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.
|Published (Last):||18 September 2013|
|PDF File Size:||10.33 Mb|
|ePub File Size:||19.19 Mb|
|Price:||Free* [*Free Regsitration Required]|
Excessive surface roughness or scratches can produce signals that interfere with the examination. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Interpretation of Results NOTE 7—Distance-Amplitude Correction— A method of compensating for the reduction in ultrasonic signal amplitude as a function of material sound-path distance may be employed.
If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Direct the search unit beam in one circumferential direction. 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?
For small tubes, support mechanisms must be used in the aatm station to prevent any transverse motion with respect to the search unit beam astn scanning. Then the following steps shall be taken, depending upon the nature of the failure.
These procedures have been used successfully for smaller sizes, however, and may be specified upon contractural agreement between the using parties.
ASTM E – 14E1 – Standard Practice for Ultrasonic Testing of Metal Pipe and Tubing
No acceptable standardization repeatability can be provided in that case. Alternatively, the search unit may be angulated in a plane perpendicular to the tube axis to produce the incidence angle. If such a signal does not exist, make more frequent equipment standardization checks. Use the lesser of the two responses to establish the rejection level. This inner surface notch signal must be well beyond the direct-in signal from the outer surface notch.
Axial scanning with circumferential indexing may be used to provide equivalent coverage. It is recognized that in normal machining practice, a radius will be generated.
On large-diameter or heavywall pipe and tubing, if the inner and outer surface notch signal amplitudes cannot be equalized because of material sound path distance and inside diameter curvature, a separate rejection level may be established for the inner and outer surface notches, or, in this case, DAC may be used to balance the signal amplitudes from the outer surface and inner surface notches.
Rust inhibitors, softeners, and wetting agents may be added to the couplant. 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.
The outer surface notch signal subsequently used for standardization should then be from the node immediately beyond the inner surface notch signal to obtain the best condition for attempting to equalize both gated signals in the following step i. The amplitude should decrease and increase as successive re?
Active view current version of standard.
The relative response from the inner and outer surface notches shall be as nearly equal as possible by selection aztm the pair of adjacent inner surface and outer surface notch signal nodes are observed.
The following selection and standardization procedure shall be used unless an alternative is approved by the contracting agency.
In cases where the type of examination, material dimensions or other properties make the use of spherically or? The procedure inAnnexA2 may be used to determine the helical scan pitch. Some differences in this procedure are required, as described below, depending upon whether the contact or immersion technique is employed.
In some instances, such as? 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- aztm using ultrasonic methods. The procedure in Annex A2 may be used to determine the helical scan pitch. Link awtm Active This link will always route to the current Active version of the standard.
Awtm the option of the testing agency, shallower notches may be used to provide a more stringent examination. The values stated in inch-pound units are to be regarded as standard. Restandardize and reexamine the material if necessary, in accordance with the following procedures, unless otherwise speci?
ASTM E213 – 14E1
Standardization of Apparatus These procedures have asstm successful with smaller sizes. Standard ASTM E Standard asmt 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.
When examination of heavy-wall pipes and tubes is required the focal length, refraction angle and included beam angle of focused search units shall be suitable for complete through-wall coverage See 5.
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. 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.
The response from the inner and outer surface notches should be as nearly equal as possible. Note— Alternatively, set-up on the inner surface notch may be performed before set-up on the outer surface notch, as described in step h above. NOTE 5—For as-rolled or scaly pipe or tube surfaces, it may be necessary to modify When this condition exists, clearly indicate the extent of this effect, per tube, in the examination report.
Any of the apparatus types listed in Note 1 4.
Record the peak amplitude of the signal from the inner surface notch. Originally approved in Axial scanning with circumferential indexing may be used, especially on larger material, to provide equivalent coverage. It shall contain recordings of all standardizations and standardization checks and should be annotated to provide a positive correlation between examination record for each reject pipe or tube and the corresponding pipe or tube.
An independent channel or channels of instrumentation shall be employed to individually monitor the responses from the longitudinal and, when required, transverse oriented search units. 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.
A method for achieving the required conditions is described below. If transverse as well as longitudinal examination is desired, a procedure for employing transverse notches is provided.
If it is determined that a lower refraction angle would be bene? For many materials a 45 degree refraction angle may be achieved with a beam incidence angle of about 18 to 19 degrees. The reference pipe or tube shall be free of discontinuities or other conditions producing indications that can interfere with detection of the reference notches.