FASTER PIPE-WELD TESTING USES Ir$sup 19$$sup 2$

Journal Article · Thu Jan 01 04:00:00 EST 1959 · Nucleonics (U.S.) Ceased publication

OSTI ID:4300977

A fast method for pipe-weld testing that utilizes a gamma-ray source along the axis of the pipe has been developed. By this method it was possible to inspect up to 100 welds a day using 1-min exposures on 24-in. and 28-in. pipes. The radiographic source for the inspection is up to 18.5 curies of 74-day Ir/sup 192/. A cylinder is encapsulated in a steel tube with lead plugs at each end. The source is mounted on a wheeled carrier so that it moves along the axis of the pipe. Markings on the cable attached to the carrier tell the operator when to stop so that the source is opposite the weld to be inspected. Strips of Gevaert Structurix D-7 film are laid around the weld outside the pipe. Welds that connect the longer sections, the so-called "tie-in" weeds, rnust be radiographed with the source outside the pipe. A special source-holding saddle makes this possible. (J.H.M.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-13-004658
• OSTI ID: 4300977
• Journal Information: Nucleonics (U.S.) Ceased publication, Journal Name: Nucleonics (U.S.) Ceased publication Vol. Vol: 17, No. 1; ISSN NUCLA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CABLES
CAPSULES
CONFIGURATION
CYLINDERS
EFFICIENCY
GAMMA SOURCES
HALF-LIFE
INSPECTION
INSTRUMENTS
IRIDIUM 192
IRRADIATION
LEAD
MOTION
OPERATION
PERFORMANCE
PHOTOGRAPHIC FILM DETECTORS
PIPES
PLANNING
RADIOACTIVITY
RADIOGRAPHY
STEELS
STRIPS
TESTING
TRANSPORT
TUBES
USES
WELDING