Johnson Matthey Public Limited Company

Johnson Matthey Inc.

Peter Jackson

Paul David Featonby

Kenneth James

Emanuele Ronchi

James Stephen Howstan

Christopher Bowdon

Thomas Partington

Benjamin Metcalfe

Robert Simon Knapp

Christopher Bowden

Thomas John Partington

The invention discloses a scanning method and apparatus suitable for scanning a pipeline or a process vessel in which a beam of gamma radiation from a source is emitted through the pipeline or the process vessel to be detected by an array of detectors, which are each collimated to detect gamma radiation over a narrow angle relative to a width of the emitted beam of gamma radiation.

Scanning method and apparatus comprising a buoyancy material and a remotely operated vehicle (ROV) for scanning an underwater pipeline or a process vessel

Scanning method and apparatus comprising a buoyancy material for scanning an underwater pipeline or a process vessel

Disclosed herein are a scanning method and apparatus suitable for scanning a pipeline or process vessel in which a beam of gamma radiation from a source is emitted through the vessel to be detected by an array of detectors which are each collimated to detect radiation over a narrow angle relative to the width of the emitted radiation beam.

The invention discloses a scanning method and apparatus suitable for scanning a pipeline or process vessel in which a beam of gamma radiation from a source is emitted through the vessel to be detected by an array of detectors which are each collimated to detect radiation over a narrow angle relative to the width of the emitted radiation beam.

Scanning method and apparatus comprising a buoyancy material for scanning a pipeline or a process vessel

Scanning method and apparatus

An instrument adapted for the determination of fluid levels within a vessel by the comparison of the density of the fluid along the length of the instrument, said instrument comprising: (i) at least one generally linear source array comprising a plurality of sources of penetrating radiation, shielding and collimation means and a source supporting structure for supporting the sources and shielding and collimation means in a linear array (ii) at least one generally linear detector array comprising a plurality of radiation detectors, supported on a detector support structure, capable of detecting radiation emitted by the sources, and (iii) means to position the source and a respective detector array such that (a) radiation emitted from each of the sources is capable of following a linear path from the source, through the vessel and material to at least a respective one of the detectors forming a part of the respective detector array, and (b) the linear axis of the source array and the linear axis of its respective detector array are substantially parallel to each other (iv) means for analyzing the detector output signals to determine the density of the medium traversed by the beams of radiation in passing from a source to a detector characterized in that the detector support structure and/or its associated electrical circuits and connectors is formed from a plurality of modular portions, each modular portion being adapted to be joined to an adjacent portion to provide a detector array of the required length.

Level measurement system

Disclosed is an instrument for detecting neutron backscatter from an object including a source of neutrons (), a neutron detector () capable of detecting thermal neutrons and a housing () which is impervious to water and having at least one external operating surface () for placing adjacent the object, the source and detector being located within the housing in such a way that the distance between the detector and the operating surface(s) is less than 25 mm and the distance between the detector and any other external surface of the housing is at least 50 mm.

Neutron backscatter instrument

An apparatus and method for the identification of different phases (-) in a multi-phase medium includes at least two arrays (A,B) of ultrasound transducers capable of transmitting and receiving ultrasound through the medium separating them. The method and apparatus is useful for the location of phase interfaces in vessels such as oil separators.

A density profiler for measuring a density profile of a medium including at least two liquids and gaseous phases includes an axially distributed source array providing at least 10 collimated ionising radiation beams; an axially distributed radiation detector array, each detector associated in use with one of the beams and producing an output signal in response to incident radiation; and an analysor for the detector output signals to determine the density of the medium traversed by the beams of radiation.

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London, United Kingdom

Peter Jackson