3000002c压载舱牺牲阳极计算书

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1、CALCULATIONOFSACRIFICIALANODESINBALLASTTANKS3000002CP4/41.GENERALDESCRIPTION说明1.1Thealuminumalloysacrificialanodeswithboltingtypeshallbefittedinwaterballasttanksincludingpeaktanks.ThedesignofcathodicprotectionbymeansofsacrificialanoderefertothestandardGB8841-88.本船压载水舱包括艏艉

2、尖舱内将安装螺栓连接型式的铝合金牺牲阳极，用牺牲阳极作阴极保护的设计参照GB8841-88标准。1.2Thecalculationofaluminumanodesforwaterballasttankstobeaccordingtothecontractspecificationasfollowingdesigncondition.Lifetime:five(5)yearsBallastratio:50%Meancurrentdensity:5.4mA/m2压载水舱铝合金阳极根据“建造说明书”按如下设计条件计算：使用寿命5年压载率50%保

3、护电流密度5.4mA/m21.3Theproductsofaluminumanodeswith5yearslifetimeshouldbeaccordingtomanufacturer’srecommendationandtheBuilder’spractice.使用寿命为5年的铝阳极可以采用制造厂商推荐的或建造厂成熟的产品。2.CHEMICALCOMPONENTOFAL-ANODES(%)铝合金牺牲阳极的化学成分TYPE种类COMPOSITION化学成分ZnInCdImpurityMax杂质，不大于AlSiFeCuA11GB/T4948

4、-2002铝-锌-铟-镉2.5~4.50.018~0.0500.005~0.0200.100.150.01Excess余量3.THEAL-ANODESPARAMETER选用铝合金牺牲阳极的参数STANDARD标准号TYPE型号CURRENT（If）发生电流值（If）CURRENTCAP.实际电容量SIZE尺寸NETWT.净重(kg/Pec. )GROSSWT.毛量(kg/块 )GB/T4948-2002A11T-635mA2400Ah/kg495×140×~559.0~104.QUANTITYOFANODESCALCULATION牺牲阳极

5、用量计算ITEM保护部位TYPE型号N.WEIGHTCURRENTPRO.AREAPRO.CUR.TOTALCUR.T.QUA.P.QUA.净重量电流值保护面积保护电流总电流需要量实配Kg/pec.mAm2mA/m2mAPec.块Pec.块AFTPEAKTK.(W.B.)艉尖舱（压载水舱）A11T96354263.605.423023.4418.118NO.10DB.W.B.TK.NO.10底压载水舱A11T96351804.005.49741.607.78NO.9W.B.TK.(P&S)NO.9压载水舱（左/右）A11T96354610

6、.405.424896.1619.620/20NO.8W.B.TK.(P&S)NO.8压载水舱（左/右）A11T96355108.755.427587.2521.722/22NO.7W.B.TK.(S)NO.7压载水舱（右）A11T96357298.125.439409.8631.032CALCULATIONOFSACRIFICIALANODESINBALLASTTANKS3000002CP4/4NO.7W.B.TK.(PL)NO.7压载水舱（左下）A11T96354661.005.425169.4019.820NO.7W.B.TK.(P

7、U)NO.7压载水舱（左上）A11T96352725.565.414718.0211.612NO.6W.B.TK.(P&S)NO.6压载水舱（左/右）A11T96357386.595.439887.5831.432/32NO.5W.B.TK.(P&S)NO.5压载水舱（左/右）A11T96357386.595.439887.5831.432/32NO.4W.B.TK.(P&S)NO.4压载水舱（左/右）A11T96357386.595.439887.5831.432/32NO.3W.B.TK.(P&S)NO.3压载水舱（左/右）A11T9

8、6357644.555.441280.5532.533/33NO.2W.B.TK.(P&S)NO.2压载水舱（左/右）A11T96357316.735.439510.3231.132/32NO