X-ray or gamma ray systems or devices – Specific application – Absorption
Patent
1981-06-26
1983-10-18
Smith, Alfred E.
X-ray or gamma ray systems or devices
Specific application
Absorption
378058, G01N 2318
Patent
active
044110146
ABSTRACT:
An inspection tool for detecting any flaws or defects in the upper end of a string of casing set in the bottom of a body of water. The tool has a cylindrical housing carrying a radiographic-sensitive film which fits over the open end of the string of casing and a radiographic source supported in the axis of the cylindrical housing. Means are provided for raising and lowering the tool.
REFERENCES:
patent: 2390211 (1945-12-01), Forssell
patent: 3214586 (1965-10-01), Graham
Gassett John D.
Grigsby T. N.
Smith Alfred E.
Standard Oil Company
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