Thanks for the reply.
The oil viscosity is VG32. The purge mist is in place to keep the moisture ingression away.
The bearings were opened on a couple of motors, as recommended by Electrical folks to look for
damaged bearings and low clearance. The bearings were clean and clearances were within...
We experience high Motor bearing temperatures during warmer climate (ambient unto 27 degC). These are sleeve bearing motors oil ring lubricated along with lube mist. The Alarm/Trip are 90/100 DegC and the bearing temperatures reach up to Alarm limits.The bearings were inspected on a couple of...
The pressure relief valve is not a part of the pump. It is external to the pump at the discharge line, and routed back to the oil reservoir.
It is set locally after starting the pump.
Thanks.
This is relatively new and about an year old skid.The gradual decline of pressure happens over a period of a couple of months and requires readjustment.
It runs fine and again the same phenomena happens?
The Gear pump supplies barrier fluid (Oil) to a set of pumps as a part of the plan54. The set pressure of the
gear pump is 1200 psi, and it has been found that the pump losses its pressure over a period of time ?
appreciate comments on the probable scenarios?
Great Thanks,
yes. The extra axial thrust load will be taken care of. When discussed with a pump manufacturer, they indicated that this might lead to dead-heading the seal chamber? Is it industry practice to do this type of modification?
Thanks for the reply.
The intention is to increase the seal chamber pressure. API 682 6.1.2.14 recommends to raise vapour pressure margin by "raising seal chamber pressure by removing the back wear ring and plugging impeller balance holes".
The fluid is clean and we have seal failure due to...
Is it possible to operate an Endsuction suction single stage centrifugal pump with fully enclosed impeller , with out balance holes and back wear-ring, on API seal plan 11?
