GB/T 34661-2017 in English
VALIDExplosion protected technique requirements for vapour recovery system
- Issued on:2017-12-29
- Implemented on:2018-07-01
- File Format:PDF
- Delivery:Via email within 5 business days
$301.00
《GB/T 34661-2017油气回收系统防爆技术要求》由TC9（全国防爆电气设备标准化技术委员会）归口，主管部门为中国电器工业协会。
Introduction
1. Standard Overview
GB/T 34661-2017 "Technical Requirements for Explosion-Proof Oil and Gas Recovery Systems" mainly stipulates the classification of hazardous locations, general technical measures, test methods and marking requirements for oil and gas recovery systems used in gas stations, tank trucks and oil storage depots, and is applicable to environments that handle Class IIA fuel gas or vapor.
2. Classification of hazardous locations
| Type of location | Scope of application | Level of hazardous area |
|---|---|---|
| Gas station | Area surrounding the gas dispenser and oil and gas recovery device | Zone 1 or Zone 2 |
| Oil tanker | Space inside the protection box at the outlet of the oil and gas circuits | Zone 1 |
| Oil storage depot | Area surrounding the oil and gas collection system and processing device | Zone 0, Zone 1 or Zone 2 |
3. General technical measures
Equipment explosion-proof requirements
All equipment used in hazardous locations must comply with the requirements of GB 3836.1-2010 and GB 25286.1-2010, and adapt to Class IIA, Group T3 gas or steam environments.
Oil and gas compressors
Explosion-proof temperature monitoring sensors must be installed, and the actual temperature after shutdown must not exceed the allowable value. The outlet pipeline design should avoid high-speed airflow causing local high temperatures.
4. Implementation suggestions
- Equipment selection: Select the appropriate explosion-proof type (such as flameproof enclosure, intrinsically safe type, etc.) according to the level of the hazardous area.
- Installation and maintenance: Ensure the anti-permeability performance of oil and gas pipelines and hoses, and regularly check the status of flame arresters and seals.
- Safety management: Establish a hazardous area identification system, strengthen operator training, and ensure effective grounding and equipotential connection.
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