@Tomasz Barnert Hi Tomasz, our activities as the Principle Contractor will be to manage the Functional Safety. We are in very early stages at present (FEED) and expected to kick-off into Detail Design within the next few months. I will then develop the a Project Functional Safety Management Plan which will cover the management of the Vendor packages, however I need more information from the Vendors to see what level of detail we need to dive into with them. Yes, my Client will be carrying out SIL determination (LOPA) post HAZOP, however the Client will be initially carrying out a HAZOP for the full plant, which includes the central plant control connecting all the Vendor packages and Utilities. I have just been speaking with our process safety engineer and he has advised they are HAZOP'ing the full package as they have noticed some process concerns on their P&ID's such as no over-pressure protection. This is obviously a concern, but a relief in a way that the package is now going to be HAZOP'd fully by our team so we can then determine the correct level of SIS required compared to what the Vendor has designed for. As you can tell, this is a little bit out my comfort zone with the scale of this particular vendor skid (includes it's own BPCS, SIS and Burner Management System), however, I am sure the confidence will start build (or fall?!) as the project unfolds ...

Thanks Richard, that is good to know 👍

I have checked the safety manual and it doesn’t specifically ask for a full calibration, just a two point calibration (which effectively I do as I ask for the user to measure the ambient as-found temperature and convert to mA, and take simulate the trip temperature which I also ask to convert that to mA as part of the check). We have now given the RTD 85% PTC based on simulating the temperature from the RTD head as it was not possible to bring real life conditions up to the desired trip temperature safely. They have put the request to remove in writing as part of a Human Factors Study Report, so I guess I am covered removing it?!

Hi Carl, no the RTD probe is mounted above a gas turbune so not easy to do in situ, and the client requested they did not want to remove the probe for bench testing; rather just reduce the PTC%

Hi Richard, sounds like a great idea, just depends on date and time which is allocated, but if free, I would certainly like to join 👍

I’m in