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  1. todcaesar

    Torque Value for Graphite Press Seal

    Hello, I am replacing the gold plated pressure seal gasket on a 20" inch stop check valve(Rockwell Edwards 4007 model)with a graphite seal. The pressure seal bonnet and graphite seal ring are pulled up tight with the 1" bonnet retainer studs. Will the torque values on the retainer nuts be...
  2. todcaesar

    Bearing Cap Oil Leak

    Brad, we will sometimes(usually not) use permatex, but not as a rule. BobM3, Maint. reports that during the retorquing there is some movement noted. I think there is some loosening of the bolts goin on here. I am not sure how to explain the temporary nature of the fix. It seems that since...
  3. todcaesar

    Bearing Cap Oil Leak

    This plant is a PWR which means the secondary is a non-rad area. The bearings are split sleeve bearings. Any other info that you need? Thanks, Tod
  4. todcaesar

    Bearing Cap Oil Leak

    I have a nuisance oil leak that is getting a lot of attention from management since it has been deemed a safety issue. The oil is mostly coming up the four bolt holes on the bearing cap. We usually go out and retorque while online (nuclear power plant) and then replace the gasket during...
  5. todcaesar

    Clear/Greenish "snot" in Feedwater Pump Oil Cooler

    Front page of attachmenthttp://files.engineering.com/getfile.aspx?folder=41998187-5757-4f56-bdbe-2e3ea2535c69&file=Turbinol_Select_32a.PDF
  6. todcaesar

    Clear/Greenish "snot" in Feedwater Pump Oil Cooler

    Chemistry initially they said not a bacterial issue, but they did not specifically test for it. We have one swab left, How can we test for it? They used to have a kit that turned pink, but they expired. Would a microscope show anything? I have heard of oil additives clashing but there has not...
  7. todcaesar

    Clear/Greenish "snot" in Feedwater Pump Oil Cooler

    Sorry for the graphic description but that really is what it looks like. The lube oil cooler for our Feedwater turbine/pump became fouled(as made evident by the higher temp and lower delta temp). We pulled the tube bundle out and found a clear and greenish slime on the tube fins. Chemisrty...
  8. todcaesar

    Leaking Rockwell-Edward's Hermavalve

    I think they are refering to the leakage through the hermatically sealed diaphram rather than the seat leakage we are experiencing.
  9. todcaesar

    Leaking Rockwell-Edward's Hermavalve

    I am having a leaking problem with the following valve: Rockwell-Edwards Hermavalve 3/4" Model 15104T Class 2 I have two of these valves in series for isolation. A globe valve for isolation would not have been my first choice; but, that is what I am stuck with. The valves began leaking soon...
  10. todcaesar

    Turbine Balancing- Mechanical and Electrical Lag

    Hey SMS, We have used Bentley Nevada in the past with proximity probes. The phase reference is not permanently installed. We are looking at a Maars system and considering using accelerometers. Balancing is probably secondary in importance(we may just bring Bentley Nevada in for balance shots)...
  11. todcaesar

    Turbine Balancing- Mechanical and Electrical Lag

    We have a turbine for which we have, in the past, brought in an outside vibration firm to collect data during startup (phase angle and magnitude) to be used in the future for a balance shot. We would like to do this ourselves with equipment from another supplier. My question is, how do we...
  12. todcaesar

    Old Wavy Glass Panes- Reproducible?

    Are the old glass panes wavy because of flow downwards over time or were they made that way originally? Could this be replicated by heating a new pane of glass? Thanks, Tod
  13. todcaesar

    Change in Spring Properties over 40 Fdegs

    I have a relief valve (10psi,3/4 in, used for lube oil) that has been giving us problems. I am certain the problem is caused by the change in viscosity of the oil over the ranges of 60-100 deg F. However, a number of people I work with believe the spring(steel)stiffness is changing. I am sure...
  14. todcaesar

    Is Window Pane Glass really Glass?

    I wanted to reproduce the wavy glass in my parents old house with a similar pane(and yes it is because I broke it). Can this be done by heating the glass in an oven? I have heard that newer glass panes are different. Is this true? tod
  15. todcaesar

    Why is 110V safer than 220V?

    With the isolation transformer you can touch the energized wire with one hand and a ground with the other and not be electrocuted because the ground is not in the loop with the isolated circuit. However, if you touch one one the conductors of the isolated circuit with one hand and the other wire...

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