This standard specifies the basic requirements and main operation procedures for the alloying component inspection for the metal members (including welding joint, welding material) of electrical power equipments with spectrum analysis method.
This standard is applicable to the spectrum analysis of the alloying component re-inspection and discrimination for all the metal members (including welding joint and welding material) when the electrical power equipments are manufactured, installed and overhauled as well as the re-inspection and discrimination of the alloying component for metallic materials in relevant industries.
2 Normative References
The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments (excluding amending error in the text) to, or revisions of, any of these publications do not be applied. However, the parties whose enter into agreement according to these specifications are encouraged to research whether the latest editions of these references are applied or not. For undated references, the latest edition of the normative document is applicable to this standard.
GB/T 4336 "Method for Photoelectric Emission Spectroscopic Analysis of Carbon Steel Medium and Low Alloy Steel"
GB/T 7999 "Standard Method for Direct Reading Spectrometric Analysis of Aluminum and Its Alloys"
GB/T 11170 "Method for Photoelectric Emission Spectroscopic Analysis of Stainless Steel"
GB 11533 "Standard Logarithmic Visual Acuity Charts"
GB/T 14203 "General Rule for Photoelectric Emission Spectroscopic Analysis of Iron, Steel and Alloy"
DL/T 931 "The Rule of Physico-chemical Personnel Qualification in Electric Power Industry"
JJG 768 "Verification Regulation of Emission Spectrometer"
3 Terms and Definitions
The following terms and definitions apply.
3.1
Electrical power equipment
It is the generic terms of the power generation, power transmission and power distribution equipments required during power generation process, such as boiler, steam turbine, pipeline, generator, voltage transformer, line, iron tower and fittings.
3.2
Spectral analysis
It refers to the method to inspect the elements and their contents with characteristic line spectrum emitted by the atom (or ion) or the wave length and intensity of the characteristic strip spectrum emitted by some molecule (or base group).
3.3
Spectrometer
It refers to an analytical instrument separating the optical radiation with dispersion element and optical system according to the wave length and receiving different wave length radiation with proper receiver. It is divided into prism spectrograph, grating spectrograph and interferometer spectrometer according to the different dispersion elements; and spectroscope, spectrograph and direct reading spectrometer according to different spectrum line manners.
