Operation and maintenance teams bear a heavy responsibility to ensure that the Safety Instrumented System integrity and reliability is sustained. Decisions made long before operation begins, or outside the operating environment often impact the ability to be...
This paper introduces a benchmarking technique we call Predictive Analytics (PA). Using a large set of data from FMEDA results in combination with validated field failure data, upper and lower reasonability bounds for instrument device failure rates can be...
The purpose of this document is to report on our successful efforts to validate statistically certain random equipment failure rate data used in a mechanical parts failure rate and failure mode database and, by extension, to validate the techniques used to derive the...
In order to assign a SIL to equipment in low demand applications, we must be able to compute PFDavg. To compute PFDavg, we must first have a model for λD(t), the failure rate of the equipment in the dangerous failure mode. A dangerous failure occurs when equipment...
Safety Instrumented Systems (SIS) are designed to provide automatic protection functions. A typical design includes a sensor to detect the potentially dangerous condition, a safety PLC and a remote actuated valve capable of taking action to prevent an accident. In a...
