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  • Users: kmg1983
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  1. kmg1983

    Proximity probe vibration in relation to magnetism?

    Please excuse me if I present this information in an unfamiliar manner, as I am very unfamiliar with Electric Motors and Magnetism. We have been experiencing times of high vibrations being read by proximity probes installed within a 3600 RPM, 3500 HP, Electic Motor. However, taking readings at...
  2. kmg1983

    Mechanical Seal face material and barrier fluid

    Will Mobil 1 Synthetic based barrier fluids attack mechanical seals with Carbon vs. Tungsten Carbide faces?
  3. kmg1983

    Radio Communication interferring with Vibration Transmitters

    Has anyone experienced interference between hand held radios and vibration transmitters installed on rotating equipment? At our facility, the vibration transmitters installed on several compressors inadvertently go into a state of alarm when exposed to a near radio signal. This causes...
  4. kmg1983

    Pilot operated PSV

    Hey guys...For Crude oil application, we have a pilot operated pressure relief valve, set pressure of 235 psi, which has recently been "leaking by" with only 14-15 psi on the line. What are possible causes of this? There is a filter screen installed in the pilot sense line which may be plugged...
  5. kmg1983

    PSV leaking by?

    Hey guys...For Crude oil application, we have a pilot operated pressure relief valve, set pressure of 235 psi, which has recently been "leaking by" with only 14-15 psi on the line. What are possible causes of this? There is a filter screen installed in the pilot sense line which may be plugged...
  6. kmg1983

    Galvanic Corrosion potential on roof hatch of Crude Oil Tank...

    Currently the Crude Oil Storage Tanks at our facility have roof hatches that allow for inspection of the internal floating roofs. The hatch lid is made of Carbon Steel (not sure which type), however, it is very heavy for operators to lift regularly when inspecting the internal floating roof...
  7. kmg1983

    bio-based hydraulic fluid versus petro-based?

    Does anyone have experience with biodegradable hydraulic fluids and how they compare to typical petroleum based fluid when used in heavy machinery? How does their performance characteristics compare?
  8. kmg1983

    motor bearing high temperature?

    I'm having trouble diagnosing what may be causing the top motor bearing on a 5-stage vertical, centrifugal pump to shutdown on high temperature alarm. The motor was sent off for inspection. The following was returned on the inspection report: Prior to disassembly, a no load run test was done...
  9. kmg1983

    aluminum vs. steel plate in corrosive atmosphere?

    Currently we have 3 large crude oil storage tanks with internal floating roofs, each has a 3' x 3' inspection hatch on the outer roof in order to look for excess oil which may have escaped and is sitting on the floating roof. The hatch itself is carbon steel which is extremely heavy. Would...
  10. kmg1983

    Increase flow and pressure??

    How can you increase flow and discharge pressure on a multi-stage vertical pump while holding the suction pressure constant? We have this exact scenario happening and the flow is measured downstream of the check valve and the pressure is measure upstream of the check valve? Any input is...
  11. kmg1983

    possible vibration causes based on spectra?

    Hello all... Currently we have a single stage, horizontal centrifugal pump which pumps brine...it runs at about 1190 rpm. I gathered vibration data on the outboard pump because the pump kept shutting down on high vibration. The resulting spectra in the horizontal, vertical, and axial...
  12. kmg1983

    ASTM A234 WPBN?

    What does the "WPBN" represent? I have a fitting with...A/SA234 WPBN W8297 GT...stamped on it? Can anyone describe what all that represents?
  13. kmg1983

    ASTM / ASME A234 Maximum Allowable Operating Pressure?

    What is the maximum allowable operating pressure for a fitting (2" x 3/4" Sch. 80 WPBN reducer) meeting A234 specifications? Will it be rated for at least 2000psi?
  14. kmg1983

    allowable pressure rating for a 2" x 3/4" reducer?

    Let me first explain the scenario... Currently, we do Cavern Integrity Tests on underground oil storage caverns periodically. When doing so, nitrogen is purged from the wellhead into a frac tank. Connected to the wellhead is a 2" x 3/4" reducing fitting with internal threads which is...
  15. kmg1983

    Allowable pressure rating for 2" x 3/4" reducing fitting?

    Let me first explain the scenario... Currently, we do Cavern Integrity Tests on underground oil storage caverns periodically. When doing so, nitrogen is purged from the wellhead into a frac tank. Connected to the wellhead is a 2" x 3/4" reducing fitting with internal threads which is...
  16. kmg1983

    Corrosion / Errosion within Seal Flush Pump?

    Hello everyone! I'm a young, relatively new engineer and have encountered a problem with one of our seal flush pumps. It is a single stage, horizontal centrifugal pump operating @ 285 gpm and 185 psi. It receives suction off of a potable water tank and is used to flush the mechanical seals of...

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