ASTM F2303-03(2021)

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: F2303 − 03 (Reapproved 2021)
Standard Practice for
Selection of Gravity Sewers Suitable for Installation of
Optical Fiber Cable and Conduits
This standard is issued under the fixed designation F2303; 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.
1. Scope 2.2 Other Documents:
NASSCO Standard “Gravity Sanitary Sewer Design and
1.1 This practice specifically addresses the criteria for
Construction,” Manual of Practice No. FD-5, ASCE Rec-
determiningthesuitabilityofgravitysewersforsecondaryuses
ommended Specifications for Sewer Collection System
such as the installation of optical fiber systems.
Rehabilitation
1.1.1 Thispracticeappliestotheprocessofselectinggravity
Sewer Rehabilitation Manual (SRM) produced by the Water
sewers that are appropriate for accepting an optical fiber
Research Center (WRc, Swindon, England)
system as opposed to standards for the installation, operation
and maintenance of such system within sewers.
3. Terminology
1.2 This practice applies to both man accessible and man
3.1 Definitions are in accordance with Terminology F412
inaccessible sewer systems.
and abbreviations are in accordance with Terminology D1600,
1.3 The values stated in inch-pound units are to be regarded
unless otherwise specified.
as standard. No other units of measurement are included in this
3.2 Definitions of Terms Specific to This Standard:
standard.
3.2.1 combined sewers—sewers that carry both wastewater
1.4 This standard does not purport to address all of the
and storm or surface water.
safety concerns, if any, associated with its use. It is the
3.2.2 engineer—the licensed professional designated by the
responsibility of the user of this standard to establish appro-
owner/operator of the sewer system to represent the owner’s/
priate safety, health, and environmental practices and deter-
operator’s interests during the selection process.
mine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accor-
3.2.3 installer—the person(s) or body installing the optical
dance with internationally recognized principles on standard-
fiber system within the sewer.
ization established in the Decision on Principles for the
3.2.4 manholes—vertical shafts to connect intersecting sew-
Development of International Standards, Guides and Recom-
ers to allow transitions in size, alignment and grade and to
mendations issued by the World Trade Organization Technical
allow entry to the sewers for cleaning, inspection, and main-
Barriers to Trade (TBT) Committee.
tenance.
2. Referenced Documents
3.2.5 optical fiber cable—cable formed of many strands of
optical fiber for transmission of data, video, audio, voice, and
2.1 ASTM Standards:
other information.
D543 Practices for Evaluating the Resistance of Plastics to
Chemical Reagents
3.2.6 optical fiber conduit—fully-supported tubes suitably
D1600 Terminology forAbbreviatedTerms Relating to Plas-
affixed to or suitably incorporated into the wall structure of the
tics
sewer.
F412 Terminology Relating to Plastic Piping Systems
3.2.7 optical fiber system—the complete set of installed
optical fiber components including cable, conduit and attach-
This practice is under the jurisdiction ofASTM Committee F36 on Technology
ment components.
and Underground Utilities and is the direct responsibility of Subcommittee F36.10
3.2.8 owner/operator—the person(s) or body charged with
on Optical Fiber Systems within Existing Infrastructure.
Current edition approved May 1, 2021. Published May 2021. Originally
maintenance and operation of the sewer system.
approved in 2003. Last previous edition approved in 2015 as F2303 – 03(2015).
3.2.9 sanitary sewers—sewers that carry wastewater from
DOI: 10.1520/F2303-03R21.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or users to the treatment plant.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3.2.10 service lateral—portion of the sewer system that
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. connects a user to the sewer.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F2303 − 03 (2021)
3.2.11 sewer—buried piping designed to carry wastewater 6.1.3 Requirement for Compatibility—The installer shall
or storm run-off. recommend compatible sewer-cleaning methods to the owner/
operator. Such methods shall be compatible with both the
3.2.12 storm sewers—sewers that carry storm or surface
existing pipeline (material and condition) and with the optical
water away from roadways or structures to waterways.
fibersystem,andshallbeeffectiveinmaintainingtheoperation
of the sewer without compromising the performance of the
4. Summary of Practice
sewer. The installer shall provide written assurance of the
4.1 Optical fiber cable and conduit systems in existing
suitabilityforuseofthesemethodsthroughoutthetermthatthe
sewers shall be designed and installed so that they have a
optical fiber system remains installed in the sewer.
