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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Direct the search unit beam in one circumferential direction. Rotate the tube without translation that is, without motion along its longitudinal axis and observe on the instrument display screen the motion of the notch signal away from any residual interface signal. 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? These procedures are intended to ensure that proper beam angles and beam shapes are used to provide full volume coverage of pipes and tubes, including those with low ratios of outside diameter-to-wall thickness, and to avoid spurious signal responses when examining small-diameter, thin-wall tubes.
No acceptable standardization repeatability can be provided in that case. If such a signal does not exist, make more frequent equipment standardization checks.
NOTE 6—The amplitude of indications obtained from reference notches may not be linearly proportional to notch depth. The pipe or tubing to be examined and the 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. It is recognized that in normal machining practice, a radius will be generated.
This signal may be observed, but not gated, as a supplement to the required checking of the reference standard to provide increased assurance that the equipment is functioning properly.
Record all search unit position settings, instrument control settings and standardization signal levels on an examination record sheet. The practice or standard used and its applicable revision e2213 be identi?
Axial scanning with circumferential indexing may be used to xstm equivalent coverage. Some differences in this procedure are required, as described below, depending upon whether satm contact or immersion technique is employed.
The reference pipe or tube shall be free of discontinuities or other conditions producing indications that can interfere with detection of the reference notches. 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.
NOTE 1—The immersion method may include tanks, wheel search units, or systems that use streams or columns of liquid to couple the ultrasonic energy from the search unit to the material. NOTE 10—Some traversing mechanisms do not allow examination of pipe or tube ends. ASTM E Standard for Ultrasonic Testing of Metal Pipe Tube This ast covers a procedure for detecting discon- tinuities in metal pipe and steel tubing during a volumetric exami- nation using ultrasonic methods.
ASTM E213 – 14E1
A refraction angle of 45 degrees is typically used astk examining pipe or tubes with a diameter-to-wall thickness ratio of no less than about 10 to 1. The use of smaller notches by the examination agency is permissible, provided that concurrence is obtained from the contracting agency. The procedure in Annex A1 is applicable to pipe and tubing used in nuclear and other special and safety applica- tions.
The relative responses from both the inner and outer surface notches should be as nearly equal as possible and practical.
Alternatively, the using party or parties may specify speci? The supplier shall maintain a report of the examination on?
This procedure becomes less critical for material of larger diameters and stiffness. Details of the procedures used to establish and apply the distance-amplitude correction DAC curve shall be established by the using party or parties. Restandardize the equipment in accordance with Alternatively, the search unit may be angulated in a plane perpendicular to the tube axis to produce the incidence angle.
The SI equivalents are in parentheses and may be approximate.
ASTM E – 14e1 Standard Practice for Ultrasonic Testing of Metal Pipe and Tubing
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. Then the following steps shall be taken, depending upon the nature of the failure. Run the reference standard with random initial translational and angular orientation through the examination station at full speed and scan pitch and observe, during multiple runs of the standard, the stability of the gated alarm signals from all notches in the reference standard on a strip-chart recorder or other means for observing signal amplitude stability or alarm function.
Link to Active This link will always route to the current Active version of the standard. Readjust the angulation and offset if necessary to renormalize by repeaking the interface signal.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Artificial discontinuities consisting of longitudinal reference notches are employed as the primary means of calibrating the ultrasonic system. The actual length of the worst case interception may be represented by: This requirement may be stated as: For very large-diameter material where this requirement is found to be impractical search units of other focal lengths or unfocused units may be used.
This does not ensure detection of midwall discontinuities See Reference 5. Axial scanning with circumferential indexing may be used, especially on larger material, to provide equivalent coverage. The instrument pulse repetition rate shall be capable of being adjusted to a sufficiently high value to ensure notch detection at the scanning rate employed. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
If it is determined that a lower refraction angle would be bene? It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Current edition approved June 1, These procedures are intended to ensure that proper refraction angles and beam shapes are used to provide full volume coverage of pipes and tubes, including those with low ratios of outside diameterto-wall thickness, and to avoid spurious signal responses when examining small-diameter, thin-wall tubes.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
In pipes and tubes with xstm several times larger than the length of a contact search unit, the general beam shapes are approximately the same.
The report shall include at least the following information: The applicable edition of Practice E shall be speci? The amplitude should decrease and increase as successive re?