IS0 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION IS0 RECOMMENDATION R 644

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1 WC : : : Ref. No.: l O / I? 644 w 1967 (El IS0 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION IS0 RECOMMENDATION R 644 CONVENTIONAL SIGNS TO BE USED IN SCHEMES FOR THE INSTALLATIONS OF VENTILATION SYSTEMS IN SHIPS 1st EDITION December 1967 COPYRIGHT RESERVED The copyright of IS0 Recommendations and IS0 Standards belongs to IS0 Member Bodies. Reproduction of these documents, in any country, may be authized therefe only by the national standards ganization of that country, being a member of ISO. F each individual country the only valid standard is the national standard of that country. Printed in Switzerland Also issued in French and Russian. Copies to be obtained through the national standards ganizations. Preisgruppe 19

2 BRIEF HISTORY The IS0 Recommendation R 644, Conventional signs to be used in schemes f the installations of ventilation systems in ships, was drawn up by Technical Committee ISO/TC 8, Shipbuilding Details, the Secretariat of which is held by the Nederlands Nmalisatie-instituut (NNI). Wk on this question by the Technical Committee began in 1960 and led, in 1965, to the adoption of a Draft IS0 Recommendation. In October 1965, this Draft IS0 Recommendation (No 856) was circulated to all the IS0 Member Bodies f enquiry. It was approved, subject to a few modifications of an editial nature, by the following Member Bodies: Argentina Australia Austria Belgium Brazil Canada Chile Czechoslovakia Finland France Germany India Israel Italy Japan Netherlands No Member Body opposed the approval of the Draft. New Zealand Poland Spain United Kingdom U.S.S.R. Yugoslavia The Draft IS0 Recommendation was then submitted by crespondence to the IS0 Council, which decided, in December 1967, to accept it as an IS0 RECOMMENDATION. -2-

3 IS0 / I (E) IS0 Recom.mendation R 644 December 1967 CONVENTIONAL SIGNS TO BE USED IN SCHEMES FOR THE INSTALLATIONS OF VENTILATION SYSTEMS IN SHIPS INTRODUCTION This IS0 Recommendation covers conventional signs to be used in schemes f the installations of ventilation systems in ships.* The symbols given in the Tables have been classified in the following manner: 1. General conventional signs... Page 4 2. Ducts and duct joints Appliances and fittings Ventilats Various conventional signs The general conventional signs concern symbols representing principal parts and appliances. The other signs are derived from the general basic signs. * Other IS0 Recommendations f conventional signs to be used in ships: IS0 Recommendation R 538, Conventional signs to be used in schemes f the installations of pipeline system in ships. IS0 Recommendation R..., Conventional signs to be used in schemes f the installations of sanitary systems in ships (at present Draft IS0 Recommendation No. 941). -3-

4 IS0 / R (E) 1. GENERAL, CONVENTIONAL SIGNS Duct Duct with indication of direction of flow 1.2 Apparatus and fitting NOTE. - The square should be either mentioned in the legend of the drawing accompanied by special abbreviations indicating the fitting concerned. cl NOTES. 1. Conventional signs, not mentioned in this IS0 Recommendation, can be derived from the General conventional signs under section 1, by adding an elucidation to the legend of the drawing. 2. See IS0 Recommendation R 538, Czventional signs to be used in schemes f the installations of pipeline system in ships.

5 ISO/ R (E) 2. DUCTS AND DUCT JOINTS 2.1 Flexible duct I I 2.2 Crossing of ducts not connected i-i- 2.3 Connection of ducts 1 I 2.4 Compensating joint with gland OX

6 ISO/R (E) 2.5 Bulkhead crossing, watertight, fire resistant 4 J+ 2.6 Bulkhead crossing, non watertight, non T fire resistant 1 1. T 2.7 Duct going upwards (+) -. k+ 2.8 Duct going downwards (-) -6-

7 2.9 Vanes i-f -7-

8 IS0 / R (E) 3. APPLIANCES AND FITTINGS 3.1 Butterfly damper. 4 ;Mr 3.2 Change over damper - \\ \ * 3.3 Reducing damper --q- * 3.4 Distributing damper * The arrow gives the direction of flow of the air, but need not be drawn in drawings and/ schemes.