071 final ASEF PSPCppt_OBATA [互换モード]

Useful andReliable Technology for PSPC Automated SolubleSalt MeasurementandFurtherChallenges BeyondNovember2010y pToday’s Topic•Issues for PSPC, shipbuilding industry is facing •Countermeasures and Action• Challenges Beyond forFurther PSPC2Outline of PSPCCoatings)) (Performance Standard for Protective Coatings •IMO Resolution MSCMSC..215215((8282))PSPC for Seawater Ballast Tank •IMO Resolution MSCMSC..28888(87()PSPC for Cargo Oil Tank(Non‐mandatory guideline)•PSPC for Void space•PSPC for PMA•Guidelines for Maintenance and repair3Major Requirements by PSPCfor SBT and COT •Blasting for2nd surface treatment •Approved coating system•Multi‐coating•320micron on DFT under90/10rulei d l•DFT to be measured at many points •Edge treatment•Soluble Salt Measurement•Coating Technical File(CTF)4Soluble Salt MeasurementPSPC required:Water soluble salts limit, equivalent to NaCl : 50 mg/m2 Conductivity measured (ISO 8502‐9:1998)Blister5required by PSPCl h h dISO8502‐9: Bresle Patch MethodInjecting6required by PSPCExtracting7Method of Soluble Salt measurementrequired by PSPCMeasured ElectricConductivity(μS/cm)i ConversionRatioDensity ofsoluble salts Water(mg/m 2)50mg/m 8< 2Water Leakageabout 20%*Failure with 20% chance!9*NAMURA’s dataGLUE remains on steel surface10We have a GOOD METHOD!11Automated method12Copied from ARP web siteDetectorD t tElectricStirreri ill dMagnet Distilled water Main Unit13Injecting Distilled water into Cell14Extraction –Stirring Commences15Measurement at block stageMajority of Japanese shipyards are already using Automated tool extensively.16MethodsComparison of Measurement ISO 8502‐9Bresle patch method Automated method17Comparison of Measurement Methods ITEMBresle Patch method Automated method DetectionMethodElectric Conductivity method Electric Conductivity method SamplingArea 1250 mm 21250 mm 2p g Measurement・Conductivity Cal to concentration ・Conductivity ・Convert to NaCl concentration Calculation・Cal. NaCl Automatically Consumables Water, Patch Water18Methods Comparison of Measurement Bresle patch method Automated methodNO GLUEGLUE remained19Advantages of Automated method Reliability•Less human error•Reliable resultsQuality•No Glue remainedEnvironmental friendly•Less consumables(Patches)20However ・・・・Bresle Patch methodAutomated method ISO8502‐9COT PSPC(MSC 288(87)Available*Available(MSC.288(87)SBT PSPC(MSC 215(82)NOT Listed Available (MSC.215(82)21* After adopted at MSC.88y pAction by Japan Submitted a paper toIMO DE DE5151(20082008//2)ofProposed to useAutomated ISO 8502‐9(for SBT PSPC)22Action by NACE InternationalyDeveloped and proposed the standard:SP0508‐2010 “Standard practice methods of validating equivalence to ISO 8502‐9 onl d lmeasurement of the levels of soluble salts”Submitted a paper IMO MSC.88(2010/12)S b itt d MSC88(2010/12)pand will be accepted for COT PSPC.23Action by NACE InternationalMSC 88NACESP0508‐2010MSC.88for COT PSPCEQUIVALENCEISO 8502‐9 Breslepatch method Automated method24gComing Action at ISO October 2010～ISO/TC8/SC8: “Ships and marine technology –Protective coatings and inspection method –Measuring method water soluble salts”(for SBT PSPC & COT PSPC)Proposed by JAPAN (JASTRA) Secretariat: KOREA (KATS)Target date for availability:July201325Road to IMOISO Standard for “Automated method”for SBT PSPC and COT PSPCProposing to revise SBT PSPCforavailability“Automated soluble salts method”26Alternative Technology / Systemfor PSPCRetain and improve,d・Quality of ship(Tank coating)・Safety of ships’ operation・Protection of the environment Alternative technology should be proposed through the review of PSPC.27ChallengesFurther BeyondNOW, Shipbuilding industry should address to verify the PSPC through some experiences,d h l din order to improve the quality andp y pproductivity of ship’s construction.28Challenges Beyond Further h b ld d h ld Asian shipbuilding industry should continue to cooperate and work well together in p g ・Sharing perceptions,・Addressing to reviewrevise the PSPCandfor our future.29THANK YOU FOR YOURKIND ATTENTION30質疑用資料3132Comparison of Measurement Methods Bresle Patch method Automated methodSampling Bresle Patch and injector Fix to plate with powered stirringDetectionMethodElectric Conductivity method Electric Conductivity method Work Time10 min.3 min.Pure WaterConsumption10 ml10 mlS li ASampling Area1250 mm21250 mm2Measurement・Conductivity MeasurementC l l N Cl・Conductivity MeasurementC N Cl iCalculation ・Calculate to NaClconcentration・Convert to NaCl concentrationby software33Consumables Water, Patch Water34Salt Concentration in Relation toConductivityC d i iISO 8502-9 Figure 135Measured Surface Can beA O i t ti Any OrientationDownward-horizontal surfaceDownwardinclined surfaceVertical surfaceUpward inclined Upward-horizontal surfacepsurface36Automated Methods for ISO 8502Automated Methods for ISO 8502--6/9HEDON/ARP : S l bl S l M NST Center :S l S DKK-TOA : SurfaceSoluble Salt MeterSalt SmartSalinity Meter37From ARP WebsiteFrom IMCS 2008 NST presentation。