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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ASTM E213 – 14E1
A refraction angle of 45 degrees is typically used when examining pipe or tubes with a diameter-to-wall thickness ratio of no less than about 10 to 1. A higher minimum value is desirable and may be speci? 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? Restandardize the equipment in accordance with 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.
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. Originally approved in At the option of the testing agency, shallower notches may be used to provide a more stringent examination.
Record all search unit position settings, instrument control settings and standardization signal levels on an examination record sheet. The actual length of the worst case interception may be represented by: 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.
Active view current version of standard. The SI equivalents are in parentheses and may be approximate. 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.
For ease of fabrication, the inner surface notch should be nearer the end of the pipe or tube. Restandardize and reexamine the material if necessary, in accordance with the following procedures, unless otherwise speci? Alternatively, the using party or parties may specify speci? 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.
ASTM E – 14e1 Standard Practice for Ultrasonic Testing of Metal Pipe and Tubing
Users of this standard are expressly advised that determination of asrm validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
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, Asttm Annex A2. Artificial discontinuities consisting of longitudinal reference notches are employed as the primary means of calibrating the ultrasonic system.
The relative responses from both w213 inner and outer surface notches should be as nearly equal as possible and practical. Axial scanning with circumferential indexing may be used to provide equivalent coverage. 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 w213 condition for attempting to equalize both gated signals in the following step i.
These procedures have been successful with smaller sizes. A method for achieving the ast conditions is described below. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. 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 observed.
ASTM E – 14E1 – Standard Practice for Ultrasonic Testing of Metal Pipe and Tubing
Rotate the tube without translation that is, without motion along its longitudinal axis and observe on the instrument xstm screen asrm motion of the notch signal away from any residual interface signal.
These procedures have been successful with smaller sizes. Record the peak amplitude of the signal from the inner surface notch. In some instances, such as? The applicable edition of Practice E shall be speci? The use of smaller notches by the examination agency is permissible, provided that concurrence is obtained from the contracting agency.
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. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
NOTE 6—The amplitude of indications obtained from reference notches may not be linearly proportional to notch depth.
ASTM E213 Standard for Ultrasonic Testing of Metal Pipe Tube
This may be in the form of a strip chart recording or computerized data of the ultrasonic instrument output during the examination. 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. 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 wstm unit to the material.
Direct the search unit beam in one circumferential direction.
To prevent spurious signals or loss of sensitivity, or both, care must be taken to avoid the presence of air bubbles in the couplant. For small tubes, support mechanisms must be used in the examination station to prevent any transverse motion with respect to the search unit beam during scanning. 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.
If you feel that your comments have not xstm a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
The practice or standard used and its applicable revision shall be identi? These procedures have been used successfully for smaller sizes, however, and may be specified upon contractural agreement between the astk parties.
For many materials a 45 degree refraction angle may be achieved with a beam incidence angle of about 18 to 19 degrees. The procedure in Annex A1 is applicable to pipe and tubing used in nuclear and other special and safety applica- tions.
NOTE 10—Some traversing mechanisms do not allow examination of pipe or tube ends. NOTE 9—If a requirement exists for both longitudinal and transverse notches the following three options are available: Last previous edition approved in as E – Then the following steps shall be taken, depending upon the nature of the failure.
Make these checks prior to any examination run, prior to equipment shutdown after an examination run, and at least every hour during continuous equipment operation. Qstm the gain control to set the peak response at this re? Measurements may be made by optical, replicating, or other agreed upon techniques.
NOTE 3—In the contact method, some couplants result in better ultrasonic transmission when the tubing is precoated several hours before the examination.