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Pipe Support & EJ Field Examples & Case Studies

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In this Webinar we explore the details of actual case studies focusing on various signs that indicate if a particular support needs replaced or adjusted. The presentation also covers projects that brought on new standard designs and custom designs for specific applications. And lastly, it includes valuable additions and procedures that extend the typical life span of a pipe support.

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Pipe Support & EJ Field Examples & Case Studies

  1. 1. Piping Technology & Products, Inc. presents… Pipe Support & Expansion Joint Field Examples & Case Studies Webinar Attention Attendees : to listen to the audio portion, check that your speakers or headset are on and turned up OR dial the number and use the access code listed in your confirmation email. Attention P.E.’s : this Webinar is worth 1 PDH credit for TX P.E.’s (send request to [email_address] )
  2. 2. Jerry Godina Lead Pipe Support Designer
  3. 3. U.S. Bellows, Inc.  Metallic Expansion Joints  Thin-Wall and Thick-Wall  Rectangular Expansion Joints  Fabric Expansion Joints  Slip-Type Expansion Joints PIPING TECHNOLOGY & PRODUCTS, INC. - Engineered Pipe Supports - Variable, Constants, Big-tons - Vibration Control Devices – Snubbers, Sway Struts - Support Assembly Components – Clamps, misc. Hardware - Pre-insulated Pipe Supports – Cryogenic/cold & Hot Applications - Fabricated Pipe Shoes, Guides & Anchors - Slide Bearing Plates - Anchor Bolts, Embed Plates IAS Certified, Member of MSS, SPED, APFA Member of EJMA SWECO Fab, Inc.  Pressure Vessels  Pig Launchers/Receivers  Spectacle/Line Blinds  Instrument Supports  ASME/Misc. Fabrication ASME U-Stamp & R-Stamp Pipe Shields, Inc. Insulated Pipe Supports  Commercial & Light Industrial  Heavy Industrial – Base Mounted Types, Anchors  Pipe Riser Clamps ISO 9001-2000 Certified Fronek A/D Ent., Inc.  Hydraulic Snubbers - Short & Adjustable Strut  Mechanical Snubbers  dynA/Damp Compensating Strut ASME Nuclear Certified PT&P Structure
  4. 4. Case #1 – Design Custom Spring Supports for Special Requirements 1a: Large Movement Required and Limited Space <ul><li>Operating Load: 2,804 lb. </li></ul><ul><li>Installed Load: 3,505 lb. </li></ul><ul><li>Total Travel: 8 7/8 &quot; </li></ul>Solution : Custom Spring Housings and Components
  5. 5. Case #1 – Design Custom Spring Supports for Special Requirements <ul><li>Dimensions: 20&quot; x 20&quot; x 8 7/16&quot; </li></ul><ul><li>Load: 7839 lb. </li></ul><ul><li>Movement: 0.48&quot; Upward </li></ul><ul><li>Spring Rate: 1500 lb./in. </li></ul>1b: Large Load / Movement Required and Limited Space Solution : Incorporated “Big Ton Spring” Design H= 17 7/8 &quot;
  6. 6. Case #1 – Design Custom Spring Supports for Special Requirements <ul><li>Load: 50,022 lb. </li></ul><ul><li>Total Travel: 4 &quot; </li></ul><ul><li>Height: 26&quot; </li></ul>H= 34&quot; Solution : Develop a Custom Designed Support 1c: Large Load / Movement Required and Limited Space
  7. 7. Case #2 – Development of Slide Plates for High Temperature Applications Problem: Debonding of slide plate material from backing plate occurs due to high temperatures (over 350˚F.) Examples of Slide Plates Not Attached
  8. 8. Case #2 – Development of Slide Plates for High Temperature Applications Resolution: Develop Marinite insulator assembly to withstand high temperatures and high loads <ul><li>100 PSI to 2,500 PSI </li></ul><ul><li>Temperature: ½&quot; Insulator +400°F to +800°F </li></ul><ul><li>Coefficient of friction: 0.08 @ minimum pressure 0.06 @ maximum pressure </li></ul>Marinite
  9. 9. Case #3 – New Expansion Joint Design for Harsh Conditions Problem: Harsh operating conditions and environment decreased the usable life span of a metallic expansion joint
  10. 10. Resolution: Design and fabricate a replacement self-cleaning slip type expansion joint Case #3 – New Expansion Joint Design for Harsh Conditions Corrosion Resistant Inner Barrel Aluminum/Bronze Bearing Sleeve
  11. 11. Case #4 – Quick-Turn Service on Metallic Expansion Joint Problem: Failure of adjacent line anchors causes the failure of the 48” expansion joint Damaged Expansion Joint in the Field
  12. 12. Case #4 – Quick-Turn Service on Metallic Expansion Joint Resolution: Fabricate replacement expansion joint with limit rods incorporated into the design Limit Rods: Devices, usually in the form of rods or bars, attached to the expansion joint whose primary function is to prevent over-extension or over-compression of the bellows while restraining the full pressure loading and dynamic forces generated by a main anchor failure.
