PPITR04-2024 PPI HSB熱塑性管道材料或管道的靜水壓設(shè)計(jì)基礎(chǔ)（HDB）、靜水壓設(shè)計(jì)應(yīng)力（HDS）、強(qiáng)度設(shè)計(jì)基礎(chǔ)（SDB）、壓力設(shè)計(jì)基礎(chǔ)（PDB）和最低要求強(qiáng)度（MRS）等級(jí)清單

PPITR-4HDB/HDS/SDB/PDB/MRS

ListedMaterials

May1,2024

PPIHSBListingofHydrostaticDesignBasis(HDB),HydrostaticDesignStress(HDS),

StrengthDesignBasis(SDB),PressureDesignBasis(PDB)and

MinimumRequiredStrength(MRS)RatingsForThermoplasticPipingMaterialsorPipe

PAGE

10

:

NUMPAGES

57

TABLEOFCONTENTS

FOREWORD 4

SUMMARYOFCHANGES 5

NOTESTOTHEREADER 6

ACRONYMS 10

DEFINITIONS 11

COMMONPLASTICSABBREVIATIONS 15

SECTIONI 16

PARTA-MATERIALSEVALUATEDFROMDATADEVELOPEDONEXTRUDEDPIPESPECIMENS(HDB)-THESEMATERIALSMAYBEUSEDFOREITHEREXTRUDEDPIPEORMOLDING

APPLICATIONS 16

TABLEI.A.1–PVC1120MATERIALS 18

TABLEI.A.3–CPVC4120MATERIALS 18

TABLEI.A.3–CPVC4122MATERIALS 21

TABLEI.A.3–CPVC23447-22MATERIALS 21

TABLEI.A.3–CPVC23448-20MATERIALS 22

TABLEI.A.3–CPVC23448-22MATERIALS 22

TABLEI.A.4–PE2708MATERIALS 22

TABLEI.A.8–PE3608MATERIALS 25

TABLEI.A.13–PE4710MATERIALS 25

TABLEI.A.14A–PEX0006MATERIALS 37

TABLEI.A.14A.2–PEX0306MATERIALS 37

TABLEI.A.14B.1–PEX1006MATERIALS 38

TABLEI.A.14C.1–PEX3006MATERIALS 38

TABLEI.A.14C.2–PEX3206MATERIALS 39

TABLEI.A.14C.2–PEX3306MATERIALS 39

TABLEI.A.14D.1–PEX5006MATERIALS 40

TABLEI.A.14D.2–PEX5106MATERIALS 42

TABLEI.A.14D.3–PEX5206MATERIALS 43

TABLEI.A.14D.4–PEX5306MATERIALS 43

TABLEI.A.14D.5–PEX5308MATERIALS 44

TABLEI.A.18-PA42316MATERIALS 44

TABLEI.A.20-PVDF2020MATERIALS 45

PARTB-MATERIALSEVALUATEDFROMDATADEVELOPEDONMOLDEDPIPESPECIMENS(HDB),EXTRUDEDPIPE(HDB),ORMOLDEDPLAQUES(SDB)-THESEMATERIALSMAYBEUSEDFORMOLDINGAPPLICATIONSONLY 46

TABLEI.B.1–MOLDEDSPECIMENS 47

TABLEI.B.2–EXTRUDEDPIPESPECIMENS 47

SECTIONII 48

PIPESWITHPPIRECOMMENDEDPRESSUREDESIGNBASIS(PDB)ANDMAXIMUMPRESSURERATINGS(PR)ESTABLISHEDINACCORDANCEWITHPPITR-3(ASTMD2837) 48

TABLEII.A.1–PDB(MULTILAYER) 49

SECTIONIII 50

MATERIALSWITHPPIRECOMMENDEDMINIMUMREQUIREDSTRENGTH(MRS)ANDCATEGORIZEDREQUIREDSTRENGTH(CRS)ESTABLISHEDINACCORDANCEWITHISO9080AND

