Zones

Where a potential explosive atmosphere can occur, certain safety levels need to be taken into account regarding the possible danger of an explosion in this area. The areas therefore need to be devided into zones according to presence of the flammable materials. 

Zone 0

Zone 1

Zone 2

A place where the explosive atmosphere of flammable gas is present continously or for a period of frequently

A place where the explosive atmosphere of flammable gas is likely to occur in normal operation occasionally

A place where the explosive atmosphere of flammable gas is not likely to occur in normal operation, but if it does occur it will only be present for a short period

Zone 20

Zone 21

Zone 22

A place where an explosive dust atmosphere is present continuosly or for a long period of time

A place where an explosive dust atmosphere is likely to occur during normal operation

A place where an explosive dust atmosphere is not likely to occur during normal operation, but if it does occur it will be present for a short period


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QUALITY ASSURANCE

During all stages of our manufacturing and production process, a fully documented and approved Quality Assurance System to ISO 9001 is imposed to ensure the highest quality throughout.
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DNH AS   Gruvevn. 2-4, 3770 Kragerø, Norway   Phone: + 47 35 98 56 00   Fax: + 47 35 98 56 10   E-mail: dnh@dnh.no  
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