1、Designation: F2350 04 (Reapproved 2010)Standard Practice forSelection of Natural Gas Pipelines Suitable for Installationof Optical Fiber Systems1This standard is issued under the fixed designation F2350; the number immediately following the designation indicates the year oforiginal adoption or, in t
2、he case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice specifically addresses the criteria fordetermining the suitability of n
3、atural gas pipelines for use asconduits for optical fiber cable systems, as opposed to stan-dards for the operation and maintenance of such a system.1.2 This practice does not apply to natural gas transmissionlines.1.3 This standard does not purport to address all of thesafety concerns, if any, asso
4、ciated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D1600 Terminology forAbbreviated Terms Relating to Plas-t
5、icsF412 Terminology Relating to Plastic Piping Systems2.2 Code of Federal Regulations (CFR) References:3CFR 49, Part 192 Transportation of Natural or Other Gas byPipeline, Minimum Federal Safety Standards3. Terminology3.1 Definitions are in accordance with Terminology F412and abbreviations are in ac
6、cordance with Terminology D1600,unless otherwise specified.3.2 Definitions of Terms Specific to This Standard:3.2.1 distribution linea pipeline other than a gathering ortransmission line.3.2.2 gasnatural gas.3.2.3 high-pressure distribution systema distribution sys-tem in which the gas pressure in t
7、he main is higher than thepressure normally provided to the customer (that is, higher thanutilization pressure).3.2.4 installerthe person(s) or body installing the opticalfiber system within the natural gas pipeline.3.2.5 local distribution company (LDC)the owner/operator of the natural gas piping s
8、ystem within a specificgeographic area.3.2.6 low-pressure distribution systema distribution sys-tem in which the gas pressure in the main is substantially thesame as the pressure provided to the customer.3.2.7 maina distribution line that serves as a commonsource of supply for more than one service
9、line.3.2.8 maximum actual operating pressurethe maximumpressure that occurs during normal operations over a period ofone year.3.2.9 maximum allowable operating pressure (MAOP)themaximum pressure at which a pipeline or segment of a pipelinemay be operated under CFR 49, Part 192.3.2.10 optical fiber c
10、ablea cable formed of one or morestrands of optical fiber for transmission of data, video, audio,voice, and other information.3.2.11 optical fiber systema group of components thatcomprises the elements necessary to enable Optical FiberCable to be installed, maintained, and operated inside a gaspipel
11、ine.3.2.12 operatora person who engages in the transporta-tion of gas.3.2.13 pipe (piping)any pipe or tubing used in the trans-portation of gas.3.2.14 pipelineall parts of those physical facilities throughwhich gas moves in transportation, including pipe, valves, andother appurtenance attached to pi
12、pe, compressor units, meter-ing stations, regulator stations, delivery stations, holders, andfabricated assemblies.1This practice is under the jurisdiction of ASTM Committee F36 on Technologyand Underground Utilities and is the direct responsibility of Subcommittee F36.10on Optical Fiber Systems wit
13、hin Existing Infrastructure.Current edition approved May 1, 2010. Published June 2010. Originallyapproved in 2004. Last previous edition approved in 2004 as F2350 04. DOI:10.1520/F2350-04R10.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serv
14、iceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from U.S. Government Printing Office Superintendent of Documents,732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http:/www.access.gpo.gov.Copyrig
15、ht ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesNOTICE: This standard has either been superseded and replaced by a new version or withdrawn.Contact ASTM International (www.astm.org) for the latest information13.2.15 service linea distribution
16、 line that transports gasfrom a common source of supply to a customer meter or theconnection to a customers piping, whichever is farther down-stream.3.2.16 transmission linea pipeline, other than a gatheringline, that: (a) Transports gas from a gathering line or storagefacility to a distribution cen
17、ter, storage facility, or large volumecustomer that is not downstream from a distribution center; or(b) Operates at a hoop stress of 20 % or more of SMYS.4. Summary of Practice4.1 The optical fiber systems in existing gas pipelines shallbe designed and installed so that they have a minimal effect on
18、pipeline performance, and current and future gas deliverycapability, and no effect on their structural integrity. Theirdesign and installation shall also allow for the safe and efficientoperation and maintenance of the pipeline, and provide for thesafe and efficient operation of the optical fiber sy
19、stem. The firststep in the evaluation process is an analysis of the capacity ofthe gas piping to confirm available capacity for the installationof an optical fiber system. The ultimate success of theinstallation and operation of both the optical fiber and gaspipeline systems depends upon the proper
