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DOFIRI.-2001-11 ( Appendix I - Decommissioning Technofogy Applications Rev. p l Dr t(f3 Redline/Strikcut n 1 1.1.2.2 Dusting, Vacuuming, Wiping, and Scrubbing. This technique refers to physical 2 removal of dust and particles from building and equipment surfaces by using common cleaning 3 techniques. 4 5 1.1.2.3 Fxative/Stabilizer Coatings. Various agents can be used as coatings on contaminated 6 residues to fix or stabilize the contaminant in place and dccrease or eliminate exposure hazards. 7 No removal of contaminants is achieved. 9 1.1.2.4 Turbulator. A turbulator is a large tank with propellers that direct the flow of a cleaning 10 solution across a component. I1 12 1.1.2.5 Metal-Based Paint Removal. Metals such as lead, cadmium, chromium, and mercury 13 have been used as ingredients in paints used to coat the interior surfaces of buildings. In some 14 instances, these paints (especially lead) may still be used to coat piping and other metallic 15 structures or components. If decontamination of any such surface is required, use of paint- 16 removal techniques could be used. 17 18 1.1.2.6 Strippable. The use of a strippable coating involves the application of a polymer 19 mixture to a contaminated surface. As the polymer reacts, the contaminants are stabilized, 20 becoming entrained in the polymer. In general, the contaminated layer is pulled off, ("""^21 containerized,and disposed. 22 23 1.1.2.7 Steam Cleaning. Steam cleaning physically extracts contaminants from buildings and 24 equipment surfaces. The steam is applied using hand-held wands or automated systems, and 25 condensate is collected for treatment. 26 27 I.1.2.8 Sponge Blasting. This technique was originally developed for the painting industry as a 28 surface-preparation activity. This technique cleans by blasting surfaces with various grades of 29 foam-cleaning media ( i.e., sponges). The sponges are made of a water-based urethane. During 30 surface contact, the sponges expand and contract, creating a scrubbing effect. Most of the energy 31 of the sponges is transferred onto the surface being cleaned. 32 33 1.1.2.9 CO2 Blasting. This method is a variation of grit blasting in which CO2 pellets are used 34 as the cleaning medium. Small dry-ice pellets are accelerated through a nozzle using 35 compressed air at 4 to 8 kg/cm2 (50 to 250lblini). The pellets shatter when they impact the 36 surface, and the resulting kinetic energy causes them to penetrate the base material and shatter it, 37 blasting fragments laterally and releasing the contaminant from the base material. 38 39 1.1.2.10 Wet-Ice Blasting. This technique is similar to other decontamination technologies that 40 direct a high-velocity stream of fine particles such as steel pellets, plastic pellets, or glass beads 41 onto a surface to remove contamination. This system employs low-pressure air and wet ice for 42 cleaning and surface preparation. Because this system uses water in the form of ice as its r"N 43 medium, no other consumables are required. 44 Fina Srudy jor the Canyon Disposition Initiotive (221-U Facility) Ò.^ibifity lanoi2U 1-3
^ DOF/RL-2001-11 I Appendix I - Decommissioning Technology Applications Rev. 01 Draf Red lin cil trik eo u t 1 1.1.2.11 Hydrobiasting. In this technology, a high-pressure 70 kg/cm2 (>10P ]bfin2) water jet is 2 used to remove contaminated debris from surfaces. The debris and water are then collected, 3 treated, and disposed. 5 1.1.2.12 Ultra-High-Pressure Water. In this technique, water is pressurized up to 379,225 kPa 6 (55,000 psi) by an ultra-high-pressun; intensifier pump. The water is then forced through a 7 small-diameter nozzle that generates a high-velocity water jet at speeds of up to 914 m/s 8 (3,000 ft/s). 9 10 1.1.2.13 Shot Blasting. Shot blasting is an airless method that strips, cleans, and etches the 11 surface simultaneously. The technique is virtually dust free, so the potential for airbome 12 contamination is very low. Portable shotblasting units move along the surface that is being 13 treated as the abrasive is fed into the center of a completely enclosed centrifugal blast whecl. As 14 the whecl spins, the abrasives are hurled from the blades, blasting the surface. The abrasive and 15 removed debris are bounced back to a separation system that recycles the abrasive and sends the 16 contaminant to a dust collector. Larger shot removes more concrete, and the etch depth can be 17 controlled by varying the speed of the unit. Units are available that can remove a surface up to 18 0.63 cm (0.25 in.) thick in a single pass. 19 20 1.1.2.14 Wet Abrasive Cleaning. A wet abrasive cleaning system is a closed-loop, liquid (--^'21 abrasive (wet grit blasting) decontamination technique. The system uses a combination of water, 22 abrasive media, and compressed air and is applied in a self-contained, leaktight, stainless steel 23 enclosure. The system uses a high
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AR TARGET SHEET The following docum
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(^N r^ r Proposed Plan for the Cany
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(^N (0-^, (^N 1 2 3 r• • .`•
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^ (^N t^ the steHitFths+amedielaeti
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o"N DOF/RIr2001-29 Draft D Redline/
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(^N i0,"% / ' DOF/RL-2001-29 Draft
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I f^ ^ DOE!RL-2001-29 Ikaft D Redli
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! ' t^ Project Prepare the existing
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f ' ^ rN 100 I Noise, Visual, and A
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^ POINTS OF CONTA CP ^ U.S. Drnartm
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f^ n DOF/RL-2001-29 Draft D Redlinc
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noFIRL-2001-11 Rev. p 1 1)raft P ^
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. . .,.. Appendix C - Risk Modeling
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t^ Appendix C - Risk Modeling of an
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(_^% ^ ^ 11 Appendix C - Risk Model
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1 ' ^ ^ DOEJRL-2001-1 t Rev.H1 nraf
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Appendix D- Slope Stability Analysi
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Appendix D - Slope Stability Analys
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^ Appendix D-- Slope Stability Anal
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