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GB/T 40749-2021 English PDF

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GB/T 40749-2021: Technical specification for design of ocean gravity cage
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Basic data

Standard ID GB/T 40749-2021 (GB/T40749-2021)
Description (Translated English) Technical specification for design of ocean gravity cage
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard B56
Word Count Estimation 15,136
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 40749-2021: Technical specification for design of ocean gravity cage

---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.
Technical specification for design of ocean gravity cage ICS 65.150 B56 National Standards of People's Republic of China Technical specification for seawater gravity cage design Released on 2021-10-11 2022-05-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. Please note that certain contents of this document may involve patents. Publication of this document The agency is not responsible for identifying these patents. This standard was proposed by the Ministry of Agriculture and Rural Affairs of the People's Republic of China. This standard is under the jurisdiction of the National Fisheries Standardization Technical Committee (SAC/TC156). Drafting organizations of this standard. Dalian University of Technology, East China Sea Fisheries Research Institute of Chinese Academy of Fishery Sciences, Dalian Tianzheng Industrial Co., Ltd., Ocean University of China, Yellow Sea Fisheries Research Institute of Chinese Academy of Fishery Sciences, Zhejiang Ocean University. The main drafters of this standard. Zhao Yunpeng, Shi Jiangao, Huang Liuyi, Liu Shengcong, Cui Yong, Feng Dejun, Bi Chunwei. Technical specification for seawater gravity cage design

1 Scope

This standard specifies the terms and definitions of seawater gravity cages, hydrological environment investigation, general design rules, floating rack system design, net clothing system design Design requirements for the design and mooring system. This standard applies to the structure of seawater gravity cages made of high-density polyethylene pipes or galvanized steel pipes as a frame and floating on the water surface Design, suitable for polyethylene pipe frame cages with sea depth less than 20m and circumference less than 120m or galvanized steel pipes with circumference less than 60m Frame cage. The design of other sea cages of the same type can be implemented by reference.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document. GB/T 549 Electric Welded Anchor Chain GB/T 12763.2-2007 Ocean Survey Specification Part 2.Ocean Hydrological Observation GB/T 12763.3-2007 Marine Survey Specification Part 3.Marine Meteorological Observation GB/T 12763.8-2007 Marine Survey Specification Part 8.Marine Geology and Geophysical Survey GB/T 17501-2017 Ocean Engineering Topographic Survey Specification GB/T 18673 Woven Mesh for Fishing GB/T 18674 General technical conditions for fishing ropes GB 50009 Building structure load code GB 50153 Unified Standard for Reliability Design of Engineering Structures JTS145-2015 Hydrological Code for Ports and Waterways SC/T 4005 Main fishing gear making mesh stitching and assembly SC/T 4025-2016 High-density polyethylene pipe for aquaculture cage floating frame SC/T 4067-2017 General technical requirements for floating metal frame cages SC/T 5022 Ultra High Molecular Weight Polyethylene Mesh Warp Knitted Type

3 Terms and definitions

The following terms and definitions defined in GB 50009 and GB 50153 apply to this document. For ease of use, the following is repeated Some terms and definitions of GB 50009 and GB 50153. 3.1 Nettingsystem It is composed of a net piece, a net wire, a steel cable and a sinker, and is used to maintain a gravity-type net cage facility structure for the breeding space. 3.2 Floating system A floating frame structure composed of a frame or a frame plus a pontoon, which is used to maintain the shape of the cage and suspend the cage in the water.

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