Kenexis is focused on working with your organization to make your operations safe, secure and reliable.

Our independent engineering consulting firm provides Safety Instrumented System (SIS) services including the establishment of Safety Integrity Level (SIL), developing Safety Requirement Specifications (SRS), and quantitative design Verification (SIL Verification). Kenexis analyzes the risks associated with process plant operations using different techniques including PHA, LOPA and QRA. Likewise, we provide Fire & Gas Mapping services including performance target selection, detector placement and coverage assessments. Our Industrial Cyber Security team provides industrial control system services including design, vulnerability assessments and incident response.

Our services help our clients to comply with appropriate regulations and standards, and benchmark their performance and processes against industry best practices. These services allow our clients to have best in class safety, security, and reliability.

We actively participate and contribute to industry standards and best practices. These include ISA 84/IEC 61511 Safety Instrumented Systems (SIS) used in the Process Industries, ISA/IEC-62443 (formerly ISA-99) Industrial Automation and Control Systems Security.


Design of SIS Bypasses

December 6th, 2016|Comments Off on Design of SIS Bypasses

The mechanism for the bypass needs to meet the requirements of the IEC 61511 (ISA 84) standard.  The relevant sections from the 2016 version of IEC 61511 are as follows:  Where the SIS operator [...]

Security PHA Review (SPR) and Security Levels

December 6th, 2016|Comments Off on Security PHA Review (SPR) and Security Levels

After reading an ISA article related to the application of Security PHA Review (SPR) for the determination of required security levels for Industrial Control Systems (ICS), as required in IEC 62443 [ISA 99], a Kenexis customer [...]