Induced nuclear reactions: processes – systems – and elements – Testing – sensing – measuring – or detecting a fission reactor... – Vessel monitoring or inspection
Patent
1982-05-11
1985-02-26
Cangialosi, Sal
Induced nuclear reactions: processes, systems, and elements
Testing, sensing, measuring, or detecting a fission reactor...
Vessel monitoring or inspection
G21C 1700
Patent
active
045017166
ABSTRACT:
An arrangement for inspecting a reactor vessel immersed in a water-filled tank (31) comprises a mast carriage which is arranged for movement around the opening of a reactor vessel and which has fixedly connected thereto a mast which carries a track means (10) on which inspection apparatus (19) can be driven. To render it unnecessary to lift the mast carriage and mast into the reactor hall when, for example, replacing inspection apparatus, there is arranged, in accordance with the invention, on the upper end (20) of the mast a docking unit (21) which is provided with a second track means (22) connecting with the first track means (10). A carriage supporting the inspection apparatus can be driven onto the second track means. Guide means (36, 37, 38, 40) are arranged between the docking unit and the mast, and guide ropes (47, 48) for guiding the docking unit, which is provided with a buoyant body, up to the surface of the tank (30) and to guide and pull the docking unit back to its working position on the mast top.
REFERENCES:
patent: 3699436 (1972-10-01), Shigematsu et al.
patent: 3801050 (1974-04-01), Stone
patent: 3901073 (1975-08-01), Dent et al.
patent: 3943756 (1976-03-01), Aubert et al.
patent: 4083520 (1978-04-01), Rupp et al.
patent: 4165254 (1979-08-01), Reyes
patent: 4169758 (1979-10-01), Blackstone et al.
Cangialosi Sal
Tekniska Rontgencentralen AB
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