Standard Practice for Conventional Pulse-Echo Ultrasonic Testing of Polyethylene Electrofusion Joints

SIGNIFICANCE AND USE
5.1 This practice is intended primarily for the manual ultrasonic scanning of electrofusion joints used in the construction and maintenance of polyethylene piping systems.  
5.2 Polyethylene piping has been used instead of steel alloys in the petrochemical, power, water, gas distribution, and mining industries due to its reliability and resistance to corrosion and erosion.  
5.3 This practice is not intended to provide 100 % joint examination. This practice specifies a minimum scanning grid that represents only a portion of the welded interface. As such, there exists a possibility of omitting flaws. In addition, selected areas of the welded interface may not be accessible. The extent of examination shall be specified in the contractual agreement.  
5.4 The joining process can be subject to a variety of flaws including, but not limited to, lack of fusion, particulate contamination, short-stab depth, inclusions, and voids.  
5.5 Polyethylene material can have a range of acoustic characteristics that make electrofusion joint examination difficult. Polyethylene materials are highly attenuative, which often limits the use of higher ultrasonic frequencies. It also exhibits a natural high frequency filtering effect. An example of the range of acoustic characteristics is provided in Table 1.6 The table notes the wide range of acoustic velocities reported in the literature. This makes it essential that the reference blocks are made from pipes with the same Specification D3350 density cell classification as the electrofusion fitting examined. (A) A range of velocity and attenuation values have been noted in the literature (1-9).  
5.6 Polyethylene is reported to have a shear velocity of 987 m/s. However, due to extremely high attenuation in shear mode (on the order of 5 dB/mm [127 dB/inch] at 2 MHz) no practical examinations can be carried out using shear mode (6).  
5.7 Due to the wide range of applications, joint acceptance criteria for polyethylene pipe are usually ...
SCOPE
1.1 This practice establishes a procedure for ultrasonic testing (UT) of electrofusion joints in polyethylene pipe systems. This practice provides one ultrasonic examination procedure for ultrasonic pulse-echo straight beam contact testing, using straight-beam longitudinal waves introduced by direct contact of the search unit with the material being examined.  
1.2 The practice is intended to be used on polyethylene electrofusion socket (for example, couplings) and saddle (for example, tees) fittings for use on polyethylene pipe ranging in diameters from nominal 0.5 in. to 12 in. [12 mm to 300 mm] with pipe dimension ratios (DR) ranging from 6.3 to 17. Greater and lesser thicknesses and greater and lesser diameters may be tested using this practice if the technique can be demonstrated to provide adequate detection on mockups of the same wall thickness and geometry.  
1.3 This practice does not address ultrasonic examination of butt fusions. Ultrasonic testing of polyethylene butt fusion joints is addressed in Practice E3044/E3044M.
Note 1: The notes in this practice are for information only and shall not be considered part of this practice.
Note 2: This standard references HDPE and MDPE materials for pipe applications defined by Specification D3350.  
1.4 This practice does not specify acceptance criteria. Refer to Specification F1055 and Practice F1290 for destructive acceptance criteria.  
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
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 safet...

General Information

Status
Historical
Publication Date
31-Oct-2018
Technical Committee
Drafting Committee
Current Stage
Ref Project

Relations

Buy Standard

Standard
ASTM E3167/E3167M-18 - Standard Practice for Conventional Pulse-Echo Ultrasonic Testing of Polyethylene Electrofusion Joints
English language
9 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: E3167/E3167M − 18
Standard Practice for
Conventional Pulse-Echo Ultrasonic Testing of Polyethylene
1
Electrofusion Joints
ThisstandardisissuedunderthefixeddesignationE3167/E3167M;thenumberimmediatelyfollowingthedesignationindicatestheyear
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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
1.1 This practice establishes a procedure for ultrasonic
1.7 This international standard was developed in accor-
testing (UT) of electrofusion joints in polyethylene pipe
systems. This practice provides one ultrasonic examination dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
procedure for ultrasonic pulse-echo straight beam contact
testing, using straight-beam longitudinal waves introduced by Development of International Standards, Guides and Recom-
direct contact of the search unit with the material being mendations issued by the World Trade Organization Technical
examined.
Barriers to Trade (TBT) Committee.
1.2 The practice is intended to be used on polyethylene
2. Referenced Documents
electrofusion socket (for example, couplings) and saddle (for
example, tees) fittings for use on polyethylene pipe ranging in
2.1 The following documents form a part of this practice to
diameters from nominal 0.5 in. to 12 in. [12 mm to 300 mm]
the extent specified herein.
with pipe dimension ratios (DR) ranging from 6.3 to 17.
2
2.2 ASTM Standards:
Greater and lesser thicknesses and greater and lesser diameters
D3350 Specification for Polyethylene Plastics Pipe and Fit-
may be tested using this practice if the technique can be
demonstrated to provide adequate detection on mockups of the tings Materials
same wall thickness and geometry. E114 Practice for Ultrasonic Pulse-Echo Straight-Beam
Contact Testing
1.3 This practice does not address ultrasonic examination of
E543 Specification forAgencies Performing Nondestructive
butt fusions. Ultrasonic testing of polyethylene butt fusion
Testing
joints is addressed in Practice E3044/E3044M.
NOTE 1—The notes in this practice are for information only and shall E1316 Terminology for Nondestructive Examinations
not be considered part of this practice.
E3044/E3044M Practice for Ultrasonic Testing of Polyeth-
NOTE 2—This standard references HDPE and MDPE materials for pipe
ylene Butt Fusion Joints
applications defined by Specification D3350.
F412 Terminology Relating to Plastic Piping Systems
1.4 This practice does not specify acceptance criteria. Refer
F1055 Specification for Electrofusion Type Polyethylene
to Specification F1055 and Practice F1290 for destructive
Fittings for Outside Diameter Controlled Polyethylene
acceptance criteria.
and Crosslinked Polyethylene (PEX) Pipe and Tubing
1.5 The values stated in either SI units or inch-pound units
F1290 PracticeforElectrofusionJoiningPolyolefinPipeand
are to be regarded separately as standard. The values stated in
Fittings
each system are not necessarily exact equivalents; therefore, to
3
2.3 ASNT Standards:
ensure conformance with the standard, each system shall be
ASNT Practice SNT-TC-1A Personnel Qualification and
used independently of the other, and values from the two
Certification in Nondestructive Testing
systems shall not be combined.
ANSI/ASNT-CP-189 Standard for Qualification and Certifi-
1.6 This standard does not purport to address all of the
cation of Nondestructive Testing Personnel
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
This practice is under the jurisdiction of ASTM Committee E07 on Nonde- contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
structive Testing and is the direct responsibility of Subcommittee E07.06 on Standards volume information, refer to the standard’s Document Summary page on
Ultrasonic Method. the ASTM website.
3
Current edition approved Nov. 1, 2018. Published December 2018. DOI: AvailablefromAmericanSocietyforNondestructiveTesting(ASNT),P.O.Box
10.1520/E3167_E3167M-18. 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http://www.asnt.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E3167/E3167M − 18
4
2.4
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.