ASTM A578/A578M-96(2001)
(Specification)Standard Specification for Straight-Beam Ultrasonic Examination of Plain and Clad Steel Plates for Special Applications
Standard Specification for Straight-Beam Ultrasonic Examination of Plain and Clad Steel Plates for Special Applications
SCOPE
1.1 This specification covers the procedure and acceptance standards for straight-beam, pulse-echo, ultrasonic examination of rolled carbon and alloy plain and clad steel plates, 3/8 in. [10 mm] in thickness and over, for special applications. The method will detect internal discontinuities parallel to the rolled surfaces. Three levels of acceptance standards are provided. Supplementary requirements are provided for examination of clad plate and for alternative procedures.
1.2 Individuals performing examinations in accordance with this specification shall be qualified and certified in accordance with the requirements of the latest edition of ASNT SNT-TC-1A or an equivalent accepted standard. An equivalent standard is one which covers the qualification and certification of ultrasonic nondestructive examination candidates and which is acceptable to the purchaser.
1.3 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.
1.4 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.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: A 578/A578M – 96 (Reapproved 2001)
Standard Specification for
Straight-Beam Ultrasonic Examination of Plain and Clad
1
Steel Plates for Special Applications
This standard is issued under the fixed designationA578/A578M; 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.
This standard has been approved for use by agencies of the Department of Defense.
3
1. Scope Steel-Clad Plate, Sheet, and Strip
2 A 264 Specification for Stainless Chromium-Nickel Steel-
1.1 This specification covers the procedure and acceptance
3
Clad Plate, Sheet, and Strip
standards for straight-beam, pulse-echo, ultrasonic examina-
A 265 Specification for Nickel and Nickel-BaseAlloy-Clad
3
tionofrolledcarbonandalloyplainandcladsteelplates, ⁄8 in.
3
Steel Plate
[10 mm] in thickness and over, for special applications. The
2.2 ANSI Standard:
method will detect internal discontinuities parallel to the rolled
4
B 46.1 Surface Texture
surfaces. Three levels of acceptance standards are provided.
2.3 ASNT Standard:
Supplementary requirements are provided for examination of
5
SNT-TC-1A
clad plate and for alternative procedures.
1.2 Individualsperformingexaminationsinaccordancewith
3. Ordering Information
this specification shall be qualified and certified in accordance
3.1 The inquiry and order shall indicate the following:
with the requirements of the latest edition of ASNT SNT-
3.1.1 Acceptance level requirements (Sections 7, 8, and 9).
TC-1A or an equivalent accepted standard. An equivalent
Acceptance Level B shall apply unless otherwise agreed to by
standard is one which covers the qualification and certification
purchaser and manufacturer.
of ultrasonic nondestructive examination candidates and which
3.1.2 Any additions to the provisions of this specification as
is acceptable to the purchaser.
prescribed in 5.2, 13.1, and Section 10.
1.3 The values stated in either inch-pound units or SI units
3.1.3 Supplementary requirements, if any.
are to be regarded separately as standard. Within the text, the
SI units are shown in brackets. The values stated in each
4. Apparatus
system are not exact equivalents; therefore, each system must
4.1 The amplitude linearity shall be checked by positioning
be used independently of the other. Combining values from the
the transducer over the depth resolution notch in the IIW or
two systems may result in nonconformance with the specifi-
similar block so that the signal from the notch is approximately
cation.
30 % of the screen height, and the signal from one of the back
1.4 This standard does not purport to address all of the
surfaces is approximately 60 % of the screen height (two times
safety concerns, if any, associated with its use. It is the
the height of the signal from the notch).Acurve is then plotted
responsibility of the user of this standard to establish appro-
showing the deviations from the above established 2:1 ratio
priate safety and health practices and determine the applica-
that occurs as the amplitude of the signal from the notch is
bility of regulatory limitations prior to use.
raised in increments of one scale division until the back
2. Referenced Documents reflection signal reaches full scale, and then is lowered in
increments of one scale division until the notch signal reaches
2.1 ASTM Standards:
one scale division. At each increment the ratio of the two
A 263 Specification for Corrosion-Resisting Chromium
signals is determined. The ratios are plotted on the graph at the
position corresponding to the larger signal. Between the limits
of 20 and 80 % of the screen height, the ratio shall be within
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
3
A01.11 on Steel Plates for Boilers and Pressure Vessels. Annual Book of ASTM Standards, Vol 01.03.
4
Current edition approved March 10, 2001. Published November 1996. Originally Available from American National Standards Institute, 11 W. 42nd St., 13th
published as A 578 – 67 T. Last previous edition A 578/A 578M – 92. floor, New York, NY 10036.
2 5
For ASME Boiler and Pressure Vessel Code applications, see related Specifi- Available from American Society for Nondestructive Testing, 1711 Arlingate
cation SA-578/SA-578M in Section II of that Code. Plaza, Columbus, OH 43228.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
A 578/A578M – 96 (2001)
NOTE 1—Indications occurring midway between the initial pulse an
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.