Non-destructive testing shall be applied if it is stipulated in the investigation and order. Under this topic are grouped the tests, which aim to highlight defects that cannot be revealed by a simple Visual inspection, such as penetrating, magnetic particle, ultrasonic, radiography X or gamma-radiographic inspection; also included under this heading are tests on the State of surface by Visual or Visual-tactile examination. The buyer must specify in the investigation and order:
15 repair CASTINGS 15.1 unless otherwise specified by the purchaser in the investigation and order, castings can be corrected by welding. All repairs by welding must be carried out in accordance with the procedure referred to IS 5530. If casts were submitted to non-destructive testing by agreement between the purchaser and the manufacturer, casts of re-examined in the field of repair following an operation carried out rectification on castings.
The type of non-destructive control intending to carry out or to have carried out; The areas of the casting to which b) applied these tests, and the types of discontinuity, as appropriate; CL if all, or what proportion, castings are to be tested; 4. the severity level defining the acceptability or non-acceptability of defects which may be disclosed; and. (e) whether or not the manufacturer is contractually responsible for the completion of trials. 14.2 unless otherwise agreed, when nondestructive testing is to be done, presswork, must be examined as follows: to form the basis of an agreement between the buyer and the supplier in this regard where appropriate, the following classification shall apply for the extent of the reparation: a) repair Weld involving a depth not exceeding 20 per cent of the thickness of the wall or 25 mm , according to the lower, must be qualified as a minor repair. Repair welding exceeding the above must be qualified as a major repair. In addition any single repair having an area greater than 250 Imn square for each millimetre of thickness must also ofwall East of 1030: 1998 that he believed to be a major repair, regardless of the considerations mentioned in (a) above.
Equivalent of 15.3 Carbon unless otherwise indicated in the investigation and order. or othetwise agreed, the CEV (EC) for the purpose of orientation in the determination of the treatment pre-and post-weld applicable to carbon and low-alloy steels shall be calculated as follows: carbon equivalent Mn (EC) = C + – + 6 16 hydraulic test Cr + Mo + V + 5 Ni Cu + – 15 18 18.1 marking each casting must be clearly marked with the following which may be relevant. However, when links and traceability are necessary the relevant marking shall be indelible: has) number or identification mark by which it is possible to trace the melting and heat treatment lot from which it was made; Initials or trademark of the manufacturer; and other identification marks, in accordance with an agreement between the purchaser and the manufacturer.