SIS-Tech Safety System Protects From Overpressure SIS-Tech's Diamond-SIS high-integrity protective system (Hips) is used to provide overpressure protection where the opening of the pressure-relief valve poses unacceptable process safety risks. Diamond-SIS Hips is a low-cost standalone logic solver is certified for use in applications up to Safety Integrity Level (SIL) 3. API 521 and Code Case 2211 of ASME Section VIII, Division 1 and 2 allow the use of a high-integrity protective system, such as the Diamond-SIS Hips, in lieu of a pressure-relief device as long as the instrumented system meets or exceeds the protection provided by the pressure-relief device. To achieve this performance, the Hips design and management must also follow IEC 61511 and the logic solver should be compliant with IEC 61508 SIL 3. The Diamond-SIS Hips complies with these requirements. Diamond-SIS is an SIL 3 logic solver with 2oo3 voting, which provides the end user with a fault-tolerant logic solver tha...
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