IMPROVEMENTS RELATING TO BURST SLUG DETECTION DEVICES IN NUCLEAR REACTORS
A device was previously developed in which some radioactive daughters of the gaseous fission products formed inside the nuclear fuel slugs are detected in the gaseous coolant in the case of a burst slug. Samples of gaseous coolant are taken from the different reactor channels by a system of sampling lines leading them to the detection device comprising a chamber in which, during a certain period, the radioactive daughters are electrostatically precipitated onto a zone of the cylindrical surface of a drum shaped electrode; after this period the electrode rotates about a given angle for brin ing the zone in front of a scintillation counter. Improvements were made by mounting the drum in a cavity bounded by two metallic blocks between them is disposed a toroidal sealing ring for ensuring gas tightness. The rotation of the drum is controlled by an electric motor via a gear and a magnetic coupling transmitting a rotation movement via the wall of the cavity to the axle of the drum. (IIB)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-18-001204
- OSTI ID:
- 4160240
- Report Number(s):
- FIRST ADD. NO. 75,732 TO FRENCH 1201566
- Country of Publication:
- France
- Language:
- English
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IMPROVEMENTS RELATING TO BURST SLUG DETECTION DEVICES IN NUCLEAR REACTORS
BURST SLUG DETECTION DEVICE ADAPTED FOR AN INDEPENDENT LOOP DISPOSED INSIDE A NUCLEAR REACTOR