ISO12162 50

TABLEIII.A.1-PE80MATERIALS 51

TABLEIII.A.2-PE100MATERIALS 52

TABLEIII.A.3-PE112MATERIALS 54

TABLEIII.A.6–PA12180MATERIALS 55

TABLEIII.A.7-PP112MATERIALS 55

TABLEIII.A.9–CRS(θ,t)–POLYPROPYLENEMATERIALS 55

APPENDIXA–ExampleRequestLettersforaPPIHSBlisting 56

APPENDIXD–ListofManufacturerContacts 57

FOREWORD

Thistechnicalreportwasdevelopedandpublishedwiththetechnicalhelpofthemembersofthe(PlasticsPipeInstitute,Inc.)HydrostaticStressBoard(PPIHSB).Themembershaveshowntheirinterestinqualityproductsbyassistingindependentstandards-makinganduserorganizationsinthedevelopmentofstandards,andalsobydevelopingreportsonanindustry-widebasistohelpengineers,codeofficials,specifyinggroups,andusers.

ThisreportliststhermoplasticpipingmaterialswithaPPIHSBrecommendedHydrostaticDesignBasis(HDB),StrengthDesignBasis(SDB),PressureDesignBasis(PDB)orMinimumRequiredStrength(MRS)ratingforthermoplasticpipingmaterialsorpipe.TheselistingshavebeenestablishedinaccordancewithPPITR-3,"PoliciesandProceduresforDevelopingHydrostaticDesignBasis(HDB),StrengthDesignBasis(SDB),PressureDesignBasis(PDB)orMinimumRequiredStrength(MRS)RatingsforThermoplasticPipingMaterialsorPipe”.ReasonableeffortsaremadebythePPIHSBtoensurethattherequiredmethods,policies,standardsandprocedureshavebeenfollowedandthatthepresentedtestdataarereliable.

ThisreportwaspreparedbythePPIHSBasaservicetotheindustry.Theinformationinthisreportisofferedingoodfaithandbelievedtobeaccurateatthetimeofitspreparationbutisoffered“asis”withoutanyexpressorimpliedwarranty,includingWARRANTIESOFMERCHANTABILITYANDFITNESSFORAPARTICULARPURPOSE.Eachproduct

manufacturerthatlistscompositionswiththePPIHSBdoessovoluntarilyandwiththeexpressagreementthatPPIassumesnoliabilityinregardtothelists,andthatitwillholdPPIharmlessfromanyclaimsorliabilityinconnectionwithitslistedpipecompositions.

Additionalinformationmaybeneededinsomeareas,especiallywithregardtounusualorspecialapplications.Consultthemanufacturerormaterialsupplierformoredetailedinformation.PPIdoesnotendorsetheproprietaryproductsorprocessesofanymanufacturer,andassumesnoresponsibilityforcompliancewithapplicablelawsandregulations.

Questions,comments,andproblemsofinterpretationshouldbereferredtothePPIHSBChair,PlasticsPipeInstitute,105DeckerCourt,Suite825,Irving,TX75062.Copiesofthisreport,aswellasotherpublications,areavailablefromthePPIwebsite:

.

ThisreportwasfirstpublishedinSeptember1967.ThisreportwasupdatedMay1,2024.

?Copyright,ThePlasticsPipeInstitute,Inc.2024

SUMMARYOFCHANGES

2024

NOTESTOREADER

HSBTG4-0214:HarmonizationofthePPITR-3andPPITR-4NotestoReader.

DEFINITIONS

HSBTG25-0219:Theterms“commerciallyproducedpipe”and“l(fā)aboratoryextrudedpipe”weredefined.PPITR-3/2023usesbothtermsbuttheactualdefinitionwasnotincluded.PPITR-3/2024includestheactualdefinitions.Bothtermsarenow

includedinthePPITR-4/2024DEFINITIONsection.

Document

Editorial:Includedfootnote1,thatlastappearedinPPITR-4/2011,forSection1PartAlistingtables.

