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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The acceptance requirements for imperfections found by test methods according to this standard shall, unless otherwise specified, be assessed following EN Macroscopic tests shall be carried out in accordance with EN The examiner or examining body shall verify compliance with the above conditions and sign the prolongation of the welder’s approval test certificate.
Izo actual tests of a welder’s job knowledge can be given by any of the following methods or combinations of these methods: Owing to different training programmes in various countries, it is only proposed to standardize general objectives or categories of job knowledge.
For a branch weld the range of approval is based on the diameter of the branch; f in cases where the majority of production work is predominantly branch welding or involves a complex branch connection, the welder should receive special training.
The number of fracture or transverse bend test specimens depends on the welding position. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by Augustand conflicting national standards shall be withdrawn at the latest by August Aluminium and aluminium alloys — Part 3: It is not intended that thicknesses or diameters should be measured precisely but rather the general philosophy behind the values given in tables 1 and 2 should be applied.
When transverse bend testing is used, one root bend test specimen and one face bend test specimen shall be tested in accordance with EN All relevant test conditions shall be recorded on the certificate.
If it is established that failure is attributed to the welder’s lack of skill, the welder shall be regarded as incapable of complying with the requirements of this standard without further training before re-testing. The actual questions used should be drawn up by the individual country, but should include questions on areas covered in clause A.
This standard is intended to provide the basis for the mutual recognition by examining bodies for approval relating to welders’ competence in the various fields of application.
Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. 96006-3
ISO – Approval testing of welders — Fusion welding — Part 3: Copper and copper alloys
Specified procedures shall be used for all destructive and non-destructive examinations. The approval of the examiner or test body iwo be obtained. The macroscopic specimen shall be prepared and etched on one side to clearly reveal the weld see ENpolishing is not required.
When required, visual examination can be supplemented by penetrant see EN or other test methods see table 6.
ISO 焊工的认可试验.熔焊.铜及铜合金 – MBA智库文档
For one root fracture or one root transverse bend or one side bend test specimen Position 2: If any other form of welder’s approval test certificate is used, it shall contain the information required in Annex A of EN These normative references are cited at the appropriate places in the text and the publications are listed hereafter. The ability of the welder to follow verbal or written instructions and testing of his skill are important factors in ensuring the quality of the welded product.
For explanation of abbreviations used in the designation examples, see clause 4. Draft International Standards adopted by the Technical Committees are circulated to member bodies for voting.
If the imperfections in the welder’s test piece exceed the permitted maximum specified, then the welder shall not be approved. The certificate shall be issued under the sole responsibility of the examiner or examining body and shall contain all the information detailed in 9660-3 A of EN During the approval test the welder should be required to show adequate practical experience and job knowledge test non mandatory of the welding processes, materials and safety requirements for which he is to be approved; information on these aspects is given in Annex A.
Dimensions of test piece for a fillet weld on pipe 7. iwo
If the circumference is less than mm, additional weld test pieces will be required. A minimum weld length of mm is required, but not more than three test pieces.
BS EN ISO 9606-3:1999
In some cases a welder approval test on a branch connection can be necessary. A welder is approved if the imperfections in the test piece are within the specified limits of level B in ENexcept for imperfection types as follows: PA Details of the weld type: A change of process requires a new approval test.
The term ”copper” stands for copper and weldable copper alloys.