skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: METHOD OF CHEMICAL DECONTAMINATION OF STAINLESS STEEL NUCLEAR FACILITIES

Abstract

A chemical method is given for removing activated corrosion products on the primary system surfaces of a pressurized water reactor. The corrosion product deposits are composed chiefly of magnetite (Fe/sub 3/O/sub 4/) with small amounts of nickel and chromium oxides. The corroded surfaces are first flushed with a caustic permanganate primary solution consisting of sodium hydroxide and potassium permanganate followed by a secondary rinse solution of ammonium citrate and citric acid containing the complexing agent Versene in small amounts. Demineralized water is used to clean out the primary and secondary solutions and a 60-minute drying period precedes the rinse solution. (AEC)

Inventors:
;
Issue Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4832216
Patent Number(s):
3013909
Assignee:
U.S. Atomic Energy Commission DTIE; NSA-16-002957
NSA Number:
NSA-16-002957
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-62
Country of Publication:
United States
Language:
English
Subject:
CHEMISTRY; AMMONIUM COMPOUNDS; CHEMICAL REACTIONS; CHROMIUM OXIDES; CITRIC ACID; CLEANING; COMPLEXES; CORROSION; DECONTAMINATION; EDTA; FISSION PRODUCTS; IRON OXIDES; MANGANESE OXIDES; NICKEL OXIDES; PERMANGANATES; PRESSURE VESSELS; RESIDUES; SODIUM HYDROXIDES; SURFACES; WATER

Citation Formats

Pancer, G.P., and Zegger, J.L. METHOD OF CHEMICAL DECONTAMINATION OF STAINLESS STEEL NUCLEAR FACILITIES. United States: N. p., 1961. Web.
Pancer, G.P., & Zegger, J.L. METHOD OF CHEMICAL DECONTAMINATION OF STAINLESS STEEL NUCLEAR FACILITIES. United States.
Pancer, G.P., and Zegger, J.L. Tue . "METHOD OF CHEMICAL DECONTAMINATION OF STAINLESS STEEL NUCLEAR FACILITIES". United States.
@article{osti_4832216,
title = {METHOD OF CHEMICAL DECONTAMINATION OF STAINLESS STEEL NUCLEAR FACILITIES},
author = {Pancer, G.P. and Zegger, J.L.},
abstractNote = {A chemical method is given for removing activated corrosion products on the primary system surfaces of a pressurized water reactor. The corrosion product deposits are composed chiefly of magnetite (Fe/sub 3/O/sub 4/) with small amounts of nickel and chromium oxides. The corroded surfaces are first flushed with a caustic permanganate primary solution consisting of sodium hydroxide and potassium permanganate followed by a secondary rinse solution of ammonium citrate and citric acid containing the complexing agent Versene in small amounts. Demineralized water is used to clean out the primary and secondary solutions and a 60-minute drying period precedes the rinse solution. (AEC)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1961},
month = {12}
}