I've got manufacturer pump curve. I'd like to know how to determine min/normal/max flow rate from the pump curve. It is a Centrifugal pump, BEP is given at 150 GPM. If we say 150 GPM is the capacity of the pump, what would be the min and normal flow rate (to produce pump data sheet)? Thanks for...
Heat transfer fluid in preheaters @ 600 F boil water to 1500# steam. The Psv at the outlet of HTF has been sized based on tube rupture in steam site. During tube rupture all control valves will be closed. Steam Gen will be isolated in 30 seconds. The question is how to calculate the time which...
I am currently working on a design of storage vessel pressurized with nitrogen. My team decided to send the vent Line to liquid line at the discharge of pump. I have never seen vent line connected to liquid line. I appreciate if anyone can explain if this is a good or bad design.
Per API 14E there are some criteria for selecting and sizing pipe lines. For centrifugal pipes it is recommended the velocity at the suction should be 2-3 ft/s and discharge 6-9 ft/s.
I need to know what is the logic behind this? What would happen if velocity is less or more than the recommended...
In PSV calculation for fire case we may take credit for the insulation only if the insulation meets the fire proof definition per PI 521. Often equipment insulation are intended for weather insulation and not fire. If I want to take credit, I need to confirm that the insulation meets the fire...
According to API 521 Addendum May 2008 we may take credit for the insulation only if the insulation meets the fire proof definition. Often equipment insulation are intended for weather insulation and not fire. If we want to take credit, we need to confirm that the insulation meets the fire proof...
I am trying to size an overflow pipe line for Atmospheric tank. I know I can not size it based on inlet flowrate.
I need a good explanation why overflow pipes can not be sized based on inlet flowrate. The overflow discharges to ground. Some one was arguing to use the vent as an overflow to...
There is a level control valve at the outlet of a reboiler and the boiler has blanket gas. Because of constant opening of the level control blanket gas is inadequate. What would be the recommendation to fix the control valve? I don't understand what the cause would be?
The problem is gas passes through a horizontal knockout then passes through a gas flow meter. Some of the gas condensates and liquid gets into the compressor. I am planning to place a condensate trap to minimize the pressure drop. The operator plans to replace the gas flow meter. Right now is...
This is a problem with heat exhanger unit. It is a multi tube type heat exchanger. I was told by the operator when he opens the bypass valve the pump feeding discharge to the heat exchanger drops 20#. There are two bag filters upstream of the heat exchanger. First I thought filters might need to...
