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    November 2010

    Fresh Water Cooling Towers Scheme

    for Air Conditioning Systems

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    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    Contents

    Page

    Defnitions

    Part1Introduction

    1. Background 1

    2. TheScheme 3

    2.1 Am 3

    2.2 CondtonsoPartcpaton 3

    2.3 CondtonsorSuspensonorCessaton 4

    2.4 Revews 5

    2.5 DesgnatedAreas 5

    Part2ParticipationProceduresandGuidance

    3. StatutoryRequrements 6

    4. CodesoPractce 7

    5. MnmumRequrementsorRegstratonundertheScheme 8

    6. InormatonrequredorApplcaton 9

    7. RecordsKeepngdurngOperaton 10

    8. GeneralPreamble 13

    9. Waterworks 14

    10. BuldngWorks 16

    11. SewageServcesCharge 17

    12. WaterPollutonControl 19

    13. ArPollutonControl 1914. NoseControl 19

    15. NusanceControl 20

    16. OccupatonalSaetyandHealth 20

    Part3InormationorEnquiryandApplication

    17. Forms 21

    18. ProcessChart 21

    19. Enqures 22

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    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    InthsSchemeBrochure,unlessthecontextotherwsespeces,

    coolngtowermeansanydevceor lowerngthetemperatureowaterby

    evaporatvecoolngnwhchambentarsncontactwthallngwater,thereby

    exchangngheat; drtmeanswaterlostrom the coolngtower aslqud

    dropletsoraerosolsentranedntheexhaustar,excludngcondensaton.

    Defnitions

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    1

    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    1 Background 1 Background

    ThePrelmnaryPhaseConsultancyStudyonWderUseoWater-cooledAr

    CondtonngSystems(WACS)n Hong Kong was completedn md1999.

    Thestudyhas establshed that WACShas greaterenvronmental,economc

    andnancalbenetsthanAr-cooledArCondtonngSystems(AACS).

    Subsequently,a terrtory-wdemplementatonstudywascompletedn md

    2003oracltatngaull-scalemplementatonoWACS.Themplementaton

    studyexamnedanddentedareassutableorwderuseoWACSandalso

    examnedndetalthenancal,regulatory,landadmnstraton,nrastructural,

    envronmentalandhealthssues,ncludngthepreventonoLegonnares

    dsease.

    Annter-departmentalworknggroupwassetuptolaunchaplotschemeon1

    June2000orwderuseoreshwaternevaporatvecoolngtowersnenergy

    ecentarcondtonngsystems(thePlotScheme)ndesgnatedareaswhere

    exstngwatersupplesandseweragenetworkwouldbeadequateto meetthe

    addtonal demand. Althoughbothseawaterandresh watercanbe used

    asthecondensngcoolngmeda,thePlotScheme sonlyapplcabletoresh

    waterevaporatvecoolngaterconsderngthesourceand capactyoexstng

    watersupplynetworks.Theworknggroupcomprsesmembersromtwopolcy

    bureauxandsevengovernmentdepartments:

    Part1:Introduction

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    2

    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    DevelopmentBureau(DEVB)

    EnvronmentBureau(ENB)

    BuldngsDepartment(BD)

    DranageServcesDepartment(DSD)

    ElectrcalandMechancalServcesDepartment(EMSD)

    DepartmentoHealth(DH)

    LandsDepartment(LandsD)

    PlannngDepartment(PlanD)

    WaterSupplesDepartment(WSD)

    Thentermrevewsn2005and2007othePlotSchemehaverevealedthe

    Schemehasbeenapromsngwaytoascertantheenergyecencynar

    condtonngsystemsornewandexstngnon-domestcbuldngswthoutposng

    adversempactsontheexstngwatersupplyandseweragenrastructures. As

    aresult,wthsupportothepolcybureauxconcerned,thePlotSchemehas

    operatedasastandngschemerom1June2008,andrenamedasSchemeor

    WderUseoFreshWaternEvaporatveCoolngTowersorEnergy-ecentAr

    CondtonngSystems(orFreshWaterCoolngTowersSchemensmpleterm).

    Theregulatory andnsttutonal rameworkotheSchemebascallyremaned

    unchangedexceptsomeupdatesntheoperatonalandvaldatonrequrements.

