Method of inhibiting radioactive substances from eluting into co

Induced nuclear reactions: processes – systems – and elements – Reactor protection or damage prevention – Corrosion or damage prevention

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G21C 101

Patent

active

048942022

ABSTRACT:
Disclosed is a method and apparatus for inhibiting radioactive substances eluting into cooling water of a nuclear plant. The method uses an index consisting of an amount of iron adhered onto the fuel cladding surface, that is calculated from the iron concentration of the cooling water and the operation time. A formation of a layer of the iron oxide on the fuel cladding surface is confirmed based upon the covering ratio of 100%. When the covering ratio is smaller than 100%, the iron concentration in the cooling water is controlled to remain constant at a maximum concentration. The Fe/Ni molar concentration ratio in the cooling water is adjusted to be set from about 2 to 10 after the layer of iron oxide reaches a covering ratio of 100%. .sup.58 Co ion and .sup.60 Co ion concentrations in the cooling water can be decreased without greatly increasing the concentration of precipitating radioactive crud, and the surface dosage in the primary system can be decreased at the time of regular checking.

REFERENCES:
patent: 3142625 (1964-07-01), Wellborn
patent: 4476047 (1984-10-01), Bonnici et al.
patent: 4526626 (1985-07-01), Carter
patent: 4722823 (1988-02-01), Honda et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method of inhibiting radioactive substances from eluting into co 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 of inhibiting radioactive substances from eluting into co, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of inhibiting radioactive substances from eluting into co will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1333671

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.