Functional Safety
LOPA Explained: How Layer of Protection Analysis Bridges HAZOP and SIL
A HAZOP tells you what can go wrong. A SIL target tells you how reliable your protection has to be. Layer of Protection Analysis i...
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15 results for “LOPA” Clear
Functional Safety
Process, Machinery or Industrial Automation? Picking the Right Functional Safety Certification Track
Functional safety certification is not issued in general. It is issued in an application area, and the certificate names that area...
OT Cybersecurity
What If the Firewall Fails? Cyber-Informed Engineering and the Return to Engineering Judgment
Almost every OT security control assumes it will work. Segmentation assumes the firewall rules hold. Access control assumes creden...
Functional Safety
SIF, SIS and BPCS: What Each One Is and Why Confusing Them Costs You at Assessment
Three acronyms that appear constantly in functional safety documentation and get used loosely in conversation. The distinction is...
Functional Safety
SIL Assessment for Oil and Gas: What Upstream, Midstream and Downstream Operators Need
Oil and gas carries more safety instrumented functions per facility than almost any other sector, and the SIL requirements differ...
Functional Safety
SIL Determination, Verification and Validation: Three Different Things People Keep Confusing
These three terms appear in the same specifications, get used interchangeably in conversation, and describe genuinely different ex...
Functional Safety
What SIL Level Do You Need? How Safety Integrity Level Targets Are Actually Set
A Safety Integrity Level describes how reliably a safety function has to work. SIL 1 is the lowest and SIL 4 the highest, and each...
Functional Safety
SIL Verification: How to Prove Your Safety Function Actually Achieves Its Target
SIL determination tells you what integrity a safety function needs. SIL verification proves the system you actually built delivers...
Functional Safety
Functional Safety for Battery Storage and Hydrogen: New Hazards, Same Lifecycle
Grid-scale battery energy storage and hydrogen production are being built by organizations with deep functional safety capability...
Functional Safety
Functional Safety Assessment: What Happens at Each of the Five Stages
A functional safety assessment is a structured examination of whether your safety instrumented system genuinely achieves the safet...