Published July 20, 1990 | Version v1
Patent Metadata-only

Decontamination process of metal surface especially parts of the primary coolant circuit of light water reactors

Creators

Description

Contaminated surfaces are oxidized with a solution of potassium permanganate and nitric acid, rinsed with demineralized water, then reduced in an alkaline solution of potassium gluconate or sodium gluconate

Availability note (English)

Available from Institut National de la Propriete Industrielle, Paris (France).

Abstract (French)

On soumet les surfaces a decontaminer a un pretraitement oxydant a l'aide d'une solution de permanganate de potassium et d'acide nitrique, a un rincage a l'eau demineralisee, puis a un traitement reducteur en milieu basique a l'aide d'une solution d'un gluconate de sodium ou de potassium

Additional details

Additional titles

Original title (French)
Procede de decontamination radioactive de surface metallique, notamment de portions de circuits primaires de reacteurs nucleaires refroidis a l'eau

Publishing Information

Imprint Pagination
9 p.
IPC:
Int. Cl. G21f9/30.
IPC
Int. Cl. G21f9/30.
Patent number
FR patent document 2641895/A/

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
22022861
Subject category
S61: RADIATION PROTECTION AND DOSIMETRY;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
DECONTAMINATION; OXIDATION; PRIMARY COOLANT CIRCUITS; REDUCTION; SOLUTIONS; SURFACE CLEANING
Descriptors DEC
CHEMICAL REACTIONS; CLEANING; COOLING SYSTEMS; DISPERSIONS; HOMOGENEOUS MIXTURES; MIXTURES; REACTOR COMPONENTS; REACTOR COOLING SYSTEMS; SURFACE FINISHING

Optional Information

Secondary number(s)
FR patent application 8900604.