ASTM F2550-13(2018)
(Practice)Standard Practice for Locating Leaks in Sewer Pipes By Measuring the Variation of Electric Current Flow Through the Pipe Wall (Withdrawn 2022)
Standard Practice for Locating Leaks in Sewer Pipes By Measuring the Variation of Electric Current Flow Through the Pipe Wall (Withdrawn 2022)
SIGNIFICANCE AND USE
3.1 The testing of sewers for leaks is a regular practice necessary for the maintenance and optimal performance of sewer collection systems so remedial action can be prioritized, designed, and carried out to reduce infiltration and exfiltration.
3.2 This practice serves as a means to detect and locate all types of pipe defects that are potential sources of water leaks either into or out of electrically non-conducting pipes. Leaking joints and defective service connections are detected that often may not show as a defect when viewed from inside the pipe. The scan data may be processed and analyzed to provide some information on the size and type of pipe defect. (8.4.1)
3.3 This practice applies to mainline and lateral gravity flow storm sewers, sanitary sewers, and combined sewers fabricated from electrically non-conducting material with diameters between 3 and 60 in. (75 and 1500 mm). The pipes must be free of obstructions that prevent the probe passing through the pipe.
SCOPE
1.1 This practice covers procedures for measuring the variation of electric current flow to detect and locate potential pipe leaks in pipes fabricated from electrically nonconductive materials such as brick, clay, concrete, and plastic pipes (that is, reinforced and non-reinforced). The method uses the variation of electric current flow through the pipe wall to locate defects that are potential water leakage paths either into or out of the pipe.
1.2 This practice applies to mainline and lateral gravity flow storm sewers, sanitary sewers, and combined sewers with diameters between 3 and 60 in. (75 and 1500 mm). The pipes must be free of obstructions that prevent the probe passing through the pipe.
1.3 The scanning process requires access to sewers, filling sewers, and operations along roadways that are safety hazards. This standard does not describe the hazards likely to be encountered or the safety procedures that must be carried out when operating in these hazardous environments. (7.1.3) There are no safety hazards specifically associated with the use of an electro-scan apparatus that complies with the specifications provided in this standard. (6.7 and 6.10.)
1.4 The measurement of the variation of electric current requires the insertion of various items into a sewer. There is always a risk that due to unknown structural conditions in the sewer such items may become lodged in the pipe or may cause the state of a sewer in poor structural condition to further deteriorate. This standard does not describe methods to assess the structural risk of a sewer.
1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
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, health, and environmental practices and to determine the applicability of regulatory limitations prior to use.
1.7 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.
WITHDRAWN RATIONALE
This practice covers procedures for measuring the variation of electric current flow to detect and locate potential pipe leaks in pipes fabricated from electrically nonconductive materials such as brick, clay, concrete, and plastic pipes (that is, reinforced and non-reinforced). The method uses the variation of electric current flow through the pipe wall to locate defects that are potential water leakage paths either into or out of the pipe.
Formerly under the jurisdiction of Committee F36 on...
General Information
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:F2550 −13 (Reapproved 2018)
Standard Practice for
Locating Leaks in Sewer Pipes By Measuring the Variation
1
of Electric Current Flow Through the Pipe Wall
This standard is issued under the fixed designation F2550; 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 (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
Infiltration of groundwater into a sewer through defects in the pipe can considerably increase the
operation and capital costs of a sewer system. Exfiltration of sewage out of a sewer pipe may cause
degradation of aquifers and shoreline waters.Accurate location, measurement, and characterization of
all potential pipe leak defects are essential inputs for cost-effective design, testing, and certification of
pipe repairs, renewal, and new construction. While commonly used sewer leak assessment methods,
such as air and water pressure testing, represent cost effective methods to provide overall Pass/Fail
pipe assessments, their inability to provide accurate location and size of leaks, particularly at
individual joints and service connection, limit their use in remediation and rehabilitation decision
support.
1. Scope always a risk that due to unknown structural conditions in the
sewer such items may become lodged in the pipe or may cause
1.1 This practice covers procedures for measuring the varia-
the state of a sewer in poor structural condition to further
tion of electric current flow to detect and locate potential pipe
deteriorate. This standard does not describe methods to assess
leaks in pipes fabricated from electrically nonconductive
the structural risk of a sewer.
materials such as brick, clay, concrete, and plastic pipes (that
is, reinforced and non-reinforced). The method uses the varia-
1.5 The values stated in inch-pound units are to be regarded
tion of electric current flow through the pipe wall to locate
as standard. The values given in parentheses are mathematical
defects that are potential water leakage paths either into or out
conversions to SI units that are provided for information only
of the pipe.
and are not considered standard.
1.2 This practice applies to mainline and lateral gravity flow
1.6 This standard does not purport to address all of the
storm sewers, sanitary sewers, and combined sewers with
safety concerns, if any, associated with its use. It is the
diameters between 3 and 60 in. (75 and 1500 mm). The pipes
responsibility of the user of this standard to establish appro-
must be free of obstructions that prevent the probe passing
priate safety, health, and environmental practices and to
through the pipe.
determine the applicability of regulatory limitations prior to
1.3 The scanning process requires access to sewers, filling
use.
sewers, and operations along roadways that are safety hazards.
1.7 This international standard was developed in accor-
This standard does not describe the hazards likely to be
dance with internationally recognized principles on standard-
encountered or the safety procedures that must be carried out
ization established in the Decision on Principles for the
when operating in these hazardous environments. (7.1.3)There
are no safety hazards specifically associated with the use of an Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
electro-scan apparatus that complies with the specifications
provided in this standard. (6.7 and 6.10.) Barriers to Trade (TBT) Committee.
1.4 The measurement of the variation of electric current
2. Terminology
requires the insertion of various items into a sewer. There is
2.1 Definitions of Terms Specific to This Standard:
1
This practice is under the jurisdiction ofASTM Committee F36 on Technology
2.1.1 lateral, n—sewer pipe connecting the common sewer
and Underground Utilities and is the direct responsibility of Subcommittee F36.20
collection system to the user.
on Inspection and Renewal of Water and Wastewater Infrastructure.
Current edition approved Aug. 1, 2018. Published August 2018. Originally
2.1.2 mainline, n—pipe that is part of the common sewer
approved in 2006. Last previous edition approved in 2013 as F2550–13. DOI:
10.1520/F2550-13R18. collection system.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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F2550−13 (2018)
2.1.3 maintenance hole, n—(MH) vertical shafts intersect- 4.1.3 Locationandexposureofallmaintenanceholes(MH);
ing a sewer that allows entry to the sewer for cleaning,
4.1.4 MH numbering system for all areas of the project and
insp
...
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