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. This practice2 covers a procedure for detecting discontinuities in metal pipe and tubing during a volumetric examination using ultrasonic methods. The procedure in Annex A1 is applicable to pipe and tubing used in nuclear and other special and safety applications. For ASME Boiler. ASTM E - Designation: E – 09 Standard Practice for Ultrasonic Testing of Metal Pipe a.
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If such a signal does not exist, make more frequent equipment standardization checks. NOTE 10—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. Interpretation of Results Alternatively, the using party or parties may specify speci?
NOTE 11—Rejected pipe or tubes may be reworked in a manner acceptable to the downloadr.
ASTM E 213
If, upon ultrasonic reexamination of the reworked pipe or tube, no rejectable indications are detected, the material should be considered as having passed the ultrasonic examination. 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? 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 Documentation This may be in the form of a strip chart recording or computerized data of the ultrasonic instrument output during the examination. 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.
The supplier shall maintain a report of the examination on? The report shall include at least the following information: Keywords The immersion method is almost always required for examining tubes for these uses. In some instances, such as? 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.
The incident and refracted beams in these cases are pictured as being generated by a cylindrically focused immersion search unit. In pipes and tubes with diameters several times larger than the length of a contact search unit, the general beam shapes are approximately the same.
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. 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.
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. For many materials a 45 degree refraction angle may be achieved with a beam incidence angle of about 18 to 19 degrees.
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? This is often a convenient initial adjustment during system standardization.
For ease of fabrication, the inner surface notch should be nearer the end of the pipe or tube. 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. Although not mandatory, this practice enables all notches to be placed far enough from the ends to insure good support of the material end nearest the search unit s during set-up, and the inner surface notches to be near ends to facilitate insertion of the fabrication and veri?
This procedure becomes less critical for material of larger diameters and stiffness. The relative responses from both the inner and outer surface notches should be as nearly equal as possible and practical. Some differences in this procedure are required, as described below, depending upon whether the contact or immersion technique is employed.
ASTM E213-02 UT-Pipes & Tubing.pdf
See Annex A2. If it is determined that a lower refraction angle would be bene? Direct the search unit beam in one circumferential direction. Adjust the gain control to set the peak response at this re?
Record the peak amplitude of the signal from the inner surface notch. 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. 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.
Any of the apparatus types listed in Note 1 4. 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? 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.
Readjust the angulation and offset if necessary to renormalize by repeaking the interface signal. These readings represent the effect of the substrate conditions on the coating thickness measurement device. One type of magnetic gage referenced in original SSPC-PA 2 for measuring dft Figures courtesy of the author except where otherwise indicated. On a larger structure with multiple applicators, the measurement and documentation process could be extensive, so the approach was changed in the revision.
For example, assume that the specification requires a four- to six-mil application of primer.
February 5, at 2: Adjustment of Type 2 gages to compensate for substrate characteristics described later is typically performed using certified shims. While individual gage readings that are unusually high or low and cannot be repeated consistently can be discarded, there are limitations on the thickness values representing the spot measurements the average of three gage readings.
I am assuming you are using an electronic gage:. Depending on the coating type and the prevailing service environment, the specifier can select the DFT restriction level for a given project. The number of spot measurements along the edge will vary, depending on the sstm length of the coated edge.
ASTM E213 PDF
While some gage operators may simply subtract a fixed amount for example, 0. This includes personalizing content and advertising. The SI equivalents are in parentheses and may be approximate.
Published June Last previous edition approved in as E - SE in the Code. NW, Washington D. Summary of Practice 6. Basis of Application 4. Multiple search units may be employed for interlaced scanning in 6.
Significance and Use agreement. If speci- tions or interference from other instruments and search units fied in the contractual agreement, NDT agencies shall be being used for simultaneous examinations in other directions or qualified and evaluated as described in Practice E The along other scan paths.
See 7. Personnel Qualification from irregularities such as grain boundaries and surface rough- 7.
A higher minimum certified by the employer or certifying agency, as applicable. Surface Condition produce an approximate 45 degrees beam-center shear wave in the tube or pipe wall.
For material with an outside diameter- 8. The methods used for used to ensure intersection with the inside surface. This does cleaning and preparing the surfaces for ultrasonic examination not ensure detection of midwall discontinuities See Reference shall not be detrimental to the base metal or the surface finish.
Excessive surface roughness or scratches can produce signals that interfere with the examination.
ASTM E213 Standard for Ultrasonic Testing of Metal Pipe Tube
Apparatus a stable manner and at the desired scan pitch helix. For 9.
If larger material that is tion procedure described in Section An independent chan- not straight is to be examined the search units may have to be nel or channels of instrumentation shall be employed to supported in a follower mechanism to compensate for this.
The instrument Couplant pulse repetition rate shall be capable of being adjusted to a Rust inhibitors, softeners, and wetting agents may be depending on the angle, frequency, and vibrational mode of the added to the couplant. The couplant liquid with all the interrogating sound beam. It is recognized that in normal machining practice, a radius provide adequate coupling efficiency. To prevent spurious will be generated. Measurements may be made by ultrasonic transmission when the tubing is precoated several hours before optical, replicating, or other agreed upon techniques.
Unless the examination. Reference Standards depth shall be within At the option of the testing agency, diameter, wall thickness, material, surface finish, and acousti- shallower notches may be used to provide a more stringent cal properties as the material to be examined.
The reference examination. Two acceptable modifications are listed reference notches. Modification a is preferred; however, modification b may be The use of This depends upon the common notch configurations and the dimensions to be mea- intercepting beam width to notch length.
Reflection amplitudes from V-, square-, and Standardization of Apparatus upon with the contracting agency.At the option of the testing agency, shallower notches may be used to provide a more stringent examination.
Set the position and duration of the instrument alarm gate to include both of these signals.
Adjust the gain control to set pitch to be employed. Select a convenient node well away from material, for example, less than 4 inches mm in diameter, the direct-in intersection of the beam on the outer surface is for the examination system to produce a rotating and notch which coincides with the position of the interface translating relative motion between the pipe or tubing being signal.
The outer surface and inner surface notch targets or to lower the following selection and standardization procedure shall be used incidence angle to obtain good through-wall coverage on unless an alternative is approved by the contracting agency.
This is necessary to ensure surface notches should be as nearly equal as possible and 6 FIG. The procedure in Annex A1 is applicable to pipe and tubing used in nuclear and other special and safety applica- tions. Then the following steps shall be taken, depending upon the nature of the failure.
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