Designation:F2350−04(Reapproved2010)StandardPracticeforSelectionofNaturalGasPipelinesSuitableforInstallationofOpticalFiberSystems1ThisstandardisissuedunderthefixeddesignationF2350;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticespecificallyaddressesthecriteriafordeterminingthesuitabilityofnaturalgaspipelinesforuseasconduitsforopticalfibercablesystems,asopposedtostan-dardsfortheoperationandmaintenanceofsuchasystem.1.2Thispracticedoesnotapplytonaturalgastransmissionlines.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D1600TerminologyforAbbreviatedTermsRelatingtoPlas-ticsF412TerminologyRelatingtoPlasticPipingSystems2.2CodeofFederalRegulations(CFR)References:3CFR49,Part192TransportationofNaturalorOtherGasbyPipeline,MinimumFederalSafetyStandards3.Terminology3.1DefinitionsareinaccordancewithTerminologyF412andabbreviationsareinaccordancewithTerminologyD1600,unlessotherwisespecified.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1distributionline—apipelineotherthanagatheringortransmissionline.3.2.2gas—naturalgas.3.2.3high-pressuredistributionsystem—adistributionsys-teminwhichthegaspressureinthemainishigherthanthepressurenormallyprovidedtothecustomer(thatis,higherthanutilizationpressure).3.2.4installer—theperson(s)orbodyinstallingtheopticalfibersystemwithinthenaturalgaspipeline.3.2.5localdistributioncompany(LDC)—theowner/operatorofthenaturalgaspipingsystemwithinaspecificgeographicarea.3.2.6low-pressuredistributionsystem—adistributionsys-teminwhichthegaspressureinthemainissubstantiallythesameasthepressureprov...