Watertight Doors on Ships船上水密门

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1、WatertightDoorsonShips:AGeneralOverviewFebruary15,2011ByMohit2CommentsWatertightdoorsarespecialtypesofdoorsfoundontheshipswhichpreventtheingressofwaterfromonecompartmenttootherduringfloodingoraccidents.Thesedoorsareusedonboardinareaswherechancesoffloo

2、dingarehigh.Areassuchasengineroomcompartmentsandshafttunnelandsomearefewofsuchplaces.Thesedoorsarecategorizedintothreetypes,whichgoverntheoperationofthewatertightdoors.DifferentTypesofWatertightDoorsonShipsTYPEAThistypeofdoorsmaybeleftopenandaretobecl

3、osedonlyduringanemergency.TYPEBThistypeofwatertightdoorsshouldbeclosedandaremadetoremainopenonlywhenpersonnelareworkingintheadjacentcompartment.TYPECThistypeofwatertightdoorsistobekeptclosedallthetime.Itmaybeopenedonlyforsufficienttimewhenpersonnelare

4、passingthroughthedoorcompartment.HazardousConditionfortheShipWhentheDoorsNeedtobeCloseda)Whenthereisarestrictedvisibility.b)Inportswheretheportlimitsoffcompulsorypilotagelimits.c)Requiredtobeclosedwhenthedepthofwaterislessthan3timesthedraught.d)Hightr

5、afficdensity.e)Otherfactorswhenthemasterfeelsthattheconditionisdangerous.WatertightDoorsWatertightdoorsdrillonships1.Drillsfortheoperationofwatertightdoorsshalltakeplaceeveryweek.Alsothedoorsshouldbecheckedbeforeleavingtheport.2.Allwatertightdoors,bot

6、hhingedandpoweroperatedshouldbeoperateddailyduringtherounds.3.Thedoorshouldbeabletooperatefrombothlocalandremoteplaces.I.e.bridgeandshipcontrolcenter.4.Ifdoorisoperatedfromremotelocation,thereshouldbeanaudioandvisualalarmduringclosing,5.Thereshouldbei

7、ndicationofbothopenandcloseontheremoteplaceofoperation.SolasRegulationsRegardingClosureofWatertightDoors(AsperSolasregulation,SOLASchapterII-1,watertightdoorsfromregulation14toregulation25)1.Allthepoweroperateddoorsmustbecapableofclosingsimultaneously

8、frombridgeandShipControlCenter(SCC)innotmorethan60secondswhentheshipisinuprightcondition.2.Thedoorshallhaveanapproximateuniformrateofclosureunderpower.Theclosuretime,fromthetimethedoorbeginstoclosetothetimeitclosescompletelyshallbeinnocaseless