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Two-tier, fail-safe IPS

20 August 2013

Systems integration company, Hima-Sella has announced that it is set to develop and provide a two-tier, fail-safe Instrument Protection System (IPS), for use in the nuclear industry, with the primary level of protection implemented using HIMA’s Planar4 solid-state logic solver.

Earlier this year, and under the rigorous EMPHASIS assessment methodology, the modules of the Planar4 logic solver secured approval for use in safety systems in the nuclear industry.

The secondary level of protection within the IPS will be implemented using plug-in relay logic. Also, and in accordance with IEC 61508, the solutions for the two IPS levels will be developed by two independent engineering teams, using separate production facilities, within Hima-Sella.

Through interfacing with temperature, pressure and other sensors, as well as valve actuators and pumps, the two-tier IPS should be able to perform automatic emergency shut downs as well as respond to manual trips. The project also includes the provision of a number of HMI matrix panels, which will enable operators to view and respond to process and alarm conditions.


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