GB/T 3836.33-2021Explosive atmospheres - Part 33: Equipment in adverse service conditions (English PDF)

Foreword

This document was drafted in accordance with the rules in GB/T 1.1-2020 Directives

for Standardization - Part 1: Rules for the Structure and Drafting of Standardizing

Documents.

This document is Part 33 of GB/T 3836 Explosive Atmospheres. GB/T 3836 has

released 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 Vapor 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 Ma 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 adopts the re-drafting method in the modification and adoption of IEC

TS 60079-43:2017 Explosive Atmospheres - Part 43: Equipment in Adverse Service

Conditions.

This document makes the following structural adjustment:

---The sequence of Appendix B and Appendix C is adjusted.

The technical differences between this document and IEC TS 60079-43:2017, and the

causes for the differences are as follows:

---In terms of Normative References, this document makes certain adjustments

with technical differences, so as to adapt to the technical conditions of China.

The adjustments are intensively reflected in Chapter 2 "Normative References".

See the specific adjustments below:

 GB/T 3836.1, which modifies and adopts international standard, is used to

replace IEC 60079-0 (see Chapter 3);

 GB/T 3836.4, which modifies and adopts international standard, is used to

replace IEC 60079-11 (see 6.2);

 GB/T 3836.15, which modifies and adopts international standard, is used

to replace IEC 60079-14 (see 5.1);

 GB/T 3836.16, which equivalently adopts international standard, is used to

replace IEC 60079-17 (see 5.1);

 GB/T 4942.1, which equivalently adopts international standard, is used to

replace IEC 60034-5 (see 5.3);

 GB/T 4208, which equivalently adopts international standard, is used to

replace IEC 60529 (see 5.3);

 IEC 60721-1 and IEC 60721-2-1 are deleted; the corresponding GB/T 4796

and GB/T 4797.1 are moved to Bibliography;

 IEC 60068 (all parts) and IEC TR 60721-4 (all parts) are deleted; the

corresponding GB/T 2423 (all parts) and GB/T 20159 (all parts) are moved

to Bibliography.

This document makes the following editorial modifications:

---In order to be consistent with the existing standard series, the title of this

document is modified into Explosive Atmospheres - Part 33: Equipment in

Adverse Service Conditions;

---NOTEs regarding Appendix A and Appendix B are added to 5.1;

---Bibliography is modified.

Please be noted that certain content of this document may involve patents. The

institution issuing this document does not undertake the responsibility of identifying

these patents.

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).

Explosive Atmospheres - Part 33: Equipment in

Adverse Service Conditions

1 Scope

This document provides guidance for equipment used in explosive atmospheres with

an ambient temperature of below -20 °C and other additional adverse conditions

(including marine applications).

This document provides recommendations for the design, manufacture and application

of this type of equipment. This document is applicable to equipment operating within

the range of environmental conditions specified in the explosion-proof certificate.

NOTE: see the classification of climatic conditions in details in GB/T 4796, GB/T 4797 (all

parts), GB/T 4798 (all parts) and GB/T 2421.

This document is used together with other relevant parts of GB/T 3836.

2 Normative References

The contents of the following documents constitute indispensable clauses of this

document through normative references in the text. In terms of references with a

specified date, only versions with a specified date are applicable to this document. In

terms of references without a specified date, the latest version (including all the

modifications) is applicable to this document.

GB/T 3836.1 Explosive Atmospheres - Part 1: Equipment - General Requirements

(GB/T 3836.1-2021, IEC 60079-0:2017, MOD)

GB/T 3836.4 Explosive Atmospheres - Part 4: Equipment Protection by Intrinsic Safety

"i" (GB/T 3836.4-2021, IEC 60079-11:2011, MOD)

GB/T 3836.15 Explosive Atmospheres - Part 15: Electrical Installations Design,

Selection and Erection (GB/T 3836.15-2017, IEC 60079-14:2007, MOD)

GB/T 3836.16 Explosive Atmospheres - Part 16: Electrical Installations Inspection and

Maintenance (GB/T 3836.16-2017, IEC 60079-17:2007, IDT)

GB/T 4208 Degrees of Protection Provided by Enclosure (IP code) (GB/T 4208-2017,

IEC 60529:2013, IDT)

GB/T 4942.1 Degrees of Protection Provided by the Integral Design of Rotating

Electrical Machined (IP code) - Classification (GB/T 4942.1-2006, IEC 60034-5:2000,

IDT)

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