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Making method for simulated hole defects of nuclear safety three-level HDPE pipeline

A nuclear safety, simulating hole technology, applied in the direction of material analysis, measuring device, instrument, etc. using sonic/ultrasonic/infrasonic waves, can solve the problem of uncertainty in size and position, and achieve quality assurance, high detection accuracy, and high safety. Effect

Active Publication Date: 2018-12-28
GUANGDONG NUCLEAR POWER JOINT VENTURE +3
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Problems solved by technology

[0008] The purpose of the present invention is to provide a preparation method for simulating hole defects in HDPE pipes with nuclear safety level 3, aiming to solve the technical problem in the prior art that the size and position of hole defects are uncertain when HDPE pipes are welded

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  • Making method for simulated hole defects of nuclear safety three-level HDPE pipeline
  • Making method for simulated hole defects of nuclear safety three-level HDPE pipeline
  • Making method for simulated hole defects of nuclear safety three-level HDPE pipeline

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Embodiment Construction

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0035] In describing the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or element...

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Abstract

The invention relates to the technical field of detection and evaluation authentication, and provides a making method for simulated hole defects of a nuclear safety three-level HDPE pipeline. The method comprises the steps of S1, selecting a test pipeline, and acquiring a backfilling amount L at a pipeline defect after the test pipeline is welded; S2, selecting a simulated pipeline, and marking out a plurality of positions used for making the simulated hole defects on the simulated pipeline; S3, drilling the marked positions to obtain simulated holes, wherein the depth of each simulated hole is larger than the backfilling amount L; and S4, mutually welding one ends, with the simulated holes, of two simulated pipelines, or welding one end, with the simulated holes, of the simulated pipelinewith a normal pipeline to form a simulated joint with the hole defects. When an ultrasonic nondestructive detection method is adopted, the sizes and positions of the hole defects in the simulated joint can be accurately detected out, so that the detection precision of the detection method is high; and therefore, the hole defects in the pipeline joint in construction can be accurately detected out, and the construction of the HDPE pipeline has the advantages of quality guarantee and high safety.

Description

technical field [0001] The invention relates to the technical field of detection, evaluation and certification, and in particular provides a preparation method for simulating hole defects in a nuclear safety level 3 HDPE pipeline. Background technique [0002] At present, before ultrasonic non-destructive testing of metal materials, standard test blocks are generally used to calibrate the detection accuracy. There are several through holes of different specifications drilled on the standard test block, and the positions of the through holes on the standard test block are known. However, for HDPE (High Density Polyethylene, high-density polyethylene) materials, conventional ultrasonic nondestructive testing methods are not applicable to them, and there is no corresponding HDPE standard test block. [0003] When laying HDPE pipes, the welding method is mainly used for connection. Affected by complex factors such as pressure, temperature, time, wind speed, and air humidity, tin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/30
CPCG01N29/30
Inventor 樊敏江梁振新魏作友张兴辉何军山冯建
Owner GUANGDONG NUCLEAR POWER JOINT VENTURE
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