GB/T 37491-2019 in English
VALIDGuideline of low oxygen control grain storage insect
- Issued on:2019-06-04
- Implemented on:2020-01-01
- File Format:PDF
- Delivery:Within 1 day
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| Standard No: | GB/T 37491-2019 |
| Document status: | VALID |
| Title in English: | Guideline of low oxygen control grain storage insect |
| Title in Chinese: | 低氧防治储粮害虫一般规则 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Within 1 day |
| Issued on: | 2019-06-04 |
| Implemented on: | 2020-01-01 |
| ICS Classification: | 65.020.01-Farming and forestry in general |
| Chinese Classification: | B02-Economic management |
| Professional Classification: | GB-National Standard |
| Related Keywords: | low oxygen control grain storage
grain storage safety grain storage control dimensions airtightness requirements hypoxia control |
| Related Topics: | China grain storage
nematode oxygen Water body oxygen + general + pest Xu Chuliang East grain storage / grain one two GBT37491 GB/T 37491-2019 |
《GB/T 37491-2019低氧防治储粮害虫一般规则》由TC270（全国粮油标准化技术委员会）归口，TC270SC3（全国粮油标准化技术委员会粮食储藏及流通分会）执行，主管部门为国家粮食和物资储备局。
Introduction
Interpretation of the National Standard of the People's Republic of China GB/T 37491—2019
I. Background and significance of the formulation of the standard
GB/T 37491—2019 "General Rules for Control of Stored Grain Pests by Hypoxia" is an important technical standard in the field of grain storage and pest control. The standard is formulated based on modern grain storage technologies and pest control needs, and aims to ensure grain storage safety through scientific hypoxia control methods.
2. Principles and technical requirements for hypoxia prevention and control
| Dimensions | Airtightness requirements | Equipment requirements | Safety requirements |
|---|---|---|---|
| Air conditioning for the whole warehouse of flat warehouse | Airtightness complies with GB/T 25229, and the half-life is not less than 300 seconds | Nitrogen making equipment complies with JB/T 6427 | Safety sign setting complies with GB 2894 |
| Air conditioning for the whole warehouse of shallow round warehouse | Airtightness meets the requirements, and the half-life is not less than 240 seconds | Oxygen alarm complies with GB12358 | Operators need professional training |
III. Implementation suggestions for hypoxia control
According to the standard requirements, the implementation of hypoxia control of stored grain pests requires:
- Ensure that the airtightness of the granary meets the standard requirements
- Equipped with complete gas detection and alarm equipment
- Operators need to undergo professional training and hold relevant certificates
- Strictly follow the hypoxia concentration and maintenance time
IV. Evaluation standards for control effects
According to LS/T 1201, the effect of hypoxia control is evaluated by the following indicators:
- Pest mortality rate:Above 95%
- Stored grain quality:No obvious deterioration or germination
- Environmental impact: Complies with safety standards, no secondary pollution
V. Standard comparison and technology evolution analysis
Compared with the old version of the standard, GB/T 37491-2019 has been optimized in the following aspects:
- Airtightness requirements: More stringent to ensure the stability of the low-oxygen environment
- Equipment configuration: Added intelligent monitoring and alarm functions
- Safety protection: Detailed safety regulations for operators
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