Compagnie Generale Des Matieres Nucleaires

Daniel M Kerlau

Daniel Tucoulat

Patrice B Roux

Patrick H Jacq

Jean-Luc Guyot

Philippe Kerrien

Jean Colas

Claude A Gineste

Bruno Julienne

Richard Griveau

Marc Schiavi

Robert Pellier

Thierry Prevost

A tool () for sampling or extracting the contents of a pit () is suspended from a cable () passing through a narrow opening () in a slab () covering the pit. A crosspiece () hooked to guide cables () which converge on it makes it possible to displace the lifting cable () under the slab () according to different movements imposed by winches (). Thus it is possible to move the tool () to the desired point with great precision and without having to descend into the pit ().

Device for inspecting, sampling or extracting at a precise spot beneath a slab

The invention relates to a process for blind placement of a cable under a slab (,) such as a slab closing off a storage silo for the storage of noxious products, between two openings (,). A target (,) is lowered through one (,) of the openings and a gun (,) is lowered through the other opening (,). The target (,) and the gun (,) are rotated to face each other and a projectile such as a harpoon (,) is then fired with a gun towards the target, after attaching a hemp rope (,) to the harpoon. After lifting the target (,) above the slab (,) and disconnecting the harpoon (,), the cable is attached to the other end of the hemp rope and the hemp rope is pulled through the opening (,) until the cable is put into place.

Method for laying a cable beneath a slab

A device for taking samples of noxious liquids, notably radioactive liquids. A protective enclosure (7) contains notably a circulation unit (10) in the form of a jet pump supplied by a driving arm (19). The liquid to be analysed is aspirated by an aspiration arm (17) and discharged with a drive liquid via a return arm (18). A sampling flask is pressed under a support plate (9) where the aspiration and return arms (17 and 18) emerge and closes the sampling circuit. This method is recommended above all for viscous liquids, liquid sludges and liquids charged with large size solid particles, since the sample only passes through pipes of an adequate diameter and is not subjected to any mixing or disturbance. A correct sampling is therefore ensured.

Device for taking samples of noxious liquids, particularly liquids

Material sampling method and device

Compacting method and apparatus, particularly adapted to compacting

This invention relates to a pusher placed in a magazine for irradiated fuel elements which allows displacement thereof for the cutting operations. The pusher according to the invention allows the displacement of elements of small section in a magazine of large section. At the end of a cutting operation, the pusher applies its blank against the auxiliary holding clamp forming a continuous surface and the element is pushed by a blade, the body of the pusher being immobilized.

Pusher for magazine of irradiated fuel elements

Growing community of inventors

Chatenay-Malabry, France

Daniel M Kerlau