1 Metal Qty (mg/kg) Navy Water Jet Demonstration System Waste Analysis

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1 i MV41 SEA SYSTEMS COMJWND Navy Water Jet Demonstration System Waste Analysis The majority of the solids in the waste stream are removed by the vibratory shaker table. This waste is constituted mainly of paint chips.. Waste Analysis 1 Metal Qty (mg/kg) Zinc 67 Lead 217 Barium 195 Selenium <2 Copper 296, Nickel 329 Chromium 234 Taken from I JSS NIMITZ job NS #WC Carderock lune 1995

2 Navy Water Jet Demonstration System USS NIMITZ (CVN 68) Underwater Hull Stripped -5 sq ft of underwater hull area 6-coat International FP and BRA Series paint, DFT 3 to 4 mils, excellent condition Stripping rate of 136 sq ft/hr Selective stripping of 1Y antifoulant coating at 2, PSI and 22 sq ft/hr Virtually no flash rust NSWC Carderock June 1995

3 Navy Water Jet Demonstration System USS NIMITZ (CVN 68) Flight Deck Stripped 84 sq ft of non-skid from flight deck Stripping rate of 22 sq ft/hr Virtually no flash rust NSWC Carderock Jrtne I995

4 NAVAL SEA BYSTEMS COMMAND..,. >:.:...:...:.:.:.;....,.,. I..,..I....,...../..;,.,.,.,,.,A. i,.,.,. Navy Water Jet Demonstration System USS Sturgeon (SSN 637) Tested complete and selective stripping of -2, sq ft Removal of 5-coat system at 168 sq ft/hr Selective stripping, removing 8% of the coating system at 35 sq ft/hr Preliminary production run, 55 sq ft removed in 6 hours Chloride contamination results showed less then 2 pg/cm2 Original surface pro file of 2-3 mils was reta ined Virtually no flash ru sting NSWC C arderock June 1995

5 Navy Water Jet Demonstration System On USS LEFTWICH (DD 984) Removed 17,214 sq. ft. of freeboard paint at PHNSY Removed over 95% of the 5 coat system at a stripping rate of 25 sq. ft. hr Surface inspected by NAVSEA 3M and approved to paint over Virtually no flash rusting All surface chloride levels were below 1.3 pg/cm2 NSWC Carderock June 1395

6 System working around containments for sonar dome and organotin removal NSWC Carderock June 1995

7 Navy Water Jet Demonstration System On USS LEFTWICH (DD 984) RESULTS: Average removal rate 183 sq ft per shift Best day 921 sq ft Waste reduction reduced from 216,1bs if abrasive grit was used to 4,1251bs with HP water, a 5 to 1 reduction Containment, disposal, and clean-up costs $8, NSWC Carderock Jitne 1935

8 UAL AL SEA SYSTEMS: COMMAND Navy Water Jet Demonstration System On USS Paul Foster (DD 984) Removed -11, sq ft of underwater hull and freeboard paint under RADM M.T. Coyle reduced Maintenance Pilot Program NSWC Carderock June 1995

9 ,,,,.,,,,A.., Navy Water Jet Demonstration System Surface Contaminants High pressure water provides an ultra clean surface which virtually removes all surface contaminants. All readings taking for salts on the surface have been below 2 pg/cm2 which is below the new recommended SEA 3M limit I NSWC Carderock June 1995

10 Navy Water Jet Demonstration System Need for Hand Held Unit Demonstration system can not access all areas of ship hull NSWC Carderock June 1995

11 First tested at LBNSY in March of 95 Modifications being made, additional testing to be performed at PSNSY from May to June of 95 NSWC Carderock Jiini, 1995

12 MPAL SEA SYSTEMS COMMdND Navy High Pressure Water Jet Demonstration System Advantages and Benefits Operational - Provides cleaner surface for recoating - Creates a grit-free environment for sailors and equipment Financial - Eliminates containment systems - Reduces waste, disposal costs and drydock cleanup - Reduces drydock time for ship - Lowers manpower requirement - Ability to selectively strip - Widespread benefit to all DoD and Commercial Industry Environmental - Reduces waste stream - Workers not subjected to harmful environment - Eliminates chance of waste getting into environment Bottom Line - High Pressure water is an environmentally conscious method for paint removal NSWC Carderock June 1995

13 I, Program Navy Water Jet Demonstration System Schedule Contract Mod Needs Analysis Prel i mi nary/deta i I Desig n FabricationlProcurement Contractor Testi ng Shipyard Demo (PSNSY) USS LEFTWICH (PHNSY) Production Enhancement USS RESOURCEFUL (GAUM) USS LINCOLN (PSNSY) I I I I I I I I l l I l l I l l A I, I I I f I d I 1 Proc. of Follow-on Units I 1 USS PAUL FOSTER (LBNSY) I USS SEAHORSE (PSNSY) I Io NSWC Carderock June I995

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