Published June 1970 | Version v1
Report Restricted

Fission Product Release Measurements in the Dragon Reactor Charge II

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Description

During the irradiation of the second fuel charge in the Dragon Reactor, purge gas from 41 elements was analysed and the specific activity of a number of radioactive isotopes determined by γ-spectrometry. The results of these analyses, together with purge flow data on individual elements and power ratings, has enabled the fraction of generated fission products which escape into the purge gas to be calculated. In most cases very low release to birth ratios have been determined, with the exception of one experimental element designed to operate at temperatures likely to bring about particle failure. In this particular case a progressive change in release to birth ratio from 7 x 10-6 to 10-2 was observed. The level of activity of Xe-133, Kr-85m and Xe-135, in the primary coolant was determined regularly throughout the life of this charge at various levels of purge and by-pass purification rates. Measurement of the total activity in the primary coolant was also made on a regular basis by means of an installed ion chamber. (author)

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Additional details

Publishing Information

Imprint Pagination
131 p.
Report number
DP-R--715

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
54049139
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Descriptors DEI
DESIGN; FEDERAL REPUBLIC OF GERMANY; FISSION PRODUCT RELEASE; FISSION PRODUCTS; FORSCHUNGSZENTRUM JUELICH; GAMMA SPECTROSCOPY; HTGR TYPE REACTORS; INDIUM 135; IONIZATION CHAMBERS; IRRADIATION; KRYPTON 85; NUCLEAR FUELS; PRIMARY COOLANT CIRCUITS; XENON 133; XENON 135
Descriptors DEC
BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; COOLING SYSTEMS; DAYS LIVING RADIOISOTOPES; DEVELOPED COUNTRIES; ENERGY SOURCES; ENERGY SYSTEMS; EUROPE; EVEN-ODD NUCLEI; FUELS; GAS COOLED REACTORS; GERMAN FR ORGANIZATIONS; GRAPHITE MODERATED REACTORS; HOURS LIVING RADIOISOTOPES; INDIUM ISOTOPES; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; KRYPTON ISOTOPES; MATERIALS; MEASURING INSTRUMENTS; MICROSECONDS LIVING RADIOISOTOPES; MILLISECONDS LIVING RADIOISOTOPES; MINUTES LIVING RADIOISOTOPES; NATIONAL ORGANIZATIONS; NUCLEI; ODD-EVEN NUCLEI; RADIATION DETECTORS; RADIOACTIVE MATERIALS; RADIOISOTOPES; REACTOR COMPONENTS; REACTOR COOLING SYSTEMS; REACTOR MATERIALS; REACTORS; SPECTROSCOPY; WESTERN EUROPE; XENON ISOTOPES; YEARS LIVING RADIOISOTOPES

Optional Information

Notes
Document from Juelich Preservation Project; 60 figs., 50 tabs.