Cross Connection Plumbing - MHCEA DOLI - Plumbing.pdf · Cross Connection Plumbing James Peterson...

CrossConnectionPlumbing

JamesPetersonPlumbingProgram• Phone:(651)284‐5889• E‐mail:jim.peterson@state.mn.us

Romanswerefirsttouseleadpipetodistributewaterandremovewastewaterfrombuildings.

History

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History

Diggingwellsandcisternstocollectrainwaterwastheprimarymeansofgettingwaterthroughoutmostsettlements.Waterwasnotapopularbeverageduringthosedays.AgirlfromBarbadosboardingwithhergrandmotherin1714whiletheeight‐year‐oldattendedschoolinBoston,complainedtoherfatherthatgrandmotherwasmakingherdrinkwater.Dadwrotebackandinsistedthatshegetbeerorwineasbefittedherstation.

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History

Thisdistasteforwatergoesbacktothemedievalnotionthatwatercausedthechillsandothersickness.Themorelikelyreasonwasthattheprivyandthelocalwellweretooclosetogetherandspawnedcholeraandtyphoidinstead.

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Earlywatermainsweremadeofbored‐outlogs.Sagsinthelogallowedwatertostagnate,becomeinfestedwithinsects,andgenerallyleaveawoodytaste.

History

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AnoutbreakofamoebicdysenteryinChicagoduringthe1933World'sFairwastracedtofaultyplumbing.Tragicresultswere98deathsand1,409officialcases.

History

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MinnesotaPlumbingCode

MinnesotaChapter349,Lawsof1933,licensingofplumberswentintoeffectApril22,1933,requiringplumbersincitiesofmorethan5,000peoplebelicensed.ByOctober1933therewere:

• 663MasterPlumbers• 1037JourneymanPlumbers

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• TheMinnesotaPlumbingcodewentintoeffectinJuly1937.

• Thiscodecouldbeadoptedbyreference.Severalhundredcitiesusedthiscode.

MinnesotaPlumbingCode

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MinnesotaPlumbingCode

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MinnesotaPlumbingCode

• Thecodehadbeenrevisedin1939and1947.• The1969codewasmandatoryandappliedstatewide.

• Ithasbeenrevisedmanytimessincetoupdatefornewtechnologies.

• Backflowprotectionhasfollowed.

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CrossConnections

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BackSiphonage

Takenfromwww.city.ames.ia.us/waterweb/images/backflow_anim_2.gif

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BackSiphonage

Takenfromwww.monroevillewater.org/cross_conection/

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BackSiphonage

Takenfromelcowater.org/backflow.html

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BackSiphonage

ProtectionDevices

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• ASSE1019• AtmosphericV‐Bas

partofthevalve

BackSiphonage

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• AtmosphericVacuumBreaker(AVB)

• ASSE1001

BackSiphonage

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• ShutoffvalvesarenotpermitteddownstreamofanAVB.

• Nomorethan8hourslinepressure.

BackSiphonage

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Hosebibbackflow

BackSiphonage

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• 1052notratedforbackpressure

• Noshut‐offdownstream

BackSiphonage

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• TheASSE1052istheONLYapprovedscrewonhosebibbackflowpreventer

• Backpressurenotpermitted

• ContinuouslinepressureNOTPERMITTED

BackSiphonage

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HosebibwithASSE1052.

BackSiphonage

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BackSiphonage

TheASSE1011forhosebibsarenolongerapproved.

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• Pressurevacuumbreakers

• Continuouslinepressurepermitted

• Thisisatestabledevice

BackSiphonage

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BackSiphonage

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ThePVBmustbeatleast12inchesabovethehighestsprinklerhead

BackSiphonage

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YardHydrants

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BackPressure

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BackPressure

Whenthepressureintheplumbingsystemcanriseabovethepressureinthewatersupply

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BackPressure

takenfromwww.city.ames.ia.us/waterweb/Water_Meter/Backflow_Events.ht

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• Double‐checkvalvewithintermediateatmosphericvent(DCVIAV)

• Forlowlevelhazard(tasteandodor)

• Backpressurepermitted

• Linepressurepermitted

• Nottestable

BackPressure

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• Reducedpressurezonebackflowpreventerassembly(RPZ)

• Forhighlevelhazard• Backpressure

permitted• Linepressure

permitted• Requiretestingand

mustbemaintained

BackPressure

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BackPressure

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• Thisdeviceiscommontodairyoperations.