    Aurtherrevewwasalsoconductedn2010tostreamlnetheapplcaton

    proceduresandrequrementsorjonngtheScheme.TheSchemeBrochures

    updatedaccordngly.

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    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    2 The Scheme2 The Scheme

    2.1 Aim

    TheSchemeamsto:

    (a) promoteenergy-ecentwater-cooledarcondtonngsystems;

    (b) montortheaddtonalwaterdemand;

    (c) montorthequanttyandqualtyobleed-oefuentdschargerom

    thesystems;

    (d) montorthehealthandenvronmentaleectsarsngromthe

    systems;and

    (e) compledataorormulatngandupdatngplanstopromotewater-

    cooledarcondtonngsystemsnHongKong.

    2.2 Conditions o Participation

    Thsschemeapplestoallnon-domestctypesonewandexstngbuldngs

    wthnthedesgnatedareas(seepara.2.5below).AllPropertyDevelopers,

    Landlords,PropertyManagementAgents,DesgnersandSystemOperators

    are welcome toapplyortheuse oreshwaterorar-condtonng

    nstallatonsntherbuldngswthnthedesgnatedareas.Applcatonsor

    buldngsnotwthnthedesgnatedareasarealsowelcomedandwllbe

    consderedonacase-by-casebassnconsultatonwthWSDonadequacy

    oreshwater supply.Applcatonshallbe submtted together wth the

    requrednormatonasstpulatednParagraph6totheauthortes

    concerned.

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    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    Partcpantsshallcomplywthallrelevantstatutoryregulatonsas wellas

    mnmumrequrementsasladdownnPart2orjonngtheScheme.

    Besdes,thepartcpantsarerecommendedtoadoptthebestpractces

    relatedtothedesgn,operatonandmantenanceocoolngtowersasper

    thegudelnesandrecommendatonsgvennrelevantcodesopractces.

    Alltheserequrementsaresettoachevebetterenergyecency,to

    protecttheenvronmentandtosaeguardthepublchealthandsaety

    whleusngreshwaterorevaporatvecoolng.

    2.3 Conditions or Suspension or Cessation

    ThoughtheSchemesamedtobeastandngscheme,tcanstllbe

    suspendedorceaseduponobtanngtheendorsementromtheWorkng

    Group(herenreerredtoWorkngGroupmentonednParagraph1)

    undertheollowngcondtons:

    (a) Waterratonngsmplementedntheterrtory,or

    (b) AnoutbreakoLegonnaresdseasentheterrtory,or

    (c) Waterresourcesare antcpatedto benadequateorwater supply

    nrastructurecannotcopewththedemandbywater-cooledar

    condtonngsystems.

    ItheSchemessuspendedorceasedundertheabovecondtons,allnew

    applcatonswll notbeprocessed. Thewater supplyto theregstered

    coolngtowernstallatonswllbesubjecttoregulatonbytheWater

    Authorty. Thetradewll normallybe noted notlessthan 6months

    nadvance,unlessthesuspensonor cessaton shouldbe executed

    mmedatelyduetosomeseverestuatons.

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    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    2.4 Reviews

    Thecondtonsandrequrementsnthebrochureorregstratono

    coolngtowersundertheSchemewllbesubjecttorevewbythe

    InterdepartmentalWorkngGroupotheSchemesoas toacltatethe

    promotono theuseo water-cooledarcondtonngsystemsn Hong

    Kong.

    2.5 Designated Areas

    ThedesgnatedareasorapplcatonorjonngtheSchemearedelneatednthelatestlocatonplanswhchcanbedownloadedatEMSDwebpage:

    (http://www.emsd.gov.hk/emsd/eng/pee/pswct_pub.shtml).

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    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    Thspartdescrbesthestatutoryrequrements,normatonrequredand

    processesnvolvedwthvarousgovernmentdepartmentsntheapplcatonorjonngtheSchemeorusngreshwaterorcoolngtowersorarcondtonng

    systems.

