Radiant energy – Invisible radiant energy responsive electric signalling – With means to inspect passive solid objects
Patent
1987-05-04
1988-11-15
Howell, Janice A.
Radiant energy
Invisible radiant energy responsive electric signalling
With means to inspect passive solid objects
250253, 250266, 2503581, G01V 510
Patent
active
047851759
ABSTRACT:
A method of inspecting the cover of a buried pipeline comprising the operations of irradiating the inner wall of the pipeline with neutrons from a radioactive source carried by a vehicle traversing the pipeline, measuring the intensity of ionizing radiation within the pipeline arising from nuclear interactions occuring within the cover of the pipeline and its surroundings due to the neutrons emitted by the source, and recording the measured intensity of the said ionising radiation together with data representative of the position of the vehicle along the pipeline. Apparatus for carrying out the method also is described.
REFERENCES:
patent: 2398324 (1946-04-01), Pontecorvo
patent: 2940302 (1960-06-01), Scherbatskoy
patent: 2997586 (1961-08-01), Scherbatskoy
patent: 3060315 (1962-10-01), Scherbatskoy
patent: 3202822 (1965-08-01), Kehler
patent: 3546456 (1970-12-01), Grice
patent: 4146791 (1979-03-01), Dahl et al.
Clayton Colin G.
Sanders Lionel G.
Wormald Malcolm R.
British Gas plc
Hannaher Constantine
Hinds William R.
Howell Janice A.
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