Whether you are an automated supplier, integrator, end-user, or an automotive OEM, exida can guide you through the complex issues of functional safety, cybersecurity, and alarm management.
This is an excellent explanation to proof test. Thank you very much. I had a confusion on the practice in some companies who conduct Interlock checks in which interlocks are triggered by simulating values, and people check the final element status to verify the loop works as design. The interlock check to me is more of a function test to the SIF, and proof test should conducted separately, am I right about it?
Thanks for the information. There are some customers who ask for a SDV valve using 1oo1 configuration with manual reset device, the safety-PFDavg will decrease using this configuration?
Does the ARCHx support also the normal DFMEA? Does it allow for modelling System Structure, Interfaces, Functions and Failure Modes? Thank you in advance
Can I ask, what do you mean when you say 'Anunciated' fault. Do you mean Latent fault? Also for each fault (row) where do you list your different safety mechanisms covering it (there may be multiple, each with a different Diagnostic coverage). Thanks
one Dout, in the architecture/schematic external power supply has no connection to the flasher control circuit, why do we require external power supply????
Probability of failure is 0 because the process is down? My devices cannot fail between batches? Does the PFD equation not come from integrating the probability of failure over a time period for the purpose of capturing the accumulated failures over that time period?? I can see how you could adjust the initiating event frequency based on downtime or use a time at risk modifier for something like this but I don’t think it’s appropriate to account for this in the PFD calculation
The most important takeaway from this information is that managing cybersecurity risk in the modern landscape is challenging due to various factors, including the proliferation of third-party vendors, evolving technologies, and increasing regulations. Effective cybersecurity risk management requires a holistic approach where everyone in the organization shares ownership and responsibility for risk. This involves identifying, assessing, and mitigating risks while continually monitoring internal controls to align with risk. Additionally, organizations can benefit from using frameworks and tools, such as the NIST Cybersecurity Framework and analytics, to navigate these challenges and maintain security across the enterprise.
