GB/T 3836.34-2021 English PDF (GBT3836.34-2021)

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GB/T 3836.34-2021: Explosive atmospheres -- Part 34: Equipment assemblies
GB/T 3836.34-2021
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 29.260.20
CCS K 35
Explosive atmospheres - Part 34: Equipment assemblies
(IEC TS 60079-46:2017, Explosive atmospheres - Part 46: Equipment
assemblies, MOD)
ISSUED ON: OCTOBER 11, 2021
IMPLEMENTED ON: MAY 01, 2022
Issued by: State Administration for Market Regulation;
Standardization Administration of the PRC.
Table of Contents
Foreword ... 3 
Introduction ... 7 
1 Scope ... 10 
2 Normative references ... 11 
3 Terms and definitions ... 11 
4 General requirements for equipment assemblies ... 12 
5 Design of equipment assemblies ... 14 
6 Construction and assembly ... 17 
7 Certificate ... 22 
8 Marking ... 23 
Annex A (Informative) Degree of consistency between each part of GB/T 3836 and
each part of international standards ... 26 
Bibliography ... 29 
Foreword
This document is drafted in accordance with GB/T 1.1-2020 "Directives for
standardization - Part 1: Rules for the structure and drafting of standardizing
documents".
This document is Part 34 of GB/T 3836 "Explosive atmospheres". GB/T 3836 has
issued the following parts:
- Part 1: Equipment - General requirements;
- Part 2: Equipment protection by flameproof enclosures "d";
- Part 3: Equipment protection by increased safety "e";
- Part 4: Equipment protection by intrinsic safety "i";
- Part 5: Equipment protection by pressurized enclosure "p";
- Part 6: Equipment protection by liquid immersion “o”;
- Part 7: Equipment protection by powder filling “q”;
- Part 8: Equipment protection by type of protection 'n';
- Part 9: Equipment protection by encapsulation 'm';
- Part 11: Material characteristics for gas and vapour classification - Test methods
and data;
- Part 12: Material characteristics for combustible dusts - Test methods;
- Part 13: Equipment repair, overhaul, reclamation and modification;
- Part 14: Classification of areas - Explosive gas atmosphere;
- Part 15: Electrical installations design, selection and erection;
- Part 16: Electrical installations inspection and maintenance;
- Part 17: Equipment protection by pressurized room “p” and artificially ventilated
room “v”;
- Part 18: Intrinsically safe electrical systems;
- Part 20: Equipment with equipment protection level (EPL) Ga;
- Part 21: Application of quality systems for equipment manufacture;
- Part 22: Protection of equipment and transmission system using optical radiation;
- Part 23: Group Ⅰ, category EPL equipment intended to remain functional in
atmospheres endangered by firedamp and/or coal dust;
- Part 24: Equipment protection by special protection “s”;
- Part 25: Requirements for process sealing between flammable process fluids and
electrical systems;
- Part 26: Electrostatic hazards - Guidance;
- Part 27: Electrostatic hazards - Test;
- Part 28: Non-electrical equipment for explosive atmospheres - Basic method and
requirements;
- Part 29: Non-electrical equipment for explosive atmospheres - Constructional
safety 'c', control of ignition source 'b', liquid immersion 'k';
- Part 30: Equipment and components in explosive atmospheres in underground
mines;
- Part 31: Equipment dust ignition protection by enclosure 't';
- Part 32: Intrinsically safe systems with electronically controlled spark duration
limitation;
- Part 33: Equipment in adverse service conditions;
- Part 34: Equipment assemblies;
- Part 35: Classification of areas for explosive dust atmospheres.
This document uses the redraft law to modify and adopt IEC TS 60079-46:2017
"Explosive atmospheres - Part 46: Equipment assemblies".
The technical differences between this document and IEC TS 60079-46:2017 and their
reasons are as follows:
- As for the normative references, this document has made adjustments with
technical differences, to adapt to the technical conditions of China. The
adjustments are mainly reflected in Clause 2 “Normative references”. The specific
adjustments are as follows:
 Replace IEC 60079-0 with GB/T 3836.1 which modifies and adopts the
international standard (see Clause 1, etc.);
 Replace IEC 60079-10-1 with GB 3836.14 which is identical to the
international standard (see 4.3.2);
 Replace IEC 60079-14 with GB/T 3836.15 which modifies and adopts the
international standard (see Clause 3, etc.);
 Replace ISO/IEC 80079-34 with GB/T 3836.21 which modifies and adopts the
international standard (see 4.4);
 Replace ISO 80079-36 with GB/T 3836.28 which modifies and adopts the
international standard (see Clause 1, etc.);
 Replace IEC 60079-10-2 with GB/T 3836.35 which modifies and adopts the
international standard (see 4.3.2);
 Replace IEC 60079 (all parts) and ISO 80079 (all parts) with GB/T 3836 (all
parts). See Annex A for the degree of consistency between parts;
 Delete IEC 60079-25 and move the corresponding GB/T 3836.18 to
Bibliography.
The following editorial changes have been made to this document:
- In order to be consistent with the existing standard series, change the name of this
document to "Explosive atmospheres - Part 34: Equipment assemblies";
- Add Note 3 about the equipment assembly used in underground coal mines (see
Clause 1);
- Add a note on 3.1 "Equipment assembly";
- Delete the note on 3.2 "Assembly certificate";
- Add a note about GB/T 2900.35 (see Clause 3);
- Add the Bibliography.
Attention is drawn to the possibility that some of the elements of this document may be
the subject of patent rights. The issuing authority of this document shall not be held
responsible for identifying any or all such patent rights.
This document was proposed by China Electrical Equipment Industry Association.
This document shall be under the jurisdiction of National Technical Committee 9 on
Explosion Protected Electrical Apparatus of Standardization Administration of China
(SAC/TC 9).
Drafting organizations of this document: Nanyang Explosion Protected Electrical
Explosive atmospheres - Part 34: Equipment assemblies
1 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...