E202023COMPARTMENT FLOODING WATER LEVEL DETECTORS (INCLUDINGSENSORS)（英文版中国船级社）

GuidelineNo.:E-20(202306)

E-20

COMPARTMENTFLOODINGWATERLEVELDETECTORS(INCLUDINGSENSORS)

Issueddate:26Jun,2023

©ChinaClassificationSociety

Foreword:

ChinaClassificationSociety(hereinafterrefferredtoasCCS)ProductInspectionandTestingGuideline(hereinafterreferredtoasthisGuideline)containsthetechnicalrequirements,inspectionandtestingcriteriarelatedtoclassificationandstatutorysurveyofmarineproductstobeappliedforCCSapproval/inspection.

ThisGuidelinefreestheuserstoadoptothertestmethodsandrequirementswhichareequivalenttoorarestricterthanthisGuideline.

ThisGuidelineispublishedandupdatedbyCCS,andisreleasedat

.

Yourcommentsorsuggestionsarewelcomedandmaybesenttoouremailaddressed

mp@

.

Historicalversionsandreleasedate:E-20(201510) October20,2015

E-20(201610) October28,2016

E-20(201705) May9,2017

E-20(201909) Sep.19,2019

Mainchanges:

adjustthisguidelineaccordingtotherequirementofMSC.188(79)Rev.1;

correctclericalmistakes;

updatetheversionofnormativereferences.

E-20(202306)COMPARTMENTFLOODINGWATERLEVELDETECTORS(INCLUDINGSENSORS)

12/13

CONTENTS

Application 4

Normativereferences 4

TermsandDefinitions 5

Drawingsanddocumentation 5

Technicalrequirements 6

Materialsandcomponents 9

Typetest 10

Unit/batchinspection 13

COMPARTMENTFLOODINGWATERLEVELDETECTORS(INCLUDINGSENSORS)

Application

Thisguidelineisapplicabletotheapprovalandinspectionofwaterleveldetectorsequippedontheshipsbelow:.

BulkcarriersforcompliancewithSOLASregulationXII/12;

SingleholdcargoshipsotherthanbulkcarriersforcompliancewithSOLASregulationII-1/25;and

MultipleholdcargoshipsotherthanbulkcarriersandtankersforcompliancewithSOLASregulationII-1/25-1.

ThisguidelinealsoprovidestechnicalfunctionalrequirementsforbilgealarmsusedaswaterleveldetectorsinmultipleholdcargoshipsforcompliancewithSOLASregulationII-1/25-1.

ThisguidelineisalsoapplicabletopassengershipsforcompliancewithSOLASregulationII-1/22-1.

Thisguidelinedoesnotinvolvetheonboardinstallationandarrangementofwaterleveldetectors.

Normativereferences

Theapplicablenormativereferencesareasfollows:

RegulationII-1/22-1,II-1/25,II-1/25-1,XII/12ofSOLAS1974andamendmentsthereto;

ResolutionMSC.188(79)/Rev.1(2022.4.28)PerformanceStandardsforWaterLevelDetectorsonshipssubjecttoSOLASregulationII-1/25,II-1/25-1andXII/12;;

MSC.1/Circ.1291(2008.12.9)Guidelinesforfloodingdetectionsystemsonpassengerships;

MSC.1/Circ.1572(2020.12.08)UnifiedinterpretationsofSOLASchapterII-1andXII,ofthetechnicalprovisionsformeansofaccessforinspections(ResolutionMSC.158(78))andoftheperformancestandardsforwaterleveldetectorsonbulkcarriersandsingleholdcargoshipsotherthanbulkcarriers(RegulationMSC.188(79)).

