Recent Progress in the Detection of Bursts in the Canning in French Reactors, G1, EL2, G3, EL3; PROGRES RECENTS DE LA DETECTION DES RUPTURES DE GAINES DANS LES REACTEURS FRANCAIS, G1, EL2, G3, EL3

Technical Report · Sat Oct 31 04:00:00 EST 1959

OSTI ID:4256876

Goupil, J; Grenon, M; Raffailhac, J; Roguin, A

In heterogeneous reactors the fuel is protected from contact with the coolant by a coating. Any fissure or break in this canning must be detected so that excess reactivity can be avoided. The methods and apparatus used in the gas- cooled reactors G-1, G-3, and EL-2 and in the water-cooled reactor EL-3 are described. The methed is based on the detection of fission gases. An instrument named the evolution meter is designed to make the measurement of the activity of the coolant gas in the channels by a zero method, and it is independent of the activity of the coolant itself and of the uranium contamination of the canning. In the EL-3 the detection system is based on measurements by G-M counters of the activity of the fission gases carried by diluted helium into the heavy water and then extracted by hydrocyclones. (J.S.R.)

• Research Organization: Commissariat a l'Energie Atomique, Paris
• NSA Number: NSA-13-007111
• OSTI ID: 4256876
• Report Number(s): A/CONF.15/P/334
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACTIVATION
BACKGROUND
CANNING
COATING
CONTAMINATION
COOLANT LOOPS
COOLANTS
CRACKS
EFFICIENCY
EL-2
EL-3
FAILURES
FISSION PRODUCTS
FUEL ELEMENTS
G1
G3
GAMMA DETECTION
GAS COOLANT
GASES
GEIGER-MUELLER COUNTERS
HEAVY WATER
HELIUM
IMPURITIES
INSTRUMENTS
LEAK DETECTORS
MEASURED VALUES
MONITORING
PLANNING
RADIATION PROTECTION
RADIOACTIVITY
REACTIVITY
REACTOR SAFETY
REACTORS
SURFACES
URANIUM
WATER COOLANT