Recent content by CaracasEC

The seal supplier or the EPC company should provide the installation procedure. This is part of vendor document package

Hi Pumps only, The pump is a nine (9) stage vertical pump, product is ethylene, specific gravity is 0.452, viscosity is 0.07 (flashing hydrocarbon application), operating temp is -36,.3 deg C, flow rate is 66.3 m3/hr.

Hi JJPellin, Thanks for the information. I am now on close coordination between the pump manufacturer and the seal vendor.As the pump vendor wants to tap the plan 13 to the pump 1st stage suction casing could be because of the balancing piston. I'll be posting the information on the final...

Thanks flexibox...

Hi Flexibox, I'm sorry if i confused you. The scope of modification work is a total replacement of the system (seal support system + mechanical seal). Plan 52 is unpressurized seal (it is using a buffer fuid) which has a process pressure greater than the buffer fluid pressure.

Why still used two different type of gas. On the distance piece, usually purge gas is nitrogen even on the piston packing. I assume that your purge gas will be in the distance piece? How about the sweet gas? What part of the compressor you are using the buffer gas? We have 4 Boil Off Gas...

Hi Flexibox, This is API 610 vs6 pump with and original seal plan of 53C and modifying it to plan to a 13 + 72 + 76. This is process related reason, not to contaminate the process in case of higher seal wear using pressurized arrangement. I cannot find a clause on the api 610 that tapping the...

If you are working on an EPC company, they have their standard forms.

Dear Experts, We are planning to tap the Flush Out (FO) connection of the mechanical seal to the pipe upstream of the pump suction flange. Is this permitted per API 682. Thanks in advance...

Plan 32 + 61 would be a better option because of H2s..

Taken from API 610 "A bullet (.) at the beginning of the clause or subclause indicates that either a decision is required or the purchaser is required to provide further information. It is necessary that this information should be indicated on data sheets or stated in inquiry or purchase order".

Vertical storage is preferable. However if for some reason, the storage will be horizontal, it needs maintenance such as turning 2 & 1/4 turn every week to avoid permanent sagging.Mr. JJpelin has very good explanation...

Correct definition of centrifugal compressor " variable volume delivery, fixed head capacity (for a certain flow), self limiting, is flow sensitive to system resistance, is flow sensitive to gas density...."

If this is an integrally geared compressor, consider also the driver. If the driver is a steam turbine you could use the butterfly valve (higher friction loss). if you are using a motor (fixed speed), using igv is better. On the maintenance point of view, igv maintenance needs more...

Usually this special tool is supplied by the mechanical seal vendor with the instruction manual.