2021

NOTESTOREADER

Editorialrevision:Correctedtypo“insure”to“ensure”.Thisharmonizeswiththeeditorialrevisionmadeto

PPITR-3/2020.

PPILogo

Editorialrevision:UpdatedtothePPIlogotothelatestversion.

Tableheaders

Editorialrevision:AddedtableheaderstotheTableofContents.

AppendixB

Editorialrevision:ThisappendixwasformerlylabelledD.ItisrelabeledtoAppendixBasPPITR-3doesnothaveanAppendixBorC.

2020

FOREWORD

Editorialrevisiontobringup-to-datewithrequiredPPIlanguage.

Document

Editorialrevisionof“ChairmanoftheHSB”to“PPIHSBChair”.

TABLEOFCONTENTS

EditorialrevisionofAppendixA:Notedthatthemanufacturercontactinformationarenowavailableonline.Editorialrevision:removedmentionofPPImembership.

DEFINITIONS

Editorialrevision:Formattedthewords/termsanddefinitions,thatareinPPITR-3,inatable.

Sectionintroduction

Editorialrevision:TheTableofContentsincludesamentionofSectionIPartA(extrudedpipespecimens)andPartB(moldedpipespecimens).AddedasectionintroductionforPartBasthereareproductsnowlistedinPPITR-4.

DocumentTitle

Editorialrevision:AddedCategorizedRequiredStrength(CRS)tothedocumenttitle.

NOTESTOTHEREADER

SOMERULESANDCONDITIONS

ProcessingTechniques:ItisstressedthatthesepoliciesandproceduresarefordevelopmentofHDB/HDS/PDB/MRS/CRS/SDBrecommendedratingsissuedbythePPIHSBforconditionsequivalenttothoseunderwhichthetestdatawereobtainedfromgoodqualityextrudedpipesormachinedorinjectionmoldedspecimens.TheseHDB/HDS/PDB/MRS/CRS/SDBrecommendedratingsmayormaynotbevalidforproductsmadebydifferingprocessingtechniques.

DefinitionsandAcronyms:DefinitionsandAcronymsareshowninthenextsection.Theterminologyofthisreportisinaccordancewiththedefinitionsgiveninstandards:ASTMD883,"StandardDefinitionofTermsRelatingtoPlastics";ASTMF412,"StandardTerminologyRelatingtoPlasticPipingSystems";ISO9080,"Plasticspipingandductingsystems-Determinationofthelong-termhydrostaticstrengthofthermoplasticsmaterialsinpipeformbyextrapolation";andISO12162,"Thermoplasticsmaterialsforpipesandfittingsforpressureapplications-Classification,designationanddesigncoefficient".

AdjustingRecommendedRatingsforApplication-SpecificEnvironments:ItisthecurrentpolicyofthePPIHSBtoproviderecommendationsoftheHDB’sandHDS’sat73°FandelevatedtemperatureHDB’sforwaterforthermoplasticpipingcompounds.Therecommendedratings,HDB/HDS/PDB/MRS/CRS/SDB,issuedbythePPIHSBarebaseduponconditionsunderwhichthetestdatawereobtained,e.g.,constantpressure,temperature,andhydrostatictestenvironment.Variousindustrystandards,codes,orregulationscanutilizetheapplicationofappropriatedesignfactorsordesigncoefficientstocalculatethemaximumallowableoperatingpressureforthepipingsystemforthedesiredapplication(s).Undercertainconditions,suchaspressurecycling,elevatedtemperatureexcursions,aggressiveinternalorexternalenvironments,liveanddeadloads,notchsensitivityoftheburiedpipe,orhandlingandinstallationconcerns,thelong-termpipeperformancemaybesignificantlyreduced.Thus,amoreconservativedesignfactorordesigncoefficientmayapply.Further,sustainedhydrostaticpressuretestingatelevatedtemperaturesusedtoobtainsomerecommendationsmaynotbesufficienttofullyevaluateeitherthethermaloroxidativestabilityofthepipecompound.

