G - Physics – 21 – C
Patent
G - Physics
21
C
359/39
G21C 19/02 (2006.01) G21C 17/10 (2006.01)
Patent
CA 1306314
Instrumentation device for the core of a pressurized water nuclear reactor and process and device for withdrawing and for installing this instrumentation device ABSTRACT The instrumentation device comprises a horizontal plate (31) arranged below the vessel (1) closure head (3) through which instrumentation columns (27) pass, carrying measurement conduits internally (26). The distribution plate (31) carries vertical guide tubes (38), into each of which a measurement conduit (26) is introduced. Each of the vertical guide tubes (38) is engaged into a tubular brace (17) of the upper internal equipment of the reactor, to ensure the guidance of the measurement conduit (26) from the instrumentation column (27) to an instrumentation guide tube (30) of a reactor core assembly (5). The dis- tribution plate (31) is fastened in a removable manner to the plate (18) supporting the upper internal equipment of the reactor and may be raised relative to the upper inter- nal equipment for withdrawing, as a unit, the measurement conduits (26) from the instrumentation tubes of the core assemblies, when the closure head (3) is removed. Figure 2.
607463
Framatome
Robic
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