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Title: Period meter for reactors

Patent ·
OSTI ID:862441

An improved log N amplifier type nuclear reactor period meter with reduced probability for noise-induced scrams is provided. With the reactor at low power levels a sampling circuit is provided to determine the reactor period by measuring the finite change in the amplitude of the log N amplifier output signal for a predetermined time period, while at high power levels, differentiation of the log N amplifier output signal provides an additional measure of the reactor period.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
DOE Contract Number:
W-31109-ENG-38
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Number(s):
US 3931522
Application Number:
05/509,971
OSTI ID:
862441
Country of Publication:
United States
Language:
English