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  1. MechEngineer2012

    Job interviews not converting into job offers. Need suggestions!

    Hello everyone, I am currently in a role focused on sales but I am looking for a job that better aligns with my education (BSME) and technical experience. I have applied to several positions and had 3 interviews in 2024 but none resulted in job offer. I have noticed that my job interviews tend...
  2. MechEngineer2012

    Learning to operate Manual Lathe for Basic Ring Machining

    Hello Engineers: I am interested in acquiring the skill of operating a manual lathe and performing basic ring machining. This entails working with raw stock material, including additional material on the inner diameter (ID), outer diameter (OD), and length and machining it according to provided...
  3. MechEngineer2012

    Need help in understanding "drilling and tapping" hole specification

    Hello All, I kindly request your review of the attached drawing and appreciate your assistance in answering the following questions related to 2" 300 pound flange: Could you provide the depth specifications for the threads and the through straight hole? What is the significance of the...
  4. MechEngineer2012

    Recommended clearance between shaft and packing ring (solid)?

    Hello everyone, Could you provide the recommended clearance (min and max) between the shaft and the packing ring (solid ring made graphite)? We are transitioning from split packing to a solid one-piece design for a pump. As the packing will be compressed, we need to ensure that the clearance...
  5. MechEngineer2012

    Employer being tricky and trying to be cheap. Any suggestions?

    Dear All, Approximately eight months ago, I joined a new company (5th of my career) The initial phase was promising, marked by a steep learning curve as I strived for productivity and commendable outcomes. My responsibilities involve document preparation and submission for managerial approval...
  6. MechEngineer2012

    Nozzle thermal displacement on compressor package (skid) end connections

    Hello everyone, I want to figure out the "Nozzle thermal displacement" for connecting pipe nozzles in compressor and pump packages. These pipes handle the process and also the incoming and outgoing water for cooling. Can you help me find sources to estimate this displacement? It is for general...
  7. MechEngineer2012

    Butt weld X threaded 3/4 gate valve available?

    Hello All, Can someone confirm if Butt weld X threaded 3/4 gate valve is available in market? Which company can offer, if yes? I went to boney forge catalog but didn’t find it there.
  8. MechEngineer2012

    Best way to move forward? I have one job offer and waiting for response from other.

    Hello Engineer, I am currently employed and I had applied for two jobs about a month ago. The first job was very much aligned with my interests. I checked with HR person today and she said the hiring manager is out on vacation and will be back in 3 weeks. I have to wait till he makes the...
  9. MechEngineer2012

    Thrust/End play/float calculations for centrifugal pumps?

    Hello Engineers, I have been self teaching myself about pumps and have a theoretical question about centrifugal pump design. When a new pump is manufactured, during assembly of pump, a thrust clearance or End play is left. For example, On a typical horizontal single stage overhung pump (OH2...
  10. MechEngineer2012

    How is system curve determinded and drawn?

    Hello All, I have a theoretical question that came up to me when I was self teaching myself about pump operation. I read "The pump always operates at the intersection of the pump curve and the system curve." I can draw a pump curve by running a pump, changing the flow rate and finding out the...
  11. MechEngineer2012

    Seized studs on discharged flange of Between bearing pump

    Dear Engineers, I work as a shop Engineer for a pump repair shop and recently we received a Single stage-Between bearing-Radially split-Double suction impeller pump (BB2 per API 610). I found that some of the discharge flange studs were seized and customer (Refinery) had to cut them (see...
  12. MechEngineer2012

    Want to work for Oil Refinery as a Mechanical Engineer. Am I on the right track?

    Hello All, I graduated with BSME five years ago. I work as an Engineer in a pump repair shop. We receive all types of Centrifugal pumps (Overhung, Between Bearings, vertical pumps, etc), disassemble them and suggest the customers what they need to do. For example, -The shaft may have excessive...

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