1 Scope
This part of IEC 60079 contains the specific requirements for design, construction and
assessment of intrinsically safe systems, Type of Protection “i”, intended for use, as a whole or
in part, in locations in which the use of Group I, II or III Ex Equipment is required.
NOTE 1 This standard is intended for use by the designer of the system e.g. a person who could be a manufacturer,
a specialist consultant or a member of the end-user’s staff.
This document supplements and modifies the general requirements of IEC 60079-0 and the
intrinsic safety standard IEC 60079-11. Where a requirement of this standard conflicts with a
requirement of IEC 60079-0 or IEC 60079-11, the requirement of this standard takes
precedence.
The installation requirements of Group II or Group III systems designed in accordance with this
standard are specified in IEC 60079-14.
NOTE 2 Group I installation requirements are presently not provided in IEC 60079-14. Installation requirements for
Group I are being considered.
The requirements of the IEC 60079 series of Standards cover protection with respect to explosion
hazard only. The CSA C22.2 No. 60079 series of Standards (based on the adoption of corresponding IEC
Standards) is to be used in conjunction with other applicable Standards containing the appropriate
electrical safety requirements for general use equipment.
This Standard applies to electrical installation systems intended to be installed or used in accordance
with CSA C22.1, Canadian Electrical Code Part I.
General requirements applicable to electrical products are provided in CSA C22.2 No. 0.