IACSUISC180(Rev.1May2004)(Rev.2Nov2005)(Rev.3Mar2012)(Rev.4Feb2021)

Hold,ballastanddryspacewaterleveldetectorsandperformancestandardsforwaterleveldetectorsonbulkcarriersandsingleholdcargoshipsotherthanbulkcarriers(ResolutionMSC.188(79));

ChinaClassificationSociety“RulesforClassificationofSea-goingSteelShips”;

IMOA.1021(26)Codeonalertsandindicator;

IACSURE10(Rev.8)Testspecificationfortypeapproval;

CCSGD22-2015GuidelinesforTypeApprovalTestofElectricandElectronicProducts;

IEC60529:1989+AMD1:1999+AMD2:2013CSVDegreesofProtectionProvidedbyEnclosures(IPCode).

TermsandDefinitions

ThetermsanddefinitionsspecifiedinthereferencesmentionedaboveapplytothisGuideline.

WaterleveldetectormeansasystemcomprisingsensorsandalarmsthatdetectandwarnofwateringressincargoholdsandotherspacesasrequiredinSOLASregulationsII-1/22-1,II-1/25,II-1/25-1orXII/12.

Sensormeansaunitfittedatthelocationbeingmonitoredthatactivatesasignaltoidentifythepresenceofwateratthelocation..

Pre-alarmlevelmeansthelowerlevelatwhichthesensor(s)inthecargoholdspacewilloperate.

Mainalarmlevelmeansthehigherlevelatwhichthesensor(s)inthecargoholdspacewilloperateorthesolelevelinspacesotherthancargoholds.

Visualindicationmeansindicationbyactivationofalightorotherdevicethatisvisibletothehumaneyeinalllevelsoflightordarkatthelocationwhereitissituated.

Audibleindicationmeansanaudiblesignalthatisdetectableatthelocationwhereitissignaled.

Drawingsanddocumentation

ThedrawingsanddocumentationtobesubmittedtoCCSforapproval:

Generalplan;

Mainpartsdiagram;

Panelarrangementplan;

Electriccircuitandpowersupplydiagrams;

Producttechnicalspecifications.

ThedrawingsanddocumentationtobesubmittedtoCCSforreview:

Instructionsforuseoftheproduct(bothinEnglishandChinese);

Softwarespecification(includingprogrammingplatform,softwaretype,softwareversion,softwareflowchart,softwarefunctionetc.,applicabletoproductswithprogrammableelements);

Type,specificationandlistofqualifiedsuppliersofmainrawmaterialsandparts(e.g.sensor,integratedcircuitchip,etc.);

Systemwiringdiagramorhardwareblockdiagram;

Externalwiringdiagram;

Nameplate(bothinEnglishandChinese);

Technicalrequirements

Systemcomponents

Thewaterleveldetectorisasystemcomposedofanumberofsensorsanddisplaydevices.

Methodofwaterleveldetection(MSC.188(79)Rev.1,3.1)

Waterlevelmaybedetectedbythefollowingdirectorindirectmeans:

Indirectmeansofdetection:existenceofwaterisdeterminedthroughphysicalcontactbetweenwaterandthedetector.

Indirectmeansofdetection:includedevicesthatdonotinvolvephysicalcontactwithwater.

Waterleveldetectionsystemistobecapableofoperatingcontinuouslywhiletheshipisnavigatingonthesea.

Requirementsfordetectorsystem

Thedetectionsystemistoprovidereliabledisplaywhenthewaterreachesthepresetlevel.(MSC.188(79)Rev.1,3.2.1)

Useofsensorscapableofdetectingtwopresetlevels(pre-alarmlevelandmainalarmlevel)isallowed.（UISC180,3.2.1）

Thedetectorsystemshould:(MSC.188(79)Rev.1,3.2.2)Forcargoholds:

Analarm,bothvisualandaudible,activatedwhenthedepthofwaterreachesthepre-alarmlevelinthespacebeingmonitored.Theindicationshouldidentifythespace.

Analarm,bothvisualandaudible,activatedwhenthedepthofwaterreachesthemainalarmlevel,indicatingincreasingwaterlevelinacargohold.Theindicationshouldidentifythespaceandthevisualandaudiblealarmshouldnotbethesameasthatforthepre-alarmlevel.

