The total airflow Q to the engine room shall be at least the larger value of the two following calculations. Combustion air to, and heat emission from, all equipment installed within the casing and funnel shall not be taken into account. The calculations shall be based on simultaneous maximum rating of main propulsion diesel engine s , diesel generator engine s , boiler s and other machinery under normal sea conditions, and on a temperature increase of 12,5 K.
The calculations should, to the greatest possible extent, be based on information from the manufacturers. Guidance values given in this International Standard should be used only when manufacturers' information is not available. In order to ensure satisfactory air distribution, combustion air to, and heat emission from, main propulsion diesel engine s , diesel generator engine s , generator s , boiler s , and possibly other machinery with considerable heat emission, shall be calculated separately including other conditions as necessary.
Spaces separated from the main engine room, such as individual auxiliary engine rooms, boiler rooms and separator rooms, shall also be calculated separately. The sum of the airflow for combustion, qc, shall be calculated, in cubic metres per second, as follows:. The airflow for combustion for the main propulsion diesel engine s , qdp, shall be calculated, in cubic metres per second, as follows:.
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Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and nongovernmental, in liaison with ISO, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. This second edition cancels and replaces the first edition ISO , of which it constitutes a technical revision.
This is a free 5 page sample. Annex A of this International Standard is for information only. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher.
Annex A provides guidance and good practice in the design of ventilation systems for ships' engine rooms. NOTE — Users of this International Standard should note that, while observing the requirements of the standard, they should at the same time ensure compliance with such statutory requirements, rules and regulations as may be applicable to the individual ship concerned.
At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards listed below.
ISO , Reciprocating internal combustion engines — Performance — Part 1: Standard reference conditions, declarations of power, fuel and lubricating oil consumptions, and test methods. ISO , Air distribution and air diffusion — Vocabulary. Temperature rise from air intake to air passing from the engine room up to the casing entrance shall be max.
The capacity of the ventilation plant should be such as to provide comfortable working conditions in the engine room, to supply the necessary combustion air to the diesel engine s and boiler s , and to prevent heat-sensitive apparatus from overheating.
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