GB/T 3836.34-2021: Explosive atmospheres - Part 34: Equipment assemblies

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Scope

This document specifies requirements for the design, construction, assembly, testing,
inspection, marking, documenting and assessment of equipment assemblies for use in
explosive atmospheres under the responsibility of the manufacturer of the equipment
assembly.
The requirements of this document apply to individual items according to GB/T 3836
(all parts) that comprise the assembly and that have individual certificates. These
individual items are then integrated as part of the equipment assembly. Also included
are requirements to address aspects for the assembly which may be beyond the
certificates of the individual items forming the assembly.
The scope of this document includes assessment of the additional requirements for
assemblies for hazardous areas and does not include requirements for non-hazardous
areas. It is assumed that compliance with other electrical or mechanical requirements
that are applicable for non-hazardous areas will be verified by either the same or
different party in addition to the requirements of this document.
This document does not apply to:
- equipment which is covered, in its entirety, by one or more GB/T 3836 equipment
types of protection;
- pressurized rooms, “p”, in accordance with GB/T 3836.17, artificial ventilation for
the protection of analyzer(s) houses in accordance with IEC TR 60079-16, and
other standards addressing specific Ex assemblies;
- installation at the end-user site under the scope of GB/T 3836.15;
- classification of the hazardous area;
- inherently explosive situations and dust from explosives or pyrophoric substances
(for example explosives manufacturing and processing);
- rooms used for medical purposes;
- electrical installations in areas where the hazard is due to flammable mist.
This document is only intended to provide validation for the initial supply of an
assembly.
Note 1: Additional guidance on the requirements for hazardous atmospheres due to hybrid mixtures
of flammable dust or flyings and flammable gas or vapour is provided in GB/T 3836.15.
Where a requirement of this document conflicts with a requirement of either GB/T
3836.1 or GB/T 3836.28, the requirement of this document takes precedence.
Note 2: The only requirements of this document that take precedence over GB/T 3836.1 and GB/T
3836.28 are the markings for equipment assemblies.
Note 3: This document does not consider the special circumstances of underground coal mines; but
the equipment assembly for underground coal mines may refer to it for use.

Basic Data

Standard ID	GB/T 3836.34-2021 (GB/T3836.34-2021)
Description (Translated English)	Explosive atmospheres - Part 34: Equipment assemblies
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	K35
Word Count Estimation	19,152
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration