hi, what plant detail would you require?
I will try and do it tomorrow however there is about 500mm of ice around the pumps....
at the end of 16hrs should be -12
the LLSV is simply turned on/off via a switch at the plate stack by the operator not via the PLC ( I know very primitive )
I will start checking all strainers soon its on my list to do, the maintenance manager there told me they haven't been done since he started 4 odd years ago..
there is no strainers upstream of the LLSV until you return to your LP POT

on a side note I also found the recirculation rate of the plate is apparently suppose to be 8:1, please excuse me for being so new to this type of system but I have no idea how to measure/check/set this