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  • Users: MattNCSU03
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  1. MattNCSU03

    Machined Flanged Pipe Spool

    I'm designing a fluids test loop in a laboratory and need to design and have fabricated a short pipe spool with flanged ends. I initially modeled something with a WN flanges and a short section of pipe but because I needed to fit in half a dozen instrument taps and a NPT branch connection...
  2. MattNCSU03

    Welding of bellmouth inside tank

    As a followup to [thread292-471719], we have existing a settling tank fabricated from pipe to B31.1 with an 18" flanged end. As discussed in the old thread, I'm designing a new exit for the settling tank and arrived at 18x6 reducing weld neck flange welded to 6" stub end to connect to the new...
  3. MattNCSU03

    Slip-On Reducing flange pass through welding

    I have a settling tank with 18" Class 150 flange on one end. I've been asked to design a 6" bell-mouth exit for the settling tank through the flange. I couldn't get it to insert inline, but I've attached a sketch of the pipe spool concept I've mocked up. The site requires that it be designed...
  4. MattNCSU03

    ASME B16.5 flanged fitting availability

    I was asked to design and procure a seamless flanged 150# class 8x6" reducer per B16.5 and B31.1 in stainless for a project. A specific taper angle was also specified. I went to see what's commercially available as a starting point and I can't seem to find anyone making seamless flanged...
  5. MattNCSU03

    Nuclear Air Compressor (Hybrid Nuclear Power)

    A colleague of mine sent this to me--the idea combines a helium reactor with a combined cycle fossil plant and claims 50% efficiency. An interesting idea, who knows if it will take off...
  6. MattNCSU03

    Rules of thumb governing makeup water to loop seal

    I am trying to determine the makeup water requirements to a large loop seal in an overflow line for condensate drain tank. To help visualize the system, I dusted off my ASCII art skills to create a P&ID: FWH | ___ TNK \ /-COND | s|_|--!-o--<-SealSupply | \-x-/ PP-->...
  7. MattNCSU03

    2002 Subaru Impreza Cold Weather Fuel Leak Fix

    If there are any 2002/2003 Subaru WRX Impreza owners on the forum, Subaru is finally taking responsibility for a cold weather fuel leak on 02/03. If your registration is up to date with Subaru, you should be receiving a letter extending warranty coverage on the fuel lines to 12 years/unlimited...
  8. MattNCSU03

    Vertical Turbine Pump Min-Flow Recirculation: On/Off or Modulating

    I am designing a pumping system that consists of 3 x 50% vertical turbine pumps designed for 12,800 gpm at 910 ft TDH. Based on preliminary data from a pump manufacturer, the minimum hydraulic flow is about 6,700 gpm. The Pump Handbook (Amazon Reader) says "Modulated bypass control is required...
  9. MattNCSU03

    CV and orifice or better CV for flashing steam?

    I am checking a calculation where about 160000lb/hr of water from a tank 120°F/60psia drains through around 100' of 6" SCH40 steel pipe and a level control valve to another tank at 1.5psia. The saturation temperature at this pressure is about 116°F so I would expect flashing. The originator...
  10. MattNCSU03

    Does anyone recognize this P&amp;ID Symbol?

    I have scoured all of the P&ID legends I could find in-house and on the net and couldn't find a match for the attached symbol. It was received from a certain French steam turbine manufacturer and is located between the condenser hotwell and condensate pump suction isolation valve. My logical...
  11. MattNCSU03

    Suppliers of &quot;Safety Related&quot; Cooling Towers

    Does anyone know of any cooling tower vendors that are capable of supplying a ASME Section III N-Stamped mechanical draft (forced or induced) cooling tower? I am aware of SPX/Marley but have not been able to locate any others. Thanks!
  12. MattNCSU03

    Using valve in place of orifice

    I have been tasked with specifying a valve to replace an orifice that the client has been unable to properly size after several calculations and attempts. The orifice is a 7/32" plug-resistant orifice in a 1" line that is a bypass around a 3" extraction steam line drain AOV to a condenser at...
  13. MattNCSU03

    Pressure effects upstream of a control valve

    I am working on 1200MWe turbine-generator (1 HP, 3 LP) set and evaluating the effects of going from full-arc to partial-arc steam admission. The unit has four control and stop valves governing steam admission to the HP. Looking at the drawing, I noticed that between SV1 and CV1 and SV4 and CV4...

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