Forcompartmentsotherthancargoholds:Analarm,bothvisualandaudible,indicatingthepresenceofwaterinacompartmentotherthanacargoholdwhenthelevelofwaterinthespacebeingmonitoredreachesthesensor.Thevisualandaudiblecharacteristicsofthealarmindicationshouldbethesameasthoseforthemainalarmlevelinaholdspace.

Detectionequipmentshouldbesuitablycorrosionresistantforallintendedcargoes.(MSC.188(79)Rev.1,3.2.3)Detectionequipmentincludesthesensorandanyfilterandprotectionarrangementsforthedetectorinstalledincargoholdsandotherspaces.(MSC.1/CIRC.1572/Rev.1,9.1)

Thedetectorindicatingthewaterlevelshouldbecapableofactivatingtoanaccuracyof

±100mm.(MSC.188(79)Rev.1,3.2.4)

Detectionequipmentshouldbeofcertifiedsafetypeappropriatefortheintendedcargoes.Thepartofthesystemwhichhascircuitryinthecargoareashouldbeintrinsicallysafeorexplosionproofwithappropriateapparatusgroupandtemperatureclasswhichistobedetermineddependingonthecargocarried.(MSC.188(79)Rev.1,3.2.5)

Ingeneral,theconstructionandtypetestingshouldbeinaccordancewithpublicationIEC60079:ElectricalEquipmentforExplosiveGasAtmospherestoaminimumrequirementofEX(ia).Whereashipisdesignedonlyforthecarriageofcargoesthatcannotcreateacombustibleorexplosiveatmospherethentherequirementforintrinsicallysafecircuitryshouldnotbeinsistedupon,providedtheoperationalinstructionsincludedintheManualrequiredby4.1oftheappendixtotheannexspecificallyexcludethecarriageofcargoesthatcouldproduceapotentialexplosiveatmosphere.Anyexclusionofcargoesidentifiedintheannexshouldbeconsistentwiththeship'sCargoBookandanyCertificationrelatingtothecarriageofspecificallyidentifiedcargoes.

Themaximumsurfacetemperatureofequipmentinstalledwithincargospacesshouldbeappropriateforthecombustibledustsand/orexplosivegaseslikelytobeencountered.Wherethecharacteristicsofthedustandgasesareunknown,themaximumsurfacetemperatureofequipmentshouldnotexceed85ºC.

Whereintrinsicallysafeequipmentisinstalled,itshouldbeofacertifiedsafetype.

Wheredetectorsystemsincludeintrinsicallysafecircuits,plansofthearrangementsshouldbeappraised/approvedbyindividualclassificationsocieties.(MSC.1/CIRC.1572/Rev.1,9.2)

Requirementsforalarmsystem

Thevisualandaudiblealarmsshouldbesuitableforlocationonthenavigationbridge.(MSC.188(79)Rev.1,3.3.1)

VisualandaudiblealarmsshouldconformtotheCodeonAlertsandIndicators,2009,asmaybeamended,asapplicabletoaprimaryalarmforthepreservationorsafetyoftheship.(MSC.188(79)Rev.1,3.3.2)

Thepre-alarm,asaprimaryalarm,shouldindicateaconditionthatrequirespromptattentiontopreventanemergencycondition;themainalarm,asanemergencyalarmshouldindicatethatimmediateactionsmustbetakentopreventdangertohumanlifeortotheship.

Visualandaudiblealarmsaretomeetthefollowingrequirements:(MSC.188(79)Rev.1,3.3.3)

Lightofspecialcolorordigitaldisplayunitclearlyvisibleundervaryingexpectedilluminationconditionsistobeusedforvisualdisplay,andsuchdisplayisnottocauseseriousinterferencewithotheractivitiesrequiredforsafeoperationoftheship.Visibilityofsuchvisualdisplayistobemaintainedunlesstheactivationconditionofthevisualdisplayhasbeenrestoredtoapointbelowthesetvalueofrelevantsensors.Visualdisplayisnottobecapableofbeingclosedbytheoperator.