20、evaluation andselection of appropriate pipelines. The steps in the selectionprocess include evaluation of the following items:4.1.1 Pipeline integrity and useful life,4.1.2 Standards for installed components,4.1.3 Standards for gas quality,4.1.4 Standards for the safe use of optical fibers in flam-m
21、able atmospheres,4.1.5 Determine franchise and right of way impacts,4.1.6 Installation of the optical fiber system,4.1.6.1 Confirming the pipeline networks capacity,4.1.6.2 Selection of pipeline,4.1.6.3 Determine custody/ownership transfer point,4.1.6.4 Installation of the optical fiber system, and4
22、.1.7 Documentation of cable routing.5. Significance and Use5.1 This practice is intended to assist engineers, LDCs andinstallers in determining the suitability of gas pipelines for asecondary use as carriers for optical fiber systems. It must bekept in mind that the primary use of the gas pipelines
23、is todeliver natural gas to the end customer. Any secondary use ofthe system shall have minimal impact on its primary function.It is up to the engineer to decide upon the order of operationsand any exceptions that may be involved in the selectionprocess.5.2 Before the selection procedure begins, the
24、 LDC musthave developed an explicit agreement authorizing an installerto place optical fiber cables within their piping system.5.3 The relevant LDC engineers should also be cognizant ofhow the installation of optical fiber cable will impact the futuregas deliverability, operation, maintenance, and r
25、ehabilitationneeds of the pipelines to be used as carriers of optical fibersystems.6. Selection of Pipeline6.1 The following is a list of issues and criteria to considerwhen selecting a gas pipeline for use as a carrier of optical fiberconduit or cable, or both:6.1.1 Gas QualityFree or disassociated
26、 hydrogen at highconcentrations in the gas stream may affect optical fibersystems by diffusion through polyethylene components. Theoperator or optical fiber owner should confirm gas quality inrelation to the optical fiber system being used, to ensure thatthere will be no interference from hydrogen.6
27、.1.2 Franchise ImpactsThe LDC operator should con-firm the terms of their franchise agreement to determine if theinsertion of optical fiber systems is permitted under thatagreement. Similarly, easements that are part of a planned routeshould be examined to confirm that they allow the gas operatorto
28、install an optical fiber system.6.1.3 Pipeline CapacityThe operator should conduct anetwork analysis to confirm that any loss of capacity from useof an optical fiber system does not hinder current or near-futurepeak day deliverability to customers, and that any bypassing orsystem pressure reduction
29、required during installation will notaffect that particular seasons gas deliverability.6.1.4 Maximum Operating Pressure of the System andRatings of the Optical Fiber SystemThis confirms that thesystem components or their installation methods do not exceedtheir pressure ratings.6.1.5 Number and Posit
30、ion of ValvesThe ability to installstraight runs may be important for project economics. Know-ing where valves are installed will allow planning to circum-vent the valves, or to reposition them to maximize installationeffectiveness.6.1.6 Number and Position of Elbows and Other FittingsThe optical fi
31、ber system installation may have difficulty navi-gating certain elbows or fittings (especially if there are drips,and so forth). It will be important to identify those fittings forconstruction planning purposes.6.1.7 Method of Attaching Installation FittingsSome op-tical fiber systems may be optimiz
32、ed for a certain gas pipingmaterial. The need for transition, or different fittings will needto be identified, and relevant planning undertaken.6.1.8 Determine Custody/Ownership Transfer PointIssuesAny agreements with installers/owners of an opticalfiber system should clearly define the ownership tr
33、ansfer point;that is, the point at which the facility no longer belongs to theLDC, but to the operator of the optical fiber system. Typicallythis will also be the demarcation of responsibility for operationand maintenance of the optical fiber system.6.1.9 Impact on Pipeline IntegrityAs with any oper
34、ationon or attachment to a gas pipeline system, the impact onshort-and long-term pipeline integrity must be considered.Careful attention should be paid to plastic pipeline made frommaterial that is susceptible to brittle cracking, unprotected steeland older cast-iron pipes.6.1.10 Pipeline Integrity
35、Monitoring RequirementsGaspipelines may be required to be assessed for structural integrityon a periodic basis. The optical fiber system installation shallnot preclude these types of inspections.F2350 04 (2010)27. Keywords7.1 conduits; criteria; installation; natural gas; pipeline;selectionASTM Inte
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37、 their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand sho
38、uld be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Sta
39、ndards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).F2350 04 (2010)3
