Darryl L Gordon

US Patent:

54224926, Jun 6, 1995

Filed:

Feb 28, 1994

Appl. No.:

8/202315

Inventors:

Barry S. Lecik - Altavista VA
Darryl L. Gordon - Lynchburg VA

Assignee:

The B&W Fuel Company - Lynchburg VA

International Classification:

G21F 504

US Classification:

2504961

Abstract:

A device for calibrating a criticality detector for a nuclear fuel manufacturing plant having a radiation source comprises a radiation protective holder for containing the radiation source. The holder is aligned with the criticality detector along an axis; and a measuring rod having a plurality of calibrations is connected to the criticality detector and positioned near the holder parallel with the axis. A nylon guide is connected to the holder and movably connected to the measuring rod for moving the holder and the radiation source along the axis for detection purposes while providing a calibration measurement.