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DOFJ[ti.-2001-I 1 Appendix I - Decommissioning Technology Applications [tev.0 D raft I; RcdlinclStrikcout n 1 crane instability during the swing and after impact. The latter method is not recommended 2 because the target area is more difficult to hit and the ball may ricochet off the target and damage 3 adjacent structures while putting side leads on the crane boom. The flat slab may only be used in 4 the vertical drop mode, but offers the advantage of being able to shear through steel-neinforcing 5 rods as well as concrete. 6 7 The wrecking ball or slab is recommended for nottradioactive concrete structures less than 0.9 in 8 (3 ft) in thickness. It would be virtually impossible to control the release of radioactive dust 9 during demolition due to the access needed for the crane to drop or swing the ball. For 10 nonradioactive structures, the wrecking ball Is an effective method and provides good 11 fragmentation to expose reinforcing rods. 12 13 1.3.3 Backhoe-Mounted Rams 14 15 Backhoe-mounted rams are used for concrete structures less than 0.6 m(2 ft) thick with light 16 n:inforcement. The method is ideally suited for low-noise, low-vibration demolition. and for 17 interior demolition in confined areas. The equipment consists of an air- or hydraulic-operated 18 impact ram with a moil or chisel point mounted on a backhoe arm. With the ram head mounted 19 on a backhoe, the operator has approximately a 6- to 7.6-m (20- to 25-ft) reach and the ability to 20 position the ram in limited access structures. The ram is recommended for applications with ('-121 limited access for heavy equipment, such as a wrecking ball, and where blasting is not pcrtnitted. 22 23 I.3.4 Rock Splitter 24 25 The rock splitter is a method for fracturing concrete by hydraulically expanding a wedge into a 26 pre-drilled hole until tensile stresses are large enough to cause fracture. The tool consists of a 27 hydraulic cylinder that drives a wedge-shaped plug between two expandable guides (called 28 feathers) inserted in the pre-drilled hole. Concrete may be separated at the fracture line using a 29 backhoe-mounted air ram or similar equipment. The reinforcing rod in reinforced concrete must 30 be cut before separation is possible. The splitter is ideally suited for fracturing concrete in 31 limited access areas where large air rams cannot operate. Reinforced concrete sections up to 32 2.4 m (8 ft) thick may be cut with a single large unit. Reinforced concrete sections 3 m (10 ft) 33 thick will require two or more large units to operate simultaneously. 34 35 I33 Bristar Demolition Compound 36 37 Bristar concrete demolition compound is a chemically expanding compound that is poured into 38 pre-drilled holes and causes tensile fractures in the concrete upon hardening. Bristar is a 39 proprietary compound of limestone, siliceous material, gypsum, and slag. Cracks will form and 40 propagate along the fracture line. The crack width will range between 0.63 cm (0.25 in.) after 41 10 hours to almost 5 cm (2 in.) after 15 hours. The fractured burden may then be removed with a 42 paving breaker, backhoe, or bucket loader. If a reinforcing rod is encountered, it must be cut 43 separately. The compound is not classified as a hazardous substance and can be readily stored 44 and handled. Bristar is suited for use on massive nonreinforced concrete structures where noise, Final Feasibility Study jor the Canyon Disposition fnitiative (221-U Facility) ^ luas 2,003 I-11
^ n ^ DOF1RG2001-11 Appendix I - Decommissioning Techno{ogy Applications Rev. AI raft edtine%Strikcout 1 vibration, flyrock. dust, or gas must be avoided. It is not recommended for slabs of concrete less 2 than 30 cm (12 in.) in thickness. 3 4 1.3.6 Paving Breakers and Chipping Hammers 6 Paving breakers and chipping hammers remove concrete (and asphalt) by mechanicalty 7 fracturing localized sections of the surface. Fracturing is caused by the impact of a hardened tool 8 steel bit of either a compressed air or hydraulic fluid pressure source. Paving breakers are 9 recommended for use on floors to remove small areas that are inaccessible for heavy equipment. 10 They may also be used to expose reinforcing rods after controlled blasting to permit cutting of 11 the rods. 12 13 14 IA REFERENCE 15 16 DOE, 1994, U.S. Department ojEhergy Decommissioning llandbook, DOE/EM-0142P, 17 U.S. Department of Energy, Washington, D.C. 18 Final Feasibifiry Stwdy jor the Canyon Disposition Initiative (221-U Facility) ^ 1Jin£ 200 1-12
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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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i^ f 1 2 3 S 6 7 8 9 11 12 13 14 15
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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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^ ^ 1 2 DOFJRL-2001-11 Rev.A 1 Dra(
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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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(^N Appendix D- Slope Stability Ana
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• Appendix D-Slope Stability Anal
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^• r^, r^ 2 3 4 5 6 7 Appendix D-
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^ Appendix D-- Slope Stability Anal
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t^` ^ ^ 1 2 DOFJRL-2001-11 Rev. JDr
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Appendix E - Detailed Description o
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Appendix E- Detaiied Description of
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t^' Appendix E -Detailed Descriptio
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Appendix F - Detailed Description o
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Appendix F -Detailed Description of
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Appendix T- Detailed Description of
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Appendix F -Detailed Description of
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(O^N Appendix F - Detailed Descript
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Appendix E- Detailed Description of
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..^•. , Appendix F- Detailed Desc
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Appendix F-Detailerl Description of
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^ (10^' (^N DOF/RL-2001-11 Rev. AjD
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^N r^ 1 n DOF/RLr2061-1 l ' Rev. I
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1 ^ (^N ^ DoFJRL-M-t t ^ Rev. I Dnf
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Appendix G -Detailed Description of
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Appendix G- Detailed Description of
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