RE: At last30 Nov 2021 21:02
Yanis2005,,
Ress2003, so you will route the gas to the flare stack to check instrumentation.
Three questions:
1) Do you mean that this simulation is done to check all the instrumentation? Including that on the HPC and gas export metering and analysers?
No,, the simulation can be done to check parts of the instrumentation, and like I’ve pointed out, but can be done in away where you can check the GEU or gas analyses, the HPC will be down stream of the GEU and just before the ROV, so if things aren’t in spec then the gas is rejected and what we called Recirculated, then on gas to grid day everyone will be onsite for the HPC and NGN, and when everything is in spec, NGN will open the ROV and the HPC will run, but they will have commissioned the HPC before hand tho,
2) You did say that the flare stack will be rated for this purpose? What would the flare pressure rating be?
I’ve just told you it’s not the flare that’s rated it’s the motor I.e the booster,, it could be millibar, or bar pressure not seen the spec, but we use regulating valves that help with all values of pressure,
3) You are talking about a DCS and PLC. How many PLCs do you recon will be required and where?
You will have one for the site the scada or DCS, that’s what the op’s will be watching and monitoring, the Elster comes with its own plc and scada or DCS, the HPC will have one and a scada or touch screen, all of these will be integrated and what we calls comms between all the bits of kit ,
The instrumentation, valves, flowmeters, flare stack will work of the site scada but there will be set points and HH and LL that will triggers certain set points that all work integrated with each other, if anyone wonts my email address I can send pictures of all of this so you can see for yourself, it sounds really complicated but it’s not, as Elster will work with the main company doing the site PlC and the same with the HPC, it’s just a PLC