T/GZQXXH 0002-2023 Active Group standards

T/GZQXXH 0002-2023 Technical specifications for classification of lightning susceptibility level

Publish Date: 2023-08-30 Implement Date: 2023-09-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/GZQXXH 0002-2023

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Meteorology

ICS Name: Geology, meteorology, and hydrology

Publish Date: 2023-08-30

Implement Date: 2023-09-01

Pages: 8 pages

Scope

Main Technical Content: 1. Scope This document specifies the terminology, general provisions, and zoning methods for lightning-prone areas. It is applicable to lightning-prone area zoning and lightning protection design and can be used for reference. 2. Normative Reference Documents The content of the following documents is an integral part of this document through normative references. Among them, the referenced documents with a specified date apply only to the version corresponding to that date; for unspecified date documents, the latest version (including all amendments) applies to this document. - GB 50057-2010: Code for Lightning Protection Design of Buildings - GB/T 19663-2022: Terminology for Lightning Protection of Information Systems - GB/T 21714.2-2015: Lightning Protection – Part 2: Risk Management - GB/T 37047-2018: General Principles for Ground Flash Density Based on the Lightning Localization System (LLS) 3. Terminology and Definitions The following terms and definitions apply to this document. 3.1 Lightning Susceptibility The degree of lightning activity in a region is analyzed using lightning observation methods. 3.2 Ground Flash Density The average number of ground flashes per unit area and unit time. Note: The unit is flashes per square kilometer per year [flash/(km2?a)]. [Source: GB/T 37047-2018, Section 3.1.7] 3.3 Thunderstorm Day A day with more than one thunderclap is considered a thunderstorm day. [Source: GB/T 19663-2022, Section 3.25] 3.4 Annual Average Density of Lightning Strikes The annual average number of lightning strikes per unit area. Ng = 0.1Td. [Unit: flashes per square kilometer per year (flash/(km2?a)] 4. General Provisions 4.1 Lightning monitoring data should be complete annual information provided by meteorological authorities. 4.2 Lightning monitoring data should preferably be compiled over a period of ten years or more. 4.3 GIS maps of the latest version should be used for lig