2.3 Conditions and guidelines for calculating air requirements
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Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC/Circular.729 – Design Guidelines and Operational Recommendations for Ventilation Systems in Ro-Ro Cargo Spaces – (Adopted on 4 July 1996) - Part 1 - Design Guidelines and Operational Recommendations for Ventilation Systems in Ro-Ro Cargo Spaces - 2 Ventilation - 2.3 Conditions and guidelines for calculating air requirements

2.3 Conditions and guidelines for calculating air requirements

 The function of a ventilation system in a ro-ro cargo space is to dilute and remove the vehicle exhaust gases and other hazardous gases, to protect persons working in the area from being exposed to a hazardous or disagreeable level of air pollution. The basic particulars necessary for calculating the supply air required are contained in Appendix 1. These may be used as reference in the planning of new installations or in the assessments of the capacity of existing installations.

The formula given in Appendix 1 is similar to that used for calculating the supply air required for ro-ro cargo spaces in ships. However, the formula also takes into account the fact that the outdoor air supplied contains a certain amount of pollutant and also includes a dilution factor. The latter takes into account the degree of estimated or possible dilution of the pollutants in the air (see Appendix 1, paragraph 6).

In addition to the supply air required to dilute and remove the exhaust gases, it is also important to ensure air circulation in the ro-ro cargo space.

Parent topic: 2 Ventilation
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