GB/T 3836.25-2019Explosive atmospheres -- Part 25: Requirements for process sealing between flammable process fluids and electrical systems (English PDF)
爆炸性环境 第25部分：可燃性工艺流体与电气系统之间的工艺密封要求
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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 3836.25-2019 is the English-translated version of 爆炸性环境 第25部分：可燃性工艺流体与电气系统之间的工艺密封要求.
GB/T 3836.25-2019 is the Chinese standard "Explosive atmospheres -- Part 25: Requirements for process sealing between flammable process fluids and electrical systems".
Its scope clause reads: If the process seal between the flammable process fluid and the electrical system fails, the process fluid will directly enter the field wiring system.
This section of the Explosive Environment sets specific requirements for the process seal between flammable process fluids and electrical systems. This section specifies the assessment, manufacturing, and testing of single-process seal equipment, dual-process seal equipment, and additional secondary process seals.
Claim. The requirements of this section do not apply to conduit sealing devices, cable entry devices and other involved in GB/T 3836 series or other standards Wiring sealing method.
This section does not cover basic electrical safety and explosion-proof performance requirements, but may also apply to these devices. This section does not cover leaks. Environmental impact. Its clauses include terms and definitions.
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Document preview — GB/T 3836.25-2019
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
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 General requirements
- 5 Type verification and test
- 6 signs
- 7 Operating Instructions
- Appendix A (informative) Pretreatment and test flow chart
- References
1 Scope
If the process seal between the flammable process fluid and the electrical system fails, the process fluid will directly enter the field wiring system.
This section of the Explosive Environment sets specific requirements for the process seal between flammable process fluids and electrical systems.
This section specifies the assessment, manufacturing, and testing of single-process seal equipment, dual-process seal equipment, and additional secondary process seals.
Claim.
The requirements of this section do not apply to conduit sealing devices, cable entry devices and other involved in GB/T 3836 series or other standards
Wiring sealing method.
This section does not cover basic electrical safety and explosion-proof performance requirements, but may also apply to these devices. This section does not cover leaks.
Environmental impact.
2 Normative references
The following documents are essential for the application of this document. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB 3836.1 Explosive atmospheres Part 1. General requirements for equipment (GB 3836.1-2010, IEC 60079-0..2007,
MOD)
GB/T 3836.5 Explosive atmospheres Part 5. Equipment protected by positive pressure housing "p" (GB/T 3836.5-2017, (IEC 60079-2..2007, MOD)
3 terms and definitions
The following terms and definitions apply to this document.
Note. See Figure 1 for illustrations of different process sealing elements.
Figure 1 Equipment process sealing element
GB/T 3836.21 | GB/T 3836.29 | GB/T 3836.28 | GB/T 3836.18 | 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 — 24 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 3836.5Explosive atmospheres - Part 5: Equipment protection by pressurized enclosure 'p'
- GB/T 3836.5-2017Explosive atmospheres - Part 5: Equipment protection by pressurized enclosure 'p'
GB 3836.1 · GB 3836.1-2010 · IEC 60079
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Related Standards
GB/T 3836.5-2021 — Explosive atmospheres - Part 5: Equipment protection by pressurized enclosure 'p'
GB/T 3836.26-2019 — Explosive atmospheres -- Part 26: Electrostatic hazards -- Guidance
GB/T 3836.24-2017 — Explosive atmospheres -- Part 24: Equipment protection by special protection 's'
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