RecommendationofHydrostaticDesignBasis(HDB)andHydrostaticDesignStress(HDS):TheHydrostaticDesignStress(HDS)istheestimatedmaximumtensilestressthematerialiscapableofwithstandingcontinuouslywithahighdegreeofcertaintythatfailureofthepipewillnotoccur.Thisstressiscircumferentialwhentheinternalhydrostaticwaterpressureisapplied.TheHDSisdeterminedbyreducingtheHDBbyaHydrostaticDesignBasisFactor(DFHDB)whichisanumberlessthan1.00.ThisdesignfactorisusedtoreducetheHDBintoanengineeringdesignstresstakingintoconsiderationthevariablesandmarginofsafetyinvolvedinaproperlyinstalledthermoplasticpressurepipesystem.ThePPIHSBrecommendedDFHDBareforsustainedwaterpressureat73°F.

HydrostaticDesignStress(HDS):HDSrecommendedratingsissuedbythePPIHSBaremaximumrecommendedvaluesforconditionsequivalenttothoseunderwhichthetestdatawereobtained,e.g.,constantpressure,temperatureandspecifictestenvironment.MaximumHDSvaluesarearrivedatinthePPIHSBpoliciesbymultiplyingtheHDBbyadesignfactorof0.50unlessotherwisestatedinthisPPITR-3.

ProductStandards:ScientificproceduresandhistoricalexperiencesupportthatanHDB/HDS/PDB/MRS/CRS/SDBrecommendedrating,basedontestmethodASTMD2837,ISO9080orASTMF2018-00,isausefulindicatoroftherelativelong-termstrengthofathermoplasticpipingcompound.Theactuallong-termperformanceofathermoplasticpipingcompound(orapipingproductmadewiththatthermoplasticpipingcompound)maybedifferentbecauseoffactorsandconditionsthatarenotaddressedinASTMD2837,ISO9080,ASTMF2018-00orthisreport.Theseotherfactorsandconditions,notaddressedinASTMD2837,ISO9080,ASTMF2018-00orthisreport,needtobeconsideredandshouldbeaddressedintherelevantpipeproductstandard.TheappropriatenessofanHDB/HDS/PDB/MRS/CRS/SDBrecommendedratingforaspecificapplicationistheresponsibilityoftheenduserortheappropriate/governingregulatoryentity.Theterm“50-yearstrengthvalue,”asusedinASTMD2837,isamathematicalextrapolationthatisusefulinthecontextofdevelopinganHDB.Itdoesnotnecessarilyconstitutearepresentationthatanymaterialwithsuchavaluewillperformunderactualuseconditionsforthatperiodoftime.

Sunlight(UV)Exposure:Thesepoliciesdonottakeintoconsiderationtheadequacyofprotectionagainstsunlightexposureinanythermoplasticpipingcompound.Manufacturersmayincludesuitableingredientsfortheprotectionofpropertiesagainstpossibledegradationbysunlightradiationduringnormalstorageanduse.ProductstandardsmayalsospecifyrequirementsforUVprotection.

RecommendedRatingsareFormulationSpecific:EachHDB/HDS/PDB/MRS/CRS/SDBrecommendedratingissuedbythePPIHSBisspecifictothatparticularthermoplasticpipingmaterialcompoundformulation,includingtheprocedureformixing,whichisrepresentedbythedatasubmittedtothePPIHSB.Anychangesinthemixingprocedure,intheformulation,orinitsingredients,outsidethosepermittedinthePPITR-3policiesareconsideredtoresultinanewcompound,whichmayhavedifferentlong-termstrengthproperties.ThelistedHDB/HDS/PDB/MRS/CRS/SDBdoesnotapplytothisnewcompound,unlessthechangeshavebeenmade,orvalidated,inaccordancewithoneormoreofthepoliciespresentedinPPITR-3,orhavebeenconsideredbythePPIHSBanddeemedacceptablebasedoninformationprovidedtothePPIHSB.

