Standards

GB/Z 28818-2012 Abolished

GB/Z 28818-2012 Selection guide for polymeric materials for outdoor use under HV stress

This guidance technical document specifies the important material properties of outdoor polymer insulation materials, and lists the standard test methods with minimum requirements when the materials are applicable. If there are no applicable standard test methods, refer to the test methods summarized in this guidance technical document.
This guidance technical document is applicable to outdoor high-voltage polymer insulation materials with a system voltage higher than 1,000 V AC, and also includes applications where the shell is an integral part of the equipment, such as in lightning arresters and cable terminals. The scope of this guidance technical document is limited to these materials. The performance of insulators depends on several factors, such as the type of material, design, and environmental conditions. Therefore, when selecting materials, it is necessary to meet the following requirements, but this does not guarantee that the materials will perform satisfactorily when used for outdoor insulation.

Publish Date: 2012-11-05

GB/Z 28820.1-2012 Abolished

GB/Z 28820.1-2012 Long-term radiation ageing in polymers—Part 1:Techniques for monitoring diffusion-limited oxidation

When oxygen is present, polymers age in various environments including temperature, radiation, or ultraviolet light, subject to diffusion-limited oxidation, resulting in non-homogeneous aging. These effects make it difficult to understand the aging process and infer accelerated long-term exposure conditions. This section reviews experimental techniques for quantitatively monitoring these effects and provides theoretical equations for assessing their significance.

Publish Date: 2012-11-05

GB/Z 28820.2-2012 Abolished

GB/Z 28820.2-2012 Long-term radiation ageing in polymers—Part 2:Procedures for predicting ageing at low dose rates

The content of this part of GB/Z 28820 is applicable to the prediction of aging processes under low dose rates.
This part provides three methods for extrapolating low dose rate data under general usage conditions based on high dose rate test data. These methods all assume that homogeneous oxidation has been achieved under the test conditions. This part is applicable to various elastomers, thermoplastics, and some thermosetting materials. The various methods themselves are also constantly being improved and refined. In order to be able to predict low dose rate conditions, a considerable amount of test data is required. The exponential extrapolation method is mainly used for isothermal data, while the superposition method can utilize data obtained under various temperature conditions.

Publish Date: 2012-11-05

GB/Z 28820.3-2012 Abolished

GB/Z 28820.3-2012 Long-term radiation ageing in polymers—Part 3:Procedures for in-service monitoring of low-voltage cable materials

This part of GB/Z 28820 summarizes the current main cable monitoring technologies. These technologies are mainly aimed at monitoring the degradation of low-voltage cables. The advantages, limitations, and development status of each method will be mentioned in the relevant sections.

Publish Date: 2012-11-05

GB/Z 28828-2012 Abolished

GB/Z 28828-2012 Information security technology—Guideline for personal information protection within information system for public and commercial services

This guidance technical document specifies the process of handling personal information entirely or partially through information systems, and provides guidance for the protection of personal information at different stages of personal information processing in information systems.
This guidance technical document is applicable to guiding all types of organizations and institutions, except for government agencies and other institutions exercising public management duties, such as service organizations in the fields of telecommunications, finance, and healthcare, to carry out personal information protection work in information systems.

Publish Date: 2012-11-05

GB/T 28806-2012 Abolished

GB/T 28806-2012 Railway applications—Rolling stock—Testing of rolling stock on completion of construction and before entry into service

This standard specifies the general guidelines for proving through testing that new rail transit vehicles comply with standards or other normative documents.
This standard is partially or fully applicable to all rail transit locomotives and vehicles, except for specialized locomotives and vehicles, such as tracklayers, ballast cleaning machines, and staff commuter vehicles. For specialized locomotives and vehicles, the scope of application of this standard can be specified in detail in the contract.

Publish Date: 2012-11-05

GB/T 28659-2012 Abolished

GB/T 28659-2012 Standard of cultivation technique on shawo radish under protective measures

This standard specifies the production environment, fertilization and irrigation management, and pest and disease control techniques for protected-area sand-pit radishes.
This standard is applicable to the production of protected-area sand-pit radishes in greenhouses, greenhouses, and other protected areas.

Publish Date: 2012-09-03

GB/T 28687-2012 Abolished

GB/T 28687-2012 Numerical control die casting machines

This standard specifies the technical requirements, accuracy, test methods, inspection rules, and marking, packaging, storage, and transportation of CNC die-casting machines.
This standard applies to CNC horizontal cold chamber die-casting machines (hereinafter referred to as CNC die-casting machines).

Publish Date: 2012-09-03

GB/T 17157-2012 Abolished

GB/T 17157-2012 Specifications for aerial photogrammetric analytical mapping of 1∶25 000 1∶50 000 1∶100 000 topographic maps

This standard specifies the basic requirements, specifications, and accuracy for mapping operations using aerial photogrammetry to produce 1:25,000, 1:50,000, and 1:100,000 topographic maps.
This standard is applicable to mapping production operations using aerial photogrammetry to create 1:25,000, 1:50,000, and 1:100,000 topographic maps.

Publish Date: 2012-06-29

GB/Z 28586-2012 Abolished

GB/Z 28586-2012 Geographic information—Web-based data dissemination specification

This guidance technical document describes the basic business processes and functions of geographic information data distribution, proposes the basic requirements for online geographic information data distribution, and provides a reference function for data distribution service systems.
This guidance technical document is applicable to the design, development, and application of geographic information data distribution systems.

Publish Date: 2012-06-29

GB/T 28578-2012 Abolished

GB/T 28578-2012 Publication logistics—Specification of interface operation

This standard specifies the structure of the publication logistics interface and the structured naming of interface operations, and defines the classification, names, and content of publication logistics interface operations.
This standard is applicable to the connection of publication logistics processes among different participants engaged in publication and distribution activities.

Publish Date: 2012-06-29

GB/T 28579-2012 Abolished

GB/T 28579-2012 Publication logistics—Specification of return operation

This standard specifies the types of returns in publication logistics, the basic requirements for return operations, and the marking of return information.
This standard applies to return operations and management of publications in publishing and related enterprises.

Publish Date: 2012-06-29