Representative End User Clients
Representative Automation Clients
Representative Software Clients
Despite the application of a wide variety of safeguarding measures, accidents continue to occur across the process industries. Experience gained from past accidents has led to the development of an increasing number of technical solutions. Safety instrumented systems (SIS) represent one of the best known and widely accepted of these technical solutions.
To control the design and implementation of these technical solutions, numerous safety-related standards have emerged. These standards consist of technology-oriented requirements defining “adequate” implementation of the designed solutions. It’s often considered to be “good engineering practice” to comply with these standards. Unfortunately, this did not prevent several major accidents from occurring. Because of the continuously growing complexity of both industrial processes and the related safety instrumented systems (SIS), a new problem has surfaced: how to better manage the safety systems over time.
Safety Lifecycle Management a Big Issue
Safety lifecycle management in general continues to be a big issue in process plants. This is driven largely by the need to conform to current standards and best practices like ISA-84 and IEC61511. The primary goal of these standards and practices is to develop a continuous improvement approach to safety system management and ease the burden on end users so they better understand the safety status of their assets and can act appropriately when needed.
Recent updates to the standards highlight the need to focus on the total safety lifecycle. This challenges the myth that once a system is designed and commissioned, no further effort is required on the part of the end user. To the contrary, the work has just begun and, in general, end users are poorly prepared to address the safety lifecycle to meet industry best practices.
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Keywords: SIS, Process Safety Lifecycle Management, IEC61151, ISA-84, ARC Advisory Group.