Thesystemistobecapableofprovidingvisualandauditorydisplayandalarmofthesamesensorinthecompartmentwherethedisplayunitislocated.Auditorydisplayistobecapableofbeingclosedbytheoperator.

Thealarmsignalpanelistobefittedwithswitchesfortestingvisualandaudiblealarmdevicesandtheseswitchesaretobeinoffpositionwhentheyarenotinuse.(MSC.188(79)Rev.1APPENDIX,3.1.2)

Thevisualandaudiblealarmsofwaterleveldetectorsaretobedifferentfromotheralarmsignals.(MSC.188(79)Rev.1APPENDIX,3.2.3)

Timedelaysmaybeincorporatedintothealarmsystemtopreventspuriousalarmsduetosloshingeffectsassociatedwithshipmotions..(MSC.188(79)Rev.1,3.3.4)

Analarmoverridingdevicemaybeinstalledforwaterleveldetectorsincargoholdsortankswhichcanbeusedforwaterballast(SOLASregulationsII-1/25-1andXII/12.1).Anoverridevisualindicationcapabilityshouldbeprovidedthroughoutdeactivationofthewaterleveldetectorforsuchholdsortanks.Wheresuchanoverridecapabilityisprovided,cancellationoftheoverrideconditionandreactivationofthealarmshouldautomaticallyoccuraftertheholdortankhasbeende-ballastedtoalevelbelowthelowestalarmindicatorlevel.(MSC.188(79)Rev.1,3.3.5)

Requirementsformalfunctions,alarmsandindicationsshouldincludeafacilityforcontinuousmonitoringofthesystemwhich,ondetectingafault,activatesavisualandaudiblealarm.Theaudiblealarmshouldbecapableofbeingmuted,butthevisualindicationshouldremainactiveuntilthemalfunctioniscleared.(MSC.188(79)Rev.1,3.3.6)

Faultmonitoringshouldaddressfaultsassociatedwiththesystemthatincludeopencircuit,shortcircuit,aswellasarrangementdetailsthatwouldincludelossofpowersuppliesandCPUfailureforcomputer-basedalarm/monitoringsystem,etc.(MSC.1/CIRC.1572/Rev.1,9.4)

Thewaterleveldetectorsystemshouldbecapableofbeingsuppliedwithelectricalpowerfromtwoindependentelectricalsupplies.Failureofanyofthetwoelectricalpowersuppliesshouldbeindicatedbyanalarm.(MSC.188(79)Rev.1,3.3.7)

Theelectricalpowersupplyshouldbefromtwoseparatesources,oneshouldbethemainsourceofelectricalpowerandtheothershouldbetheemergencysource,unlessacontinuouslychargeddedicatedaccumulatorbatteryisfitted,havingarrangement,locationandenduranceequivalenttothatoftheemergencysource(18hours).Thebatterysupplymaybeaninternalbatteryinthewaterleveldetectorsystem.

Ifthebackuppowersupplyisnotaninternalbattery,thechangeoverarrangementofsupplyfromoneelectricalsourcetoanotherneednotbeintegratedintothewaterleveldetectorsystem.

Wherebatteriesareusedforthesecondarypowersupply,failurealarmsforbothpowersuppliesshouldbeprovided.(MSC.1/CIRC.1572/Rev.1,9.5)

WaterleveldetectorsaretobeprovidedwithwarningandmainalarmoutputinterfacetoVDR.

