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Hello Peers, CSA Z662-2019 dies not clarify if stainless steel pipeline is allowed or not. I have reviewed the Scope and other clauses and I only found clause 5.3.5 regarding stainless steal material. Clause 4.3.5.4 says: "The design pressure for pipe made to a standard or specification other...

Hi Johnny, Thanks for your reply. We use jacketed type bearing housings. Are you using the cooling coil or jacketed type bearing housings? We are experiencing bearing high temperature. I am suspecting to jacketed bearings instead of cooling coil. Shahab Zardynezhad

Hi Johnny, Do you have pressurized LO system for your Coker pumps? Based on the energy density calculation they do not need, however for pre lubing and post lubing it may be better to consider. Shahab Zardynezhad

Thanks Johnny, considering discharge pressure about 300barg , using packing is interesting. Our pump is 12stages, BB5 with single mechanical seal each seal 20l/min seal flush of utility water. Do you use fixed speed motor in intermittent case? Shahab Zardynezhad

Is it required to consider MAWP of the mechanical seal same as pump casing based on any applicable code or standards? Shahab Zardynezhad

What is the reliable mechanical seal plan for high pressure coke cutting pumps, BB5 Type? If we use plan 32, then approximately 10~20 lit/min is required for each mechanical seal cartridge. Any experience to use other plan such as 31? Shahab Zardynezhad

Hi Johnny, thanks for your time and sharing your experience. Shahab Zardynezhad

Hello Johnny-Who is the pump manufacture? Are you using forced oil lubrication or natural lubrication? Shahab Zardynezhad

Thanks Johnny, did you calculate how much "GO" will change to cock in the cocker? Assume each seal use 10 lit/min of GO and two pumps running, it means total 40lit.min "GO" is using and during a year (~300Days) the total volume of spent GO will be: 40 lit/min * 60min/1hr * 24hr/1day * 300days =...

Thanks Johnny for sharing the information. How many of the six pumps use plan 54 and how many of the pumps use plan 32+52? Do you use a combine plan 54 for multiple pumps? Do you have flushing wearing rings by GO? Another question is about the suction piping of those pumps. Do you use strainer...

Hello JJPellin, Thanks for sharing your experience. May I know where is you plant location and who is the Vendor for NEW seal cartridges and plan 54? How long are you using plan 54 for the pump? Any failure after modification? We have three Flowserve cocker pumps (BB2, ~ 13OOkW), originally...

Hello All, Most of the Cocker charge pumps are supplied by Arrangement-2 of API 682 seal. It means plan 23+52. The experience shows using plan 23 with Gas Oil is super expensive and plan 52 is not a suitable plan in terms of safety and reliability. Another option is to use plan 23+53B, however...

Minimum continuous stable flow (MCSF) is the lowest flow at which the pump operate without exceeding the vibration limits imposed by API 610. MCSF shall be determined by Vendor and not Purchaser, When Vendor determined 140 m3/hr why did you propose 180m3/hr!!? This will cause AOR of the pump to...

Check for separation gas. If there is not any separation gas then the oil leak to the seal and the outboard seal will be failed. Shahab Zardynezhad