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Dear college Engineers, We are doing some feasibilities for a large oil tank terminal in Western Europe and I am looking for literature which indicates the drip rate for various oil viscosities in function of the roughness of the tank wall plate material and (if possible) in combination with...

Thanks guys !! I much appreciate your answers Kind regards, Chris Kind Regard, Chris

Hi guys, We have to specify some mechanical equipment (deck crane, loading arms, inside fuel tank, etc,,) for an offshore platform (no oil rig) in the North Sea. We have some DNV standards but where in heaves sake can I find the min and max temperatures at sea and wind loads at certain heights...

Hi Guys, Just being bussy specifying the flange finish for and ANSI B16.5 raised face flange for a ejector mixer. We are using graphite envelope gaskets with stainless steel insert. I can specify serrated spiral or concentric grooves in the raised face surface. Which type of grooves do I...

Hi All, I am working for a plant in belgium and we have to remove an existing 40 mtr column out of the plant in the shut down. Column is weighing bare 36850 kg and fully dressed (insulation, ladders , platforms and trays) 71350 kg. To be quick we want to lift the column out without removing...

Hi Guys, thanks for the replies !! You are probably right Timbone, these pumps just fall out of the normal range for self priming pumps. We do have them in cast iron but not stainless steel but are still inquiring other Vendors in parallel. Also these pumps must be suitable for double...

Hallo, I am working for an engineering company in Belgium and I have the following : For a certain service we required self priming pumps but could not find the proper selection, now we are thinking of a make up system with a vacuum unit (water vacuum jet). We intend to suck out the air in the...

Thanks Panduru, always feels good helping brothers in arms Kind Regard, Chris

Colin, flow and speed are related to each other by the formula of Bernouilli which sounds P = Rho*g*h + 1/2*Rho*v² Here the speed component is v²/2g if you devide all the terms by Rho*g and gives you meters H2O Success Kind Regard, Chris

Hi Lotto, I don't know what you are up to but condensing water with a cooling tower I never did. We often use it for cooling down plant water but can never be less that the wet bulb temperature. To give you some figures, we have just purchase a 56 MW concrete cooling tower with CW from 31.9 to...

Can it be done with ultrasonic vibration ?? Clean and safe Kind Regard, Chris

Checonbill, if I understand you correct, you have a cooling water system operating at 30 psi and you need 50 psi for only one piece of equipment. Therefor you ave added a secondary loop with variable speed operated booster pump over that one piece of equipment. The booster pump will give the...

Hi Jonny, EPC tends more to lump sum turn key projects as where the engineering contractor is also fully responcible for the construction of the project until mechanical completion (even this is often a point of discussion). This means that the engineering company has direct contracts with the...

Hi auto, thanks for the info, unfortunately we had to go single source. Pump manufacturer already had about 150 pumps on Client's site. Now with the upgrade they have about 300 pumps on site there. Must be a goldmine for spare parts !! Pump Manuacturer treats us (engineering contractor) as...

Hi I think job satisfaction is the best answer to this. It includes good salary, benefits, flexible working hours challanging problems, good atmosphere amongst collegues and respect for what you are doing for the company. Where I work Project Management and Procurment are the only disciplines...

For 98 % Sulpheric Acid I would suggest to use a teflon lined pump and leave API for what it is. Lower concentrations demand hastalloy or Alloy 225 alloys. Kind regards, Chris Kind Regard, Chris

OK thanks Stewbaby, you are right but I was thinking of the principle, we select our pumps on best efficiency and when they come telling me after order that efficiencies were wrong I feel myself cheated. Table 14 of API 610 indeed states that eficciency is NOT a rated value. Thanks for the...

Hi, somewhere in your contact you should include a paragraph that labourers cannot claim more than two times 4 or 8 hours per labourer when they run out of work. This helps you to limit your costs in case of idle time (possibly caused by force majeur or not enough work for that moment)...

I have a discussion with a pump manufacturer about the pump efficiencies. After order it appears that they cannot comply with their quoted efficiencies. They have "forgotten" to include the absorbed power for the double mechanical seals (varies from 0.5 to 1 kW) in their quotation. Now this is...

Hi Guys, I am working for an engineering company in Belgium (Europe) and just had a discussion with our stress engineer. Piping has located an 1800 kg pump (operation temperature of 40 ° C - design 80 °C) 2 meters from a brick wall with the 8" suction lines penetrating the wall. The wall is...