Frequently Asked Questions
We have a project where, for the Safety Functions with Voted Sensors, there are cases where instruments have individual taps for process connection, while in other cases, process connection to the sensors is through a common tap. With that being the case,
Last Updated a year ago
The typical approach in the process industry is to not use common taps for safety functions. You could account for the common tap by increasing the common cause factor on the redundant sensor configuration to 20-30%. Alternatively, you could decide to model the redundant configuration as 1oo1 since they are relying on the single tap.