ResinChanges:Aninherentassumptioninthedevelopmentofthesepoliciesandproceduresisthatthecommercialthermoplasticcompoundwillbeofequivalentchemicalandmolecularcomposition,insofarastheseparametersinfluencelong-termstrengthanddurability,tothethermoplasticcompoundusedinthecompositiononwhichtheoriginallong-termdatasuppliedtoPPIHSBwereobtained.AnymodificationofthethermoplasticcompoundisconsideredtoresultinadifferentmaterialfromtheoneonwhichtheoriginalHDB/HDS/PDB/MRS/CRS/SDBrecommendedratingswerebased.UnlessthemodificationisotherwisecoveredinaPPITR-3policy,thePPIHSBChairshouldbenotifiedofsuchmodificationsandtheapplicablepolicyfollowedtomaintainthelisting.Inthecaseofachangeinmanufacturinglocationoftheresinusedinalistedthermoplasticcompound,thePPIHSBChairshouldbenotifiedandanyapplicablepolicyfollowedtomaintainthelisting.Also,inthecaseofanydeviationorcircumstancenotcoveredbyaspecificpolicy,thedeterminationunderthesepolicieswillhavetobemadebythePPIHSBinconsultationwiththemanufacturer.

Disclaimer:WhileeveryefforthasbeenmadebythePPIHSBtoassurethatthesepoliciesaresound,reasonableandprudent,PPIHSBexpresslydisclaimsanyguaranteeorwarrantyregardingtheirapplication.EachmanufacturerwholiststhermoplasticcompoundsorcompositepipeinaccordancewiththeproceduresinPPITR-3doessovoluntarilyandwiththeexpressagreementthatPPIassumesnoliabilityinregardstothelistedthermoplasticcompoundsorcompositepipe,andthatthemanufacturerwillholdPPIharmlessfromanyclaimsorliabilityarisinginconnectionwithitslistedthermoplasticcompoundsorcompositepipe.

Manufacturer’sResponsibility:Themanufacturerisresponsibletoensurethattheirproductiscontinuallymanufacturedinsuchamannerastomaintainthelong-termstrengthanddurabilityconsistentwiththelong-termdatasuppliedtothePPIHSB.Inthecaseofadeviationorcircumstancenotcoveredbyaspecificpolicy,themanufacturermayconsultthePPIHSB.

AdoptionofPoliciesandProcedures:Thesepoliciesandprocedureshavebeenadoptedusingstandardletterballotmethods.

Interpretations:QuestionspertainingtotheinterpretationofanypoliciesinthisreportshouldbereferredtothePPIHSBChair,PlasticsPipeInstitute,105DeckerCourt,Suite825,Irving,TX75062.

MaximumTemperatureforListings:ThemaximumtemperatureforwhichPPIHSBwilllistanHDB/HDS/PDB/MRS/CRS/SDBforamaterialinaccordancewiththepoliciesandproceduresinPPITR-3is200°F(93°C).Forlistingattemperaturesabove200°F,a“SpecialCase”(SeeNote15)mayberequestedforconsiderationbythePPIHSB.

SpecialCaseListings:ThepoliciesandproceduresinPPITR-3areintendedtocoverHDB/HDS/PDB/MRS/CRS/SDBrecommendedratingsformostthermoplasticpipingmaterials.ThePPIHSBrecognizestheremaybecases,issuesorcircumstancesthatarenotcoveredinPPITR-3,andthatmayjustifyanexceptiontothestandardpolicies.ToallowmanufacturersanopportunitytohavetheircompoundsorcompositepipelistedbyPPIHSBwhenthisoccurs,thePPIHSBhasprovideda“SpecialCase”process.Themanufacturermaypresentits“Case”tothePPIHSBatoneoftheirtwoannualmeetings,usuallyinFebruaryandAugust,usingtheapproved“ChecklistforthePPIHSBSubmissions”forminPPITR-3AppendixX.1.AllinformationprovidedtothePPIHSBinthesespecialcaseswillbemadeavailableforreviewonlybythePPIHSBmembersandPPIstaff,andwillbeheldbytheminstrictconfidence,inaccordancewithPPI’swrittenconfidentialityprocedures(availablefromthePPIHSBChair).Thereisafeeforeachspecialcase.AcompanyorindividualinterestedinpresentingaspecialcasetothePPIHSBshouldcontactthePPIHSBChairwellinadvanceofthemeeting.Acompletedsubmissionformmustbereceivedatleast30-daysinadvanceofthePPIHSBmeetingtopermitthePPIHSBconsiderationatthatmeeting.

