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 – Approval testing of welders. Fusion welding. Copper and copper alloys
For any copper alloy not covered by any of the copper groups 96066-3 welder shall carry out an approval test, which only approves for that copper. If any of these conditions are not fulfilled, the approval shall be revoked. The certificate shall be issued under the sole responsibility of the examiner or examining body and shall contain all the information detailed in Annex A of EN The practical test and the examination of job knowledge see Annex A shall be designated by ”Accepted” or ”Not 960-63.
The is ”copper” stands for copper and weldable copper alloys. The format of this Annex A of EN If the job knowledge test is carried out, it should be recorded on the welder’s certificate. The test pieces shall be welded in accordance with the nominal angles of the positions according to EN ISO When welding parent metals from two different groups which do not give approval to each other according to table 4 see 6.
BS EN ISO 9606-3:1999
One test piece per position. The examiner or examining body shall verify compliance with the above conditions and sign the prolongation of the welder’s approval test certificate.
These normative references are cited at the isi places in the text and the publications are listed hereafter. Testing of skill to this standard depends on welding methods in which uniform rules and test conditions are complied with, and standard test pieces are used. Steels — Part 2: 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 macroscopic specimen shall be prepared and etched on one side to clearly reveal the weld see ENpolishing is not required. A minimum weld length of mm is required, but not more than three test pieces. This standard applies to the approval testing of welders for the fusion welding of copper.
For one root fracture or one root transverse bend or one side bend test specimen Position 2: The test of job knowledge is limited to the matters related to the welding process used in the test. The welding of any one material in a group confers approval on the welder for the welding io all other materials within the same group. In these tables the range of approval is indicated in the same horizontal line. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision.
ISO 焊工的认可试验.熔焊.铜及铜合金 – MBA智库文档
In general, a welder’s approval test lso involve depositing weld metal having a chemical composition compatible with any copper in the parent isoo group s. 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.
An interruption for a period no longer than six months is permitted; b There is no specific reason to question the welder’s skill and knowledge.
The approval of the examiner or test body shall be obtained. 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 9066-3the welder can be approved by either of the following routes: Test specimen preparation, types of notch profiles and methods of fracture shall be in accordance with EN Aluminium and aluminium alloys EN This annex oso the job knowledge that a welder should have to ensure that procedures are followed and common practices are complied with.
The actual tests of a welder’s job knowledge can be given by any of the following methods or combinations of these methods: If the welder fails any of the prescribed tests, no certificate shall be issued. The job knowledge indicated in this annex is only pitched at the most basic level.
Each criterion is considered to be a significant factor in the approval testing. If the circumference is less than mm, additional weld test pieces will be required. The welder’s approval test shall be carried out on test pieces and is independent of the type of construction. The test piece can be sectioned by mechanical means discarding the first and the last 25 mm of the test piece at the ieo of the plates figures 5 and 6. Preparation and fracture testing of test specimens for a fillet weld on plate 7.
This date can be different to the date of issue marked on the certificate. A full explanation of these imperfections is given in EN 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: Draft International Standards adopted by the Technical Committees are circulated to member bodies for voting.
A welders approval is valid for a period of two years provided that the relevant certificate is confirmed at six months intervals by the welding coordinator or the employer, and that all the following conditions are 966-3 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.
If the imperfections in the welder’s test piece exceed the permitted maximum specified, then the welder shall not be approved.
When required, visual examination can be supplemented by penetrant see EN or other test methods 96063- table 6. Preparation and fracture testing of test specimens for a butt weld in plate 7.
This standard covers approval testing of welders for work on semi-finished and finished products made from wrought, forged or cast material types listed in 5.
In some cases a welder approval test on a 9606-33 connection can be necessary. The range of approval for each type of test is given in the relevant sub-clauses and tables.
The acceptance requirements for imperfections found by test methods according to this standard shall, unless otherwise specified, be assessed following EN 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.
When transverse bend testing is used, it shall be carried out in accordance with EN Throughout the text of this standard, read 9606–3 Prior to mechanical testing, backing strips, where used, shall is removed. However, some countries can require that the welder undergoes a test of job knowledge.