Essential for safe and efficient vessel operations.

They remove hazardous vapors from tanks and enclosed spaces, replacing them with fresh air to create a safe working environment. This is critical before inspection, maintenance, or cargo changeover, where the presence of residual gases can pose serious safety risks.
By ensuring proper ventilation, gas freeing fans help reduce downtime, support regulatory compliance, and protect both crew and equipment—making them a vital part of any vessel’s safety and operational readiness. 

Why it is essential:

Removal of Hazardous Gases

• After unloading cargo—especially oil, chemicals, or other volatile substances—residual vapors can remain in the tanks. These vapors may be: flammable, toxic or even explosive
• Gas freeing fans ventilate the tanks to remove these vapors and reduce concentrations to safe levels.

Compliance with Safety Regulations

• International maritime regulations (like SOLAS and MARPOL) require vessels to gas-free tanks before:
• Entry by crew or inspectors
• Hot work (e.g., welding)
• Tank cleaning or maintenance

Cargo Changeover

• When switching between different cargoes (e.g., from crude oil to clean products), tanks must be gas-free to avoid contamination or chemical reactions.

Safe Tank Entry

Before any personnel can enter a tank, it must be confirmed as:

• Gas-free
• Oxygen-rich
• Free of harmful vapors
• Gas freeing fans help achieve these conditions quickly and efficiently.

Scanjet offers two types of gas freeing fans—water-driven and air-driven—designed to ensure safe and effective ventilation onboard. Both solutions are tailored to the vessel’s specific requirements and are delivered complete with hoses and ducting, providing a flexible and reliable setup for efficient gas freeing operations.