You need JavaScript to view this

Experiments on determination and limitation of fission and activation product release during core meltdown

Technical Report:

Abstract

In melting experiments with Corium samples of 500 g under air, temperatures of about 2,300/sup 0/C could be reached whereas 500 g samples of Ni could be heated in argon up to only 1,400/sup 0/C. Obviously, the exothermic oxidation reaction of the zircaloy and steel is the reason for that considerable rise of the Corium temperature in air. Using smaller Ni samples (30 g) the maximum HF-power being coupled to the melt material has been determined by measuring the time of constant temperature at the melting point with the generator at full power. The thermal power effectively transmitted to the specimen was only 1.2 KW. Thus, for melting kg-amounts of Corium, a higher generator power is needed as well as a more effective HF-coupling. The rented generator now in use will be replaced, therefore, by a device with a nominal power of 120 KW, and the power transmission to the induction coil will be improved. The first series of release experiments with 30-60 g of Corium will not be affected by these changes. Melting experiments with various steel components (Fe, Cr, Ni) in an argon atmosphere and with Corium under air did not show any selective influence of the vapors  More>>
Authors:
Albrecht, H; Krause, W; Wild, H; [1]  Perinic, D; Kammerer, B; Knauss, H; Mack, A; Stuka, B; [2]  Osborne, M F
  1. Kernforschungszentrum Karlsruhe (Germany, F.R.). Inst. fuer Radiochemie
  2. Kernforschungszentrum Karlsruhe (Germany, F.R.). Abt. Reaktorbetrieb und Technik
Publication Date:
Jun 01, 1976
Product Type:
Technical Report
Report Number:
KFK-2262
Reference Number:
AIX-08-293449; ERA-02-035183; EDB-77-073857
Resource Relation:
Other Information: 4 figs.; 1 tab.; 5 refs; Related Information: In: Semiannual report, 1975/2.
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; MELTDOWN; FISSION PRODUCT RELEASE; REACTOR CORES; FURNACES; NICKEL; SIMULATION; STEELS; TEMPERATURE MEASUREMENT; VERY HIGH TEMPERATURE; ZIRCALOY; ACCIDENTS; ALLOYS; ELEMENTS; IRON ALLOYS; IRON BASE ALLOYS; METALS; REACTOR ACCIDENTS; REACTOR COMPONENTS; TIN ALLOYS; TRANSITION ELEMENTS; ZIRCONIUM ALLOYS; ZIRCONIUM BASE ALLOYS; 220900* - Nuclear Reactor Technology- Reactor Safety
OSTI ID:
8572946
Research Organizations:
Kernforschungszentrum Karlsruhe (Germany, F.R.). Projekt Nukleare Sicherheit
Country of Origin:
Germany
Language:
German
Availability:
INIS
Submitting Site:
INIS
Size:
Pages: 347-365
Announcement Date:
Mar 15, 2013

Technical Report:

Citation Formats

Albrecht, H, Krause, W, Wild, H, Perinic, D, Kammerer, B, Knauss, H, Mack, A, Stuka, B, and Osborne, M F. Experiments on determination and limitation of fission and activation product release during core meltdown. Germany: N. p., 1976. Web.
Albrecht, H, Krause, W, Wild, H, Perinic, D, Kammerer, B, Knauss, H, Mack, A, Stuka, B, & Osborne, M F. Experiments on determination and limitation of fission and activation product release during core meltdown. Germany.
Albrecht, H, Krause, W, Wild, H, Perinic, D, Kammerer, B, Knauss, H, Mack, A, Stuka, B, and Osborne, M F. 1976. "Experiments on determination and limitation of fission and activation product release during core meltdown." Germany.
@misc{etde_8572946,
title = {Experiments on determination and limitation of fission and activation product release during core meltdown}
author = {Albrecht, H, Krause, W, Wild, H, Perinic, D, Kammerer, B, Knauss, H, Mack, A, Stuka, B, and Osborne, M F}
abstractNote = {In melting experiments with Corium samples of 500 g under air, temperatures of about 2,300/sup 0/C could be reached whereas 500 g samples of Ni could be heated in argon up to only 1,400/sup 0/C. Obviously, the exothermic oxidation reaction of the zircaloy and steel is the reason for that considerable rise of the Corium temperature in air. Using smaller Ni samples (30 g) the maximum HF-power being coupled to the melt material has been determined by measuring the time of constant temperature at the melting point with the generator at full power. The thermal power effectively transmitted to the specimen was only 1.2 KW. Thus, for melting kg-amounts of Corium, a higher generator power is needed as well as a more effective HF-coupling. The rented generator now in use will be replaced, therefore, by a device with a nominal power of 120 KW, and the power transmission to the induction coil will be improved. The first series of release experiments with 30-60 g of Corium will not be affected by these changes. Melting experiments with various steel components (Fe, Cr, Ni) in an argon atmosphere and with Corium under air did not show any selective influence of the vapors on the intensities of the wavelengths used for the temperature measurement. The behavior of a spherical glass vessel above the crucible was quite satisfactory. After melting tests with temperatures of more than 2,700/sup 0/C it was not broken nor did it show any appearance of softening.}
place = {Germany}
year = {1976}
month = {Jun}
}