3 Calculations
Clasification Society 2024 - Version 9.40
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 2 - Operational Recommendations for Minimizing Air Pollution in Ro-Ro Cargo Spaces - Appendix 2 - Measurement of Air Flow - 3 Calculations

3 Calculations

 The air flow rate at each supply-extract grille is calculated as follows:

Air flow rate (m3 /s) = 'indicated velocity' (m/s) x area of supply/extract grille (m2)

The global rate of air change per hour achieved by the vehicle deck ventilation system(s) is subsequently calculated as follows:

Parent topic: Appendix 2 - Measurement of Air Flow
Copyright 2022 Clasifications Register Group Limited, International Maritime Organization, International Labour Organization or Maritime and Coastguard Agency. All rights reserved. Clasifications Register Group Limited, its affiliates and subsidiaries and their respective officers, employees or agents are, individually and collectively, referred to in this clause as 'Clasifications Register'. Clasifications Register assumes no responsibility and shall not be liable to any person for any loss, damage or expense caused by reliance on the information or advice in this document or howsoever provided, unless that person has signed a contract with the relevant Clasifications Register entity for the provision of this information or advice and in that case any responsibility or liability is exclusively on the terms and conditions set out in that contract.