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Homepage>ISO Standards>ISO 561:1989-Coal preparation plant-Graphical symbols
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download between 0-24 hoursReleased: 1989
ISO 561:1989-Coal preparation plant-Graphical symbols

ISO 561:1989

ISO 561:1989-Coal preparation plant-Graphical symbols

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Standard´s number:ISO 561:1989
Pages:13
Edition:2
Released:1989
DESCRIPTION

ISO 561:1989


The symbols have been selected in accordance with the following principles: a) the plants should be widely used; b) the symbols should be easy to draw and readily be distinguishable one from another; c) the principle and not the appearance of any particular type of machine should be represented, d) where a single symbol represents a group of items for which separate symbols are s-tandardized nationally, the ISO symbol should be readily distinguishable from any one of the national symbols.