Purchase your copy of BS EN ISO as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards. A Reference number ISO (E) INTERNATIONAL STANDARD ISO First edition Approval testing of welders. ISO (E). INTERNATIONAL. STANDARD. ISO. First edition. Approval testing of welders — Fusion welding —. Part 3.
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BS EN ISO 9606-3:1999
For explanation of abbreviations used in the designation examples, see clause 4. The range of approval for each type of test is given in the relevant sub-clauses and tables. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher.
For undated references the latest edition of the publication referred to applies.
When macroscopic examination is used, at least four test specimens shall be taken equally spaced in the inspection length. This annex outlines the job knowledge that a welder should have to ensure that procedures are uso and common practices are complied with.
ISO 焊工的认可试验.熔焊.铜及铜合金 – MBA智库文档
Steels — Part 2: However, it is isk for a welder to be approved for more than one welding process by a single test or by two separate approval tests to be used to cover a multi-process joint. The practical test and the examination of job knowledge see Annex A shall be designated by ”Accepted” or ”Not tested”. Test specimen preparation, types of notch profiles and methods of fracture shall be in accordance with EN The welding processes referred to in this standard include those fusion welding processes which are designated as manual or partly mechanized welding.
A test is listed for each of the ranges of plate thickness and pipe wall thickness or pipe diameter as specified in tables 1 and 2. The test pieces shall be welded in accordance with the nominal angles of the positions according to EN ISO Reference should also be made to the corresponding acceptance criteria for non-destructive examination.
ISO – Approval testing of welders — Fusion welding — Part 3: Copper and copper alloys
Special tests do not have any range of approval, outside the range of tolerances for the test carried out. In cases where the majority of production work is fillet welding, the welder shall be approved also by an appropriate fillet welding test; e approval for butt welds in pipes without backing includes approval for 9660-3 connections within the same range of approval as in tables 3 to 5.
The examiner or examining body can stop the test if the welding conditions are not correct or if it appears that the welder does not have the technical competence to comply to the requirements of this standard, e.
When transverse bend testing is used, one root bend test specimen and one face bend test specimen shall be tested in accordance with EN Test methods Test method Butt weld plate Butt weld pipe Fillet weld Visual mandatory mandatory mandatory Radiography mandatory mandatory not mandatory Bend mandatory 1 mandatory 1 not mandatory Fracture mandatory 1 mandatory 1 mandatory 2 Macroscopic not mandatory not mandatory not mandatory 2 Penetrant not mandatory not mandatory not mandatory 1 Bend or fracture test shall be used, but not both test methods.
This standard covers the following welding processes: A Reference number ISO This standard applies to the approval testing of welders for the fusion welding of copper. Nickel and nickel alloys — Part 5: Each position one face fracture or one face transverse bend or one side bend test specimen b Sectioning into at least four test specimens c Inspection length of the test specimen NOTE Figure c shows the notch profile q d Fracture testing, face side e Fracture testing, root side Figure 7: A full explanation of these imperfections is given in EN Specified procedures shall be used for all destructive and non-destructive examinations.
The job knowledge indicated in this annex is only pitched at the most basic level. The macroscopic specimen shall be prepared and etched on one side to clearly reveal the weld see ENpolishing is not required. For example in a case where approval is required for a single-side butt joint with the root to be welded by TIG without backing and to be filled by MIGthe welder can be approved by either of the following routes: In these tables the range of approval is indicated in the same horizontal line.
The test of job knowledge is limited to the matters related to the welding process used in the test. When radiographic testing is used, the inspection length of the weld see figure 7 a and 7 b in the test piece shall be radiographed in the as-welded condition in accordance with EN using class B technique. The certificate of approval testing is issued under the sole responsibility of the examiner or examining body. The specimen preparation, types of notch profiles and methods of fracture shall be in accordance with EN Each change of the essential variables for the approval testing beyond the permitted ranges requires a new test and a new approval certificate.
In addition, the requirements for mechanical tests are indicated. For welding position PA or PC, one root and one face bend test specimen shall be tested see figure 7 a. Material groups io to CR 5.
Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. The work of preparing International Standards is normally carried out through ISO technical committees.
The welding of any one material in a group confers approval on the welder for the welding of all other materials within the same group. Preparation and fracture testing of test specimens for a fillet weld on pipe When macroscopic examination in accordance with EN is used, at least four test specimens shall be taken equally spaced around the pipe.
If the circumference is less than isk, additional weld test pieces will be required.
The examiner or examining body shall verify compliance with the above conditions and sign the prolongation of the welder’s approval test certificate. Preparation and fracture testing of test specimens for a fillet weld on plate 7.
These normative references are cited at the appropriate places in the text and the publications are listed hereafter. One root fracture test specimen and one face fracture test specimen shall be tested.
For all other welding positions, two root and two face bend test specimens shall be tested see figure 7 b.