GB/T 19608.2-2022 English PDF (GBT19608.2-2022)

This document specifies the environmental parameters and severity classification of the product under the dry heat desert environment. This document applies to products stored, transported, handled and used in dry heat desert conditions. The items and levels used can be selected according to the environmental impact and degree of the product.

GB/T 19608.2-2022
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 19.040
CCS A 21
Replacing GB/T 19608.2-2004
Classification of special environmental condition - Part 2:
Dry heat-desert
ISSUED ON: JULY 11, 2022
IMPLEMENTED ON: FEBRUARY 01, 2023
Issued by: State Administration for Market Regulation;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword ... 3
Introduction ... 5
1 Scope ... 7
2 Normative references ... 7
3 Terms and definitions ... 7
4 Overview of environmental conditions ... 7
5 Severity level for various environmental conditions ... 8
5.1 Climatic environmental conditions (K)... 8
5.2 Special climatic environmental conditions (Z) ... 9
5.3 Chemically active substance conditions (C) ... 10
5.4 Mechanically active substance conditions (S) ... 12
5.5 Mechanical environmental conditions (M) ... 14
5.6 Biological environmental conditions (B) ... 19
5.7 Wind sand landform (D) ... 20
Annex A (informative) Other desert environments ... 22
Bibliography ... 24
Classification of special environmental condition - Part 2:
Dry heat-desert
1 Scope
This document specifies the environmental parameters and severity classification of the product under the dry heat desert environment.
This document applies to products stored, transported, handled and used in dry heat desert conditions. The items and levels used can be selected according to the environmental impact and degree of the product.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 4798.10, Environmental conditions existing in the application of electric and electronic products - Guidance
GB/T 20625, Special environmental condition - Terminology
3 Terms and definitions
For the purposes of this document, the terms and definitions defined in GB/T 20625 apply.
4 Overview of environmental conditions
The dry heat desert environmental conditions are composed of climatic environmental conditions (K), special climatic environmental conditions (Z), biological environmental conditions (B), chemically active substances (C), mechanically active substances (S), mechanical environmental conditions (M), wind sand landform (D) are described by levels respectively.
This grading allows for possible combinations of various environmental conditions. These environmental conditions have an impact on products stored, transported and used anywhere. It can truly reflect the environmental conditions caused by the outdoor climate during the process. For some environmental parameters, it is difficult to quantify its severity level.
According to GB/T 4798.10, the environmental condition level is characterized by the following identifications:
- The first digit identifies the application condition (1 means storage; 2 means transportation and loading-unloading; 3 means fixed use in places with climate protection; 4 means fixed use in places without climate protection);
- Letters: Climatic environmental conditions (K), special climatic environmental conditions (Z), biological environmental conditions (B), chemically active substances (C), mechanically active substances (S), mechanical environmental conditions (M), wind sand landform (D);
- Another digit identifies the severity. Generally, the larger the value, the more severe the condition. A level can be further divided into H (high) and L (low). For example, temperatures may be very low, but high ambient conditions will not occur. Example: Level 2K3, in which: 2 means transportation and loading-unloading; K means climatic environmental conditions; 3 means severity level.
5 Severity level for various environmental conditions
5.1 Climatic environmental conditions (K)
Choose the right level. Attention shall be paid to whether the climatic environmental conditions of places with climate protection are affected by the outdoor environment (places without climate protection), especially temperature and solar radiation. The severity level of climatic environmental conditions is shown in Table 1. See Annex A for other desert environmental conditions.
1K20: Suitable for indoor storage in dry heat desert environmental conditions, without temperature and humidity control.
1K21: Suitable for outdoor sheltered storage in dry heat desert conditions. 1K22: Suitable for outdoor storage without shelter in dry heat desert conditions. 2K20: Suitable for climate-protected transport and loading-unloading in dry heat desert environmental conditions, without temperature and humidity control in unventilated boxes.
