Greetings,
I came across this design in one of the refineries handling Naphtha. Kindly refer to the schematic attached herewith.
Naphtha stripper column is provided with an ON/OFF valve on stripper bottom product rundown line. The purpose of this ON/OFF valve is to stop sending the OFF-SPEC...
Greetings...
I came across a piping system wherein minimum distance is not followed on downstream of isolation valve on start-up steam line. Please refer to the schematic attached herewith.
During normal operation, Isolation valve on start-up steam line will be kept closed and it will be...
Greetings,
I came across this design in one of the refineries handling Naphtha. Kindly refer to the schematic attached herewith.
Naphtha stripper column is provided with an ON/OFF valve on stripper bottom product rundown line. The purpose of this ON/OFF valve is to stop sending the OFF-SPEC...
Dear All,
What happens when a centrifugal compressor equipped with anti-surge valve is run on lighter gas than design?
(Design MW of gas= 22, Actual MW of gas=13)?
Does it leads to surge?
Thanks and Best regards,
Raghu N
Hello all,
Good day to you.
I came across a piping system wherein minimum distance is not followed on downstream of isolation valve on start-up steam line. Please go through the schematic for reference.
During normal operation, Isolation valve on start-up steam line will be kept closed and it...
Hi everyone,
Good day to you.
I come across the following scenario.
Service: Refinery fuel gas
As per P&ID, flow orifice (NOT for flow measurement purpose) is specified on downstream of block valve on down stream of anti-surge control valve.
But it is actually installed adjacent to (flange...
I came across a flare header design where check valve is installed on one sub header (size 20 inch).
Is it common to have check valves on flare sub headers? can someone throw more light on this?
Thank you
Raghu N
Dear All,
I have one question.
What determines the flare stack height?
Is this only to burn flare gasses at safe height or any other factors effect the height of the flare stack?
Thanks in advance.
I come across a revamp design of chiller system in which 2 of 3 screw compressors run parallely. Details of the system given below:
Original design: 2 compressors (1-running, 1 standby)
No of compressors in revamp design: 3 (2-running, 1 standby)
Refrigerant: Propane
No of condensers: 4 (Media...
