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LST1232-2023: Grain and oil storage--Code of practice of simple facilities aeration for grain storage
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| LS/T 1232-2023 | English | 199 |
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Grain and oil storage--Code of practice of simple facilities aeration for grain storage
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LS/T 1232-2023
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Basic data | Standard ID | LS/T 1232-2023 (LS/T1232-2023) | | Description (Translated English) | Grain and oil storage--Code of practice of simple facilities aeration for grain storage | | Sector / Industry | Food & Beverage Industry Standard (Recommended) | | Classification of Chinese Standard | B20 | | Classification of International Standard | 65.040.20 | | Word Count Estimation | 8,890 | | Date of Issue | 2023-03-20 | | Date of Implementation | 2023-09-20 | | Issuing agency(ies) | National Grain and Material Reserves Administration | LST1232-2023: Grain and oil storage--Code of practice of simple facilities aeration for grain storage
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 65:040:20
CCSB20
People's Republic of China Grain Industry Standards
Grain and oil storage simple warehouse storage grain ventilation technical regulations
forgrain storage
Released on 2023-03-20
2023-09-20 Implementation
Released by the State Administration of Grain and Material Reserves
Published by China Standard Press
foreword
This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents"
drafting:
Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents:
This document is proposed by the State Administration of Grain and Material Reserves:
This document is under the jurisdiction of the National Grain and Oil Standardization Technical Committee (SAC/TC270):
This document was drafted by: National Grain and Material Reserve Bureau Scientific Research Institute, China Grain Reserve Management Group Co:, Ltd:, China Grain Reserve
Management Group Co:, Ltd: Jilin Branch, Sinograin Chengdu Storage Research Institute Co:, Ltd:, National Grain and Material Reserve Bureau Standard Quality Center
Center, Central Grain Reserve Tongliao Dongjiao Direct Warehouse Co:, Ltd:, Central Grain Reserve Fushun Direct Warehouse Co:, Ltd:
The main drafters of this document: Tang Fang, Shi Tianyu, Wang Zhengyou, Li Zhimin, Qi Zhihui, Guo Yuting, Ji Xiaojun, Yang Hongzhi, Zhang Haiyang,
Li Chunyuan, Xu Shengwei, Tian Lin, Li Qianqian:
Grain and oil storage simple warehouse storage grain ventilation technical regulations
1 Scope
This document stipulates the basic requirements of ventilation technology for grain storage in simple warehouses, the classification of ventilation technology, the operation and management of ventilation technology, etc:
This document is applicable to the ventilation operation in the simple storage of grain storage:
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references
For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
this document:
GB 4806:6 National Food Safety Standard Food Contact Plastic Resins
LS/T 1202 Technical Regulations for Mechanical Ventilation of Grain Storage
LS/T 1217 Simple Grain Storage Technical Regulations
SN/T 1123 Tent fumigation treatment operating procedures
3 Terms and Definitions
The terms and definitions defined in LS/T 1202 and LS/T 1217 apply to this document:
4 Basic requirements
4:1 Sealing requirements before ventilation
4:1:1 Simple warehouse: a grain pile with a wrapping structure, which can be sealed by hanging tarpaulin or airtight film material outside the sack;
For enclosure structures such as slabs, joints shall be sealed:
4:1:2 Simple storage: it can be sealed by hanging tarpaulin or airtight film material inside the storage body:
4:1:3 The selection of sealing materials shall be carried out in accordance with SN/T 1123, and shall comply with the provisions of GB 4806:6:
4:2 Ventilation system air network layout
4:2:1 The width of the main air duct of the above-ground cage of the ventilation system should be greater than or equal to 500mm, and the height should be greater than or equal to 350mm:
4:2:2 The width of the above-ground cage air duct of the ventilation system should be greater than or equal to 400mm, and the height should be greater than or equal to 260mm:
500mm, height 350mm standard branch air duct:
4:2:3 The ventilation system of the cage above the ground of the simple warehouse should be arranged with Gui-shaped air ducts, and each group of air ducts should adopt more than 4 parallel branch air ducts:
The distance between the branch air ducts shall not be greater than 4m, the main air duct shall not be opened throughout the whole process, and the length of a single branch air duct shall not exceed 12m: The branch air duct is parallel to the bottom hemp
Bags, the distance from the side branch air ducts to the inner sacks shall not be greater than 0:3m:
4:2:4 When the ventilation system of the cage above the ground of the simple warehouse is arranged with U-shaped air passages, it is advisable to adopt three passages or four passages for one machine, and the length of the branch air passages varies:
It should exceed 25m, the distance between parallel branch air ducts should not exceed 5m, and when the grain stacking span is greater than 27m, double-sided ventilation should be used: Branch end
The distance to the bottom sack should not be greater than 0:5m: The side branch air duct is no more than 0:3m away from the inner sack:
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