Safety instrumented systems (SIS) are to be followed up during operation at a facility. An important part of SIS follow-up is to ensure that all relevant SIS requirements from the design phase are fulfilled during the entire lifetime of the facility. The safety integrity level (SIL) and the...

Safety instrumented systems (SISs) implemented on petroleum installations must be highly reliable to protect human life and environment. As of today, monitoring and follow-up of technical status of SIS components require considerable manual effort by extracting and interpreting maintenance and...

Reliable failure rate estimates of safety critical equipment is crucial for verifying performance requirements and for trending the safety performance of the equipment. Joint industry efforts, like OREDA, Exida and PDS handbooks, supported by international standardization on data collection such...

Safety instrumented systems often employ redundancy to enhance reliability, but the intended effect may be reduced when common cause failures are taken into account. It is often assumed that a certain fraction of component failures will occur close in time, due to a shared cause. Unfortunately, few...

This report summarizes the work performed in PDS-BIP activity 2: "Environmental barrier indicators". The purpose of the present report is to propose a set of suitable indicators for a specified drilling scenario and to describe a methodology for developing such indicators. Oppdragsgiver...