    3 Statutory Requirements3 Statutory Requirements

    Ingeneral,theapplcantsshallensurethatthercoolngtowerscomply

    wth,butnotlmtedto,theollowngOrdnances,Objectves,andTechncal

    Memorandum:

    WaterworksOrdnance(WWO)(Cap.102)

    BuldngsOrdnance(BO)(Cap.123)

    SewageServcesOrdnance(SSO)(Cap.463)

    WaterPollutonControlOrdnance(WPCO)(Cap.358)

    ArPollutonControlOrdnance(APCO)(Cap.311)

    NoseControlOrdnance(NCO)(Cap.400)

    OccupatonalSaetyandHealthOrdnance(OSHO)(Cap.509)

    PublcHealthandMuncpalServcesOrdnance(PHMSO)(Cap.132)

    TechncalMemorandumonStandardsorEfuentDschargedntoDranage

    andSewerageSystem,InlandandCoastalWaters

    TechncalMemorandumortheAssessmentoNoseromPlacesotherthan

    DomestcPremses,PublcPlacesorConstructonStes

    WSDsWaterQualtyObjectveso SeaWater orFlushngSupply(at

    Dstrbuton)

    Part2:ParticipationProceduresandGuidance

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    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    Applcantsareadvsedtocheckotherrelevantstatutoryrequrementsandseek

    theproessonaladvceromaLcensedPlumber(LP),anAuthorzedPerson(AP)

    anda RegsteredProessonalEngneer(RPE)o buldngservcesormechancal

    engneerngdscplnewhentheyhavequeresntheproceduresandthe

    standardoworksrequred.

    4 Codes o Practice4 Codes o Practice

    Besdesthe above statutoryrequrements, thepartcpantso theScheme

    arerequredtoadoptthebestpractcesrelatedtothedesgn,operatonand

    mantenanceocoolngtowersaspergudelnesandrecommendatonsgvenn

    theollowngcodesopractce:

    CodeoPractceorPreventonoLegonnaresDsease2007(CoP(PLD))

    CodeoPractceorWater-cooledArCondtonngSystems(CoP(WACS)):

    Part1,Part2andPart3

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    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    5 Minimum Requirements or Registration under the5 Minimum Requirements or Registration under the

    SchemeScheme

    ForregstratonocoolngtowernstallatonsundertheScheme,thepartcpant

    shallmeettheollowngmnmumrequrementsorthercoolngtowers:

    (a) Coolngtowersshallbedstantrom:

    () thesurroundngarntakesandexhaustsandoperablewndows,

    otherthanthosestatedn()below,wthmnmum7.5mhorzontal

    separatonngeneral1;

    () or thecoolng towerwthn 7.5mromtsown buldngaade

    boundary,arntakesandexhaustsandoperablewndowsonts

    vertcalbuldngaadebymnmum7.5mbelowor20mabove;and

    () pedestranthoroughareandareaopublcaccessbymnmum7.5m1.

    (b) Coolngtowersshallbeprovdedwtheectvedrtelmnators(wthdrt

    emssonnotmorethan0.005%omaxmumdesgnwatercrculaton

    rate)thatmnmzetheormatonandreleaseodrt 2.

    (c) Coolngtowersshallbeprovdedwtheectvewatertreatmentequpment

    andbleed-odevce tocontrolbacteralgrowth.Bleed-owaterrom

    coolngtowersshallbedschargedtoafushngtank(vaabreaktank

    applcable)andreusedorfushngpurpose 3asaraspractcable.

    (d) Deadlegsshallbemnmzedtoavodstagnantwaterasaraspractcable

    nthecoolngwatercrculatonppeworksorthecoolngtower,and,

    whereunavodable,purgevalvesshouldbeprovdedtothedeadlegsor

    regulardranng.

    1 Re.CoP(WACS)Pt.1s.4.1.3and4.1.42 Re.CoP(WACS)Pt.1s.3.6

    3 Thsarrangementstomnmzetheburdenoaddtonaleluenttotheseweragesystems.

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    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    (e) Coolngtowersshallbeprovdedwthadequateandsaeaccesstoallow

    orthemantenance,nspectonandwatersamplngrequredunderthe

    Scheme.

    () Coolngtowersshallbethoroughlycleaned,desludgedanddsnectedat

    leastonceevery6months 4.

    (g) Coolngtowers shallbemantaned to ensurethat the coolngtowers

    have()aLegonellaBacteraCount(LBC)thatsbelow10cu/ml,and()

    aHeterotrophcColonyCount(HCC)thatsbelow100,000cu/ml 5.The

    ownersshallarrangeorwatersamplngtestsorthecoolngtowers()at

    leastonceevery3monthsorLBC;and()atleastonceamonthorHCC.

