DR AS/NZS 60079.13:2019

This Standard adopts IEC 60079-13:2017 (ED 2.0) with modifications for Australia and New Zealand, which provides requirements for the design, construction, assessment, verification and marking of rooms used to protect internal equipment by pressurization or artificial ventilation or both as applicable when located in an explosive gas atmosphere or combustible dust atmosphere hazardous area with or without an internal source of a flammable gas or vapour. This Standard also includes requirements related to safety devices and controls necessary to ensure that artificial ventilation, purging and pressurization is established and maintained.
This Standard does not specify the methods that may be required to ensure adequate air quality for personnel with regard to toxicity and temperature within the room. National or other regulations and requirements may exist to ensure the safety of personnel in this regard.
Protection of rooms by using an inert gas or a flammable gas is outside of the scope of this Standard. It is recognized that such applications are special cases, which in part may be addressed using the principles from AS/NZS 60079.2, but in all probability will also be the subject of additional, stringent engineering standards, procedures and practices. Pressurized enclosures for equipment that are not intended to facilitate the entry of personnel are addressed in As/NZS 60079.2, and are not in the scope of this Standard.