RSRL Integrated Waste Strategy - Issue 5- Oct 2012.pdf

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NOT PROTECTIVELY MARKEDliquid effluent took place. In addition, a high efficiency filtration unit was installed to filter andremove most of the finer entrained solids remaining after clarification, prior to discharge tothe sea.338. Therefore the current practice of prior treatment followed by direct discharge via the seapipeline continues to be the baseline strategy as it is for liquid foul effluent.7.2.1.4 Tritiated Groundwater339. Tritium contamination at very low concentrations is present in the groundwater on partsof the Winfrith site. During demolition operations across the Winfrith site, some operationswill involve excavation below ground level. These areas may become flooded withgroundwater, creating difficult operating and safety environments. These problemsassociated with groundwater can be overcome by dewatering. It is the management ofthese dewatering effluent arisings that are considered under this waste stream. Themanagement of the radiologically contaminated water extracted from under the nowdecommissioned Active Handling Complex is considered under the Active Liquid ProcessEffluent as the radioactivity is caesium and strontium rather than tritium.340. The site waste BPEO Study considered three options for the management of the tritiatedgroundwater: discharge to the River Win/Frome; discharge to sea using ALES; and pumpingback into the ground. In spite of the obvious environmental benefits of discharging thetritiated ground water to sea via the ALES, the risks to plant and operators from having todeal with large volumes of water above the equipment’s design capacity make this animpracticable option. Given the very low levels of tritium within the ground water, dischargeof the effluent to the River Win/Frome offers a robust management strategy, subject tomaintenance of strict controls with respect to ensuring the removal of silt prior to dischargeand controls of effluent flow rates into the river tributary. The management option ofpumping the water back into the ground offers a potential future strategy/opportunity if therewere problems with discharging the ground water to the river, however it would require moredetailed investigation before it could be practically implemented.341. The current reference strategy for the tritiated groundwater is therefore to discharge it tothe River Win/Frome. However as stated above, this will be subject to maintenance of strictcontrols to ensure discharges are kept below the levels specified in the Permit issued by theEnvironment Agency .7.2.1.5 LLW Organic Liquids342. Active waste oils and organic solvents arise in a number of facilities as a result of normaloperations and during maintenance. There are also accumulated hydraulic and lubricantwaste oils and organics solvents. The oils and organic solvents are currently storedawaiting disposal; some of these have already been consigned to an off-site incinerationservice.343. A disposal route was established in 2003 for the off-site incineration of organic liquid andcertain solid LLW. RSRL is utilising this route for disposal of contaminated oils and driedactive sewage sludge. In the past Winfrith has consigned Zinc Bromide LLW as well as alarge volume of historic active sewage drums for incineration. The use of the currentlyutilised incinerator is a key waste route for Winfrith’s organic LLW disposal strategy andWinfrith will therefore keep up-to-date with its availability.344. Several alternative management options for LLW organic liquids were considered duringthe site waste BPEO Study including high temperature combustion, chemical oxidation,disposal as a solid, storage and decay, evaporation and on-site incineration. It was agreedRSRL IWS (Issue 5 – October 2012)92
NOT PROTECTIVELY MARKEDthat high temperature combustion technology and chemical oxidation techniques added nobenefits over incineration for this waste stream. Disposal as a solid, storage and decay, andevaporation were also rejected for various regulatory and practicability reasons. For certainwastes the cost of incineration is high, and therefore RSRL is currently looking intoalternative treatment options for oils and solvents. Any change in strategy for this type ofwaste will be documented in future revisions of the IWS.345. The BPEO study did explore the feasibility of an on-site incineration facility however thepreferred option was identified to be off-site incineration. The use of this route is via theLLWR contract.346. Figure 12 summarises the strategy for Organic and Aqueous Liquids at Winfrith:RSRL IWS (Issue 5 – October 2012)93
