ASTM E213:20 pdf download

ASTM E213:20 pdf download.Standard Practice for Ultrasonic Testing of Metal Pipe and Tubing.
13.2 Standardization Checks—Periodically check the dynarnic standardization of the equipment by passing the reference standard through the examination system in accordance with 12.2. Make these checks prior to any examination run, prior to equipment shutdown after an examination run, and at least every four hours during continuous equipment operation. Restandardize the equipment in accordance with 12.1 and 12.2 any time the equipment fails to produce the signal amplitudes or other conditions for rejection within the tolerances agreed upon with the contracting agency or the product manufacturer’s procedure. In the event that the equipment does not meet this requirement. reexamine all pipe or tubing examined since the last acceptable standardization after restandardization has been accomplished.
13.2.1 When required by the purchaser, more specific restandardization criteria may be specified.
13.3 For many tubular sizes and examination arrangements. there will be a reflection from the entry surface of the pipe or tube. This signal may be observed, but not gated for evaluation purposes, as a supplement to the required checking of the reference standard to provide increased assurance that the equipment is functioning properly. If such a signal does not exist, make more frequent equipment standardization checks.
13.4 Do not make any equipment adjustments, during examination, unless the complete standardization procedure described in Section 12 is performed after any such adjustment.
13.5 The examination shall he applied to 1(X) % of the pipe or tubing unless otherwise specified.
NOTE 8—Some traversing mechanisms do not allow examination of pipe or tube ends. When this condition exists, clearly indicate the extent of this effect, per tube, in the examination report.
14. Interpretation of Results
14.1 All indications that are equal to or greater than the rejection level established during standardization as described in Section 12, using the agreed upon reference indicators described in 11.5, shall he considered as representing defects and may he cause for rejection of the pipe or tube. Alternatively, the using party or parties may specify specific acceptance criteria or other means (manual or semi—automated techniques) to further evaluate the indication to determine its acceptability.
14.2 If, upon further examination of the pipe or tube, no rejectable indications are detected, the material shall be considered as having passed the ultrasonic examination, except as noted in 13.2.
Nom 9—Rejected pipe or tubes may be reworked in a manner acceptable to the purchaser. If, upon ultrasonic reexamination of the reworked pipe or tube, no rejectable indications are detected, the material should he considered as having passed the ultrasonic examination.
NOTE lO—Care should he exercised to ensure that reworking a pipe or tube does not change its acceptability with respect to other requirements of the material specification such as wall thickness, ovality, surface finish, length, and the like.
15. Documentation
15.1 When a report is required, it shall contain such information as is mutually considered adequate to document.