2004-01-5945 - Pravilnik o grafičnih znakih za izdelavo prilog študij požarne varnosti in požarnih redov

IEC 60079-10-1:2020 is concerned with the classification of areas where flammable gas or vapour hazards may arise and may then be used as a basis to support the proper design, construction, operation and maintenance of equipment for use in hazardous areas.
It is intended to be applied where there may be an ignition hazard due to the presence of flammable gas or vapour, mixed with air, but it does not apply to:
a) mines susceptible to firedamp;
b) the processing and manufacture of explosives;
c) catastrophic failures or rare malfunctions which are beyond the concept of normality dealt with in this standard;
d) rooms used for medical purposes;
e) domestic premises;
f) where a hazard may arise due to the presence of combustible dusts or combustible flyings but the principles may be used in assessment of a hybrid mixture.
Flammable mists may form or be present at the same time as flammable vapour. In such case the strict application of the details in this document may not be appropriate. Flammable mists may also form when liquids not considered to be a hazard due to the high flash point are released under pressure. In these cases the classifications and details given in this document do not apply.
For the purpose of this document, an area is a three-dimensional region or space.
Atmospheric conditions include variations above and below reference levels of 101,3 kPa (1 013 mbar) and 20 °C (293 K), provided that the variations have a negligible effect on the explosion properties of the flammable substances.
In any site, irrespective of size, there may be numerous sources of ignition apart from those associated with equipment. Appropriate precautions will be necessary to ensure safety in this context. This standard is applicable with judgement for other ignition sources but in some applications other safeguards may also need to be considered. E.g. larger distances may apply for naked flames when considering hot work permits.
This document does not take into account the consequences of ignition of an explosive atmosphere except where a zone is so small that if ignition did occur it would have negligible consequences.
This third edition of IEC 60079-10-1 cancels and replaces the second edition, published in 2015, and constitutes a technical revision, see foreword for further details.

NEW! IEC 60079-10-2:2015 is available as IEC Standards+ 60079-10-2:2015 which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60079-10-2:201 5 is concerned with the identification and classification of areas where explosive dust atmospheres and combustible dust layers are present, in order to permit the proper assessment of ignition sources in such      areas.  In  this standard,  explosive dust atmospheres  and combustible  dust layers are treated    separately.    In Clause 4, area classification for  explosive dusts  clouds is described, with dust layers acting as one     of the possible  sources  of release. In Clause  7  other general  considerations for  dust layers are described. The examples  in this standard are based on a system of effective housekeeping being implemented in the plant    to    prevent  dust layers from accumulating. Where effective housekeeping   is not  present, the area   classification   includes  the possible  formation of  explosive dust  clouds from dust layers. The principles   of this standard can  also  be followed when combustible fibres or flyings might cause a hazard. This standard is    intended to   be applied where there can be  a  risk due to the presence  of explosive   dust   atmospheres or combustible  dust layers   under normal  atmospher ic  conditions. Please  refer  to the foreword of the document  for a detailed listing of the  significant   technical changes from the previous edition.
Keywords: explosive dust atmospheres, combustible dust layers, ignition hazards

Ta slovenski standard predpisuje obliko, velikost, barve, izvedbo in namestitev varnostnih
znakov za ozna~itev smeri evakuacijskih poti in izhodov ter znakov za ozna~itev naprav za
ga{enje in ro~nih javljalnikov po`ara.

Establishes symbols to be used in architectural, engineering, building and allied design fields to provide details of equipment for fire protection, fire-fighting and means of escape on drawings for design, construction, renovation or fire certification purposes.