ES2156513B1 - PROCEDURE FOR IONIC DECONTAMINATION OF THE CONCRETE IN NUCLEAR FACILITIES. - Google Patents

PROCEDURE FOR IONIC DECONTAMINATION OF THE CONCRETE IN NUCLEAR FACILITIES.

Info

Publication number
ES2156513B1
ES2156513B1 ES9802541A ES9802541A ES2156513B1 ES 2156513 B1 ES2156513 B1 ES 2156513B1 ES 9802541 A ES9802541 A ES 9802541A ES 9802541 A ES9802541 A ES 9802541A ES 2156513 B1 ES2156513 B1 ES 2156513B1
Authority
ES
Spain
Prior art keywords
concrete
procedure
ions
ionic
radioactive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
ES9802541A
Other languages
Spanish (es)
Other versions
ES2156513A1 (en
Inventor
Perdrix M Carmen Andrade
Alonso M Cruz Alonso
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NAC DE RESIDUOS RADIOACTIVOS S
Original Assignee
NAC DE RESIDUOS RADIOACTIVOS S
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NAC DE RESIDUOS RADIOACTIVOS S filed Critical NAC DE RESIDUOS RADIOACTIVOS S
Priority to ES9802541A priority Critical patent/ES2156513B1/en
Publication of ES2156513A1 publication Critical patent/ES2156513A1/en
Application granted granted Critical
Publication of ES2156513B1 publication Critical patent/ES2156513B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

"Procedimiento para descontaminación iónica del hormigón en instalaciones nucleares". Procedimiento para descontaminación iónica del hormigón mediante la aplicación de un campo eléctrico a un medio acuoso en el que se encuentra el hormigón contaminado, los iones negativos se mueven hacia el polo positivo mientras que los iones positivos emigran hacia el polo negativo, de forma que al cabo de un cierto tiempo (del orden de semanas), la mayor parte de estos iones se encuentran en el anolito o en el catolito, de donde tales elementos pueden aislarse y enviarlos a un enterramiento adecuado y porque el cátodo está construido de un metal con alta sobretensión de hidrógeno tal como el acero inoxidable y el catolito contiene una sustancia reductora para evitar el desprendimiento del H{sub,2} y mediante un drenaje continuo de solución para someterla a un proceso químico, bien de tipo convencional de precipitación, bien de cambio iónico se aumenta el rendimiento de "recuperación" de los iones radioactivos lo que se facilita por la adición previa a la masa a tratar de una solución conteniendo el o los elementos u otros similares a recuperar en forma no radioactiva."Procedure for ionic decontamination of concrete in nuclear facilities". Procedure for ionic decontamination of concrete by applying an electric field to an aqueous medium in which the contaminated concrete is located, the negative ions move towards the positive pole while the positive ions migrate towards the negative pole, so that at After a certain time (on the order of weeks), most of these ions are found in the anolyte or in the catholyte, from which such elements can be isolated and sent to a suitable burial and because the cathode is constructed of a metal with high hydrogen overvoltage such as stainless steel and the catholyte contains a reducing substance to prevent the evolution of the H {sub, 2} and by means of a continuous drainage of solution to subject it to a chemical process, either of a conventional type of precipitation, or ionic change increases the "recovery" performance of radioactive ions which is facilitated by the previous addition to the mass to be treated of a solution containing the element (s) or others similar to be recovered in a non-radioactive way.

ES9802541A 1998-12-03 1998-12-03 PROCEDURE FOR IONIC DECONTAMINATION OF THE CONCRETE IN NUCLEAR FACILITIES. Expired - Fee Related ES2156513B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES9802541A ES2156513B1 (en) 1998-12-03 1998-12-03 PROCEDURE FOR IONIC DECONTAMINATION OF THE CONCRETE IN NUCLEAR FACILITIES.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES9802541A ES2156513B1 (en) 1998-12-03 1998-12-03 PROCEDURE FOR IONIC DECONTAMINATION OF THE CONCRETE IN NUCLEAR FACILITIES.

Publications (2)

Publication Number Publication Date
ES2156513A1 ES2156513A1 (en) 2001-06-16
ES2156513B1 true ES2156513B1 (en) 2001-12-01

Family

ID=8306010

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9802541A Expired - Fee Related ES2156513B1 (en) 1998-12-03 1998-12-03 PROCEDURE FOR IONIC DECONTAMINATION OF THE CONCRETE IN NUCLEAR FACILITIES.

Country Status (1)

Country Link
ES (1) ES2156513B1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0092941A3 (en) * 1982-04-22 1986-02-12 Taylor Woodrow Construction Limited Method for the treatment of radioactive and other concrete wastes
DE3343396A1 (en) * 1983-11-30 1985-06-05 Kraftwerk Union AG, 4330 Mülheim METHOD FOR DECONTAMINATING METALLIC COMPONENTS OF A NUCLEAR TECHNICAL PLANT
US5078842A (en) * 1990-08-28 1992-01-07 Electric Power Research Institute Process for removing radioactive burden from spent nuclear reactor decontamination solutions using electrochemical ion exchange
US5306399A (en) * 1992-10-23 1994-04-26 Electric Power Research Institute Electrochemical exchange anions in decontamination solutions

Also Published As

Publication number Publication date
ES2156513A1 (en) 2001-06-16

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