A nuclear class welder examination gage

Abstract

The utility model discloses a nuclear level welder examination and inspection ruler, including the ruler main part, the ruler main part includes a plurality of edges, is first edge, second edge, third edge, fourth edge, fifth edge and sixth edge respectively, first edge, second edge, third edge, fourth edge, fifth edge and sixth edge are connected in proper order and are connected in proper order, wherein the first edge and the second edge are provided with the scale, and the third edge and the sixth edge are provided with at least one slot. The utility model utilizes nuclear level welder examination and inspection ruler, can effectively guarantee that the weld edge straightness, the fillet weld concave-convex degree and the shouting size, the weld excess height, the weld width etc. meet the requirement of the weld appearance in the civil nuclear safety equipment welder operation skill examination requirement, improve the welder examination visual inspection (VT) pass rate.

Description

Technical Field

[0001] This utility model relates to the field of inspection ruler technology, and in particular to an inspection ruler for nuclear-grade welder examinations. Background Technology

[0002] The "Regulations on the Qualification Management of Welders for Civil Nuclear Safety Equipment" (HAF603), issued in 2019 and implemented in January 2020, has undergone significant revisions compared to the 2007 version of HAF63, including its examination requirements. According to the new regulations, the nuclear-grade welder's operation method examination uses typical test pieces to assess the comprehensive skills and operational process control awareness of welders working on civil nuclear safety equipment. Additionally, 10 disqualifying factors have been added to the examination process to strengthen process control and promote a nuclear safety culture.

[0003] Recently, the failure rate of visual inspection (V)T in the examination items has been high (approximately 40%). The main reasons are insufficient weld size, weld width on each side not in accordance with regulations, and difficulty for examiners to grasp the weld size and weld ratio, resulting in a high failure rate in the examination items. Utility Model Content

[0004] This invention aims to solve the problem that examinees have difficulty grasping weld dimensions and weld ratios, leading to a high failure rate in examination items. A nuclear-grade welder examination inspection ruler is proposed, which can effectively improve the pass rate of visual inspection (VT) in welder examinations.

[0005] To achieve the above objectives, this utility model proposes: A nuclear-grade welder examination inspection ruler includes a ruler body, which has several sides, namely a first side, a second side, a third side, a fourth side, a fifth side, and a sixth side. The first side, the second side, the third side, the fourth side, the fifth side, and the sixth side are connected end to end in sequence. The first side and the second side are provided with scales, and the third side and the sixth side are each provided with at least one slot.

[0006] Preferably, the thickness of the ruler body is 1.5mm-3mm.

[0007] Preferably, the angle formed by the first edge and the sixth edge is 60°.

[0008] Preferably, the third side has one slot and the sixth side has two slots.

[0009] The beneficial effects of this utility model are: This utility model utilizes a nuclear-grade welder examination inspection ruler to effectively ensure that the weld edge straightness, fillet weld concavity and convexity, weld size, weld reinforcement, weld width, and other items meet the weld appearance requirements in the operational skills examination for welders of civil nuclear safety equipment, thereby improving the pass rate of visual inspection (VT) in welder examinations.

[0010] The features and advantages of this utility model will be described in detail through embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0011] Figure 1 This is the structure of the utility model Figure 1 ; Figure 2 This is the structure of the utility model Figure 2 ; Figure 3 This is a dimensional drawing of this utility model; Figure 4 This is a reference for the usage status of this utility model. Figure 1 ; Figure 5 This is a reference for the usage status of this utility model. Figure 2 ; Figure 6 This is a reference for the usage status of this utility model. Figure 3 .

[0012] In the diagram: 1. Ruler body, 11. First side, 12. Second side, 13. Third side, 14. Fourth side, 15. Fifth side, 16. Sixth side, 2. Groove, 21. First through hole, 3. Scale. Detailed Implementation

[0013] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0014] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses consistent with some aspects of this application as detailed in the appended claims.

[0015] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this utility model pertains. The words “a” or “one” and similar terms used in this application specification and claims do not indicate a limitation of quantity, but rather indicate the presence of at least one. “A plurality” includes two, equivalent to at least two. The words “comprising” or “including” and similar terms mean that the element or object preceding “comprising” or “including” covers the element or object listed following “comprising” or “including” and its equivalents, and does not exclude other elements or objects. The words “connected” or “linked” and similar terms are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. The singular forms “a,” “the,” and “the” used in this application specification and appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0016] Please refer to Figure 1-3 A nuclear-grade welder examination inspection ruler includes a ruler body 1, which is made of equilateral triangular austenitic stainless steel with a side length of 80mm and a thickness of 2mm, and is formed by laser cutting or wire cutting. The ruler body 1 includes several sides, namely, a first side 11, a second side 12, a third side 13, a fourth side 14, a fifth side 15, and a sixth side 16, which are connected end-to-end in sequence. The first side 11 and the second side 12 are provided with graduations 3.

[0017] In this embodiment, Figure 3 Angle C in the diagram is 60°, meaning the angle formed by the first side 11 and the sixth side 16 is 60°. Figure 3 Angle A in the diagram, that is, the angle formed by the extensions of the first side 11 and the second side 12, is 60°.

[0018] It is important to note that Figure 3 All dimensions are in mm.

[0019] For details, please refer to the following: Figure 4 The angles A and C are 60°, which are consistent with the bevel angles of pipe-to-plate or plate-to-plate test specimens tested by SMAW, GTAW and other operating methods. This angle can be used to simply verify the conformity of the bevel angle.

[0020] In this embodiment, edges A and C, i.e. the first edge 11 with scale 3, can be used to check for misaligned edges during assembly.

[0021] Furthermore, at least one slot 2 is provided on both the third edge 13 and the sixth edge 16.

[0022] Furthermore, one slot 2 is provided on the third edge 13, and two slots 2 are provided on the sixth edge 16, respectively, to check the weld reinforcement of plate butt joints and pipe butt joints and the increase in width compared to each side, which can be referred to. Figure 5 Use a measuring ruler to check the bevel dimensions and assembly gaps.

[0023] In this embodiment, the slot 2 on the third side 13 is 18mm long and 4mm wide, one slot 2 on the sixth side 16 is 16mm long and 4mm wide, and the other slot 2 on the sixth side 16 is 12mm long and 4mm wide.

[0024] For details, please refer to the following: Figure 6 The fourth edge 14 at corner B is used to check the dimensions of the corner weld of the tube sheet.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A nuclear-grade welder examination inspection ruler, characterized in that, The ruler includes a main body, which has several sides, namely a first side, a second side, a third side, a fourth side, a fifth side, and a sixth side. The first side, the second side, the third side, the fourth side, the fifth side, and the sixth side are connected end to end in sequence. The first side and the second side are provided with scales, and the third side and the sixth side are each provided with at least one slot.

2. The nuclear-grade welder examination inspection ruler according to claim 1, characterized in that, The thickness of the ruler body is 1.5mm-3mm.

3. The nuclear-grade welder examination inspection ruler according to claim 1, characterized in that, The angle formed by the first edge and the sixth edge is 60°.

4. The nuclear-grade welder examination inspection ruler according to claim 1, characterized in that, One slot is provided on the third side, and two slots are provided on the sixth side.

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