Retrofit Solutions for Exhaust Gas and Water Cleaning

MarineLink.com
Monday, November 04, 2013

Upcoming environmental regulations will affect existing vessels, and as a consequence there is a growing demand for exhaust gas cleaning and ballast water treatment systems.

Retrofitting both scrubbers and ballast water management systems is – or will soon be – required for many ships to comply with regulations. There are retrofit solutions available across all ship types, from cruise vessels to merchant and offshore ships. Space requirement is usually the most critical factor when planning and executing a retrofit project but Wärtsilä has found solutions to the challenge.

The execution of retrofit projects for both scrubbers and ballast water management systems requires similar types of planning and engineering. There are typically three things that are analysed when planning a retrofit of exhaust gas or a water cleaning system. First, the space requirements of the system are analysed, taking into consideration the available space in the vessel. Next, engineers study the impact of the additional systems in terms of their weight, ship stability in case of scrubber systems, structural modifications, and relocation of any existing equipment inside the ship. Finally, engineers assess how to further optimise the installation method, with the aim of minimising costs and downtime during installation.

“Retrofitting exhaust gas or ballast water cleaning systems is feasible for all ship types – but how it is done can vary depending on the ship type. Finding space for the system is the most common challenge. When it comes to scrubber installations, we, for example, sometimes need to make changes in the funnel shape or rethink the use of spaces in the vessel to create more room for cleaning systems. However, we have not come across any project in which retrofitting would not be possible. It is just a matter of identifying the best solution or compromise with the ship owner,” says Leonardo Sonzio, Director Retrofit, Wärtsilä Environmental Solutions.

According to Sonzio, the biggest cost factors in retrofits are the equipment, and the installation operations and material. Generally, the cost of the equipment varies depending on the type and size of the ship. The installation cost depends on the extent of modifications to the existing ship, and the time needed at the dry dock.  As a rule of thumb, equipment and installation each represent forty percent of the total price for a turnkey retrofit; the remaining twenty percent is related to engineering, project management, site management, logistics and class approval costs.

“We have delivered or are in the process of delivering dozens of new build and retrofit projects for scrubbers. These include tankers, bulk carriers, container vessels, ro-ros, cruise vessels and ferries. More and more inquiries are coming in from ship owners. Also, we are expecting the demand for ballast water management systems to grow steadily, and we have experience with both new build and retrofit cases. Our approach to a successful retrofit project is true partnership and thorough engineering and planning before the contract is even signed. This enables us to manage risks in close cooperation with our customer,” Sonzio explains.

Wärtsilä ballast water management systems use a two stage approach involving mechanical filtration of organisms followed by a choice of either UV treatment  or electro-chlorination. The Wärtsilä portfolio of scrubbers includes three configurations: seawater open loop scrubbers, closed loop scrubbers, and hybrid scrubbers. All three configurations include a wash water treatment plant to clean the effluents before discharge into the sea with no risk of harm to the environment.

Wärtsilä said it is the only company capable of providing both scrubber and ballast water systems combined with turnkey retrofit services. With its professional project organization, Wärtsilä is able to manage all kinds of retrofit projects worldwide. Wärtsilä’s global services network supports customers throughout the lifecycle of the ship.

The most evident approaching regulations for existing vessels are the IMO Marpol Annex VI focusing on sulphur oxide (SOx) emissions, and the IMO Global Ballast Water Convention.

Maritime Reporter July 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Ship Repair & Conversion

BAE Systems Awards Software Contract to SENER

The Spanish company SENER, Ingeniería y Sistemas S.A has closed a contract with U.K.-based BAE Systems PLC for the integration between FORAN CAD/CAM System and

Self-lubricating Bearing Polymer: Safe, Easy to Machine

Many plastics and metallic alloys present machining challenges as some deform and are difficult to maintain exacting tolerances, while others require strict and

Barcelona Yacht Repairer Adds New Shiplift

Yacht service, refit, repair and maintenance yard Marina Barcelona 92 (MB’92) has awarded a contract to Pearlson Shiplift Corporation (PSC) for the design and supply

Environmental

Self-lubricating Bearing Polymer: Safe, Easy to Machine

Many plastics and metallic alloys present machining challenges as some deform and are difficult to maintain exacting tolerances, while others require strict and

Diesel Spill in Houston Ship Channel

A small section of the Upper Houston Ship Channel was closed Tuesday morning after a report of 1,000 gallons of diesel entered Greens Bayou from a cement facility, the U.

New Load Measurement Solution for Port of Dampier

Strainstall designs and delivers a load measurement solution for the world’s largest floating wharf at Port of Dampier.   Strainstall, part of James Fisher and Sons plc,

Marine Power

Carnival’s Costa Brand Orders Two LNG Cruise Ships

Costa’s two new cruise ships will be the largest ever built based on guest capacity; Costa will join sister brand AIDA Cruises in building the first-ever cruise

Rolls-Royce Power Package for USS Zumwalt

Rolls-Royce announced delivery of the twin fixed pitch propellers to Bath Iron Works for installation on the U.S. Navy’s most modern surface combatant, the future USS Zumwalt,

Damen Delivers First Twin Axe FCS for O&G

Damen Maaskant Shipyards Stellendam have a decade-long relationship with the family-run Groen Offshore, Guard & Support, having built seismic research vessels and

News

Idreco Delivers Dredger for Hydro-Dam in Congo

Idreco (International Dredger Constructions) of the Netherlands informs it has designed, built and installed its second dredger, an ISD 600 with a digging depth of 30 meters,

BAE Systems Awards Software Contract to SENER

The Spanish company SENER, Ingeniería y Sistemas S.A has closed a contract with U.K.-based BAE Systems PLC for the integration between FORAN CAD/CAM System and

Hawboldt Secures Cape Sharp Tidal Winch Deal

A third Nova Scotian company has secured a multimillion dollar contract with the Cape Sharp Tidal project, which has potential to be the first grid-connected tidal array in the world.

Marine Equipment

Idreco Delivers Dredger for Hydro-Dam in Congo

Idreco (International Dredger Constructions) of the Netherlands informs it has designed, built and installed its second dredger, an ISD 600 with a digging depth of 30 meters,

Hawboldt Secures Cape Sharp Tidal Winch Deal

A third Nova Scotian company has secured a multimillion dollar contract with the Cape Sharp Tidal project, which has potential to be the first grid-connected tidal array in the world.

Self-lubricating Bearing Polymer: Safe, Easy to Machine

Many plastics and metallic alloys present machining challenges as some deform and are difficult to maintain exacting tolerances, while others require strict and

Vessels

New Research Vessel for University of New Hampshire

All American Marine, Inc. (AAM) has entered into a contract with the University of New Hampshire (UNH) for the design and construction of a new aluminum catamaran research vessel.

Carnival’s Costa Brand Orders Two LNG Cruise Ships

Costa’s two new cruise ships will be the largest ever built based on guest capacity; Costa will join sister brand AIDA Cruises in building the first-ever cruise

Rolls-Royce Power Package for USS Zumwalt

Rolls-Royce announced delivery of the twin fixed pitch propellers to Bath Iron Works for installation on the U.S. Navy’s most modern surface combatant, the future USS Zumwalt,

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Maritime Standards Navigation Offshore Oil Pod Propulsion Port Authority Shipbuilding / Vessel Construction Sonar
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.2176 sec (5 req/sec)