UL 80079-37:2021

1 Scope

This

standard

part of ISO/IEC 80079

specifies the requirements for the design and construction of non-electrical equipment, intended for use in explosive atmospheres, protected by the types of protection constructional safety “c”, control of ignition source “b” and liquid immersion “k”.

This

standard

part of ISO/IEC 80079

supplements and modifies the requirements in

ISO

UL

80079-36. Where a requirement of this standard conflicts with the requirement of

ISO

UL

80079-36 the requirement of this standard takes precedence.

Types of Protection “c”, “k” and “b” are not applicable for Group I, EPL Ma

without additional protective precautions

.

The types of ignition protection described in the standard can be used either on their own or in combination with each other to meet the requirements for equipment of

Group I,

Group II, and Group III depending on the ignition hazard assessment in

ISO

UL

80079-36.

Where references are made to IEC and ISO standards, the referenced requirements found in these standards shall apply as modified by any applicable US National Differences for that standard (see clause 2).

NOTE In the US, the authority having jurisdiction for underground mines is the Mine Safety and Health Administration (MSHA) of the federal government. There are additional regulations beyond the requirements detailed here that will also apply.

Published Code	UL
Published By	Underwriters Laboratories Inc.
Publication Date	2021-06-23
Pages Count	66
Language	English
Edition	1
File Size	1.1 MB