Gas Freeing Fans
Gas Freeing of Cargo Holds is a Critical Safety Requirement for Tank Entry.
Cargo Tank entry is not premitted unless the Oxygen Content is 21% or more and the hydrocarbon vapor content is less than 1% of the Lower Flammable Level.
If the previous Cargo contains Hydrogen Sulphide (H2S) or other toxic contaminants which could evolve toxic gases (e.g. benzene, toluene, mercaptans etc) the tank should be checked for such gases.
There are two types of gas freeing fan: deep penetration high volume fan and low penetration high volume fan.
The most efficient way of gas freeing is to use a Deep Penetration High Volume fan arranged to blow air into the tank. This arrangement offers the fastest Gas Freeing process. (Refer to the Gas Freeing Arrangement Drawing below.)
All the Dasic Gas Freeing Fans are of the Deep Penetration High Volume Design to give the operator the most efficient gas freeing process.
The Gas Freeing Range
Jetfan 125 Water Driven
The Jetfan 125 is the most efficient deep penetration gas freeing fan on the market. Its robust design has been proven with in excess of 8000 units operating in the most arduous conditions.
Jetfan 85 Air Driven
The Jetfan 85 is the air driven option of the Jetfan 125 Its robust design has been proven with in excess of 8000 units operating in the most arduous conditions from VLCC’s to continuous operation on FPSO’s.
Jetfan 65 Air Driven
The Jetfan 65 offers excellent ventilating capabilities for small to mid tonnage vessels. The rigid but lightweight all stainless steel construction ensures that the Jetfan 65 is totally portable and capable of being used in virtually any location.
Jetfan 50 Water Driven
The Water Driven Jetfan 50 offers excellent ventilating capabilities for small to mid tonnage vessels. The rigid but lightweight all stainless steel construction ensures that the Jetfan 50 is totally portable and capable of being used in virtually any location.