ACRONYMS

ANSI

AmericanNationalStandardsInstitute

1430Broadway

NewYork,NY10018

API

AmericanPetroleumInstitute

211NorthErvaySuite1700

Dallas,TX75201

ASTM

AmericanSocietyforTestingandMaterials

100BarrHarborDrive

WestConshohocken,PA19428

AWWA

AmericanWaterWorksAssociation

6666WestQuincyAvenueDenver,CO80235

CSA

CSAGroup

178RexdaleBoulevardEtobicokeOntarioCanadaM9W1R3

PPIHSB

PPIHydrostaticStressBoardc/oPlasticsPipeInstitute,Inc.105DeckerCourt,Suite825

Irving,TX75062

ISO

InternationalOrganizationofStandardization

CentralSecretariatGeneva,Switzerland

USAContact:

AmericanNationalStandardsInstitute1430BroadwayNewYork,NY10018

NSF

NSFInternational

789DixboroRoad

AnnArbor,MI48113-0140

or

P.O.Box5059

2600GBDelft,Netherlands

PPI

PlasticsPipeInstitute,Inc.

105DeckerCourt,Suite825

Irving,TX75062

DEFINITIONS

Brittle

Afailuremodewhichexhibitsnovisible(tothenakedeye)materialdeformation(stretching,elongation,orneckingdown)intheareaofthebreak.

Commerciallyproducedpipe

Pipemadebyapipeproduceroncommercialproductionequipment.

Compositepipe

ThispipeisdefinedbythefollowingGroups1,2and3.NOTE:Theregressionmusthaveanegativeslope.

Group1:HelicallyWrappedReinforcedThermoplasticPipe(RTP):Thecaseinwhichthereinforcementelementsareappliedsuchthattheyhavetheshapeorformofahelix(spiral)andadditionalnon-helicalelementsareacceptable.

Group2:DispersedReinforcement:Solidwallpipewithreinforcementdispersedbycompoundinginthepolymermatrix.

Group3:Multilayer(non-helicallywrapped):Apressureratedpipehavingmorethanonelayeranddoesnotrelyexclusivelyonareinforcementforitsstrength.

Barrier:apipeidentifiedwithdistinctlayersofdissimilarmaterialssuchaspolymer/metal/polymer(PEX/AL/PEX)orpolymer/non-stressratedpolymer/polymer(PEX/EVOH/PEX).

Reinforced:apipeidentifiedwithdistinctlayer(s)suchasmetalmesh,foamedoralayerwithdispersedfillers.

Coextrudedthermoplasticcompounds:apipeidentifiedwithdistinctlayersofthermoplasticcompoundssuchasMDPEwithaHDPE,PPwithPE,naturalplasticwithapigmentedlayerorothersothercoextrudedstructure.

CRSq,t

TheCategorizedRequiredStrength,CRSq,t,isthecategorizedlowerpredictionlimit(LPL)ofthelong-termhydrostaticstrengthatatemperature(q)andatime

(t)asdeterminedinaccordancewithISO9080andISO12162.CRSq,tat20°Cand50yearsequalsMRS.

(C)

DesignCoefficient-anumbergreaterthan1.00thattakesintoconsiderationthevariablesanddegreeofsafetyinvolvedinaproperlyinstalledThermoplasticpressurepipinginstallation.Forpurposesofthisdocument,adesigncoefficientrecommendedforusewithanMRScategoryis

designatedC.

