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GB/T 3836.17-2019Explosive atmospheres -- Part 17: Equipment protection by pressurized room p and artificially ventilated room v (English PDF)

爆炸性环境第17部分：由正压房间“p”和人工通风房间“v”保护的设备

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

December 31, 2019

Implementation date

July 1, 2020

Scope

GB/T 3836.17-2019 is the English-translated version of 爆炸性环境第17部分：由正压房间“p”和人工通风房间“v”保护的设备.

GB/T 3836.17-2019 is the Chinese standard "Explosive atmospheres -- Part 17: Equipment protection by pressurized room p and artificially ventilated room v".

Its scope clause reads: This section of the Explosive Environment specifies the design, construction, assessment, testing and marking of rooms used to protect internal equipment in the following locations Requirements. --- Located in Zone 1 or Zone 2, or Zone 21 or Zone 22 in explosive environments (areas that normally require EPLGb, Gc, Db or Dc), A room protected by positive pressure without a gas/vapor release source inside; --- Located in the explosive environment of Zone 2 (the area where EPLGc is usually required), the interior does not contain gas/vapor release sources and is manually ventilated Protected room; --- In non-hazardous areas, rooms containing gas/vapor release sources inside, protected by artificial ventilation; --- Located in Zone 1 or Zone 2, or Zone 21 or Zone 22 in explosive environments (areas that normally require EPLGb, Gc, Db or Dc), The room contains a gas/vapor release source and is protected by both positive pressure and artificial ventilation.

The rooms in this section include independent rooms, multiple rooms, a complete building or rooms inside a building. Room is set for Access for personnel, and pipes for gas in and out.

Sound enclosures and other similar enclosures designed to allow personnel access are also considered a room between. This section also specifies requirements for related safety devices and controls necessary to ensure that artificial ventilation, ventilation and positive pressure are achieved and maintained.

Rooms assembled or built on site can be built on land or at sea. This type of room is mainly installed by the end user, but can be manufactured at It is manufactured and evaluated by commercial factories, and the final pipeline connection is completed on site.

The room can be located in an explosive gas environment that requires an equipment protection level (EPL) of Gb or Gc, or in an environment that requires equipment protection The flammable dust environment (EPL) is Db, Dc.

This section does not specify methods that may be required to ensure that the air quality and temperature in the room are suitable for personnel work. Rooms protected with inert or flammable gases are outside the scope of this section.

This application is generally considered to be a special case. Some can consider the principles of GB/T 3836.5, but as a whole may need to meet other stricter engineering standards, procedures and Practice requirements.

The equipment's positive pressure enclosure in accordance with GB/T 3836.5 is not intended for personnel entry and exit and is outside the scope of this section.

See Appendix A for maintenance recommendations. In addition to the non-applicable situations described in Table 1, this section has been added and supplemented based on the general requirements of GB 3836.1.

Table 1 Relationship between this part and GB 3836.1 GB 3836.1 GB 3836.1 clause (2010 edition) (Informative) title (Normative) GB 3836.1 for this part applicability. Its clauses include equipment classification.

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Document preview — GB/T 3836.17-2019

National Standard of the People's Republic of China

ICS: 29.260.20
Classification: K 35

Issued by: State Administration for Market Regulation, China National Standardization Administration

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements for all types of rooms
4.1 Overview
4.2 Explosion-proof type and protection level
4.3 Structure
4.4 Mechanical strength
4.5 Penetration and sealing
4.6 Doors for personnel access
4.7 Entrance and exit
4.8 Pipe
4.9 Ventilation and dust cleaning
4.10 Preventing ignition in the event of system failure
5 Supply of clean air
5.1 Overview
5.2 Clean air source
5.3 Ambient and air temperature conditions
5.4 Heating, ventilation and air-conditioning equipment
6 Requirements for positive pressure rooms
6.1 Overview
6.2 Room ventilation
6.3 Minimum safety measures, safety devices and electrical separation
6.4 Positive pressure room test
7 Requirements for artificially ventilated rooms
7.1 Overview
7.2 Ventilation in artificially ventilated areas
7.3 Minimum safety measures, safety devices and electrical separation
7.4 Failure of artificial ventilation
7.5 Artificially ventilated room test
8 signs
8.1 Overview
8.2 Signs of positive pressure rooms
8.3 Signs for artificially ventilated rooms
9 Instructions
9.1 Overview
9.2 Technical documents for positive pressure rooms
9.3 Technical documents for artificially ventilated rooms
9.4 Technical documents for rooms protected by a combination of positive pressure and artificial ventilation
9.5 Makeover
Appendix A (Normative) Maintenance
Appendix C (informative) Application examples and related guidelines
References

1 Scope

This section of the Explosive Environment specifies the design, construction, assessment, testing and marking of rooms used to protect internal equipment in the following locations

Requirements.

--- Located in Zone 1 or Zone 2, or Zone 21 or Zone 22 in explosive environments (areas that normally require EPLGb, Gc, Db or Dc),

A room protected by positive pressure without a gas/vapor release source inside;

--- Located in the explosive environment of Zone 2 (the area where EPLGc is usually required), the interior does not contain gas/vapor release sources and is manually ventilated

Protected room;

--- In non-hazardous areas, rooms containing gas/vapor release sources inside, protected by artificial ventilation;

--- Located in Zone 1 or Zone 2, or Zone 21 or Zone 22 in explosive environments (areas that normally require EPLGb, Gc, Db or Dc),

The room contains a gas/vapor release source and is protected by both positive pressure and artificial ventilation.

The rooms in this section include independent rooms, multiple rooms, a complete building or rooms inside a building. Room is set for

Access for personnel, and pipes for gas in and out. Sound enclosures and other similar enclosures designed to allow personnel access are also considered a room between. This section also specifies requirements for related safety devices and controls necessary to ensure that artificial ventilation, ventilation and positive pressure are achieved and maintained.

Rooms assembled or built on site can be built on land or at sea. This type of room is mainly installed by the end user, but can be manufactured at

It is manufactured and evaluated by commercial factories, and the final pipeline connection is completed on site.

The room can be located in an explosive gas environment that requires an equipment protection level (EPL) of Gb or Gc, or in an environment that requires equipment protection

The flammable dust environment (EPL) is Db, Dc.

This section does not specify methods that may be required to ensure that the air quality and temperature in the room are suitable for personnel work.

Rooms protected with inert or flammable gases are outside the scope of this section. This application is generally considered to be a special case.

Some can consider the principles of GB/T 3836.5, but as a whole may need to meet other stricter engineering standards, procedures and

Practice requirements. The equipment's positive pressure enclosure in accordance with GB/T 3836.5 is not intended for personnel entry and exit and is outside the scope of this section.

See Appendix A for maintenance recommendations.

In addition to the non-applicable situations described in Table 1, this section has been added and supplemented based on the general requirements of GB 3836.1.

Table 1 Relationship between this part and GB 3836.1

GB 3836.1

GB 3836.1 clause (2010 edition) (Informative) title (Normative)

GB 3836.1 for this part applicability

4 Equipment classification

4.1 Class I not applicable

4.2 Applicable for Type II

4.3 Applicable for Class III

4.4 Applicable for specific explosive environment equipment

5.1 Environmental Impact

5.1.1

Ambient temperature applies

GB 3836.15 | GB/T 3836.18 | GB/T 3836.2 | GB/Z 3836.37 | GB 3836.16 | GB/T 3836.22 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 51 pages — is available in the English PDF.

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