Solid Radioactive Waste Strategy Report.pdf - UK EPR

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EPR UK N° NESH-G/2008/en/0123 REV. A PAGE 178 / 257 Spent resins will be placed into specially designed transportation containers in the nuclear auxiliary building. The containers will then be transported to the WTB for treatment and conditioning. Upon arrival in the WTB the spent resin container will be connected to the spent resin tank and its content is flushed into the tank awaiting conditioning. Higher dose solid waste parts will be placed into shielded transport containers at the place of origin. A transportation vehicle will be used to transfer these containers to the appropriate treatment section (e.g. the decontamination booth). 11.2.4 Active Laundry If the Active Laundry Facility is located in the WTB a buffer store will be provided for all items of laundry for example personal protection equipment, over shoes etc. Any items containing higher than expected levels of activity will be segregated and placed into a designated area for decay storage. Items will be retrieved from the store and checked for damage prior to industrial washing and drying. Once washed the items will be monitored and placed into the buffer storage area pending shipping for re-use. All effluents will be sent to the liquid storage tanks prior to treatment and processing. 11.2.5 Handling And Shipping Of Final Packages Following treatment the waste will be placed in an appropriate container for transport or disposal. Following sealing the containers will be monitored for the presence of external contamination prior to transfer out of the WTB. Waste containers awaiting transfer off-site will be placed in buffer stores and transferred into transportation containers (e.g. IP2 containers) prior to loading onto the transportation vehicle. Wastes that will require conditioning on site will also be placed in a buffer store prior to sentencing for conditioning at an appropriate time. Conditioned packages that will be sent to the interim buffer store, ISF or off-site will be weighted and monitored to determine the dose rates and contamination levels at the time of shipping. All data collected will go into the waste tracking system in conjunction with other package specific data (e.g. content, treatment, conditioning, nuclides). Waste containers leaving the building will be transferred to a number of locations including: · Off-site treatment facilities; · VLLW and LLW disposal facilities; · ISF. Prior to shipping the data that has been collected for the waste package will be verified for completeness and the appropriate transportation, storage and/or disposal documentation prepared. Waste packages will not be transported until this paperwork has been verified to meet the required standards. Following thorough verification some materials will be exported as ‘exempt from regulatory control’ from the WTB. These materials will be shipped to another location, for example for recycling.
EPR UK N° NESH-G/2008/en/0123 REV. A PAGE 179 / 257 11.2.6 Liquid Waste Treatment System Liquid waste will be transferred via pipework into the WTB. During operation of the nuclear power plant, liquid effluent (water) and liquid waste of different origins is produced by the drains system, leakage, flushing etc. The function of the liquid waste treatment system and the nuclear island liquid radwaste monitoring and discharge system is to collect, process and decontaminate all radioactive liquid waste and liquid discharge from the controlled area of the power plant prior to discharge from the EPR. The system will collect, store, process and clean the liquid radioactive waste produced by letdown, drainage, purge, venting, or leakage from systems in the controlled area. All liquid effluent generated in the controlled area will be collected and treated in the liquid waste processing system prior to discharge. The functions of the system include: · Liquid effluent collection and storage; · Liquid effluent treatment; · Liquid effluent release including control of liquid effluent release to the environment; · Liquid waste concentrate collection and transfer to the solid waste treatment system. The main objective of the system is to provide a solid waste form suitable for conditioning and a liquid component suitable for discharge to the environment which is within the limits specified on the discharge authorisation granted under the RSA1993 [Ref. 10]. 11.2.6.1 Liquid Effluent Collection The system will provide the following functions: · Selective collection and segregation of liquid effluents produced by the reactor coolant treatment system, nuclear auxiliary systems, reactor cavity and spent fuel pool, as well as all potentially-contaminated liquids produced in the controlled area (such as floor drains, laundry and decontamination waste); · Routing of the collected waste to the storage and treatment facilities. – The total storage capacity of the liquid effluent collection system will correspond to the maximum quantity of effluents produced as a daily maximum during outages. Mobile decontamination equipment will be available for the removal of any sludge that has accumulated in the sumps of the radioactive liquid waste systems. Each subsystem will have sufficient process flow and storage capacity to process the daily inputs produced during normal operation and during anticipated operational occurrences, including refueling, plant shutdowns, maintenance and startup operations, as well as initial startup.
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Solid Radioactive Waste Strategy Report.pdf - UK EPR

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