Period detection instrument for nuclear reactor safety systems

Journal Article · Mon Jan 01 04:00:00 EST 1973 · Nucl. Instrum. Methods, v. 113, no. 2, pp. 207-216

DOI:https://doi.org/10.1016/0029-554X(73)90834-3· OSTI ID:4385823

Rusch, G K; McDowell, W P

A reactor-peried detection instrument featuring a high degree of freedom from scrams due to spurious signals has been designed, constructed, and tested. The technique employed is suitable for critical facilities and power reactors. Voltage level changes V(t) from a logarithmic amplifier are utilized to determine reactor period when signal levels are small, and both voltage level changes V(t) and the rate-of-change of voltage level dV(t)/dt are utilized when signal currents are large. Due to the low noise level of this hybrid circuit, the overall response speed of the log N amplifier and the dV(t)/dt period circuit can be significantly improved while greatly decreasing the chance of noise-induced scrams. (auth)

• Research Organization: Argonne National Lab., IL
• Sponsoring Organization: USDOE
• NSA Number: NSA-29-012972
• OSTI ID: 4385823
• Journal Information: Nucl. Instrum. Methods, v. 113, no. 2, pp. 207-216, Journal Name: Nucl. Instrum. Methods, v. 113, no. 2, pp. 207-216; ISSN NUIMA
• Country of Publication: Country unknown/Code not available
• Language: English

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REACTOR PERIOD
SCRAM