ForflooddetectorsystemrequiredbySOLASregulationII-1/22-1,thevisualandaudiblealarmsshouldconformtotheCodeonAlarmsandIndicators,asmaybeamended,asapplicabletoaprimaryalarm.（MSC.1/Circ.1291）

protectionoftheenclosure:(MSC.188(79)Rev.1APPENDIX,,2.1.2)

Protectionoftheenclosuresofelectricalcomponentsinstalledinthecargoholds,ballasttanksanddryspacesshouldsatisfytherequirementsofIP68inaccordancewithIEC60529.Thewaterpressuretestingoftheenclosureshouldbebasedonapressureheadheldforaperioddependingontheapplication.Fordetectorstobefittedinholdsintendedforthecarriageofwaterballastorballasttankstheapplicationheadshouldbetheholdortankdepthandtheholdperiodshouldbe20days.Fordetectorstobefittedinspacesintendedtobedrytheapplicationheadshouldbethedepthofthespaceandtheholdperiodshouldbe24h.

ProtectionoftheenclosuresofelectricalequipmentlocatedonthedeckaboveballastandcargospacesshouldsatisfytherequirementsofIP56inaccordancewithIEC60529.

Equipmentwhichistobeusedinrefrigeratedcargospacesshouldsatisfytherequirementsofasuitableindustrystandardcoveringtherelevantservicetemperatures.(MSC.188(79)Rev.1APPENDIX,2.1.3)

Materialsandcomponents

MaterialsandcomponentsshouldbecontrolledbytherelevantrequirementsofCCScurrentrules.

Thetypeandspecificationsofsensorsaretobeexpresslyindicatedintheapprovalcertificateandcontrolledbythelistofapprovedandqualifiedsuppliers.Whereapprovedsensorsaretobereplacedbysensorsofothertypes,CCSproductcertificateistobepresentedorthecorrespondingtypetestistobeperformed.

Typetest

Typetestitems

Table7.1typetestitems

No.

Testitems

Chapterofthisguideline

Note

1

Levelalarmfunction

5.3.1；5.3.2；5.4.2

-

2

Audibleandvisualalarm

5.4.3

-

3

Timedelayforalarm

5.4.4

-

4

Detectingaccuracy

5.3.4

-

5

Alarmoverride

5.4.5

-

6

Faultmonitoringandalarm

5.4.6

Shouldincludeopencircuit,shortcircuit,and

CPUfailureforcomputer-basedalarm/monitoringsystem,etc.

7

Powersupplyswitchandalarm

5.4.7

-

8

OutputinterfacetoVDR

5.5

-

9

Detectordevicewaterpressuretest

ThepressureandsubmergedperiodofthistestcanbenotedintheTypeApproval

CertificateandtheProductCertificate.

10

Detectordeviceimmersiontest

-

11

Protectionofenclosuretest

5.7

TheIPcodeofthosecomponentsnotmentionedinthisguideline,shouldmeettherequirementofCCSRulesforclassificationofsee-goingsteelships.

Thetestshouldbecarriedoutaccordingto

IEC60529.

12

electricalpowersupplyfailure

test;

AccordingtoCCS“GuidelinesforType

ApprovalTestofElectricandElectronicProducts”andIACSURE10

-

13

powersupplyvariationtest;

-

14

Dryheat

-

15

Lowtemperature

-

16

Dampheat

-

17

Vibrationtest

-

18

Insulationresistancetest

-

19

High-voltagetest

-

20

inclinations

ifmovingpartsarecontained

21

Electromagneticcompatibility

test

-

Detectorequipmentperformancetest

HydraulictestTechnicalrequirements:

Protectionoftheenclosuresofelectricalcomponentsinstalledinthecargoholds,ballasttanksanddryspacesshouldsatisfytherequirementsofIP68inaccordancewithIEC60529.Thewaterpressuretestingoftheenclosureshouldbebasedonapressureheadheldforaperioddependingontheapplication.Fordetectorstobefittedinholdsintendedforthecarriageofwaterballastorballasttankstheapplicationheadshouldbetheholdortankdepthandtheholdperiodshouldbe20days.Fordetectorstobefittedinspacesintendedtobedrytheapplicationheadshouldbethedepthofthespaceandtheholdperiodshouldbe24h.(MSC.188(79)Rev.1APPENDIX,2.1.3)

Testmethod:

ThetestshouldbecarriedoutaccordingtoIEC60529IPX8.