    (h) Rskmanagementplan 6(orwatersaetyplan 7)shallbeprovdedor

    coolngtowerssystemstobenstalledatsuchacltesasstpulatedn

    secton7otheCoP(WACS):Part1.

    6 Inormation Required or Application6 Inormation Required or Application

    6.1 Attheearlydesgnstageoneworreplacementcoolngtowernstallaton,

    applcants may provdental normatonas requredn theapplcaton

    orm(FormCT1A)orprelmnaryassessmentandacceptancenprncple

    otherapplcaton.

    6.2 Beorecommencngtheplumbngworksorcoolngtower(s)nstallaton

    andapplyngtoWSDorpermssontoproceedwththeplumbngworks,

    theapplcantsshouldsubmtaNotceoCommencementoCoolng

    TowerInstallatonWork(FormCT1B)togetherwthothernstallaton

    detalsnFormCT4.

    4 Re.CoP(WACS)Pt.2s.3.4.1

    5 Re.CoP(WACS)Pt.2s.2.5.36 Re.s7oCoP(WACS):Pt1

    7 Re.s4.1oCoP(PLD),2007

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    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    7 Records Keeping during Operation7 Records Keeping during Operation

    7.1 Records on operational conditions

    Ownersocompletedcoolngtower(s)nstallatonsshouldmontor,as

    wellas,properlyoperateandmantanthecondtonandperormance

    othernstallatons. Theyarerequredto keeprecordson theollowng

    normaton (va FormEMSDEECT3) onmonthlybassuntl the coolng

    towersaredsmantledandputoutoservce:

    (a) Condtonoeachcoolngtowershellandtssupportngramework;

    (b) Dalyoperatontme(s)andmonthlysamplngdate;

    (c) Energyconsumptonorallwater-sdeequpmentnmonthlynterval

    othewater-cooledarcondtonngsystem(s);

    (d) Totalwaterconsumptonvolumenmonthlyntervalothesystem(s);

    (e) Totalefuentdschargevolumenmonthlyntervalothesystem(s);

    () Quarterlysamplngandtestngountreated andtreatedbleed-o

    waterromthecoolngtowernstallatonbylaboratoryaccredted

    underHongKongLaboratoryAccredtatonSchemeusng

    accredtedmethodswhereverapplcablenrespectotheollowng

    parameters8:

    Colour(H.U.),

    Turbdty(N.T.U.),

    ThresholdOdourNo.(T.O.N.),

    AmmonacalN,

    SuspendedSolds(SS),

    DssolvedOxygen(DO),

    8 Theparameters,otherthanresdualbocdes/nhbtors,aremontoredormeetngWSDsWaterQualtyObjectvesoSeaWaterorFlushngSupply(atDstrbuton)

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    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    5-DayBochemcalOxygenDemand(BOD5),

    SynthetcDetergents,

    Resdualbocdes/nhbtors,and

    E.Col/100mL(ECL).

    (g) Monthlysamplng and testngo the coolng waterothecoolng

    towernstallatonnrespectotheollowngparameters:

    Totaldssolvedsolds(TDS),

    Conductvty,

    Calcumhardness,

    Totalalkalnty,

    pH,

    Temperature,

    Resdualbocde(s),and

    Resdualcorroson/scalenhbtngchemcal(s).

    (h) Monthlysamplng and testngo the coolng waterothecoolng

    towernstallatonorHeterotrophcColonyCount(HCC);

    () Quarterlysamplng and testng(orwhenever requredbythe

    approvngauthortysuchasatercommssonngormajoralteraton)

    ocoolngwaterothecoolngtowernstallatonorLegonellaBacteraCount(comprsngcategoresoLegonellapneumophla

    serogroup1,Legonellapneumophlaserogroup2to14,andother

    specesoLegonella)orvaldatonotheeectvenessothe

    preventvemeasuresaganstthegrowthoLegonella;and

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    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    (j) MantenancerecordsoeachcoolngtowerasstpulatednSecton7

    otheCodeoPractceorPreventonoLegonnaresDsease2007

    andAppendx2EoPart2otheCodeoPractceorWater-cooled

    ArCondtonngSystems.

