In some cases the screening methods will indicate that a SIF is needed. These screening methods can be designed to determine how many orders of magnitude risk reduction is needed, allowing a required SIL to be documented for a particular SIF . The screening method used to establish compliance with…
IEC 61508 in the Safety Automation Equipment List
Parts I and II of this article provide a framework for when it is appropriate to make the transition from qualitative analysis to more quantitative during the hazard review work process. It further illustrates that LOPA can be used as part of what is considered more qualitative analysis as well…
exida, an accredited global functional safety certification company, has certified the product reliability and the engineering change processes for the Magnetrol® 705-51A Eclipse® Series Level Transmitter as Safety Integrity Level (SIL) 3 capable per IEC 61508. “A Failure Mode Effect and Diagnostic Analysis (FMEDA) confirmed that the Magnetrol® 705-51A is…
IEC 61508 in the Safety Automation Equipment List
Last week a security researcher, Dillon Beresford of NSS Labs, presented at the Blackhat conference on the security vulnerabilities he found in Siemens PLC firmware. One of many stories on Dillon’s findings can be found here . Among other things, Dillon found “dancing monkeys” in the code! Actually, what he…
exida, an accredited global certification company, has certified the RTP 3000 control system for functional integrity, ensuring that it meets the cyber-security requirements of the ISA Security Compliance Institutes’ (ISCI) ISASecure Level 2, and the functional safety requirements for Safety Integrity Level (SIL) 3 capable per IEC 61508. “The RTP…
Over the years I have heard good ideas rejected. We have all done this and observed others doing the same. As far as safety equipment, I recall when the first safety certified pressure transmitter , the Moore 345, was released to the market. Several potential customers said “it doesn’t solve…
Award Recognizes Honeywell’s Commitment to Stringent Cyber Security Standards BRACKNELL, United Kingdom, July 14, 2011 – Honeywell (NYSE:HON) today announced that its Safety Manager solution has been awarded ISASecure™ Embedded Device Security Assurance (EDSA) certification by exida, the organization that conducted the stringent assessment. Honeywell Process Solutions (HPS) is the…
The third and final seminar in this Web Series will highlight the Operations Phase. Safety Integrity depends on the test and maintenance activities in the operational phase of the safety lifecycle. No design, no matter how good, can provide protection when it is disabled or degraded. The primary challenge is…
The second seminar in this Web Series will highlight the Design Phase. The Design Phase addresses the activities starting with the conceptual design of the safety instrumented system through the validation of the completed system. Areas addressed in the Design Phase include: • Conceptual safety instrumented system design • Selection…
We have CMMI processes at CL3; does that help us get IEC 61508 certification for SIL 3? Companies that deliver a product or service do so by following a sequence of processes. High quality deliverables are a result of high quality processes and continuous improvement in those processes. Improving the…
The first seminar in this Web Series will highlight the Analysis Phase. The Analysis Phase addresses the activities starting with the risk analysis of the process through creation of the safety requirement specification. Areas addressed in the Analysis Phase include: • Risk Analysis • Protective Layer Design • SIL Targeting…
exida Partner Dr. Peter Clarke has a feature article in the latest issue of Control Engineering Asia entitled “Setting the Standard.” Dr. Peter Clarke explains how process plants can benefit through proper and careful adoption of the IEC 61511 safety standard.
Dr Peter Clarke explains how process plants can benefit through proper and careful adoption of the IEC 61511 safety standard.
Honeywell announced that their Safety Manager is the first platform to gain ISASecure certification on Monday, June 13, 2011 at the Honeywell User Group. Exida performed the certification per the ISASecure Embedded Device Security Assurance (EDSA) program which focuses on the security of industrial control devices such as PLC, DCS,…
One of the unexpected outcomes of STUXNET is the extent to which it has aroused the “security researcher” community and has turned their attention from commercial IT products to industrial automation and control systems. While their motives vary, from seeking recognition and monetary gain to intending to cause harm, the…
In the performance based design framework of IEC 61511, the designer has the freedom to pursue cost optimization goals. However, the designs must be verified to meet the performance requirements of the standard. These design requirements can be simplified into three essential issues: 1. SIL capability 2. PFD avg 3.…
One of the objectives of new performance based standards like IEC 61508 is to allow performance metrics (like PFDavg for low demand systems) to identify the weak links in any proposed design. Obviously, it is not necessary to put effort into design and spend money on areas of the design…
Webinar Title: “Security Vulnerabilities: Stay One Step Ahead” Date: Thursday, June 9, 2011 Times: Session 1: 9:00am-10:00am EDT Session 2: 4:00pm-5:00pm EDT Instructor: John Cusimano One of the unexpected outcomes of STUXNET is the extent to which it has aroused the “security researcher” community and has turned their attention from…
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