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7.1 SupervisionThe welding of test pieces shall be witnessed by the examiner or examining body. The testing shall beverified by the examiner or examining body.The test pieces shall be marked with the identification of the examiner and the welder before weldingstarts.The examiner or examining body may stop the test if the welding conditions are not correct or if itappears that the welder does not have the skill to fulfil the requirements of this European Standard.7.2 Shapes and dimensions of test piecesThe shapes and dimensions of test pieces required are shown in Figures 1, 3, 5 and 6.7.3 Welding conditionsPreparation and welding shall be in accordance with a pWPS or WPS in accordance withEN ISO 15609-1 and EN ISO 15609-2. Before generating pWPS or WPS the following conditions shall befulfilled:a) welding process(es) of the qualification test(s) shall be similar to the process(es) in practice;b) assortment of welding consumables shall be aligned to welding position and welding process, e.g.welding with non-homogeneous filler metal NiFe1 in accordance with EN ISO 1071;c) joint preparation and dimensions of cast iron test piece(s) shall be in accordance with Figures 1, 3,5 and 6;d) welding position(s) shall be similar to the position(s) in practice (Figure C.1);e) assessment of weld shall be in accordance with Clause 8;f) welding time for the test piece shall correspond to the working time under usual productionconditions.BW and CPC test pieces shall be in accordance with this European Standard single-side welds.

7.5 Test pieces and test specimen7.5.1 GeneralIn 7.5.2 to 7.5.5 details of the type, dimensions and preparation of the test piece(s) and test specimenare given. In addition, the requirements for destructive tests are indicated.7.5.2 Butt weld of cast iron plate (BW)When fracture tests in accordance with EN ISO 9017 shall be made, the examination range shall includethe total testing area. For this reason, the test piece shall be divided into two parts (Figure 2 a)). Thelength of the fracture test specimen is approximately 65 mm. If necessary, the weld reinforcement canbe removed, and starting and ending point of the weld can be notched (approximately 5 mm, Figure 2b)). For single-side welds (ss) without backing (nb) half of the examination length should be within theface and the other half within the root layer (Figures 2 c) and 2 d)).