    7.2 TheownersshallmakeavalablesuchrecordsornspectonbytheEMSDs

    ocerswhenrequested.

    7.3 Annual Audit Report

    Theownersshallcommssonanndependentandcompetentaudtorto

    conductanannualaudtorthercoolngtowersystemsnaccordance

    wth Secton4.3o Part 2o theCodeoPractce or Water-cooledAr

    CondtonngSystems. Theyshallsubmttheaudtreportonan annual

    bassbeoreeachyearendtoEMSDdurngtheservceleothecoolng

    towersystems.

    7.4 Notifcation required during operation

    7.4.1ChangesoInstallatonDetals

    TheownersshouldnotyEMSD,assoonasanykeychangeso

    nstallatondetalseected,wthFormEMSDEECT4.

    7.4.2ChangeoOwnershpoCoolngTowers

    Whentranseronstallatonownershpoccurs,theexstngowners

    andnewownersoapprovedcoolngtower(s)nstallatonshall

    completethenotcatonFormEMSDEECT5andsubmttoEMSD

    orupdateorecords.

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    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    8 General Preamble8 General Preamble

    8.1 Its recommended that theapplcants shouldapponta Regstered

    ProessonalEngneerobuldngservcesormechancalengneerng

    dscplneswellnadvanceoradvcentheproperdesgn,nstallaton,

    operatonandmantenanceocoolngtowers.

    8.2 ProrapprovalandconsentshallbeobtanedromtheBuldngAuthorty

    toconstructthesupportngrameworkorthecoolngtowers.

    8.3 Anycoolngtowershouldnotbeplacedtoprotrudebeyondtheboundary

    othelot.

    8.4 Incasecoolngtowersortherdschargeoutletsareproposedtobe

    nstalledatpodumfoorandsurroundedbyexstngproxmateresdental

    buldngblocksonthepodum,theapplcantshouldnormand/orconsult

    therelevantresdentsassocaton oralke, any,about theproposed

    nstallatonnthentalprojectdesgnstage.

    8.5 The bleed-o waterromthecoolngtowershall bedschargedtothe

    lushngtank,(vaabreaktankapplcable),andreusedorlushng

    purpose.Thsarrangementstomnmzetheburdenoaddtonalefuent

    totheseweragesystems.

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    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    8.6 Upon completono the coolngtowernstallaton,theowners should

    notyEMSDothecompletonvaFormEMSDEECT2B(orcompletono

    thenstallatonnwhole)orFormEMSDEECT2A(orphasedcompleton)

    asthecasemaybe.TheormsshouldbesgnedbyaRegstered

    ProessonalEngneerobuldngservcesormechancalengneerng

    dscplnetocertythatthecoolngtowernstallatonhasbeennstalledn

    accordancewththerequrementsstpulatednthsSchemebrochure.

    8.7 TheownershouldallowEMSDsauthorzedocersorrepresentatvesto

    enterthepremsestonspectthecoolngtowersystems,andtakewater

    samplesortestngnecessaryorvaldatonooperatonalcondtons.

    8.8 AllormscanbedownloadedatEMSDwebpage:(http://www.emsd.gov.

    hk/emsd/eng/pee/pswct_app.shtml).

    9 Waterworks9 Waterworks

    9.1 Prortoanysubmssonoproposalornewplumbngnstallatonsor

    alteratontoexstng plumbngnstallatonsormanswater suppleso

    coolngtowers,theapplcantshallobtanromtheWaterAuthorty(WA)

    suchnormatonwhchsrelevantastothedesgnotheplumbngworks.

    TheapplcantshallsubmttoWAtheplumbngproposalandconsumershp

    undertakngbytheFormWWO542.

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    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    9.2 Uponrecept otheplumbngproposalto use manswaterorcoolng

    towers,theWaterAuthortywllreplytotheapplcantnwrtngwthn

    20workngdaysnormnghm whethersuchproposalsacceptableor

    not.Undernormalcrcumstance,separatemeterng,thusseparatewater

    account, orthskndo supplys requred.Theapplcants remnded

    thatabreaktankorretanngbleed-owaterromthecoolngtowers

    orreusennternalfushngsnormallyrequred.Thebreaktankshallbe

    desgnedandconstructedsmlartothatasstatednClause8.14otheHK

    WaterworksStandardRequrementsorPlumbngInstallatonnBuldngs.

