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  • Users: coachk
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  1. coachk

    Chemcial Costs

    Anyone know where I might be able to find current prices for various chemcials used in BWRO potable water and sanitary wastewater reuse (for irrigation) treatment plants. Assuming size of facilities are 0.5 - 1.0 MGD. Chemicals required and approx rates could be: Ferric Chloride Sulphuric...
  2. coachk

    Potable Water Chlorination

    I am looking at possible disinfection systems for a 1 MGD potable water treatment facility for a resort. Would a hypochlorite dosing system be considered `typical' for this type/size facility?
  3. coachk

    Puerto Rico Soil Resistivity

    Anyone know of typical values of soil resistivity for the southern coast of Puerto Rico? Thanks!
  4. coachk

    API 5L Grade X42 Pipe Bending

    Hi! For installation of a 24-inch SCH 40 API 5L Grade X42 fuel oil pipeline, anyone know what the maximum degree of bending that can be field accomplished without damaging the piping? Thanks for your help!
  5. coachk

    API 13 Fuel Oil Viscosity vs Temperature

    Help!! I have spent a lot of time searching for information regarding the viscosity of API 13 fuel oil at various temperatures. I have searched through various links given in answers to numerous threads, but keep coming up empty-handed. Thanks for your help!
  6. coachk

    Protective coating for RO skid frame

    Hi! I have been told that epoxy powder coating is a good protective coating for a seawater reverse osmosis skid frame made of either aluminum or welded carbon steel? If that is correct, how is it applied (electrostatic, baked, etc.); or is there another coating which will provide better...
  7. coachk

    Oil pipeline

    I have been asked to perform an independent (out of discipline) review of the design of pipeline(s) used for the onshore transport of #6 and #2 oil. Although there will be experienced engineers responsible for the detailed review, and my review is intended to be more of an engineering...
  8. coachk

    Rubber lining multi-media pressure filters

    Anyone have experience with rubber lining multi-media pressure filters? In particular, thickness of the lining. The filters are to be used as pretreatment for an RO plant, and can receive water from 2 different sources: potable water with high SDIs, and seawater from wells.
  9. coachk

    caisson cost

    Anyone know of typical construction cost ($/ft) for 24" dia caisson x 60' long with 8-#8 bars and #4 ties @4" O.C.?
  10. coachk

    `Rule of Thumb' Pipe Velocities

    Howdy All, For water flow in pipe, anyone know of a source for `rule of thumb' (typical) maximum acceptable velocities in different kinds of pipe? Thanks!
  11. coachk

    `Air Operated Diaphragm Pumps

    Hi all, I am pumping a mixture of oil and water, and sometimes dirt out of a sump and into a tank (from the tank it will be gravity fed through an oil/water separation process. I have been told that the best pump would be an air operated diaphragm pump, as it will not emulsify the oil. I need...
  12. coachk

    Pipe Support Span

    Anyone know of a good source for maximum spans between supports for various schedules of stainless alloy piping?

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