Logic safety system

Details Logic safety system Logic safety system

1981-11-13

1985-12-31

Cangialosi, Sal

Induced nuclear reactions: processes, systems, and elements

With control of reactor

By electronic signal processing circuitry

376259, G21C 1700

Patent

active

045620350

ABSTRACT:
A logic safety system is disclosed having four redundant channels with each channel constituted by a logic circuit for controlling the triggering of a protective action, a logic alarm circuit connected to the control circuit and a logic inhibition circuit which makes it impossible to simultaneously inhibit several alarm circuits. Any attempt at inhibiting the alarm circuit of a second channel while an alarm circuit of a first channel is already inhibited will result in the automatic appearance of a protective action control signal at the output of the second channel regardless of the signal received at the input of the alarm circuit of the second channel.

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Conf. on Reactor Operating Experience, (8/8-11/71), Denver Col., Geesey et al., pp. 35-36.
IEEE Transactions on Computers, vol. C-29, No. 3, Mar. 1980, IEEE, New York, S. Y. H. Su et al.: "A Hardware Redundancy Reconfiguration Scheme for Tolerating Multiple Module Failures", pp. 254-258.

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