Condensate Demineralizer Resin Regeneration System Sample Clauses

Condensate Demineralizer Resin Regeneration System. The Condensate Demineralizer Resin Regeneration System for each Unit recycles spent resin from the full flow condensate demineralizers, and is located in the Unit’s turbine building. This system recycles spent resin by chemical regeneration using acid and caustic treatment. Spent resin is transferred from the condensate demineralizers to the regeneration vessels where it is chemically regenerated and then transferred to the resin mix and hold vessel prior to transfer back to the demineralizer. The resin regeneration system includes the following components and equipment: (a) One resin separation cation regeneration vessel that is a rubber-lined, vertical-cylindrical tank, with internal baffles and distributors. (b) One anion regeneration vessel that is a rubber-lined vertical-cylindrical tank, with internal baffles and distributors. (c) One resin mix and hold vessel that is a rubber-lined, vertical-cylindrical tank, with internal baffle and distributor plate. (d) One acid day-tank that is a vertical-cylindrical tank of 400-gallon capacity, with a hinged cover, desiccant air breather and gauge glass. (e) Two motor-driven, diaphragm type, acid pumps with adjustable stroke. (f) One caustic day-tank that is a plastic-lined vertical-cylindrical tank of 2500 gallon capacity, with a gauge glass and electric heaters. (g) Two motor-driven centrifugal type caustic pumps. (h) Waste collection tank. (i) The portions of the central acid and caustic chemical supply systems that are dedicated solely to the Condensate Demineralizer Resin Regeneration System. (j) Associated piping, valves, instrumentation and mechanical equipment.
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Condensate Demineralizer Resin Regeneration System. The condensate demineralizer resin regeneration system collects, processes and recycles spent radioactive resin from the condensate demineralizers. The condensate demineralizers use resin to filter and demineralize condensate. As the resin accumulates impurities, it becomes ineffective and is removed from the demineralizer vessels. The ineffective resin filled with impurities is called spent resin because it is unusable as a filter-demineralizer. Spent resin from the condensate demineralizers is radioactive and consequently it must be treated as solid radwaste if it is to be disposed. Spent condensate demineralizer resin is useless and has no value. The Company does not expect to sell, or to be able to sell, spent radioactive resin at any price. To minimize the amount of solid radwaste produced by the plant, a condensate demineralizer resin regeneration system has been installed. This will permit recycling of the spent resin by a chemical regeneration process. The regeneration process involves flushing the spent resin with acid and caustic chemicals in a rinse water solution. This flushes trapped particles from the spent resin and restores its ion exchange properties. To regenerate spent resin, it is first transferred from the condensate demineralizer vessels (not part of the exempt facilities) to the resin separation and anion regeneration tank. Cation resin is separated and transferred to the cation regeneration tank. Dilute solutions of acid and caustic are prepared and pumped into the regeneration vessels. Strong acid and caustic are supplied by the acid and caustic tanks. Regenerated anion and cation resins are transferred to the resin mix and storage tank for final preparation and treatment prior to being transferred back to the condensate demineralizer. The turbine subbasement is an area located under the turbine that is used exclusively in connection with the resin regeneration process and is not used to store regenerated resins. Radioactive chemical wastes are produced by the condensate demineralizer resin regeneration process. These liquid wastes are collected and transferred to the liquid radwaste system for processing and treatment. Equipment and components in the scope of this exempt facility include: caustic tank caustic dilution water heater resin separation and anion regeneration vessel cation regeneration vessel control panel with controls allocated portion of enclosure building, including turbine subbasement related pumps, piping, valves,...
Sample 1

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