Method for preventing Co-60 contamination of cooling water circu

Details Method for preventing Co-60 contamination of cooling water circu Method for preventing Co-60 contamination of cooling water circu

1993-07-06

1994-12-20

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Fission reactor material treatment

Impurity removal

376305, 376306, G21C 1900

Patent

active

053751523

ABSTRACT:
A method for preventing or reducing the formation of Co-60 contaminated material on the surfaces of a cooling water circuit of a nuclear reactor. The method is carried out during shutdown of the reactor. First, Co-60 contaminated material formed on the surfaces of the cooling water circuit is chemically removed. Then at least one iron compound is added to the cooling water in an amount sufficient to scavenge cobalt from the cooling water. Thereafter, oxygen is injected into the cooling water to provide a dissolved oxygen concentration sufficient to form an oxide film on the surfaces of the cooling water circuit. The oxide film so formed is substantially free of Co-60 isotope. This treatment reduces the radiation hazard to nuclear reactor personnel.

REFERENCES:
patent: 4476047 (1984-10-01), Bonnici et al.
patent: 4764338 (1988-08-01), Uchida et al.
patent: 4894202 (1990-01-01), Nagase et al.
patent: 5015436 (1991-05-01), Nagase et al.
patent: 5024805 (1991-06-01), Murray
patent: 5245642 (1993-09-01), Lin

Affiliated with

Also associated with

Rating

Method for preventing Co-60 contamination of cooling water circu does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for preventing Co-60 contamination of cooling water circu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for preventing Co-60 contamination of cooling water circu will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2389802