Johnson Matthey Public Limited Company

Johnson Matthey Inc.

Paul David Featonby

Emanuele Ronchi

Peter Jackson

Kenneth James

James Stephen Howstan

Christopher Bowdon

Thomas Partington

Benjamin Metcalfe

Geoffrey Stuart Howe

Timothy Hough

Francis O'Doherty

Owen John Lloyd Jones

John Somerton

Alan Roy Jones

Sara Hillary Margaret Gibson

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.

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

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

A detector probe, for detecting ionizing radiation and which is suitable for use in a nucleonic instrument usable in locations having a high ambient temperature, includes an array of radiation detectors mounted on a support and a heat pipe for cooling the detector probe. The nucleonic instrument incorporating such a detector probe is also described.

Radiation detector

An apparatus for scanning a structure to detect density differences between different structure parts, the apparatus includes a source of gamma radiation, a plurality of first detectors arranged to detect radiation emitted by the source along a plurality of respective first paths, a plurality of second detectors arranged to detect radiation emitted by the source along a plurality of respective second paths. Each first and second path is substantially aligned with a respective radius of a circle centered on the source, and an angular separation between at least two neighboring first paths is S. The first and second detectors and the source are arranged for rotation in a fixed relationship with respect to each other, about an axis of rotation located between the source and detectors, wherein the axis of rotation is substantially orthogonal to the circle. An asymmetric collimator block directs gamma radiation from the source to the detectors.

Apparatus and method for scanning a structure, and collimator therefor

A subsea apparatus () is disclosed. The subsea apparatus () comprises a first part () and a second part () rotatably mounted on the first part (). The second part () comprises electrically powered components (). A motor () is mounted on the first part () and configured to drive rotation of the second part () relative to the first part (). The apparatus also comprises a generator () mounted on the second part () such that rotation of the second part () relative to the first part () drives the generator () to generate power for the electrically powered components (). A method of providing power to a rotating part of a subsea apparatus () is also disclosed.

Subsea apparatus for monitoring density or integrity of a subsea structure or its contents and method for generating power on a rotating part of a subsea apparatus for monitoring density or integrity of the subsea structure or its contents

An apparatus and method for scanning a structure for detecting variations in density of a structure, the apparatus () includes: a source of radiation (); a plurality of detectors (), arranged for receiving radiation emitted by the source along a plurality of respective paths (); the apparatus configured such that, a structure () to be scanned is positionable between the detectors and the source; collimation elements () including a plurality of collimator channels (), each located between a respective detector and the source; and collimation adjustment element (). The apparatus, in a first configuration, provides a first resolution (r) in an axial direction substantially orthogonal to a plane including the source and plurality of paths; and, in a second configuration, the collimation adjustment element is positioned between the collimation elements and the source such that the apparatus provides a second resolution (r) in the axial direction; wherein r&#x3c;r

Scanning method and apparatus

A scanning method which is a method of identifying a change in the density of an object includes arranging a source of ionizing radiation and an array of radiation detectors Dn, where n is an integer from 1 to N, capable of detecting the radiation in such a way that radiation counts are counted by the detectors as the source and detectors are rotated around the object and normalized counts values are collated in a matrix such that a pattern may be detected within the matrix from which the presence of a change in the density of the object at a location lying on at least one of the radiation paths may be inferred.

Scanning method

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

The invention provides a detector assembly for use in a nucleonic level gauge comprising:

Level measurement apparatus

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.

Growing community of inventors

Wylam, United Kingdom

Paul David Featonby