ASTM E2223-02
(Practice)Standard Practice for Examination of Seamless, Gas-Filled, Steel Pressure Vessels Using Angle Beam Ultrasonics
Standard Practice for Examination of Seamless, Gas-Filled, Steel Pressure Vessels Using Angle Beam Ultrasonics
SIGNIFICANCE AND USE
The purpose of this practice is to provide a procedure for locating, detecting and estimating the relevance of longitudinally oriented crack-like discontinuities which have been previously indicated by AE examination.
This practice may be used for a pressure vessel that is situated in such a way as to limit access to the vessel’wall. Typical examples include tube trailers and gas tube railroad cars. Since the pressure vessels are stacked horizontally in a frame, with limited space between them, the circumferential location of a discontinuity may be a distance away from the search unit (several skip distances).
This practice has been shown to be effective for cylinders between 9 in. (229 mm) and 24 in. (610 mm) in diameter and wall thicknesses between 1/4 in. (6.4 mm) to 1 in. (26 mm) with discontinuities that are oriented longitudinally in pressure vessel sidewall.
To be reliably detected by the procedure in this practice, a significant part of the reflecting surface must be transverse to the beam direction.
Evaluation of possible discontinuity in the end faces indicated by AE is not covered by this practice.
SCOPE
1.1 This practice describes a contact angle-beam shear wave ultrasonic technique to detect and locate the circumferential position of longitudinally oriented discontinuities and to compare the amplitude of the indication from such discontinuities to that of a specified reference notch. This practice does not address examination of the vessel ends. The basic principles of contact angle-beam examination can be found in Practice E 587. Application to pipe and tubing, including the use of notches for standardization, is described in Practice E 213.
1.2 This practice is appropriate for the ultrasonic examination of cylindrical sections of gas-filled, seamless, steel pressure vessels such as those used for the storage and transportation of pressurized gasses. It is applicable to both isolated vessels and those in assemblies.
1.3 The practice is intended to be used following an Acoustic Emission (AE) examination of stacked seamless gaseous pressure vessels (with limited surface scanning area) described in Test Method E 1419.
1.4 This practice does not establish acceptance criteria. These are determined by the reference notch dimensions, which must be specified by the using parties.
Note 1—Background information relating to the technical requirements of this practice can be found in the references sited in Test Method E 1419, Appendix X1.
1.5 Dimensional values stated in in-pound units are regarded as standard; SI equivalents, in parentheses may be approximate.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. 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.
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Designation:E2223–02
Standard Practice for
Examination of Seamless, Gas-Filled, Steel Pressure
Vessels Using Angle Beam Ultrasonics
This standard is issued under the fixed designation E 2223; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
1.1 Thispracticedescribesacontactangle-beamshearwave 2.1 ASTM Standards:
ultrasonic technique to detect and locate the circumferential E 213 Practice for Ultrasonic Examination of Metal Pipe
position of longitudinally oriented discontinuities and to com- and Tubing
pare the amplitude of the indication from such discontinuities E 543 Practice for Agencies Performing Nondestructive
to that of a specified reference notch. This practice does not Testing
address examination of the vessel ends. The basic principles of E 587 Practice for Ultrasonic Angle-Beam Examination by
contact angle-beam examination can be found in Practice the Contact Method
E 587. Application to pipe and tubing, including the use of E 1316 Terminology for Nondestructive Examinations
notches for standardization, is described in Practice E 213. E 1419 Test Method for Examination of Seamless, Gas-
1.2 This practice is appropriate for the ultrasonic examina- Filled, Pressure Vessels Using Acoustic Emission
tion of cylindrical sections of gas-filled, seamless, steel pres- 2.2 ASNT Documents:
sure vessels such as those used for the storage and transporta- Recommended Practice SNT-TC-1A for Personnel Qualifi-
tion of pressurized gasses. It is applicable to both isolated cation and Certification
vessels and those in assemblies. ANSI/ASNT-CP-189 Standard for Qualification and Certi-
1.3 The practice is intended to be used following an fication of Nondestructive Testing Personnel
Acoustic Emission (AE) examination of stacked seamless 2.3 AIA Document:
gaseous pressure vessels (with limited surface scanning area) NAS-410 Nondestructive Testing Personnel Qualification
described in Test Method E 1419. and Certification
1.4 This practice does not establish acceptance criteria.
3. Terminology
These are determined by the reference notch dimensions,
3.1 Terminology relating to this practice for angle-beam
which must be specified by the using parties.
shear wave ultrasonic examination is defined in Terminology
NOTE 1—Background information relating to the technical require-
E 1316.
ments of this practice can be found in the references sited in Test Method
E 1419, Appendix X1.
