Apparatus and method for insitu inspection of pressurized vessel

Details Apparatus and method for insitu inspection of pressurized vessel Apparatus and method for insitu inspection of pressurized vessel

1995-10-25

1997-02-18

Tran, Thai Q.

Television

Special applications

Hazardous or inaccessible

348 85, 348 83, H04N 718

Patent

active

056045328

ABSTRACT:
An apparatus and method for inspecting the internal surfaces of a pressurized vessel, without disturbing the pressurized environment within the vessel. A specially configured apparatus is inserted through an open bore valve and emulates a chamber having like pressure with the pressurized vessel. A camera housing containing a CCTV camera is inserted through an open bore valve to enable in situ inspection the interior of a pressurized vessel without having to bleed off this pressure. The camera is inserted into the interior from a sealed connector pipe. A camera housing assembly gains entry to a predetermined depth in the vessel by a sealed reach pipe which rotates freely under pressure. A control pipe located axially inside the reach pipe controls camera tilt.

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patent: 5084764 (1992-01-01), Day

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