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  1. curve3104

    API vs. ANSI pumps

    The client did request ANSI, therefore it is our job to confirm that will be acceptable (which we have, and it is).
  2. curve3104

    API vs. ANSI pumps

    I agree with the safety aspect. It is traditional that refinerty operations use API pumps just because of that reason. However, a fueling terminal is not at high risk for fires. In most cases, the pump suction can be (and is most likely part of the operation) isolated by an automated control...
  3. curve3104

    pipe tracing and insulation

    Anyone know of a good calculator for estimating electric tracing loads and insulation combinations in piping?
  4. curve3104

    latent heat values

    Thanks Juan, can you answer a question about the spreadsheet...what kind of crazy unit is the density and conductivity given in? Also, I do not see the latent heat values for phase changes... Looks like a good sheet thought...are you familiar with how it works? Can you add fluids knowing the...
  5. curve3104

    latent heat values

    Anyone know where a good source online would be for latent heat values of various materials, namely oils? Thanks
  6. curve3104

    API vs. ANSI pumps

    Being an engineer myself, I like to CMyA sometimes. But, in this case, I think it's a little extreme. I am hoping to get some opinions from others to confirm that, or learn something that will change my mind. I don't want our client paying 3-4 times the cost unless it is going to benefit...
  7. curve3104

    API vs. ANSI pumps

    I'm sure this has been addressed previously, but wanted to know if anyone could help me out quickly.... I'm working on a project for a gasoline/fuel oil terminal, where fuel is delivered to tanks via a pipeline and pumped from the tanks to tanker trucks for delivery. We are adding new tanks...
  8. curve3104

    tank heating coil

    Pleckner, You have touch on just what I am looking for. Montemayor, your suggestion is exactly what I have seen in the past also, and look to do with this app. However, I have quite a distance from my three sources of steam (HP, IP, & LP) The LP steam will never make it, only 15 psia. IP...
  9. curve3104

    tank heating coil

    Does anyone have experience with heating fuel oil in bulk storage tanks? I have an application where steam coils are used to heat fuel oils (#2 to #6), so they do not gel at low temperatures. I need to calculate the maximum steam temperature to which I can deliver to the heating coils such that...
  10. curve3104

    petrodiesel/biodiesel transportation in cold climates

    Yes, I have an idea of temperatures to be maintained...question is the method. Need some details on how the tanker cars are heated.
  11. curve3104

    petrodiesel/biodiesel transportation in cold climates

    I did the same search, brought up the same hits...none have specs on tanker cars. Fuel oil will definately gel in northern climates, especially when we are talking near Canada. That's why they have heating coils and insulation. Just need to get a general idea of how these cars are heated...
  12. curve3104

    petrodiesel/biodiesel transportation in cold climates

    I'm looking into transporting either biodiesel or petrodiesel by truck or rail in cold climates. Is anyone aware of how these vessels are heated to prevent gelling? I would assume electric traced, but not sure. They may possibly be insulated only, but I'm not sure. Links to a website or some...
  13. curve3104

    flame radiant energy

    Ok, I'm no chemist, but I'm burning natural gas and fuel oil. Any ideas?
  14. curve3104

    flame radiant energy

    Found it. Relation between intensity and distance is the inverse of the distance squared. Any clues for the emisivity factor for a flame? Would it depend on the fuel? Thanks.
  15. curve3104

    flame radiant energy

    I am trying to determine the quantity of thermal radiation from a flame. Also, more importantly, I'm trying to determine the radiant load as a function of distance from an object (i.e. don't want to burn up something near the flame). Does anyone know the relationship between thermal radiation...
  16. curve3104

    Heavy oil AST heating

    Good point, but probably would have more than 1 unit to service the tank anyway. Don't think I could get away with only one since that is a LOT of oil to heat. With internal coils, many tank penetrations are required (depending on the # of coils required, maybye 20-30), so I'm trying to...
  17. curve3104

    Heavy oil AST heating

    I have a question regarding heavy oil tank heating. I am looking into ways to keep oil products stored in large AST's (200M barrel or so) warm in cool climates. I have seen internal steam coils, but are there other ways to do it? External plate heat exchanger skid with pump recirculation...
  18. curve3104

    Liquid Expansion

    Latexman, Basically what you are saying is if you have a long transfer line where liquid can be blocked in, and is exposed to ambient/solar heat input, provide anywhere from a 1/2" to 1" TRV at the desired set pressure and you are good to go? I assume since no calculations are required, this is...
  19. curve3104

    Pump discharge PSV/TSV specifications

    Thanks MJC. I agree with you 100%. Not only is there a SRV on the discharge header in my case, we have a small recirc line to divert flow when we run up the curve. The issue here is thermal fluid expansion. Long pipe runs that can be isolated need to be relieved. With most fluids, the...
  20. curve3104

    Pump discharge PSV/TSV specifications

    I have noticed relief valves in refining plants (not sure exactly which type of relief device) installed on piping from process units to storage tank farms, and on the discharge side of product pump stations, sending product to truck/barge loading, etc. Are these pressure relief valves, or...

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