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  1. GrimesFrank

    2 Speed 2 Wind Motor Won't Cold Start After 9 Months in Full Operation

    Could use some 3rd Party Expertise please. New motor replacement for 30yr application (Circ Pump LP/HP); 60 Hz, 575V, 13.3/40 HP, 1200/3600 RPM, 17.5/37.4 FLC, Wye Motor - In 30yr nary an electrical issue; only bearing failures. - New motors run for ~9 months then 1200 RPM won't cold start; gets...
  2. GrimesFrank

    New Cured Dry Film Lubricant for Grayloc Rings

    We have been having difficulty from our supplier concerning the anti-friction coating on our "reusable" grayloc rings. We use currently a Henkel (Acheson) Molydag formula. In the past we were getting +120 clamps per ring before coating wear caused metal adhesion and now we're as low as 40 but...
  3. GrimesFrank

    Wait Time Between Starts for 40 HP Motor

    Forgive the ignorance, this may be a simple look-up/calcultion. My operators want to run a test where they want to run every configuration of a (2) sets of 2 pumps to determine flow/dP characteristics of the system. They will do thi by of their normal 'swap duty' procedure. Each pump is...
  4. GrimesFrank

    Air Motor Centrifugal Sump Pump Vendors

    I'm trying to make an RFQ list for the subject pump and my Boolean searching seems to be coming up empty. I have so far; Ingersoll-Rand (ARO) Chicago Pneumatic Hy-Tech (ATP) I need a pump that; A) Capable of 50 - 90 ft Head B) 90 psi(max) air supply C) Max footprint of 14in dia. Any...
  5. GrimesFrank

    Pull-Thru Strength of Rivets in Al Sheet

    Pull-Thru Strength of Rivets in Al Sheet I'm looking for help on this subject I originally posted in the Fastener Forum. I'm thinking that Aeros deal with rivets and membranes enough to help me. Please prove me right ;P
  6. GrimesFrank

    Pull-Through of Fasteners in Thin Sheet

    I've gotten what seemed a simple request; What load is required to pull X size fastener through Y thick aluminum cladding? I went to ever faithful Roark and no direct cook book. The issue is 'thin' sheet, the membrane stresses are substantial so anything I can analytically calculate ignores...
  7. GrimesFrank

    Review of Design Drawing for ASME Sec III

    I just want to take a straw poll here as I've hit an odd item. When reviewing a design drawing (i.e. used in design report), what details do you look for as a minimum for acceptance? I ask because I have received a drawing that is light in details (basically a pictorial of the fitting) and when...
  8. GrimesFrank

    Sizing New Sump Pump for Existing Drainage Netwrok

    When sizing a new sump pump for a network does one size it to pump against the head of all other pumps running simultaneously regardless of their duty? The other pumps are for sumps with infrequent duty (e.g. floor drains for areas never used, emergency flood pit, etc.) If I size my pump (with...
  9. GrimesFrank

    Not Pickling an ASME CS Filter Vessel

    Sorry folks but free Fe ions, suphuric acids, oxide layers etc. aren't my forte so I have a pretty basic question. I got a vendor looking for a concession. Our spec asked for the vessel to be grit blasted and pickled......oops they didn't pickle but bead blasted only. Can we accept? Now I...
  10. GrimesFrank

    Hydraulic Valve Assembly Standards

    Entering into the brave unknown and specifying a new pressure reduction valve / custom manifold assembly. Our old tech specs here callout the use of JIC H-1 (1973) as the only technical standard. This has been replaced by NFPA T2.24.1. After searching the NFPA site my head is spinning from...
  11. GrimesFrank

    Vibratory Acceptance Limit on Centrifugal Pump Purchase

    thread384-182657 Please have a look at this thread, I thought the vibe forum might've gotten me more responses......guess not Frank "Grimey" Grimes Rule 25. of Swanson's "Unwritten Rules of Management" Have fun at what you do. It will reflect in your work. No one likes a grump except another...
  12. GrimesFrank

    Vibratory Limit Acceptance for Pump Purchase

    Purchasing a 3"x1-1/2"x11" (fluid: water)/(OP: 155 gpm @ 320ft)/(40hp @ 3450 RPM) centrifugal pump/motor ass'y. The vendor has asked me to accept a vibration limit of .28 in/s RMS at running speed. I have a hard time accepting this as our operating predictive maintenance program says to issue...
  13. GrimesFrank

    Strength of a Shortened S-Shape Monorail

    Odd situation/request but here it goes nonetheless; Currently have a S12x31.8 monorail (aprrox. 60' long / 5 cantilever supports) supporting a 5 ton chain hoist. Without getting into detail, I want to shorten the depth of the rail. I fully expect to analyze the condition but I'm trying to...
  14. GrimesFrank

    Balancing Impeller Only.....Risky?

    Purchasing a 3"x1-1/2"x11" (OP: 155 gpm @ 320ft)centrifugal pump/motor ass'y. Manufacturer wants me to accept them balancing the impeller only. I asked for the whole assembly to be balanced; shaft, rotor, bearings, etc. A) Why is that such a difficult request? Am I being overly cautious? B)...
  15. GrimesFrank

    ASME PTC 8.2 vs. ANSI/HI 1.6 Centrifugal Pump Testing

    Folks, Got a testing question for you as its not my area. I specified testing according to PTC 8.2 (I have a copy and it covered that which I wanted). I'm buying a Hayward-Gordon centrifugal pump (item replacement) and they only test according to Hydraulic Institute standard 1.6 and want me to...
  16. GrimesFrank

    The $$$ on the Paycheque vs Going Home

    Might be redundant thread but I need some perspective. Some background 1. Was working a couple years for a plant back home, not making much, long commute, talk of plant shutdown, turn down economy, etc. Left (1400 km away) for the big city and big money with family in tow. No other family...
  17. GrimesFrank

    Hoist Block Spring Interact with Limit Switch

    My company has purchased a trolley w/ 5t hoist and we've come to find out we need to raise the load an additional 6 inches. Raising the hoist/trolley assembly is not an option. It has been suggested by our craning guys, just remove the 6 inch free length spring that encapsulates the chain just...
  18. GrimesFrank

    Overcoming the Obstacle of Subjective Procedures

    Situation Work with a colleague who is a tree's mortal enemy, prints out every detail imagineable. As part of company procedure he peer reviews/signs my work as I do his. He refuses to sign my work alot of the time as I don't "package" my work to the standard and care he does (nicely saying I...
  19. GrimesFrank

    Advancing on Paper Faster than Real Life....Anyone Else?

    Situation Aging workforce near retirement. Realizing succession planning too late. Hire young guns in. Have "training" plans in place but little meat behind them. Training really dependent on quality of work coming in and go-getter attitude of employee working on it. Been picked to be first...
  20. GrimesFrank

    Referencing Different Editions of the Same Book

    Pretext: This is all within the realm of ASME Sec III ND (CED 1974) I have a manufacturer providing me with a design report for a replacement valve. I have asked a couple seniors in my group for advice and want other opinions. The valve designer is using B16.5-1968 to establish P-T ratings, as...

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