Johnson Matthey Public Limited Company

Francis O'Doherty

Owen John Lloyd Jones

Emanuele Ronchi

Paul David Featonby

Tor Magnus Saevareide

John Somerton

A subsea apparatus and method for scanning a subsea structure to detect differences in density between different parts of the subsea structure is described. A source of gamma radiation and a plurality of detectors arranged to detect gamma radiation emitted by the source are provided. The subsea structure is positioned between the source and the detectors, and the detectors and the source rotated in a fixed relationship to each other about an axis of rotation located between the detectors and the source. The plurality of detectors are arranged in a linear array, the linear array being substantially parallel to the axis of rotation. A pixelated detector array and a source container are also disclosed.

Apparatus and method for scanning a structure

An apparatus and method for determining a level of a fluid within a vessel are disclosed. The apparatus includes: a source unit for emitting a beam of radiation into the interior of the vessel, the source unit including a source of radiation and a collimator for collimating radiation emitted by the source to provide the beam, wherein the source unit is adjustable to vary an angle of the beam with respect to horizontal; at least one detector for detecting radiation emitted by the source and having passed through at least a portion of the interior of the vessel; and a processor for: recording data corresponding to an amount of radiation detected at the at least one detector as a function of angle of the beam; and determining the level of the fluid, based on a variation of the data with the angle of the beam.

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Billingham, United Kingdom

Francis O'Doherty