ISO 10893-10:2011 pdf download.Non-destructive testing of steel tubes —Part 10: Automated full peripheral ultrasonic testing of seamless and welded (except submerged arc-welded) steel tubes for the detection of longitudinal and/or transverse imperfections.
The operating authorization issued by the employer shall be according to a written procedure. Non-destructive tasting (NDT) operations shall be authorized by a level 3 NDT individual approved by the employer.
NOTE The detinibon of levels 1. 2 and 3 ci be found ii appropriate International Standards, e.g. ISO 9712 and ISO 11484.
5 Test method
51 The tubes shall be tested by using an ultrasonic shear wave technique for the detection of longitudinal and transverse imperfections. Lamb wave technique may be applied for the detection of longitudinal imperfections.
52 During testing, the tubes and the transducer assembly shall be moved relative to each other such that the whole of the tube surface is scanned, with coverage calculated on the dimension of the transducer(s). The relative speed of movement during testing shall not vary by more than ±10%. There can be a short length at both tube ends which cannot be tested. Any untested ends shall be dealt with in accordance with the requwements of the appropriate product standard (see Annex B).
5.3 Unless otherwise agreed on by the pUrchaser and manufacturer, testing shall be carried out in two opposite directions of Sound propagation for the requested type of inspection, clockwise and anticlockwise for the detection of longitudinal defects and forward and backward for the detection of transversal detects.
5.4 For the detection of longitudinal imperfections, the maximum width of each individual transducer. measured parallel to the major axis of the tube, shall be 25 mm, For Ui category tubes with an outside diameter equal to or less than 50 mm, the width of any one transducer unit shall normally be restricted to a maximum of 12.5 mm.
NOTE The detinibon of levels 1. 2 and 3 ci be found ii appropriate International Standards, e.g. ISO 9712 and ISO 11484.
5 Test method
51 The tubes shall be tested by using an ultrasonic shear wave technique for the detection of longitudinal and transverse imperfections. Lamb wave technique may be applied for the detection of longitudinal imperfections.
52 During testing, the tubes and the transducer assembly shall be moved relative to each other such that the whole of the tube surface is scanned, with coverage calculated on the dimension of the transducer(s). The relative speed of movement during testing shall not vary by more than ±10%. There can be a short length at both tube ends which cannot be tested. Any untested ends shall be dealt with in accordance with the requwements of the appropriate product standard (see Annex B).
5.3 Unless otherwise agreed on by the pUrchaser and manufacturer, testing shall be carried out in two opposite directions of Sound propagation for the requested type of inspection, clockwise and anticlockwise for the detection of longitudinal defects and forward and backward for the detection of transversal detects.
5.4 For the detection of longitudinal imperfections, the maximum width of each individual transducer. measured parallel to the major axis of the tube, shall be 25 mm, For Ui category tubes with an outside diameter equal to or less than 50 mm, the width of any one transducer unit shall normally be restricted to a maximum of 12.5 mm.
