This standard supplements and modifies the general requirements of IEC 60079-0, except as
indicated in Table 1. Where a requirement of this standard conflicts with a requirement of
IEC 60079-0, the requirements of this standard shall take precedence.
If requirements in this standard are applicable to both intrinsically safe apparatus and
associated apparatus the term “apparatus” is used throughout the standard.
This standard is for electrical equipment only; therefore the term “equipment” used in the
standard always means “electrical equipment”.
If associated apparatus is placed in the explosive atmosphere, it shall be protected by an
appropriate Type of Protection listed in IEC 60079-0, and then the requirements of that method
of protection together with the relevant parts of IEC 60079-0 also apply to the associated
apparatus.