(DF)

DesignFactor-anumberlessthan1.00thattakesintoconsiderationthevariablesanddegreeofsafetyinvolvedinaproperlyinstalledthermoplasticpressurepipinginstallation.Forpurposesofthisdocument,adesignfactorrecommendedforusewithanHDBcategoryisdesignatedDF.

Dependentlisting

Aseparatelistingofaformulationthathaspreviouslybeenestablishedasanindependentlistingunderanotherowner'sdesignation.RefertoPartD.3ofPPITR-3.

Ductile

Afailuremodewhichexhibitsmaterialdeformation(stretching,elongation,orneckingdown)intheareaofthebreak.

E-X

Thedatalevelofanexperimentalgradelistingwhere'X'isthenumberofthegradelevel.e.g.:E-2coversdataouttoatleast2,000hours,E-8coversdataouttoatleast8,000hours,etc.

ExperimentalGrade(E)

APPIHSBrecommendedratingthatisvalidforalimitedduration,giventothosematerialscoveredbydatathatdonotyetcomplywiththefullRequirementsoftheStandardGrade,butsatisfytheapplicableminimumpreliminarydatarequirementsthataredetailedinTR-3.TheownerofanexperimentallistingmustunderstandthereisapotentialriskincommercialsaleofanexperimentalproductincaseitdoesnotmeetalltheTR-3requirementsforastandardgrade.

HDB

ThetermHDB(HydrostaticDesignBasis)referstothecategorizedlong-termhydrostaticstrength(LTHS)inthecircumferentialorhoopdirection,foragivensetofenduseconditions,asestablishedbyASTMTestMethodD2837,"StandardTestMethodforObtainingHydrostaticDesignBasisforThermoplasticPipeMaterials."HydrostaticDesignBasis(HDB)—oneofaseriesofestablishedstressvalues(specifiedinTestMethodD2837)foraplasticcompoundobtainedbycategorizingthelong-termhydrostaticstrengthdeterminedinaccordancewithASTMMethodD2837.

HDS

HydrostaticDesignStress–therecommendedmaximumhoopstressthatcanbeappliedcontinuouslywithahighdegreeofcertaintythatfailureofthepipewillnotoccur.

Independentlisting

AlistingthathasbeenestablishedbyaformulationownerundertheprovisionsofPartAofTR-3.

Laboratoryproducedpipe

Pipeproducedthatdoesnotfulfiltherequirementsofcommerciallyproducedpipe.

LCLRatio

TheratioofLCLexpressedasapercentage.Thisratioisameasureof

LTHS

theamountofscatterinthedataandmustbeatleast85%.

LCL

LowerConfidenceLimit-ThelowestvalueoftheLTHS,basedonastatisticalanalysisoftheregressiondatathatcanbeexpectedat100,000hours.

LTHS

Long-termhydrostaticstrength-theestimatedtensilestressinthewallofthepipeinthecircumferentialorientationthatwhenappliedcontinuouslywillcausefailureofthepipeat100,000hours.Thisistheinterceptofthestressregressionlinewiththe100,000-hcoordinate.

MRP

MinimumRequiredPressure—oneofaseriesofestablishedpressurevaluesforaplasticpipingcomponent(multilayerpipe,fitting,valve,etc.)obtainedbycategorizingthelong-termhydrostaticpressurestrengthinaccordancewith

ISO9080.

MRS

ThetermMRS(MinimumRequiredStrength)referstothecategorizedlong-termhydrostaticstrengthinthecircumferential,orhoopdirection,foragivensetofenduseconditions,asestablishedbyISO9080,"DeterminationofLong-TermHydrostaticStrengthofThermoplasticMaterialsinPipeformbyExtrapolation."MinimumRequiredStrength—oneofaseriesofestablishedstressvaluesforaplasticcompoundobtainedbycategorizingthelong-termhydrostaticstrengthdeterminedbyhydrostatictestinginaccordancewith

ISO9080andISO12162.

