IS410STCIS2A IS400STCIS2AFF Calculating Dual Transmitters


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IS410STCIS2A IS400STCIS2AFF Calculating Dual Transmitters

IS410STCIS2A IS400STCIS2AFF facilitates a comprehensive review and dialogue on the causes and effects of bypassing a particular tool. It helps to review the situation and the choices made, while assessing the feasibility of bypassing the tool and enumerating the steps to be taken thereafter. The beta factor used to estimate the percentage of common cause failures under different conditions using the methodology described in the ISA 84.01 TR2 technical document.

IS410STCIS2A IS400STCIS2AFF The objectives of a performance-oriented fire and gas study, the methodology used to evaluate the efficiency of a customer’s fire and gas system, and the tools and calculations needed to identify the fire and gas coverage area. The worksheet calculates the failure rate of a component, allowing the user to configure the confidence level, e.g. 70% as recommended by the IEC 61508 standard. A structured format is provided for performing straightforward failure mode, impact and diagnostic assessments.

IS410STCIS2A IS400STCIS2AFF is particularly useful for evaluating the global failure characteristics of systems with multiple components, such as dual transmitters for differential pressure calculations, or installations involving solenoids, actuators, and valves with partial stroke tests. Typically, failure statistics from suppliers are categorised into high, low and hazardous failure types (detected or not detected).