    Anysubsequentalteraton,revsonand modcaton othe approvedproposalshouldbesubmttedtotheWaterAuthortyorapproval.

    9.3 Prortocommencementotheplumbngworksormanswatersuppleso

    coolngtowersshownonanyapprovedplumbngproposal,theapplcant

    shallsubmttoWAbyLcensedPlumbertheFormWWO46(PartsIand

    II).WAwllreturntheFormWWO46(PartIII)totheapplcantorwhether

    thepermssontocommenceplumbngworkssgranted.Theapprovalo

    provdngmeteredwatersupplywllnotconeranylegalmplcatonon

    structuralstatusothecoolngtower(s)norcarryanyeectoprecludng

    actonbengtakennrespectothestructurebyanotherauthorty.As

    thebuldngworksorthecoolngtower(s)sunderthejursdctonothe

    BuldngAuthorty,t spremsesownersresponsbltyto obtanrelevant

    consentromtheBuldngAuthortyortheseworks.Faluretodosomay

    resultnremovalothesecoolngtowersbytheBuldngAuthorty.

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    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    9.4 Uponcompletonothecoolngtowernstallaton,theownershouldsubmt

    FormEMSDEECT2Btogetherwthastenspectonreportcompletedby

    anRPEtoEMSD.EMSDwllnotytheapplcantorwhetherthecoolng

    towernstallatonsacceptedunderthsScheme.Theapplcantandthe

    lcensedplumbershouldapplytoWAornspectonoplumbngwork

    bytheFormWWO46(PartIV).WAwllnotytheapplcantbytheForm

    WWO46(PartV)orwhethertheplumbng worksupto make-uptank

    arecompletedsatsactorly.Theapplcantshouldensurethatallworks

    other thanwaterworks are completed satsactorlyandacceptableto

    EMSDandtheBuldngAuthorty.Incasephasedcompletonorcoolngtower(s)nstallatonsrequred,theapplcantshallsubmtFormEMSD

    EECT2Atogetherwthaste nspectonreportcompletedbyan RPEto

    EMSD.EMSDwllnotytheapplcantwhetherthephasedcompletono

    thecoolngtowernstallatonsacceptedunderthsScheme.Theapplcant

    shouldrequesttheWAorwatersupplyorphasedcompleton.WA

    wllarrangeconcessonarywatersupplytothecoolngtowernstallaton

    underphasedcompletonprovdedthattheplumbngworksconcerned

    arecompletedsatsactorly.TheapplcantshouldnormEMSDwhenthe

    wholenstallatonscompleted.

    10 Building Works 10 Building Works

    10.1 Anypersonntendngto carry outbuldngworkssuch assupportng

    rameworksorcoolngtowers srequredundertheBuldngsOrdnance

    toappontanAuthorsedPersontoprepareplansortheapprovaland

    consento theBuldngAuthortybeore thecommencemento any

    works. Uponcompletonothe buldngworks,theAuthorsedPerson

    srequredto certy that thebuldngworkshavebeencarredoutn

    accordancewththeapprovedbuldngplans.

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    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    10.2 ItsstronglyrecommendedthattheadvceoanAuthorsedPersonshould

    besoughtwellnadvance.AdrectoryoAuthorsedPersonregstered

    undertheBuldngsOrdnancesavalablentheBuldngsDepartmentor

    vewng.

    10.3 Buldng workscarredoutwthoutprorapprovalandconsentromthe

    BuldngAuthortyareunauthorzed.TheBuldngAuthortymaytake

    enorcementactonsunderSectons24and40otheBuldngsOrdnance

    torequrethedemoltonosuchbuldngworks;and/ortoprosecutethe

    oendernthecourt.

    [Note:Alternatveproceduresorapprovalomnorworksmaybeadopted

    undertheMnorWorksControlSystem(MWCS)whchtakeseect

    rom31.12.2010.EnquresonMWCScanbemadetotheBuldngs

    Department.]