PDB

ThetermPDB(PressureDesignBasis)referstothecategorizedlong-termpressurestrengthformultilayerpipesorothercomplexpipingcomponents,asestablishedbyASTMTestMethodD2837,"StandardTestMethodforObtainingHydrostaticDesignBasisforThermoplasticPipeMaterials."PressureDesignBasis–oneofaseriesofestablishedpressurevaluesforaplasticpipingcomponent(multilayerpipe,fitting,valve,etc.)obtainedbycategorizingthelong-termhydrostaticpressurestrengthdeterminedinaccordancewithanindustrytestmethodthatuseslinearregressionanalysis.AlthoughASTMD2837doesnotuse“pressurevalues”,thePPIHydrostaticStressBoardusestheprinciplesofASTMD2837inplottinglogpressurevs.logtimetodeterminea“l(fā)ong-termhydrostaticpressurestrength”andtheresulting“PressureDesignBasis”formultilayerpipethatislistedinPPITR-4

PHR

Partsbyweightofaspecifiedingredientperhundredpartsbyweightofthebaseresin.(SeeAppendixX.3)

PressureRating(PR)

Theestimatedmaximumpressurethatthemediuminthepipecanexertcontinuouslywithahighdegreeofcertaintythatfailureofthepipewillnotoccur.

PR=2(HDB)x(designfactor)/(SDR-1)

where

SDR=StandardDimensionRatio

=averageoutsidediameter/minimumwallthickness

Or

PR=(PDB)(designfactor)

Privatelisting

Manufacturer’slistingthatisheldprivatelywithinPPIandisnotpublishedinPPI

TR-4.

SDB

StrengthDesignBasis–oneofaseriesofestablishedstressvalues(specifiedinTestMethodD2837)foraplasticmoldingcompoundobtainedbycategorizingthelong-termstrengthdeterminedinaccordancewithASTMTestMethodF2018.

ThetermSDB(StrengthDesignBasis)referstothecategorizedlong-termstrengthforaplasticmoldingcompoundobtainedbyASTMF2018,“StandardTestMethodforTime-to-FailureofPlasticsUsingPlaneStrainTensileSpecimens.”

NOTE:TheSDBisusedonlyforamaterialintendedformoldingapplications.TheSDBshallnotbeusedforpipeapplications.

SolidWallPipe

Thepipewalliscomposedentirelyofasingleextrudedlayerofasinglecompound

StandardGrade(S)

APPIHSBrecommendedratingthatisvalidforafive-yearperiod,giventothosematerialsthatcomplywiththefulldatarequirementsofTR-3.

Substantiation

ArequirementofASTMD2513forPEmaterialstoshowthatextrapolationofthe73°Fstressregressioncurveislineartothe438,000-hourintercept.

Thermoplastic

Aplasticthatrepeatedlycanbesoftenedbyheatingandhardenedbycoolingthroughatemperaturerangecharacteristicoftheplastic,andthatinthesoftenedstatecanbeshapedbyflowintoarticlesbymoldingorextrusion.

TR

TechnicalReport

TR-X

APPITechnicalReportwhere'X'isthenumberofthereport.e.g.:

TR-3/2011isthe2011editionofTR-3,"PoliciesandProceduresforDevelopingHydrostaticDesignBasis(HDB),HydrostaticDesignStresses(HDS),PressureDesignBasis(PDB),StrengthDesignBasis(SDB),MinimumRequiredStrength(MRS)Ratings,andCategorizedRequiredStrength(CRS)forThermoplasticPipingMaterialsorPipe”

UCL

UpperConfidenceLimit-ThehighestvalueoftheLTHS,basedonastatisticalanalysisoftheregressiondatathatcanbeexpectedat100,000h.

UV

Ultra-Violetradiationfromsolarexposure.

Validation

Theprocessofensuringthat,forthosemateria