Processing of steam generator cleaning solvent at the Palo Verde Nuclear Station

Technical Report · Wed Nov 01 04:00:00 EST 1995

OSTI ID:229842

Peters, G ^[1]

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1. B&W Nuclear Technologies, Lynchburg, VA (United States)

Arizona Public Service Company (APS) and B&W Nuclear Technologies (BWNT) recently completed chemically cleaning the steam generators at Units 1, 2 and 3 of the Palo Verde Nuclear Generating Station. Over 2,000,000 liters of low-level radioactive solvents that were generated during these cleanings are currently being processed on-site. Chemical cleaning solutions containing high concentrations of organic chelating wastes are difficult to reduce in volume using standard technologies. The process being used at Palo Verde involves three distinct processing methods: (1) The evaporation step uses BWNT`s submerged combustion evaporator (SCE) that has been successfully used at Arkansas Nuclear One-Unit 1, Three Mile Island-Unit 1, and Oconee on similar waste. (2) The Synthetica Detoxifier reduces the concentrate from the SCE to its elemental form (i.e., metals and metal oxides only) for the best possible volume reduction. (3) The polishing step of the distillate uses filtration and reverse osmosis (RO) technology from Zeonon Environmental, Inc. This technology has also been used extensively by Ontario Hydro to assist in their processing of chemical cleaning solvent.

• Research Organization: Electric Power Research Inst., Palo Alto, CA (United States); Williams (Paul) and Associates, Medina, OH (United States)
• OSTI ID: 229842
• Report Number(s): EPRI-TR--105569; CONF-950718--
• Country of Publication: United States
• Language: English

Related Subjects

05 NUCLEAR FUELS
ARIZONA
FILTRATION
LOW-LEVEL RADIOACTIVE WASTES
NUCLEAR FACILITIES
OSMOSIS
RADIOACTIVE WASTE MANAGEMENT
RADIOACTIVE WASTE PROCESSING
TECHNOLOGY ASSESSMENT