018

Waste Water Monitor for Freight and Passenger Ships Wins Approval  

Classification Society Passes Maritime Exhaust Gas Cleaning System Checker

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Shipping News Feature UK – WORLDWIDE – Chelsea Technologies, actually based in West Molesey, which produces a range of sensors for the maritime industry, has achieved certification from ClassNK the Japanese based classification society, for its Sea Sentry wash water monitoring system, which oversees a 'scrubber' working to clean exhaust gases. Assuming agreement with vessel's flag state, scrubbers are a permissible way to control sulphur oxide emissions for both freight and passenger vessels burning fuel oil.

Accurate monitoring for compliance with environmental regulations is a vital prerogative for the international shipping industry, particularly ahead of the 2020 global sulphur cap being introduced by the International Maritime Organization (IMO). The installation of exhaust gas cleaning systems (scrubbers) is a compliance option that affords owners and operators the opportunity to continue to burn Heavy Fuel Oil (HFO) at a lower cost; with estimates tagging the post-2020 fuel spread between HFO and distillates as varying between $150 and $400 per tonne, depending upon the port, according to Platts and Bloomberg data.

Whilst the makers insist the payback period is relatively short, scrubbers are a costly capital expenditure, ranging from $2 million to $6 million per unit, so it is crucial that compliance with environmental regulations can be proven. All varieties of wet scrubber systems use wash water which must be monitored at all times to avoid discharges that may exceed regulations and damage the environment.

Sea Sentry provides a fully autonomous wash water monitoring system, which monitors both the water inlet and outlet of wet exhaust gas scrubber systems. It has the ability to accurately measure the polycyclic aromatic hydrocarbon, absorbance, turbidity (to ISO 7027: 1999), temperature and pH of scrubber wash water. It can monitor open-loop, closed-loop and hybrid scrubber systems, which the makers say sets the gold standard for accurate wash water monitoring. On achieving the classification Dr Brian Phillips, Managing Director of Chelsea Technologies Group, commented:

“Ship owners and operators have crucial decisions to take ahead of the 2020 sulphur cap. For those taking the decision to invest in scrubbers, it is critical that vessel operators work with knowledgeable experts to receive the training they need to operate new systems, along with the understanding to be able to interpret and apply the data, and prove compliance. Acting now will ensure companies stay ahead of regulations and will continue to trade across the globe.

“Achieving ClassNK certification is a significant step in our commitment to obtaining type approval for all of our monitoring systems, offering our customers the assurance that our systems meet the utmost standards in quality, accuracy, and operational efficiency.”

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