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NOT PROTECTIVELY MARKEDRSRL Waste P
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NOT PROTECTIVELY MARKED8. There hav
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NOT PROTECTIVELY MARKEDmethods for
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NOT PROTECTIVELY MARKEDContents1 EX
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NOT PROTECTIVELY MARKED2.1 Backgrou
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NOT PROTECTIVELY MARKEDWinfrith sit
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NOT PROTECTIVELY MARKEDtransfer to
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NOT PROTECTIVELY MARKED3 WASTE MANA
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NOT PROTECTIVELY MARKEDFigure 1: Wa
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NOT PROTECTIVELY MARKED67. Effectiv
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NOT PROTECTIVELY MARKED3.1.6 Good P
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NOT PROTECTIVELY MARKEDInteractions
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NOT PROTECTIVELY MARKEDFigure 5: Th
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NOT PROTECTIVELY MARKED96. PRC 0199
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NOT PROTECTIVELY MARKED103. Technic
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NOT PROTECTIVELY MARKED113. The ter
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NOT PROTECTIVELY MARKEDThe procedur
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NOT PROTECTIVELY MARKED4.3.4 Techni
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NOT PROTECTIVELY MARKED4.4.1.1 Harw
Page 42 and 43: NOT PROTECTIVELY MARKEDNDA STRATEGI
Page 44 and 45: NOT PROTECTIVELY MARKEDAssumptionMa
Page 46 and 47: NOT PROTECTIVELY MARKEDThreatPossib
Page 48 and 49: NOT PROTECTIVELY MARKED4.5.3 Intera
Page 50 and 51: NOT PROTECTIVELY MARKED(WSSG). The
Page 52 and 53: NOT PROTECTIVELY MARKED5 OVERVIEW O
Page 54 and 55: NOT PROTECTIVELY MARKEDFuture stora
Page 56 and 57: NOT PROTECTIVELY MARKED5.2 Winfrith
Page 58 and 59: NOT PROTECTIVELY MARKEDWaste TypeSG
Page 60 and 61: NOT PROTECTIVELY MARKED• Final Lo
Page 62 and 63: NOT PROTECTIVELY MARKEDILWArising /
Page 64 and 65: NOT PROTECTIVELY MARKED• RSRL has
Page 66 and 67: NOT PROTECTIVELY MARKED6.1.2.4 CoRW
Page 68 and 69: NOT PROTECTIVELY MARKED6.1.3 Low Le
Page 70 and 71: NOT PROTECTIVELY MARKED241. For cer
Page 72 and 73: NOT PROTECTIVELY MARKED6.2 Radioact
Page 74 and 75: NOT PROTECTIVELY MARKEDSurface wate
Page 76 and 77: NOT PROTECTIVELY MARKEDto atmospher
Page 78 and 79: NOT PROTECTIVELY MARKED6.3.3 Inert
Page 80 and 81: NOT PROTECTIVELY MARKED6.3.4 Non-Ra
Page 82 and 83: NOT PROTECTIVELY MARKED7 WINFRITH I
Page 84 and 85: NOT PROTECTIVELY MARKED304. The bas
Page 86 and 87: NOT PROTECTIVELY MARKED7.1.3 Low Le
Page 88 and 89: NOT PROTECTIVELY MARKED321. A forwa
Page 90 and 91: NOT PROTECTIVELY MARKED7.1.4 Other
Page 94 and 95: NOT PROTECTIVELY MARKEDRadioactiveL
Page 96 and 97: NOT PROTECTIVELY MARKEDwaste are to
Page 98 and 99: NOT PROTECTIVELY MARKED7.3.4 Non-Ra
Page 100 and 101: NOT PROTECTIVELY MARKED8 AREAS REQU
Page 102 and 103: NOT PROTECTIVELY MARKEDOpportunityT
Page 104 and 105: NOT PROTECTIVELY MARKED9 CONCLUSION
Page 106 and 107: NOT PROTECTIVELY MARKEDANNEX LISTAn
Page 108 and 109: NOT PROTECTIVELY MARKEDANNEX 2: AUT
Page 110 and 111: NOT PROTECTIVELY MARKEDANNEX 3: REG
Page 112 and 113: NOT PROTECTIVELY MARKEDOSPAR Conven
Page 114 and 115: NOT PROTECTIVELY MARKEDSite Waste M
Page 116 and 117: NOT PROTECTIVELY MARKEDLegal interp
Page 118 and 119: NOT PROTECTIVELY MARKEDanalysis. If
Page 120 and 121: NOT PROTECTIVELY MARKEDHV-VLLW comp
Page 122 and 123: NOT PROTECTIVELY MARKEDenvironmenta
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RSRL Integrated Waste Strategy - Issue 5- Oct 2012.pdf

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