maximum vibration limit of process gas compression??
maximum vibration limit of process gas compression??
(OP)
Dear All,
i have a question regarding to our decission to install a unit of oxygen compressor.
we have 2 candidate of compressor vendor which all have design :
vertical, dry running - oil free type, comply to API 618 4th edition
its service with output pressure up to 40 BarG and shaft power 350 kW, driven by electric motor w/ speed 720 rpm.
all the specification of compressor vendor meet with our requirement.
only one the diffrence, its the vibration velocity.
The first vendor gurantee of vibration velocity 11 mm/s (RMS)
The second vendor only gurantee 17 mm/s (RMS)
the second vendor said that 17 mm/s (RMS) are acceptable for servicing the above condition.
could you passing the information regarding above??
any article to support above information??
how about the compressor live and effect to maintenance??
Best Regards,
Ng Tjan - bcu
i have a question regarding to our decission to install a unit of oxygen compressor.
we have 2 candidate of compressor vendor which all have design :
vertical, dry running - oil free type, comply to API 618 4th edition
its service with output pressure up to 40 BarG and shaft power 350 kW, driven by electric motor w/ speed 720 rpm.
all the specification of compressor vendor meet with our requirement.
only one the diffrence, its the vibration velocity.
The first vendor gurantee of vibration velocity 11 mm/s (RMS)
The second vendor only gurantee 17 mm/s (RMS)
the second vendor said that 17 mm/s (RMS) are acceptable for servicing the above condition.
could you passing the information regarding above??
any article to support above information??
how about the compressor live and effect to maintenance??
Best Regards,
Ng Tjan - bcu





RE: maximum vibration limit of process gas compression??
-The future's so bright I gotta wear shades!
RE: maximum vibration limit of process gas compression??
BigInch
-born in the trenches.
http://virtualpipeline.spaces.msn.com
RE: maximum vibration limit of process gas compression??
RE: maximum vibration limit of process gas compression??
good luck and have fun!
-pmover
RE: maximum vibration limit of process gas compression??
BigInch
-born in the trenches.
http://virtualpipeline.spaces.msn.com
RE: maximum vibration limit of process gas compression??
-The future's so bright I gotta wear shades!
RE: maximum vibration limit of process gas compression??
BigInch
-born in the trenches.
http://virtualpipeline.spaces.msn.com
RE: maximum vibration limit of process gas compression??
RE: maximum vibration limit of process gas compression??
sorry for given uncomplete data.
the first vendor guarantee a maximum effective vibration velocity of 11 mm/s (rms) measured at the cylinder edge with requirement : highly adjusted, rigid foundation with rigidly fixed pipes.
the effective vibration velocity of the foundation inferior to 1.5 mm/s (rms)
the second vendor only guarantee the effective vibration velocity of 17 mm/s (rms) mesured on the cylinder edge. they do not stated the effective viobration velocity of the foundation.
so, kindly give me the advice regarding of above two option.
do you all have ISO 10816 - 6 publication??
BR,
Ng Tjan - bcu
RE: maximum vibration limit of process gas compression??
Keep in mind that you can't believe what the vendor (any vendor) tells you. A system like this is dependant upon many variables that the vendor has no control of. If you need an extremely reliable machine, you should have independant vibration and pulsation studies done that take into account many of these variables, like the piping, the skid, your specific operating conditions, etc. Or request a reference from the vendor, for the quoted machine, in the same service, and get the details of the installation.