GB2023380A - Location of instruments in pipes, particularly for pipe radiography - Google Patents

Location of instruments in pipes, particularly for pipe radiography

Info

Publication number
GB2023380A
GB2023380A GB7918787A GB7918787A GB2023380A GB 2023380 A GB2023380 A GB 2023380A GB 7918787 A GB7918787 A GB 7918787A GB 7918787 A GB7918787 A GB 7918787A GB 2023380 A GB2023380 A GB 2023380A
Authority
GB
United Kingdom
Prior art keywords
instrument
location
magnetic field
pipe
source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB7918787A
Other versions
GB2023380B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Redmayne & Sons Ltd S
Original Assignee
Redmayne & Sons Ltd S
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Redmayne & Sons Ltd S filed Critical Redmayne & Sons Ltd S
Publication of GB2023380A publication Critical patent/GB2023380A/en
Application granted granted Critical
Publication of GB2023380B publication Critical patent/GB2023380B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/081—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices the magnetic field is produced by the objects or geological structures
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B42/00—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means
    • G03B42/02—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means using X-rays
    • G03B42/028—Industrial applications

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Surgical Instruments (AREA)

Abstract

A method of locating an instrument such as a radiation source for radiography, in a pipe 3 involves creating a first magnetic field by means of a magnet 63 acting on a soft iron disc 54 attached to the instrument to draw the instrument along the pipe to a predetermined position in which the disc 54 is located in the centre of the magnetic field. A second magnetic field produced by a magnet 64 can act upon slug 41 for exposing the source. The source (2) can be used for determining the accuracy of location of the instrument with respect to the weld 4 by the use of reduced shielding (17) about the radiation source when the instrument is in an inactive state, radiation then being received by detectors 67. <IMAGE>
GB7918787A 1978-06-14 1979-05-30 Location of instruments in pipes particularly for pipe radiography Expired GB2023380B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7826892A GB2025230B (en) 1978-06-14 1978-06-14 Control circuits for electrosurgicaldevices

Publications (2)

Publication Number Publication Date
GB2023380A true GB2023380A (en) 1979-12-28
GB2023380B GB2023380B (en) 1982-09-22

Family

ID=10497958

Family Applications (2)

Application Number Title Priority Date Filing Date
GB7826892A Expired GB2025230B (en) 1978-06-14 1978-06-14 Control circuits for electrosurgicaldevices
GB7918787A Expired GB2023380B (en) 1978-06-14 1979-05-30 Location of instruments in pipes particularly for pipe radiography

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB7826892A Expired GB2025230B (en) 1978-06-14 1978-06-14 Control circuits for electrosurgicaldevices

Country Status (1)

Country Link
GB (2) GB2025230B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2166214A (en) * 1984-10-25 1986-04-30 Atomic Energy Authority Uk Transport apparatus
WO2006034173A1 (en) * 2004-09-16 2006-03-30 The Boeing Company X-ray laminography inspection system and method
CN110625322A (en) * 2019-08-23 2019-12-31 北京星航机电装备有限公司 Method for quickly positioning and accurately repairing internal defect part of complex casting

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2166214A (en) * 1984-10-25 1986-04-30 Atomic Energy Authority Uk Transport apparatus
WO2006034173A1 (en) * 2004-09-16 2006-03-30 The Boeing Company X-ray laminography inspection system and method
US7050535B2 (en) 2004-09-16 2006-05-23 The Boeing Company X-ray laminography inspection system and method
CN110625322A (en) * 2019-08-23 2019-12-31 北京星航机电装备有限公司 Method for quickly positioning and accurately repairing internal defect part of complex casting
CN110625322B (en) * 2019-08-23 2020-07-28 北京星航机电装备有限公司 Method for quickly positioning and accurately repairing internal defect part of complex casting

Also Published As

Publication number Publication date
GB2025230B (en) 1983-02-16
GB2023380B (en) 1982-09-22
GB2025230A (en) 1980-01-23

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee