Fans for marine and offshore applications

Centrifugal fans for marine and offshore applications

Cargo and container ships, as well as offshore platforms (primarily dedicated to oil or gas extraction), require efficient ventilation systems to prevent condensation, dissipate gases, and remove heat. This is especially important if the cargo generates heat or poses a combustion risk. In such cases, ventilation not only protects the transported goods and the integrity of the vessel but is also vital for the crew's safety.

Marine environments present extreme conditions, such as high humidity, salinity, heat, corrosive substances, and constant vibrations, which often occur simultaneously. It is common for barges to transport chemicals that must be ventilated properly to avoid risks. Ventilation is key in various types of vessels, such as:

• Cruise ships
• Yachts
• Cargo and passenger ferries
• Icebreakers
• Tugboats
• Naval vessels
• Offshore platforms
• Offshore accommodations

Recommended fans from Casals Ventilación

Casals Ventilación offers a wide range of fans specifically designed for marine and offshore applications, including:

• NIMUS
• NIMAX
• KASTORM
• MBCA
• HM / HMA
• HC / HCA
• HB / HCA
• ATEX fans: In some marine applications, it is essential to install ATEX-certified fans for explosive atmospheres. This is crucial when transporting or storing chemicals or flammable materials that generate potentially hazardous atmospheres. ATEX fans ensure safe operation under these conditions..

Anti-corrosive finishes for extreme conditions

Fans used in marine environments must be prepared to withstand highly corrosive conditions. Casals Ventilación offers centrifugal fans made from stainless steel or with marine-grade finishes, such as C3, C4, and C5M, according to the ISO 12944 standard:

• Stainless steel 304: Recommended for environments with moderate exposure to corrosion, such as the interiors of ships or areas protected from direct contact with extreme salinity.
• Stainless steel 316: Specifically designed to resist corrosion in highly aggressive environments, such as areas exposed to direct saltwater and highly corrosive atmospheres in offshore applications.
• C3: Ideal for urban and industrial atmospheres and areas with high humidity.
• C4: Suitable for industrial and coastal environments, as well as chemical plants.
• C5M: Recommended for high-salinity areas, such as marine environments, offshore platforms, and coastal zones.

Motors for marine use

Marine service motors are essential in various applications, including military vessels, offshore platforms, and passenger and cargo ships. These motors are designed to operate in extreme conditions, such as salt-laden atmospheres, constant humidity, and corrosive environments.

Options for marine motor certifications:

• IEEE 45
• USCG (United States Coast Guard)
• ABS (American Bureau of Ships – USA)
• Lloyd's Register (United Kingdom)
• DNV (Det Norske Veritas – Norway)

Where are ATEX fans required?

In marine applications, installing ATEX-certified fans is crucial where there is a risk of explosions due to the presence of explosive atmospheres, which can be generated by flammable gases, vapours, or dust.

Below are specific examples:

• Barges transporting chemicals: These vessels often carry cargo such as fuels, solvents, or petrochemical products that emit flammable vapours. Adequate ventilation is essential to prevent the accumulation of gases that could form an explosive atmosphere.
• Oil and gas tankers: The cargo and storage spaces of these ships contain petroleum products that generate volatile vapours. ATEX fans are necessary to safely ventilate these compartments and prevent explosion risks.
• Offshore oil and gas platforms: In these facilities, large volumes of natural gas and oil are handled, which can generate explosive atmospheres. ATEX fans are used in drilling areas, storage zones, and machinery rooms to ensure a safe environment for workers.
• Engine rooms on ships: Engine rooms contain motors and generators that, in combination with fuel or gas leaks, can form explosive atmospheres. ATEX fans are essential to maintain proper ventilation and prevent the ignition of these gases.
• Cargo areas on ships transporting hazardous chemicals: Ships that transport substances such as alcohols, solvents, or liquefied gases require ATEX ventilation in the holds to prevent the formation of explosive atmospheres.
• Liquefied gas carriers (LNG & LPG): These vessels transport liquefied gases that, under certain conditions, can evaporate and form explosive mixtures. ATEX ventilation is used in cargo and storage areas to prevent accidents.