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Title: Nuclear reactor cooling system decontamination reagent regeneration. [PWR; BWR]

Abstract

An improved method for decontaminating the coolant system of water-cooled nuclear power reactors and for regenerating the decontamination solution is described. A small amount of one or more weak-acid organic complexing agents is added to the reactor coolant, and the pH is adjusted to form a decontamination solution which is circulated throughout the coolant system to dissolve metal oxides from the interior surfaces and complex the resulting metal ions and radionuclide ions. The coolant containing the complexed metal ions and radionuclide ions is passed through a strong-base anion exchange resin bed which has been presaturated with a solution containing the complexing agents in the same ratio and having the same pH as the decontamination solution. As the decontamination solution passes through the resin bed, metal-complexed anions are exchanged for the metal-ion-free anions on the bed, while metal-ion-free anions in the solution pass through the bed, thus removing the metal ions and regenerating the decontamination solution.

Inventors:
; ; ;
Issue Date:
OSTI Identifier:
6617936
Assignee:
Dept. of Energy TIC; ERA-06-015644; EDB-81-045014
DOE Contract Number:  
EY-76-C-02-2985
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; BWR TYPE REACTORS; COOLANT CLEANUP SYSTEMS; PWR TYPE REACTORS; DECONTAMINATION; ION EXCHANGE; ION EXCHANGE MATERIALS; ORGANIC ACIDS; PRIMARY COOLANT CIRCUITS; RESINS; CLEANING; COOLING SYSTEMS; ENERGY SYSTEMS; MATERIALS; ORGANIC COMPOUNDS; ORGANIC POLYMERS; PETROCHEMICALS; PETROLEUM PRODUCTS; POLYMERS; REACTOR COMPONENTS; REACTOR COOLING SYSTEMS; REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS 210100* -- Power Reactors, Nonbreeding, Light-Water Moderated, Boiling Water Cooled; 210200 -- Power Reactors, Nonbreeding, Light-Water Moderated, Nonboiling Water Cooled

Citation Formats

Anstine, L.D., James, D.B., Melaika, E.A., and Peterson, J.P. Jr. Nuclear reactor cooling system decontamination reagent regeneration. [PWR; BWR]. United States: N. p., 1980. Web.
Anstine, L.D., James, D.B., Melaika, E.A., & Peterson, J.P. Jr. Nuclear reactor cooling system decontamination reagent regeneration. [PWR; BWR]. United States.
Anstine, L.D., James, D.B., Melaika, E.A., and Peterson, J.P. Jr. Fri . "Nuclear reactor cooling system decontamination reagent regeneration. [PWR; BWR]". United States.
@article{osti_6617936,
title = {Nuclear reactor cooling system decontamination reagent regeneration. [PWR; BWR]},
author = {Anstine, L.D. and James, D.B. and Melaika, E.A. and Peterson, J.P. Jr.},
abstractNote = {An improved method for decontaminating the coolant system of water-cooled nuclear power reactors and for regenerating the decontamination solution is described. A small amount of one or more weak-acid organic complexing agents is added to the reactor coolant, and the pH is adjusted to form a decontamination solution which is circulated throughout the coolant system to dissolve metal oxides from the interior surfaces and complex the resulting metal ions and radionuclide ions. The coolant containing the complexed metal ions and radionuclide ions is passed through a strong-base anion exchange resin bed which has been presaturated with a solution containing the complexing agents in the same ratio and having the same pH as the decontamination solution. As the decontamination solution passes through the resin bed, metal-complexed anions are exchanged for the metal-ion-free anions on the bed, while metal-ion-free anions in the solution pass through the bed, thus removing the metal ions and regenerating the decontamination solution.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {6}
}