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  • Users: KernOily
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  1. KernOily

    Does AWWA C200 Dimensionally Comply with B36.10?

    Hi guys. I should know the answer to this, but... Do you know if AWWA C200 pipe is dimensionally the same as ASME B36.10 pipe? As best I can tell, C200 does not explicitly say. C200 incorporates API 5L by reference, but it does not say that dimensions shall comply with 5L, unless I have...
  2. KernOily

    PD Blowers in Series?

    Hi guys. Not sure this is the right forum, so please recommend an alternate if I need to move this post. I have two PD lobe blowers (Gardner-Denver GGB type, 15 hp each) that my client is proposing to put in series to meet a ~30 psig discharge pressure requirement. These are surplus equipment...
  3. KernOily

    Replacement Coating for Gas Turbine Clean Room

    Hi guys. Wondering what product you all are using for replacement coating for a gas turbine clean room (the space between the inlet air filtration and the turbine air inlet). This is for replacement of the existing damaged/worn out coating. This would be applied in situ. Thanks! Pete
  4. KernOily

    Pulsation Dampeners on Recip Pumps: Bladder Type vs. No Bladder

    Hi guys. Looking for experience on pulsation dampeners in reciprocating pump service, on suction and discharge. Interested in what your experience has been in regard to which type of dampener is more effective in general at reducing pulsation in the suction and discharge piping. I'm...
  5. KernOily

    Is the Pilot on a Pilot-Operated PSV Supposed to Leak?

    Morning guys. Question: Is the pilot on a pilot-operated PSV supposed to leak during normal operation of the process? Is the pilot supposed to vent if the system/process pressure is fluctuating? I would think so, to maintain the correct actuating pressure on the dome, yes? Thanks guys! Pete
  6. KernOily

    PWHT of S&T HX Shell-to-Tubesheet Flange

    Hi guys. S&T exchanger, type BEM, in shop to repair the flange face on the shell flange (shell-to-tubesheet) for corrosion damage. Shell: SA106B shell 24" sch 100 pipe x 324" long, 1.531" wall Shell flange: SA105 shell flange 24" class 900. The flange face is being repaired by weld overlay...
  7. KernOily

    What Pump for Diesel Fueling?

    Hi guys. What's a typical pump used for diesel fueling of heavy equipment? Design rates are 200-300 gpm. Pumps will be installed at grade and will take suction from an above-ground storage tank. I know I can just use a regular centrifugal or PD pump but I figure there's probably a preferred...
  8. KernOily

    Nitrogen Truck P and T?

    Anybody got the P and T inside a bulk nitrogen truck? I can't find it anywhere. Also a link to a phase diagram in USCS units would be very helpful; I'm only finding them in SI units. Thanks guys! Pete
  9. KernOily

    Small Ball Valves to API 6D?

    Hi guys. Looking for a 3/4" carbon steel standard-port thread or SW ball valve that is good to API 6D. I have searched catalogs and none of the ones I've seen say whether they are compliant. Flanged valves yes, but not small NPT/SW valves. API 6D does not have any size requirements or...
  10. KernOily

    What P-Group is API 5L X90/100/120?

    Hi guys. Anybody know what P-group/P-Number for AP 5L X90/X100/X120? I can't find it anywhere. Thank you! Pete
  11. KernOily

    B31.X Code Implications of "Roping"

    Hi guys. Just wondering if any of you know what the B31 Code (31.4 in this case) implications are for roping a pipeline cross-country. This is the practice of laying the line down, either on grade or on supports, and forcing it to bend into very large radius bends to conform to the local...
  12. KernOily

    Pipe Length Required to Change 2Ø Flow Regimes?

    Hi guys. Has anyone seen any rules of thumb for the length of pipe required to change a two-phase flow regime from, say, annular to stratified? My simulator only tells me what the regime is at any point along the line and can't do the transition. The correlations don't really handle the...
  13. KernOily

    Stiffness of Air-Cooled HEX Nozzles?

    Hi guys. Trying to sharpen my pencil on a piping stress model involving an air-cooled heat exchanger. Looking for reasonable flexibilities/stiffnesses for use in modeling the header box nozzles. I know an air-cooled HEX is pretty flimsy structurally so I believe the use of a nozzle stiffness...
  14. KernOily

    API 650 Allowable Overpressure?

    Hi guys. Could someone please point me to the section in API 650 that establishes the allowable overpressure beyond the tank MAWP, for example during venting? A search of posts here turns up "For API 650 tanks, overpressure must not exceed MAWP of the tank. That means the set point should be...
  15. KernOily

    Separator Inlet Device for Dirty Service

    Hi guys. Pretty new to 2Ø separators; looked at some old threads, read pertinent chapters from Campbell/GPSA/Arnold, still got questions. Need an inlet device for a gas-liquid separator at the outlet of a fin-fan. Vapor mass fraction is about 32%; gas phase rate is 2.5 MMscfd. Service is...
  16. KernOily

    Gas-Liquid Separator Internals for Dirty Service: Mesh vs. Vane

    Hi guys. Any of you have experience with separator internals for dirty gas service? Have run mesh-type and they keep plugging up with iron sulfide and other detritus that comes in with/plates out from the gas. Looking to see if anybody knows if a vane-type mist eliminator would also suffer...
  17. KernOily

    Fire Sizing for Air-Cooled Heat Exchanger Tube Bundle?

    Hi guys. Question has come up as to how to fire-size for an air-cooled heat exchanger tube bundle. My initial thought is I would use the bare tube surface area as the wetted area in the 520/521 calculation, then add the area of the two header boxes. That total area would be used in the calc...
  18. KernOily

    Anybody Got Curves for Allis-Chalmers Tpe 731+ ?

    Hi guys. Anybody have pump curves for the Allis-Chalmers type 731+ ANSI B73.1 pumps that they could scan in and make available? Did a search and somebody did just that 6 years ago, but the link is long dead. Thanks guys! Pete
  19. KernOily

    Foam in Suction Scrubber

    Hi guys. Any of you ever experienced foam in a suction scrubber? Client has a tank vapor recovery system, ~0 psig suction, 190 F suction temp, 20 psig discharge, constant-speed rotary vane compressor, 150 hp, capacity control is by discharge bypass recycle. Gas is (on dry basis) ~65% CO2...
  20. KernOily

    Air-Cooled Heat Exchanger - Header Box Vacuum Rating?

    Hi guys. Any of you ever seen a calculation for an air-cooled heat exchanger header box to rate it for full vacuum?

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