Designation:D7230−06(Reapproved2013)StandardGuideforEvaluatingPolymericLiningSystemsforWaterImmersioninCoatingServiceLevelIIISafety-RelatedApplicationsonMetalSubstrates1ThisstandardisissuedunderthefixeddesignationD7230;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguideestablishesproceduresforevaluatingliningsystemtestspecimensundersimulatedoperatingconditions.1.2Liningsystemstobetestedinaccordancewiththisguideareintendedforuseinbothnewconstructionandforrefurbishingexistingsystemsorcomponents.1.3Theliningsystemsevaluatedinaccordancewiththisguideareexpectedtobeappliedtometalsubstratescomprisingwater-wetted(thatis,continuousorintermittentimmersion)surfacesinsystemsthatmayinclude:1.3.1Servicewaterpipingupstreamofsafety-relatedcomponents,1.3.2Servicewaterpumpinternals(drafttube,volutes,anddiffusers),1.3.3Servicewaterheatexchangerchannels,passpartitions,tubesheets,endbells,andcovers,1.3.4Servicewaterstrainers,and1.3.5Refuelingwaterstoragetanksandrefuelcavitywaterstoragetanks.1.4Thisguideanticipatesthattheliningsystemstobetestedincludeliquid-gradeandpaste-gradepolymericmateri-als.Sheettypeliningmaterials,suchasrubber,areexcludedfromthescopeofthisguide.1.5Becauseofthespecializednatureofthesetestsandthedesireinmanycasestosimulatetosomedegreetheexpectedserviceenvironment,thecreationofastandardpracticeisnotpractical.Thisstandardgivesguidanceinsettinguptestsandspecifiestestproceduresandreportingrequirementsthatcanbefollowedevenwithdifferingmaterials,specimenpreparationmethods,andtestfacilities.1.6Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwi...
