Inhibition of radioactive cobalt deposition in water-cooled nuclear reactors

Patent · Tue Aug 21 00:00:00 EDT 1990

OSTI ID:6772489

Peterson, G E; Robinson, R N; Ruiz, C P; Marble, W J; Gordon, B M; Gordon, G M

This patent describes a method for inhibiting intergranular stress corrosion cracking and the deposition of radioactive cobalt in a water-bearing vessel of a water-cooled nuclear reactor. It comprises: adding zinc to water entering the water-bearing vessel continuously during operation of the water-cooled nuclear reactor, wherein the amount of zinc oxide is selected to achieve a concentration in the range from about 25 to 150 ppb.

• Assignee: General Electric Co., San Jose, CA (USA)
• Patent Number(s): US 4950449; A
• Application Number: PPN: US s 7-160725; TRN: 90-033969
• OSTI ID: 6772489
• Resource Relation: Patent File Date: 26 Feb 1988
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
36 MATERIALS SCIENCE
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
COBALT
CORROSIVE EFFECTS
REACTOR COOLING SYSTEMS
FOULING
WATER COOLED REACTORS
CORROSION INHIBITORS
CRACKING
PRESSURE VESSELS
STRESS CORROSION
ZINC OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CONTAINERS
COOLING SYSTEMS
CORROSION
DECOMPOSITION
ELEMENTS
ENERGY SYSTEMS
METALS
OXIDES
OXYGEN COMPOUNDS
PYROLYSIS
REACTOR COMPONENTS
REACTORS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
ZINC COMPOUNDS
220400* - Nuclear Reactor Technology- Control Systems
360105 - Metals & Alloys- Corrosion & Erosion
210200 - Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
210100 - Power Reactors
Nonbreeding
Light-Water Moderated
Boiling Water Cooled