ISO 13588:2019 pdf free
ISO 13588:2019 pdf free.Non-destructive testing of welds一Ultrasonic testing一Use of automated phased array technology
From testing level A to testing level C, an increasing probability of detection is achieved by an increasing testing coverage, e.g. number of incidences, combining techniques.
Testing level D may be agreed for special applications using a written procedure which shall take into account the general requirements of this document. This includes tests of metals other than ferritic steel, tests on partial penetration welds, tests with automated equipment and tests at object temperatures outside the range. For coarse-grained or austenitic steels, ISO 22825 shall also be used.
In general, the testing levels are related to quality levels (e.g. according to ISO 5817). The appropriate testing level can be specified by standards for the testing of welds (e.g. ISO 17635), by product standards or by other documents. When ISO 17635 is specified, the testing levels in relation to ISO 5817 as given in Table 1 shall be used.
Table 2 shows the minimum requirements and in all cases, as described in 7.2, the setup shall be verified with a reference block. In cases where scanning is performed from one face (excluding TOFD), half and full skip shall be used and stored; if scanning is performed from both faces, half skip is sufficient.If diffraction signals are detected they may be used for sizing.
If the evaluation of the discontinuities is based on amplitude only, the deviation of the beam direction from the normal to the weld bevel shall not exceed 6°. If this is not possible because of the geometry of the test object (e.g. weld cap, narrow gap weld), the scan plan shall describe the corrective measures and explain how these areas to be tested shall be covered with enough sensitivity
In addition to general knowledge of ultrasonic weld testing, the operators shall be familiar with, and have practical experience in, the use of ultrasonic phased arrays. Specific training and examination of personnel should be performed on representative pieces. These training and examination results should be documented. If this is not the case, specific training and examination should be performed with the finalized ultrasonic testing procedures and selected ultrasonic test equipment on representative samples containing natural or artificial reflectors similar to those expected. These training and examination results should be documented.ISO 13588 pdf free download.
