Estimation of the amount of surface contamination of a water cooled nuclear reactor by cooling water analysis

G. Nagy, A. Somogyi, G. Patek, T. Pintér, R. Schiller

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Calculations, based upon on-the-spot measurements, were performed to estimate the contamination of NPP primary circuit and spent fuel storage pool solid surfaces via the composition of the cooling water in connection with a non-nuclear incident in the Paks NPP. Thirty partially burnt-up fuel element bundles were damaged during a cleaning process, an incident which resulted in the presence of fission products in the cooling water of the cleaning tank (CT) situated in a separate pool (P1). Since this medium was in contact for an extended period of time with undamaged fuel elements to be used later and also with other structural materials of the spent fuel storage pool (SP), it was imperative to assess the surface contamination of these latter ones with a particular view to the amount of fission material. In want of direct methods, one was restricted to indirect information which rested mainly on the chemical and radiochemical data of the cooling water. It was found that (i) the most important contaminants were uranium, plutonium, cesium and cerium; (ii) after the isolation of P1 and SP and an extended period of filtering the only important contaminants were uranium and plutonium; (iii) the surface contamination of the primary circuit (PC) was much lower than that of either SP or P1; (iv) some 99% of the contamination was removed from the water by the end of the filtering process.

Original languageEnglish
Pages (from-to)496-500
Number of pages5
JournalAnnals of Nuclear Energy
Volume34
Issue number6
DOIs
Publication statusPublished - Jun 2007

Fingerprint

Water analysis
Water cooled reactors
cooling water
Cooling water
Contamination
Fuel storage
Spent fuels
plutonium
Plutonium
Uranium
Cleaning
uranium
Impurities
water
cerium
pollutant
Networks (circuits)
Fission products
cesium
Cesium

ASJC Scopus subject areas

  • Nuclear Energy and Engineering
  • Waste Management and Disposal

Cite this

Estimation of the amount of surface contamination of a water cooled nuclear reactor by cooling water analysis. / Nagy, G.; Somogyi, A.; Patek, G.; Pintér, T.; Schiller, R.

In: Annals of Nuclear Energy, Vol. 34, No. 6, 06.2007, p. 496-500.

Research output: Contribution to journalArticle

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