• Itinnotlistedasanapprovedback‐flowprotection.

BackPressure

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DeviceTesting

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DeviceTesting

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DeviceTesting

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DeviceTesting

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DeviceTesting

•Abackflowpreventionrebuildercertificationallowstheholder,whomustalsoholdacurrentplumbinglicense,toperformtheinstallation,maintenance,testing,repair,replacementorrebuildingofreducedpressurezonebackflowpreventionassemblies.CurrentASSE5130and5110certificationisrequiredforthisregistration.

•Abackflowpreventiontestercertificationlimitstheholdertotestingreducedpressurezonebackflowpreventionassemblies.Aplumberlicenseisnotrequiredtoobtainatestercertification,thoughcurrentASSE5110certificationisrequired.

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DeviceTesting

•

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WaterSofteners

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Getthedrainsoffthefloorandoutofthefloordrains

Drains

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Remembertheairgap

Drains

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• Noairgap• Greenhoseisnot

approvedforwaterdistribution.

NotYet

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Drainmaterialmustmeettherequirementsforwaterdistribution.

Closebutnocigar

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• Properairgap• Materialapprovedfor

waterdistribution.

Nowthat’sbetter

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FederalSafeDrinkingWaterAct(SDWA)regarding"lead‐free"plumbing

EffectiveJan.4,2014,theReductioninLeadDrinkingWaterActrequiresalldrinkingwatersystemmaterialsandproductsincludingplumbingpipes,fittingsandfixturesintroducedintocommerceorforusemustmeetthenew"lead‐free"definition.Thisdefinitionhasbeenrevisedfromnotmorethan8percenttomean"notmorethanaweightedaverageof0.25%leadwhenusedwithrespecttothewettedsurfacesofpipes,pipefittings,plumbingfittingsandfixtures."

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FederalSafeDrinkingWaterAct(SDWA)regarding"lead‐free"plumbing

• Couldtheproductcomeincontactwithdrinkingwater?

• IfNOthenitdoesnothavetomeettheleadfreerequirements

• IfYESthen‐‐‐‐‐‐

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FederalSafeDrinkingWaterAct(SDWA)regarding"lead‐free"plumbing

• Istheproductatoilet,bidet,urinal,fillvalve,showervalve,servicesaddle,orwaterdistributionmaingatevalvelargerthan2inches?

• IfYESthentheproductdoesnotneedtomeetthelead‐freerequirement.

• IfNOthen‐‐‐

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FederalSafeDrinkingWaterAct(SDWA)regarding"lead‐free"plumbing

• Istheproductusedexclusivelyfornonpotableservicesorwherethewaterisnotanticipatedtobeusedforhumanconsumption?

• IFNOthen:Productmustmeetthenewlead‐freerequirement

• IfYESthen:Productdoesnotneedtomeetthelead‐freerequirement

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"Thereisnoquestionthatourhealthhasimprovedspectacularlyinthepastcentury.Onethingseemscertain:itdidnothappenbecauseofmedicine,ormedicalscience,oreventhepresenceof

doctors."

"Muchofthecreditshouldgototheplumbersandengineersofthewesternworld.Thecontaminationofdrinkingwaterby

humanfeceswasatonetimethegreatestcauseofhumandiseaseanddeathforus...(but)whentheplumbersandsanitaryengineers

haddonetheirworkintheconstructionofourcities,thesediseasesbegantovanish."

‐ LewisThomas(medicalresearcherandessayist,1913‐1993)52

MinnesotaDepartmentofLaborandIndustry

JamesPetersonPlumbingProgram• Phone:(651)284‐5889• E‐mail:jim.peterson@state.mn.us

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