Recent content by MECE02

There are some relief valves that could be leaking by into the relief flare header. We are aware of visual observations of valve leakage for propane/propylene such as ice balls around the valves. Are there any suggestions for devices to measure severity of the leak? Previously used device...

I would love to hear what the best training course you have taken is and why. Thanks! MECE02

A recent safety review was performed. Here is the scenario: 1000 gallon plastic tank containing amine Positive displacement pump If the vent were closed and the positive displacement pump (small pump, maybe a few gallons per hour)is running could it pull enough vacuum to damage the tank? I...

Latexman, thanks for your help. I will call the vendor. However, for my piece of mind can someone help me determine what the flow rate is? This has now become a challenge to me, not just trying to get the answer. I really want to know how. I assume there are other situations where people...

Essentially I'm trying to calculate the velocity or flow rate of air in the tube. The pressure is supplied in the tubing at 80 psig and exits at 0 psig. The tubing is 15 feet in length. The inner diameter is 0.305 inches. It seems that all of the calculations I find require the velocity to...

This is air supplied to the inlet of the actuator.

I need to calculate the available flow rate of instrument air to a control valve. The tubing is 3/8" SS and the pressure is 80 psig minimum. I do not know the velocity of the air or the pressure drop in the line so I'm having a hard time applying Bernoulli's. What assumptions/method should I use?

Hi, I'm planning on taking the PE Exam for chemical and I think I came across a great preparation course on DVD but the ad is in CEP magazine and I don't have a membership. Could someone please help me by telling me what this link is or sending me a copy of the information...

Wow, that was fortunate that noone got hurt from the benzene line.

Thanks for all the responses! What is CUI? Pennpiper: The atmosphere is generally non-corrosive - it's just outside. Ash9144 : Was the pipe being used when the 50' fell out of the rack?

Has anyone else faced the challenge of getting pipe painted when noone wants to put $ in the budget? First of all - does paint really matter on process piping? Have there ever been any catastrophic incidents caused by corrosion due to a lack of painting/surface protection of the pipe? I...

I'm going to take the CE PE exam in october. Which home study books/courses have you been satisfied or dissatisfied with? Thanks!

So if I go with Dalton's law approach: Ptotal = PN2 +PH20 Given: PvapH20 @ 383K = 143.0 kPa Pdryer = Ptotal = 2psi= 114.7 kPa Calculated: PN2 = Ptotal - PH2O = 28.2 kPa yN2 = 0.246 yH2O = 0.753 QH2O = 1768.75 mol N/min. / yN2 = 7181 mol/min H2O I don't think that is a reasonable...

Hi 25362! Dryer N2 in = 383K Dryer N2 + water vapor out = 165 F = 347K (type-o above, not 155 F) Therefore, the N2 is actually cooled from 383K to 347K. Particulate + water (which are the heat sinks) entering dryer must be less than 347K. I am not sure of its value though. Thanks!

Sorry for any confusion. This is certainly not a school homework problem. I was trying to over simplify this plant scenario. At first I thought the water was near the boiling point, however, it isn't. To further clarify: Unreactive solids are added in the top of a steamer vessel. Steam is...