    11 Sewage Services Charge 11 Sewage Services Charge

    11.1 Accordngto theSewageServces Ordnance,all wateraccount holders

    whose premsesareconnected, whetherdrectlyor ndrectly, toa

    communaldranoracommunalsewerarelabletopaysewagecharge(SC),

    exceptorwatersuppledspeccallyorlushngpurposes.Thewater

    consumedbytheWACSssubjecttoSCandtheamountscalculated

    basedontheprescrbedSCratemultpledbythetotalwaterconsumpton

    volume.

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    18

    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    11.2 Itheconsumeroragent,ascasemaybe,consdersthatthevolumeo

    wastewaterbengdschargedtothepublcsewerageordranagesystems

    (ncludngthevolumeobleed-owaterromcoolngtowersdscharged

    tolushngtank)snotmorethan85%othetotalwaterconsumpton

    volume,theconsumercanapplytotheDranageAuthortyorareducton

    oSCbasedonarevsononthedschargeactor.Hewllberequredto

    provdenormatononthevolumeso waterconsumedandwastewater

    dschargednhsapplcaton.Fortheprovsonosuchnormaton,

    twllbepreerableortheconsumeroragenttonstallsub-metersto

    measurethevolumeowastewaterdschargedatthetermnaldranageoutletothepremses.Itheconsumeroragenthastechncaldcultes

    nnstallngthesesub-meters,heshouldexplannhsapplcatononthe

    stuatonandprovdealternatvenormatonsucentortheDranage

    Authortytoassesshsapplcaton.

    11.3 Forthepurposeoveryngthenormatonthatsneededndetermnng

    theactortobechargedortheSC,theDranageAuthortymay,

    deemednecessary,enterthepremsesoaconsumeratallreasonable

    tmesorstenspecton.

    11.4 Thenormaton collecteddurng handlngotheapplcatonmaybe

    dsclosedtootherGovernmentdepartmentsandtherauthorzedagences,

    applcable,orlawenorcementpurposesshouldtbedeemednecessary.

    Also,suchnormatonmaybedsclosedtotheElectrcal&Mechancal

    ServcesDepartmentsolelytoacltatetherrevewotherequrementsor

    theScheme.

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    19

    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    12 Water Pollution Control 12 Water Pollution Control

    AlldschargescontanngpollutngmattermustbelcensedundertheWater

    PollutonControlOrdnance(WPCO).AnycontraventontotheWPCOwll

    besubjecttoenorcementacton.Thestandardsormostlkelycontamnants

    arespecedntheTechncalMemorandumandtheEnvronmentalProtecton

    Departmentwllgenerallyollowthese.Forbocdeshoweverthelcense

    standardsneedtobedetermnedonacasebycasebass.Prospectvedschargers

    shouldprovdetheEnvronmentalProtectonDepartmentwthadvancedetals

    othebocdestheyntendtouseandtheproposedmethodotherapplcaton,

    thenatureandlocatonotheproposeddscharge.TheEnvronmentalProtecton

    Departmentwllthenspecycondtonsaccordngly.

    13 Air Pollution Control 13 Air Pollution Control

    Theemssons,ncludngwatermst,romcoolngtowerswouldbeactonable

    undertheArPollutonControlOrdnance(APCO)theemssoncauses

    anusanceandtheEnvronmentalProtectonDepartmentwouldssuean

    abatementnotcewherenecessary.Themostpractcalsolutonortacklng

    anytoweroggngstolocatethetowerwherevsbleplumewllnotbe

    objectonable.

    14 Noise Control 14 Noise Control

    Noseromanyevaporatvecoolngtowersscontrolledundersecton13o

    theNoseControlOrdnance(NCO). Shouldthe nose emanatedthererom

    exceedtherelevantcrterastpulatedntheTechncalMemorandumorthe

    Assessmento Nose romPlacesotherthanDomestcPremses,PublcPlaces

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    20

    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    orConstructonStes,theEnvronmentalProtectonDepartmentwouldssuea

    NoseAbatementNotcerequrngtheNoseProducertorectytheproblemand

    tocomplywththestatutorynosestandard.

    15 Nuisance Control 15 Nuisance Control

    Theemssonoarorthedschargeowaterromcoolngtowersnany

    premseswouldbeactonableunderPHMSOtheemssoncausesanusance.

    TheAuthortywouldssueaNusanceNotcetothenusanceproducertorequre

    hmtoabatethenusancewthntheperodspecednthenotce,andthe

    notcemay,theAuthortythnkst,specyanyworkstobeexecutedorthat

    purpose.

