ISO 561:1989

Coal preparation plant — Graphical symbols

Datum objavljivanja: 30. 11. 1989.

Опште информације

Trenutna faza: 90.93 Effective date: 16. 5. 2023.

Inicijator: ISO

Pripada: ISO/TC 27/SC 1

Vrsta: Međunarodni standard

ICS: 01.080.30 73.120

Jezik: francuski engleski

Kupovina

Status: Objavljen

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Apstrakt

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.