ASTM E – Download as PDF File .pdf), Text File .txt) or read online. This standard is issued under the fixed designation E ; the number immediately 1 This practice is under the jurisdiction of ASTM Committee E07 on Nonde-. ASTM E – Designation: E – 09 Standard Practice for Ultrasonic Testing of Metal Pipe a.
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The amplitude should decrease and increase as successive re? For small tubes, support mechanisms must be used in the examination station to prevent any transverse motion with respect to the e13 unit beam during scanning. Axial scanning with circumferential indexing may be used e2133 provide equivalent coverage. Record the peak amplitude of the signal from the inner surface notch. The following selection and standardization procedure shall be used unless an alternative is approved by the contracting agency.
NOTE 12—Care should be exercised to ensure that reworking a pipe or tube does not change its acceptability with respect to other requirements of the material speci? Then the following steps shall be taken, depending upon the nature of the failure. For thick-wall tubes a lower refraction angle may be required for examination of the entire thickness 5. Link to Active This link will always route to the current Active version of the standard.
This inner surface notch signal must be well beyond the direct-in signal from the outer surface notch. Any of the apparatus types listed in Note 1 4. NOTE 9—If a requirement exists for both longitudinal and transverse notches the following three options are available: Certain combinations of search unit size, frequency, thin wall thicknesses, and small diameters could cause generation of unwanted sound waves that may produce erroneous test results.
ASTM E – 98 Standard Practice for Ultrasonic Examination of Metal Pipe and Tubing NO_PDF
Use the lesser of the two responses to establish the rejection level. Set the position and duration of the instrument alarm gate to include both of these e23.
If such a signal does not exist, make more frequent equipment standardization checks. For many materials a 45 degree refraction angle may be atm with a beam incidence angle of about 18 to 19 degrees. The procedure in Annex A2 may be used to determine the helical scan pitch. This depends upon the intercepting beam width to notch length. At the option of the testing agency, shallower notches may be used to provide a more stringent examination. The relative response from the inner and outer surface notches shall be as nearly equal as possible by selection of the pair of adjacent inner surface and outer surface notch signal nodes are asym.
This procedure becomes less critical for material of larger diameters and stiffness. Standardization of Apparatus Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
Active view current version of standard. Artificial reflectors consisting of longitudinal, and, when specified by the e2113 party or parties, transverse reference notches placed on the surfaces of a reference standard are employed as the primary means of standardizing the ultrasonic system.
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. The SI asm are in parentheses and may be approximate. When required, transverse outer surface and inner surface reference notches are typically placed in the same manner near the opposite end of the reference standard from the longitudinal notches.
Last previous edition approved in as E – ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Alternatively, the search unit may be angulated in a asrm perpendicular to the tube axis to produce the incidence angle. The pipe or tubing to be examined and asfm search unit assembly shall have a rotating translating motion relative to each other such that a helical scan path will be described on the outer surface of the pipe or tube.
When this condition exists, clearly indicate the extent of this effect, per tube, in the examination report. Annex A2 describes how maximum allowable pitch for stable detection may be determined from the length of the longitudinal astj notches and the minimum beam length of the search units.
ASTM E213 Standard for Ultrasonic Testing of Metal Pipe Tube
This is necessary to ensure detection of discontinuities that are as long as the notches in spite of their random locations with respect to the scan path, See Annex A2. This may be achieved in the immersion method by parallel offsetting the beam centerline from a perpendicular to a tangent of the surface by a distance equal to 1?
NOTE 8—Identical conditions include all instrument settings, mechanical motions, search unit position and alignment relative to the pipe or tube, liquid couplant, and any other factors that affect the performance of the examination.
The values stated in inch-pound units are to be regarded as standard.
For material with an outside diameterto-thickness ratio less than 7, a lower refracted angle or corresponding parameters for non-contact techniques must be used to ensure intersection with the inside surface.
The procedure in Annex A2 may be used to determine the helical scan pitch. NOTE 11—Rejected pipe or tubes may be reworked in a manner acceptable to the purchaser. On large diameter or heavy wall pipe and tubing, if the inner and outer surface notch amplitude cannot be made equal because of material soundpath distance and inside diameter curvature, a separate rejection level may be established for the inner and outer surface notches.
A number in parentheses indicates the year of last reapproval. The methods used for cleaning and preparing the surfaces for ultrasonic examination shall not be detrimental to the base metal or the surface? The use of smaller notches by the examination agency is permissible, provided that concurrence is obtained from the contracting agency. Standard ASTM E Standard for Ultrasonic Testing of Metal Pipe Tube This practice covers a procedure for detecting discon- tinuities in metal pipe and steel tubing during a volumetric exami- nation using ultrasonic methods.
Direct the search unit beam in one circumferential direction. This is often a convenient initial adjustment during system standardization. Restandardize and reexamine the material if necessary, in accordance with the following procedures, unless otherwise speci? No acceptable standardization repeatability can be provided in that case.