2K21: Suitable for transport and loading-unloading without weather protection in dry 2C3: Suitable for transportation and loading-unloading in areas close to industrial chemical pollution sources.
3C1: Suitable for indoor stationary use in rural and urban areas with low industrial activity and moderate traffic. Heating in dense urban areas in winter can lead to increased pollution.
3C2: Suitable for indoor stationary use with general pollution levels, where industrial production activities are distributed throughout the area, or in cities with heavy traffic. 3C3: Suitable for indoor stationary use near industrial sources of chemical emissions. 3C4: Suitable for indoor fixed use in industrial production plants, where high concentrations of chemical pollutants may occur.
4C1: Suitable for outdoor fixed use in rural and urban areas with a small amount of industrial pollution and low traffic.
4C2: Suitable for outdoor fixed use in cities with industrial pollution and heavy traffic. 4C3: Suitable for outdoor fixed use close to chemical pollution sources. 4C4: Suitable for outdoor fixed use in industrial processing plants. Chemical pollutant emissions are in high concentrations.
NOTE: The chemically active substances in the dry heat desert environment mainly exist in the corrosive gases discharged from industrial facilities such as oil and gas fields and the heating systems of surrounding towns and villages. Under certain humidity conditions (for example, at and around the mud solids control system, splash water and water spray conditions in the shed, the relative humidity may reach more than 70%), these gases will accelerate metal corrosion. Therefore, the chemically active substance conditions are suitable for the dry heat desert environment. 2S2: Suitable for transport and loading-unloading where limited (anti-sand) measures have been taken to minimize the presence of sand and dust, such as enclosed transport and loading-unloading.
2S3: Suitable for unenclosed transport and loading-unloading near sources of sand and dust, where no special precautions are taken to reduce the presence of sand and dust. 2S4: Suitable for transportation and loading-unloading in sand and dust areas. 3S1: Suitable for closed indoor fixed use where dust-proof measures have been taken to reduce the dust content to a minimum.
3S2: Suitable for closed indoor fixed use without special protective measures to minimize the content of dust and sand, but the place is not located near the source of dust or sand.
3S3: Suitable for closed indoor fixed use close to sand and dust sources, including places where sand or dust content is minimized in urban areas.
4S1: Suitable for outdoor fixed use where dust-proof measures have been taken to minimize the dust content.
4S2: Suitable for outdoor fixed use without special protective measures to minimize the content of dust and sand, but the place is not located near the source of dust or sand. 4S3: Suitable for places close to the source of sand and dust, including fixed outdoor use in urban areas without special protective measures to minimize the content of dust and sand. It is also suitable for outdoor stationary use not affected by natural dust storms or important industrial activities.
4S4: Suitable for outdoor fixed use with windy sand and dust in the air caused by natural conditions or industrial activities.
Annex A
(informative)
Other desert environments
Desert environments are widely distributed in the world. The dry heat desert environment in northwestern China belongs to the high latitude desert environment. The tropical desert environment distributed in the Arabian Peninsula of West Asia and the Sahara region of Africa belongs to the low-latitude desert environment. Its climatic and environmental conditions are different from the dry heat desert environment. See Table A.1 for the severity level of climatic environmental conditions in the dry heat desert environment.
1K50: Suitable for indoor storage in tropical desert environmental conditions without temperature and humidity control.
1K51: Suitable for outdoor sheltered storage in tropical desert environmental conditions. 1K52: Suitable for outdoor unshielded storage in tropical desert environmental conditions.
2K50: Suitable for weather-protected transport and loading-unloading in tropical desert environmental conditions, without temperature and humidity control in unventilated enclosures.
2K51: Suitable for transport and loading-unloading without weather protection in tropical desert environmental conditions.
3K51: Suitable for stationary use with climate protection in tropical desert environmental conditions, without temperature and humidity control.
4K50: Suitable for fixed use outdoors with shelter in tropical desert conditions. 4K51: Suitable for fixed use outdoors without shelter in tropical desert environmental conditions.