    16 Occupational Saety and Health 16 Occupational Saety and Health

    UndertheGeneralDutesoOSHO,employersoroccupersmustensure

    thatsaetyandhealthatworkoallemployees,orexamplebyprovdngor

    mantannga goodworkenvronment,andprovdngnormaton,nstructon,

    tranngandsupervsontotheemployees.In theoperatonoarcoolngplant

    untorventlatonoabuldng,attentonshouldbemadetoavodorreduce

    anyhealthrsksarsngromtheassocatedworkactvtesortheworkng

    envronment,suchasthersksoLegonnaresdseasesoccurredamong

    employeesandoverexposureto chemcals usedortreatment othecoolng

    water.Goodmantenancesmportanttoavodcontamnatonotheventlaton

    system.Knowledgeonhandlngchemcalscouldreducehealthrskstomnmal.

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    Form No. Usage

    EMSDEECT1A ApplcatonorPartcpaton(PrelmnaryAssessment)

    EMSDEECT1B NotceoCommencementoCoolngTowerInstallaton

    Work

    EMSDEECT2A NotcatonoPhasedCompletonoCoolngTower

    Installaton

    EMSDEECT2B NotcatonoCompletonoCoolngTower

    Installaton(s)

    EMSDEECT3 RecordsoOperatonalInormaton

    EMSDEECT4 CoolngTowerInstallatonDetals

    EMSDEECT5 NotcatonoChangeoOwnershporEvaporatve

    CoolngTowerInstallaton(s)

    21

    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    Part3:InormationorEnquiryandApplication

    17 Forms 17 Forms

    T h e u p d a t e d p r o o rm a o r m s o a p p l c at o n a n d r e g st r a t on

    lstedhereundercanbedownloadedatEMSDwebpage:

    (http://www.emsd.gov.hk/emsd/eng/pee/pswct_app.shtml).

    18 Process Charts 18 Process Charts

    ThelatestprocesschartoapplcatoncanbedownloadedatEMSDwebpage:

    (http://www.emsd.gov.hk/emsd/eng/pee/pswct_app.shtml).

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    Electrical & Mechanical Services

    Department

    (energyecencyandcoolngtowers)

    EnergyEcencyOce

    7/FElectrcal&MechancalServcesDepartment,

    3KaShngStreet,KowloonBay,

    Kowloon,HongKong.

    Webste:http://www.emsd.gov.hk

    Emal:[email protected]

    Tel:37576156

    Tel:1823

    Fax:28906081

    Water Supplies Department

    (watersupply,conservatonandcharge)

    HeadquartersOce

    43/F,ImmgratonTower,7GloucesterRoad,

    WanCha,HongKong.

    Webste:http://www.wsd.gov.hk

    Emal:[email protected]

    Tel:28245000

    Fax:28027333

    Buildings Department

    (buldngworksandsupportngrameworks

    orcoolngtowers)

    12/F,PoneerBuldng,750NathanRoad,

    Mongkok,Kowloon.

    Webste:http://www.bd.gov.hk

    Emal:[email protected]

    Tel:26261616

    Fax:25374992

    Environmental Protection Department

    (arpollutoncontrol,nosepollutoncontrol,and

    waterpollutoncontrolaswellassewagetreatment

    anddsposalobleed-owaterromcoolngtowers)

    33/F,RevenueTower,5GloucesterRoad,

    WanCha,HongKong.

    Webste:http://www.epd.gov.hk

    Emal:[email protected]

    Tel/Fax:28383111(CustomerServce

    Centre)

    Drainage Services Department

    (sewageservcescharge)

    CustomerServcesSecton

    G/F,WesternMagstracy,

    2APokFuLamRoad,HongKong

    Webste:http://www.dsd.gov.hk

    Emal:[email protected]

    Tel:28349432

    Fax:25745645

    22

    Fresh Water Cooling Towers Scheme or Air Conditioning Systems

    19 Enquiries 19 Enquiries

    FormorenormatonabouttheScheme,pleasecontacttheollowng

    departmentsdurngocehourorrelevantnormaton:

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    3

    EnergyEfciencyOfceElectricalandMechanicalServicesDepartment3KaShngStreet,Kowloon,HongKong