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  1. quadtracker

    Kingsbury Thrust bearing Pads damage!

    I agree, most likely if it has a balance pipe it probably plugged off, which caused a heavy axial load on the thrust bearing from the extreme hydraulic pump forces in one direction. Some balance pipes have a restricting orifice or adjustable globe or needle valve to control flow rate. Petroleum...
  2. quadtracker

    Devcon epoxy repair on case ring bores and case cut water.

    Normally the metal areas in the pump casing are built up by an approved welding process from the manufacturer, then those areas are machined back to original manufacturer's specs and the cutwaters are hand ground to approved form. There are pump repair companies that can and do a professional job.
  3. quadtracker

    Is pressure thrust accounted for in API 610 with use of unrestrained joint

    Pipe expansion bends and or spring loaded pipe hangers or supports will generally accomodate thermal growth which might help with your concerns.
  4. quadtracker

    FORGING DIES HANDBOOK

    There is a book called Foundry Technology, written by Peter Beeley, published by Butterworth - Heinemann you may find useful.
  5. quadtracker

    Extracting bundle of floating head heat exchanger

    In the future I would suggest install a spare heat exchanger and clean the other units more often. With the spare unit you can rotate the other units for cleaning. The other possibility is to replace shell and tube exchangers with plate exchangers that can be dismantled easier for cleaning...
  6. quadtracker

    issues on continuos process plant operated intermitently

    I would consider producing enough extra finished product and off spec product into a rerun tank that could be used to recirculate, to blend with new feed stock so that a more continuous operation could be made. Increase your operation cycle and decrease your downtime. This might reduce the...
  7. quadtracker

    Screw pump bearing failure

    It may be false brinelling caused by vibration caused by equipment nearby sending vibration across the floor to a poorly supported pump foundation. This vibration passes to the pump and when it is shut down and others are running the bottom half of bearing gets brinelled from the weight of the...
  8. quadtracker

    SKF-7309 BECBM making noise in horizontal BB3 boiler feed pump

    Etching is a condition where bearing parts are subject to corrosion by moisture by the direct intrusion of water from outside. When used in high-temperature humid environments, bearings should be protected from these effects. a boiler feedwater pump may leak flashed steam from the pump seal...
  9. quadtracker

    Reason for shaft breaking prematurely on 9 stage MSN type Flowserve pump at throttle sleeve?

    Is it possible that a shock load created by water hammer from a discharge line check valve suddenly slammed shut during a second pump switch. These pumps create very high pressure and volumes at 3560 rpm. The internal rotor clearances are usually very small to produce high hydraulic pump...
  10. quadtracker

    Recip Pump - Falling Discharge Pressure with Increasing Suction Pressure

    I would check condition of both suction and discharge valves in the fluid end of the reciprocating pumps. Also replace leaking recycle valve. Get your pump efficiency back to normal. Replace packing in the stuffing box if necessary.
  11. quadtracker

    Case leak and stud failure on multi stage split case pump BB3

    I would check the flatness of the casing halves looks like the fluid has washed out the gasket area. Improper torque sequence and value could be a factor. Improper gasket material. Gaskets must be hand fitted and cut at the very edges of the casing otherwise high pressure fluid will erode the...
  12. quadtracker

    Information about Spline standards

    In the machinery's handbook by Eric Oberg, Franklin D. Jones and others there is a large section on splines this may help you.
  13. quadtracker

    Shim size requirement

    I have used them on big gas drive engines on recip compressors packages no issues these engines weigh over 15000 lbs over 1400 hp. The bottom of the vibracon can be machined to adjust height plus using the threads for adjustment.
  14. quadtracker

    Causes of Cylinder Vibration in Vertical Reciprocating Labyrinth Piston Compressor

    I would check for rod runout problem caused by crosshead guides worn, cylinder - oval Inside diameter, piston wear, improper piston clearances to cylinder for 2nd stage problem. For 1st stage problem I would check discharge valves and second stage suction valve condition. Possible improper valve...
  15. quadtracker

    Shim size requirement

    Many manufacturers that assemble compressor and pump skid packages are using SKF vibracon - adjustable chocks, rather than shims under the motor or engine foot. They support angular soft foot much better than stacking shims. check out SKF Vibracon on google to get full understanding.
  16. quadtracker

    Tandem Compressors

    I am only familiar with one Tandem centrifugal compressor package which included 3 separate centrifugal compressor casings driven by one Gas Turbine. The first low pressure stage (LP) compressor was directly driven from the gas turbine. The second intermediate pressure stage (IP) was driven by a...
  17. quadtracker

    Thrust/End play/float calculations for centrifugal pumps?

    Your correct the gap end play is based on the temperature of the fluid allowing for shaft expansion and too little gap will put too much load on the thrust bearing may cause it to over heat and lose lubrication on the rolling elements (anti-friction type) or score pad faces on kingsbury thrust...
  18. quadtracker

    Pipeline Back pressure issue

    It looks like you have lost about 80% of your production and if your pumps are in good condition your in trouble with your pipeline you could lose your pipeline. Your first pig should have a locator tag so that you can find it if it gets stuck in the line. If that happens you will likely need to...
  19. quadtracker

    Pipeline Back pressure issue

    More frequent pipeline pigging might help keep the lines clear of wax and solids (sand or asphaltenes). There could be build up in low lying areas such as valleys. Perhaps batching some chemical in front of the scraper pig to help to clear the line. There must be a chemical company that has that...
  20. quadtracker

    SURGE VESSEL MAINTENANCE

    not sure what kind of surge vessel your talking about but there is a Book- Applied Process design for chemical and Petrochemical plants has info on surge drums (pulsation dampener bottles for reciprocating compressors) Volume #3

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