Dear Forum Members,
Mixed butane is the feed stock for our plant. the mixed butane line entering our petrochemical complex runs 2km inside the complex and enters our battery limit. we are the only consumers of mixed butane in our complex. the mixed butane is supplied by one of the largest refinery and it supplies to all the petrochemical plants in the corridor.
Piping:
Just after entering the fence there is a ROV ( operation from control room) on mixed butane line, followed by metering skid.
After metering skid the line stretches 2km before entering the plant battery limit.
after entering battery limit the line enters the mixed butane sphere, sphere is provided with sil3 protection for highlevel and pressure.
i am attaching rough schematic for better understanding.
Complex fencePlant battery limit.docx 22.55KB 13 downloads
Question:
In earlier design there is rov followed by metering skid.
but since 15 years the rov and metering skid are bypassed by providing bypass line ( the reason for bypassing and documents are not available).
while doing the phar study we came across this issue.
1. What is the importance of this ROV.
2. Is there any standard for providing rov at fence on butane lines.
Appreciate your support and guidance on above queries.