core barrel

core barrel

[′kȯr ‚bar·əl]
(design engineering)
A hollow cylinder attached to a specially designed bit; used to obtain a continuous section of the rocks penetrated in drilling.

core barrel

The hollow cutting tool of a core drill; consists of a section of pipe which has a carbide insert or diamond cutting edge.
References in periodicals archive ?
For the residual heat removal in modular HTGR, after accident, no forced cooling for the core is required; residual heat is removed from core through the core, reflector, and core barrel and then out of pressure vessel, by means of heat conductivity, radiation, and convection, along the temperature gradient.
The core of this method is to clean the core and inject a certain amount of simulated formation oil after ensuring that it is saturated with water and then simulate the drop of core barrel pressure to obtain the correlation formula of water saturation before core degassing and saturation after degassing:
As you drill down, a core of rock goes up into a core barrel that's nine point six meters long--thirty feet.
The technology incorporates sonic frequencies that match the resonant energy of the ground, allowing the core barrel to easily advance in unconsolidated and difficult overburden formations.
Among the topics are dosimetry assessments for the reactor pressure vessel and core barrel in British pressurized water reactor plants, the sensitivity of adjustment to parameter correlations and to response-parameter correlations, Los Alamos National Laboratory fission basis, reactor pulse-repeatability studies at the Annular Core Research Reactor, and developing neutron measurement in intense gamma fields using a new type of nuclear emulsion.
Continuous representative cores were retrieved using a 100mm internal diameter 3 metre core barrel with complete undisturbed intervals recovered from the mineralised sections.
The 70-employee plant makes core barrel, drill rods and other in-hole products for clients worldwide.
The adjustable speed, hydraulic top head with direct reading tachometer allows you to set the rotary speed control to match the size of the core barrel and type of material being drilled, including re-bar.
One is for the basic design of a key structure called a core barrel assembly (CBA), part of the pebble bed modular reactor (PBMR), and the other is for provision of forgings and procurement of items for the CBA.
The communication device fixed in rear part of core barrel will safeguard transmission of measuring data from strain gauge probe to data recorder or to data concentrator (DR).