Testpressure:basedonthedepthofthespacewherethedetectorsapply.

Thesubmergedtestperiodforelectricalcomponentsintendedtobeinstalledinballasttanksandcargotanksusedasballasttanksshouldbenotlessthan20days.

Thesubmergedtestperiodforelectricalcomponentsintendedtobeinstalledindryspacesandcargoholdsnotintendedtobeusedasballasttanksshouldbenotlessthan24hours.

Wheredetectorsand/orcableconnectingdevices(e.g.junctionbox,etc.)areinstalledinspacesadjacenttocargoholds(e.g.lowerseat)andsuchspacesaredeemedfloodedduringcalculationofdamagestability,suchdetectorsanddevicesaretocomplywiththerequirementsofIP68forwaterhead.Thewaterheadistobeequivalenttothetankdepth.Thetestduration,either20daysor24h,istobedeterminedbasedonwhetherthetanksdescribedintheprevioustwopointsareintendedtobeusedasballastwatertanks.

ImmersiontestTechnicalrequirements:

Operationincargo/watermixtureforaselectedrangeofcargogroupssuchasironoredust,coaldust,grainsandoilsusingseawaterwithasuspensionofrepresentativefinematerialforeachcargogroup.Fortypetestpurposesanagitatedsuspensionofrepresentativefinematerialsinseawater,withaconcentrationof50%byweight,shouldbeusedwiththecompletedetectorassemblyincludinganyfiltrationfitted.Thefunctioningofthedetectionassemblywithanyfiltrationarrangementsshouldbeverifiedinthecargo/watermixturewithimmersionrepeatedtentimeswithoutcleaninganyfiltrationarrangements.(MSC.188(79)Rev.1APPENDIX,)

Testmethod:

①Thetestcontainerforthecargo/watermixtureistobedimensionedsothatitsheightandvolumearesuchthatthesensorandanyfiltrationfittedcanbetotallysubmergedfortherepeatedfunctionalitytestsrequiredbyimmersiontestandthestaticanddynamic

inclinationtestsidentifiedinthepreviousinterpretation.Thedetectorandanyfilterintendedtobeimmersedandinstalledinthecontaineraretobeinstalledaccordingtotheinstructionsforinstallationcontainedintheequipmentmanual.

②Thepressureinthecontainerfortestingthecompletedetectoristobenotmorethan0.2baratthesensorandanyfilterarrangement.Thepressuremayberealizedbypressurizationorbyusingacontainerofsufficientheight.

③Thecargo/watermixtureistobepumpedintothetestcontainerandsuitableagitationofthemixtureprovidedtokeepthesolidsinsuspension.Theeffectofpumpingthecargo/watermixtureintothecontainerisnottoaffecttheoperationofthesensorandfilterarrangements.

④Theargo/watermixtureistobepumpedintothetestcontainertoapredeterminedlevelthatsubmergesthedetectorandtheoperationofthealarmobserved.

⑤Thetestcontaineristhentobedrainedandthede-activationofthealarmconditionobserved.

⑥Thetestcontainerandsensorwithanyfilterarrangementaretobeallowedtodrywithoutphysicalintervention.

⑦Thetestprocedureistoberepeatedconsecutivelytentimeswithoutcleaninganyfilterarrangementthatmaybefittedinaccordancewiththemanufacturer’sinstallationinstructions.

⑧Satisfactoryalarmactivationandde-activationateachofthetenconsecutivetestswilldemonstratesatisfactorytypetesting.

Thecargo/watermixtureusedfortypetestingaretoberepresentativeoftherangeofcargoeswithinthefollowinggroupsandistoincludethecargowiththesmalle