4. Summary of Methodology
1.5 Dimensional values stated in in-pound units are re-
4.1 An ultrasonic pulse-echo contact angle-beam, shear
garded as standard; SI equivalents, in parentheses may be
wave technique with the beam directed circumferentially is
approximate.
used to locate surface breaking discontinuities in the cylindri-
1.6 This standard does not purport to address all of the
cal wall of a pressure vessel. The amplitude of the reflected
safety concerns, if any, associated with its use. It is the
signal from the discontinuity is compared to that of a known
responsibility of the user of this standard to establish appro-
reference notch. Scanning is performed in both clockwise and
priate safety and health practices and determine the applica-
counter clockwise directions to detect and confirm the position
bility of regulatory limitations prior to use.
of the discontinuity identified in the AE examination report.
Annual Book of ASTM Standards, Vol 03.03.
1 3
This practice is under the jurisdiction of ASTM Committee E07 on Nonde- Available from the American Society for Nondestructive Testing, 1711 Arlin-
structive Testing and are the direct responsibility of Subcommittee E07.06 on gate Lane, P.O. Box 28518, Columbus, OH 43228-0518.
Ultrasonic Method. Available from Aerospace Industries Association of America, Inc., 1250 Eye
Current edition approved July 10, 2002. Published September 2002. St., NW, Washington, DC 20005.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
E2223–02
5. Significance and Use be defined in accordance with Section 8 and by the regulatory
authority or stated in the contractual agreement.
5.1 Thepurposeofthispracticeistoprovideaprocedurefor
6.5 Reexamination of Repaired/Reworked Items
locating, detecting and estimating the relevance of longitudi-
6.5.1 Reexamination of repaired/reworked items is not ad-
nally oriented crack-like discontinuities which have been
dressed in this standard and if required shall be specified by the
previously indicated by AE examination.
regulatory authority, or stated in the contractual agreement, or
5.2 This practice may be used for a pressure vessel that is
both.
situated in such a way as to limit access to the vessel’s wall.
Typical examples include tube trailers and gas tube railroad
7. Apparatus
cars. Since the pressure vessels are stacked horizontally in a
frame, with limited space between them, the circumferential
7.1 Ultrasonicpulse-echoinstrumentationshallhaveamini-
location of a discontinuity may be a distance away from the 1
mum capacity of examining at center frequencies from 2 ⁄4 to
search unit (several skip distances).
5 MHz. The instrument, search units and related equipment
5.3 This practice has been shown to be effective for cylin-
shall be cable of displaying the peak amplitude of the indica-
ders between 9 in. (229 mm) and 24 in. (610 mm) in diameter
tion from the reference notch in the standardization ring, as
and wall thicknesses between ⁄4 in. (6.4 mm) to 1 in. (26 mm)
described in Section 8, and locating its circumferential position
with discontinuities that are oriented longitudinally in pressure
over the full sweep range required for coverage of the vessel to
vessel sidewall.
be examined.
5.4 To be reliably detected by the procedure in this practice,
7.1.1 Each search unit used for this technique shall have the
a significant part of the reflecting surface must be transverse to
appropriate frequency and refracted angle for the material and
the beam direction.
geometry of the pressure vessel that is being examined. The
5.5 Evaluation of possible discontinuity in the end faces
frequency and angle of the search unit is selected during
indicated by AE is not covered by this practice.
standardization and is related to diameter, wall thickness and
the type of steel used for the vessel and corresponding
6. Basis of Application
standardization rings.
7.1.1.1 The angle and frequency of the search unit to be
6.1 Personnel Qualification
used shall be determined by using different search units on a
6.1.1 If specified in the contractual agreement, personnel
reference ring that represents the examination piece. A search
performing examinations to this standard shall be qualified in
unit which can satisfactorily detect and display the indication
accordance with a nationally recognized NDT personnel quali-
from the notch in the reference ring at the maximum distance
fication practice or standard such as ANSI/ASNT-CP-189,
to be used during the examination shall be selected for setting
SNT-TC-1A, NAS-410, or a similar document and certified by
up the DistanceAmplitude Correction (DAC) curve for exami-
the employer or certifying agency, as applicable. The standard
nation in accordance with 9.3.
used and its applicable revision shall be specified by the
7.1.1.2 Select search units for evaluation from those having
regulatory authority, or stated in the contractual agreement, or
both. frequencies 2 ⁄4 and 5 MHz with refracted angles of 45° to 75°
in steel, and in available commercial sizes. Those producing
6.1.2 Additional Personnel Training
the required sensitivity and DAC response on the appropriate
6.1.2.1 Personnel performing this type of examination shall
reference ring are acceptable. These search units have gener-
have additional training in the following topics.
ally been found satisfactory for the examination of the type of
6.1.3 Construction and manufacturing techniques for seam-
vessels specified in 5.3.
less steel pressure vessels.
7.1.1.3 The search unit shall be comprised of a transducer
6.1.4 Familiarity with the types of discontinuities that may
mountedonaplasticwedgethatisdesignedtohavecontinuous
occur in this type of pressure vessels.
acoustic coupling between search unit and the pressure vessel
6.2 Qualification of Nondestructive Agencies
wall.
6.2.1 If specified in the contractual agreement, NDT agen-
cies shall be qualified and evaluated as described in the
NOTE 2—This is usually accomplished with a wedge that is radiused to
applicable Sections 5 through 9 of Practice E 543. The appli-
match the
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