Heavy water reactor spent fuel basket welding center column butt joint welding 1#-1 comparison test block

Abstract

The invention belongs to the technical field of spent fuel conveying of nuclear power plants, and in particular relates to a heavy water reactor spent fuel basket welding center column butt joint welding 1#-1 comparison test block. According to the comparison test block, welding quality of the fuel basket can be ensured, safety and reliability in hoisting of the fuel basket can be guaranteed, andthe risk of falling during hoisting due to the problem that welding quality of the central column is defective is effectively avoided. The comparison test block is characterized in that the comparisontest block is of a cuboid shape wholly; a first detection hole and a second detection hole are sequentially formed in the center line of the front end surface of the test block from bottom to top; athird detection hole and a fourth detection hole are sequentially formed in the rear end surface of the test block along the oblique direction from bottom to top; a fifth detection hole, a sixth detection hole and a seventh detection hole are sequentially formed in the right portion of the lower end surface of the test block from back to front; and the detection holes are used for simulating defects existing in weld joints. According to the comparison test block, the welding quality of the center column of the fuel basket is ensured.

Description

technical field [0001] The invention belongs to the technical field of spent fuel transmission in nuclear power plants, and in particular relates to a 1#-1 comparison test block for welding a center column butt joint of a heavy water reactor spent fuel basket. Background technique [0002] Temporary dry storage of spent fuel is a new project of Qinshan Nuclear Power. The spent fuel basket is the main equipment of the dry storage project. It is directly used to load spent fuel. Its structure is round and the material is not stainless steel. The key is that it has several welds. Especially important, the butt welds of the central column of the fuel basket, etc., the welding process requirements of these welds are high, and they are multi-layer welds. In order to verify the quality of these welds, the welding center column butt joint 1#- 1. Compare the test block, that is, through the ultrasonic inspection probe, record the inspection result of the center column welding test bl...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to develop a set of heavy water reactor spent fuel basket welding center column butt joint 1#-1 comparison test block to ensure the verification of the fuel basket welding quality, to ensure that the fuel basket is safe and reliable when lifting, and to effectively prevent the center column from being damaged. There is a risk of falling during hoisting due to welding quality problems

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