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AS/NZS 1826(Int):2006 Electrical Equipment for Explosive Gas Atmospheres - Special protection - Type of protection 's'

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The Coal Mining Safety and Health Regulation 2001 (Qld) states:

explosion protection category Ex s means explosion protection category Ex s under AS 1826 ‘Electrical equipment for explosive atmospheres—Special protection—Type of protection s’, section 4.3

The standard referred to in the legislation AS 1826 ‘Electrical equipment for explosive atmospheres—Special protection—Type of protection s’, has been superseded by AS/NZS 1826(Int):2006 (this Standard).


About this Standard:

This Standard specifies requirements relating to design, construction, testing and marking of electrical equipment which can be shown by test or assessment to be suitable for use in explosive gas atmospheres. It is may be used by certification bodies in the testing and/or assessment of equipment for certification.

It is applicable to Group I and Group II as defined in AS/NZS 60079.0.
It is applicable to apparatus intended for Zone 0, Zone 1, or Zone 2 as defined in AS/NZS 60079.10. The apparatus shall be designed tested and marked according to the Zone for which it is intended.

This Interim Standard supplements the general requirements in AS/NZS 60079.0 and the requirements of the standardized types of protection, in accordance with the AS/NZS 60079 series.

This Interim Standard shall not be used for apparatus or any parts of apparatus that could be designed and tested to one or more existing explosion-protection techniques as described in AS/NZS 60079 series or IEC equivalent, or to combinations of techniques as described in AS/NZS 60079.26. This Interim Standard shall not be considered as a last resort in the event that apparatus fails compliance to the 60079 series.

This may mean that modification of the design will be necessary to meet the requirements of the established techniques.

This Interim Standard may also be used to design and test apparatus that is required to be used in a Zone of higher hazard than the underlying protection techniques allow. This shall require additional control measures to be applied, or additional design and test requirements to be applied.

Ex ’s’ shall only be considered where design options are limited for technical, operational or functional reasons.


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