Q & A > Question Details
What is purpose of primary and secondary seal in RGC compressor ?
05/01/2017 A: Shridhar Shenoy, OMPL, shridharbshenoy@gmail.com
Like in all rotating equipments, compressors too come with mechanical seals but this will be dry gas seals ( Non contact type). Purpose of these seals is to prevent leakage of highly hazardous gas to atmosphere. Primary seals acts as first line of barrier whereas secondary seals works as a safety line incase of failure of primary seal. Usually primary seal fluid will be operation gas (mixes with operation) and secondary seal will have nitrogen (inert gas) that goes to flare taking away any traces of leakage in primary seal. though these seals are said to be leak proof, OEM specifies allowed leakage rate usually in very few ltrs per hour.
04/01/2017 A: Prakash Pimparkar, Environmental Consulting Services , prakash.pimparkar@yahoo.in
I suppose this is to protect against sudden failure and preventive maintenance.