GB/T 34304-2017 English PDF

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GB/T 34304-2017: Warning grade of hail suppression operation
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 34304-2017	119	Add to Cart	3 days	Warning grade of hail suppression operation	Valid

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Basic data

Standard ID: GB/T 34304-2017 (GB/T34304-2017)
Description (Translated English): Warning grade of hail suppression operation
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A47
Classification of International Standard: 07.060
Word Count Estimation: 6,647
Date of Issue: 2017-09-07
Date of Implementation: 2018-04-01
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 34304-2017: Warning grade of hail suppression operation

---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.
Warning grade of hail suppression operation ICS 07.060 A47 National Standards of People's Republic of China Artificial hail homework warning level 2017-09-07 Posted 2018-04-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed by China Meteorological Administration. This standard by the National Artificial Weather Standardization Technical Committee (SAC/TC538) centralized. This standard was drafted unit. Shaanxi Province, artificial weather office. The main drafters of this standard. Li Yan, Liang Gu, Qiao Xu Xia, Yue governance country, Tian Xian, Liang Yi, Yang Guangtian, Yao Xuanping, Chen Li, Song Jiayao. Artificial hail homework warning level

1 Scope

This standard specifies the level of warning of artificial hail operation. This standard applies to artificial hail operation.

2 Terms and definitions

The following terms and definitions apply to this document. 2.1 Operation warning area operationwarningarea Depending on the weather conditions, the geographical scope of the hail suppression operation may be implemented. 2.2 Hailing operation warning warningofhailsuppressionoperation Depending on the weather conditions in the work alert area, signals are issued that hail operations may be implemented.

3 warning level

3.1 classification principle It should be graded according to the trend of weather changes in the work warning area. 3.2 classification Hailing operation warning level should be in accordance with the three levels from low to high, followed by three warning, two warning and a warning. 3.3 classification conditions 3.3.1 three warnings The work warning area should expect strong convective weather in the next 12 hours. 3.3.2 two warnings Job warning area should meet one of the following conditions. --- Expected to be hail weather in the next 6h; --- Convective clouds in the range of 60km around the anti-hail operation point, and at the same time meet the following conditions. ● Radar echo strength greater than or equal to 20dBz; ● The strong center height of the radar echo is greater than or equal to 0 ° C. 3.3.3 a warning Job warning area should meet one of the following conditions. --- Expected to occur within the next 2h hail weather; ......

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