minimal effect on the sewer’s hydraulic performance and no
6.1.4 Requirement to Bypass—Unless otherwise agreed by
effect on their structural integrity. Their design and installation
the owner/operator, the flow in the candidate sewer must be
shall also allow for the safe and efficient operation and
temporarily stopped or fully bypassed prior to inspection to
maintenance of the sewer, and provide for the safe and efficient
allowforacompleteexaminationandevaluationoftheinternal
operation of the optical fiber system. The ultimate success of
pipe circumference.
theinstallationandoperationofopticalfiberandsewersystems
depends upon the proper evaluation and selection of appropri-
6.2 Inspection:
ate sewers. The steps in the process include the following
6.2.1 Televising—The inspection of the sewer system and
items:
appurtenances shall be accomplished by means of a closed
4.1.1 Cleaning,
circuit television system (CCTV) or other equivalent technol-
4.1.2 Inspection and evaluation of the sewers which are
ogy. Records of the inspection in analog or digital format will
candidates for optical fiber cable or conduit installation,
be maintained and forwarded to the system owner/operator in
4.1.3 Selection of sewer route, and
the selection report.
4.1.4 Documentation of cable routing.
6.2.1.1 Visual Quality—The visual quality will be such as to
allow determination of the presence of cracks, separated joints,
5. Significance and Use
grease, deposits, sags, high water marks, infiltration, corrosion,
5.1 This practice is intended to assist engineers and sewer and root intrusion.
owner/operators in determining the suitability of sewers for a
6.2.1.2 Distance Recording—The distance from the starting
secondary use as hosts for optical fiber cables and conduits. It
point of each inspection run must be designated by a specific
must be kept in mind that the primary use of the sewers is to
reference (for example, middle of manhole) acceptable to the
carrywastewaterorstormwater,orboth.Anysecondaryuseof
owner/operator.
the system shall not significantly impair the primary use. It is
6.2.1.3 Acceptability of Digital Optical Scanning (New
up to the engineer to decide upon any exceptions that may be
Technology)—If acceptable to the owner, digital optical scan-
involved in the selection process.
ning may be substituted for CCTV.The requirement for degree
of resolution and recording of data remains the same as for
5.2 Before the selection procedure begins, the installer must
CCTV methods.
have explicit authorization from the owner/operator allowing
6.2.1.4 ReplicableSystemAssessmentMethod—Themethod
an evaluation to be conducted for the installation of optical
used to document the presence and severity of sewer faults
fiber cables or conduits within their sewer system.
shall be replicable. Unless otherwise specified by the owner/
5.3 Engineers and owners should also be cognizant of how
operator, a standard fault coding system such as the WRc
theinstallationofopticalfibercableorconduitswillimpactthe
Standard Fault Code (or equivalent) may be used to satisfy this
futureoperational,maintenance,andrehabilitationneedsofthe
criterion. The system selected should be capable of
sewers.
documenting, at a minimum, the presence and severity of the
following types of faults: longitudinal cracks, radial cracks,
6. Sewer Selection Procedure
breaks, gapped joints, damaged seals, infiltration/inflow, sags,
6.1 Cleaning and Flow Bypass:
levels of corrosion, out-of-round pipe, and uneven slopes.
6.1.1 Requirement to Clean—Prior to selection of a candi-
6.2.1.5 Requirement for Trained Professional—The inspec-
date sewer, the sewer must be thoroughly cleaned to allow for
tion operator shall be a trained individual with suitable
proper inspection and evaluation according to the selection
professional qualifications (for example, NASSCO certifica-
criteria outlined below. The National Association of Sewer
tion) to provide a qualified inspection opinion as to fault
Services Companies (NASSCO) provides a helpful standard
coding.
(NASSCO Standard).Thiscleaningprocessshallbeperformed
6.3 Sewer Selection Criteria:
with the equipment recommended by the optical fiber installer
as being compatible (see 6.1.3). The cleaning process then 6.3.1 The data from the inspection and evaluation should be
serves as a test of the effectiveness of the cleaning equipment used to identify the sewer sections and manholes suitable for
as well as allowing the inspection of the integrity of the sewer. installation o
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