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What was Said, What was not Said

Published: March 18, 2025 | arXiv ID: 2503.13958v1

By: Hamid Jahanian

Potential Business Impact:

Helps keep factories safe by checking safety plans.

Business Areas:
Industrial Engineering Manufacturing, Science and Engineering

In the process industry, the configuration of Safety Instrumented Systems (SIS) must comply with a defined set of safety requirements, typically documented in the Safety Requirements Specification (SRS). The functional safety standard IEC 61511 outlines the necessary content and quality criteria for the SRS. However, developing an effective SRS can be challenging. This article examines some of these challenges and proposes good practices to address them. It discusses SRS ownership, "staged" development of SRS, and the classification and traceability of requirements. Additionally, it explores the issue of untold "negative" requirements and suggests exploratory "inspection" of SIS Application Programs (APs) as a potential remedy.

Page Count
9 pages

Category
Electrical Engineering and Systems Science:
Systems and Control