API 617 Standard
API 617 Standard
(OP)
Hi All,
I'm looking for a clause on the code specifying that the lube oil stand-by pump shall be automatically started. Hoping for your helps...Thanks a lot...
I'm looking for a clause on the code specifying that the lube oil stand-by pump shall be automatically started. Hoping for your helps...Thanks a lot...





RE: API 617 Standard
I think the relevant clause is 4.2.15 in API 614 5th Edition which as I understand it, simply says that the vendor and purchaser have to agree what protection is required in the event of failure of the primary pump. If I interpret that correctly then this means that there is no such clause as you are looking for!!
Of cpourse, I've been wrong before
RE: API 617 Standard
seen this on several compressor stations that keep oil psi and warm and circulate coolant so that when units are started remotely there is minimal warmup before being put on line.
RE: API 617 Standard
RE: API 617 Standard
Automatic Start-up of steam turbine driven lube oil pump
The whole purpose and function of the standby or back up LOP is to ensure the LO supply is not interrupted in the event of the main LOP failure. If it is not auto-started as soon as the LO pressure drop to the preset level, how fast do you think the operator can start it manually on the trigger of an low pressure alarm?
Auto starting of the main LOP, if applied is usually tie in to the permissive starting sequence of the main equipment.
RE: API 617 Standard
RE: API 617 Standard
Use your logical thinking as an engineer. If the main pump also require to auto-start,what logic should be used to trigger the auto start?
You start the main L/O pump first to build up the oil pressure before you start up the compressor or turbine.Once started it will be kept running until manually stopped or tripped due to mechanical or power supply failure.
The stand-by L/O pump is usually powered by a different power source from the main pump.
If you have a turbine driven unit,it is always use as the main pump due to more complicate starting procedure than electric motor driven unit.
RE: API 617 Standard