  13. 13. Case #5 – Site Survey Reveals Improper Installation Problem: Spring supports malfunction because of failure to remove travel stops Constant Springs with Travel Stops in Place Variable Springs with Travel Stops in Place
  14. 14. Resolution: Follow installation guidelines during opportune time to correctly remove travel stops Case #5 – Site Survey Reveals Improper Installation Constant Springs with Travel Stops Removed Variable Springs with Travel Stops Removed
  15. 15. Case #6 – Adjustment Required for Proper Functionality Problem: Improperly loaded spring supports cause inconsistent pipe system performance Decrease in Load Required Balance of Load Required Increase in Load Required
  16. 16. Case #6 – Adjustment Required for Proper Functionality Resolution: Field service must be performed on the supports in order to adjust the load to proper operating position and rectify the situation Spring Supports Adjusted to Operating Load Variable Spring at Installed Position
  17. 17. Case #7 – Site Survey Confirms Need to Replace Snubbers Problem: Miscalculation of snubber settings causes leakage of hydraulic reservoir Fully Extended Cylinder Completely Retracted Cylinder
  18. 18. Resolution: Provide new snubbers, set them correctly, and reinstall them in the piping system Case #7 – Site Survey Confirms Need to Replace Snubbers Removing the Damaged Snubber Newly Installed Replacements
  19. 19. Case #8 – Refurbish Roller Bearings in the Field Problem: High lateral loads caused failure of roller bearings on upthrust constant Resolution: Reduce lateral load and refurbish roller bearing shaft assemblies during outage
  20. 20. Case #8 – Refurbish Roller Bearings in the Field Removal of Damaged Components Installation of Replacement Parts
  21. 21. Case #9 – Field Installation of Low Friction Slide Plates Resolution: Field fabricate slide plates to be installed between the pipe stanchion and the support Problem: Initial design incorporated steel to steel sliding surfaces with high coefficients of friction (.6 to .7) Fabrication of Slide Plates in the Field
  22. 22. Case #9 – Field Installation of Low Friction Slide Plates Installation of Slide Plates in the Field New Coefficient of Friction: .08 to .12
  23. 23. Case #10 – Development of Multi-Function Support Problem: Inadequate support design causes pipe shoes to fail repeatedly
  24. 24. - The line temperatures ranged from 650°F to 1100°F. - PT&P performed full EPC services and manufactured all of the supports for this project. - Finite Element Analysis was also performed. Finite Element Analysis Resolution: Develop special design incorporating steel as the primary supporting element Case #10 – Development of Multi-Function Support
  25. 25. Case #10 – Development of Multi-Function Support Restoration of insulation after installation of new shoes Steam lines after installation of PT&P’s newly designed shoes
  26. 26. Other Suppliers Standard Finish: - Cadmium-Plated - Painted or Unfinished “ To prevent rusting and extend the life of your spring support, go with PT&P’s standard galvanized finish with neoprene coated springs.” Case #11 – Extend the Life of Standard Components
  27. 27. PT&P’s Standard Finish (Double the life span): - Hot Dipped Galvanized Hardware - Neoprene Coated Springs Case #11 – Extend the Life of Standard Components
  28. 28. Neoprene-coated Assemblies Bolts coated with PTFE 3-coat Paint System Duplex Coating Over Galvanized Finish Case #12 – Application of Alternative Coatings per Specification
  29. 29. Constant Support Slide Plate Bonded to Load Flange of Constant Spring Support Hot Shoe Slide Plate Added to Bottom of Hot Shoe Structural Supports Slide Plates Welded to the Inside of Structural Supports Case #13 – Reduce Lateral / Axial Loads Generated by Pipe Movement
  30. 30. Limit Stops When the assembly is overloaded, limit stops transfer the load to the housing protecting the spring Limit Rods Prevents the bellows from over-extending and absorbs the full pressure thrust during emergency situations Case #14 – Reduce the Effects of Exceeding Components Design Parameters
  31. 31. Phosphorus Bronze Phosphorus Bronze (underside) Stainless Steel Carbon Steel Base Case #15 – Produce Hybrid Supports Employing Multiple Characteristics
  32. 32. Grease Fitting Grout Pouring Access Point Polished Stainless Steel Countersunk Attachment Bolts Case #15 – Produce Hybrid Supports Employing Multiple Characteristics
  33. 33. <ul><li>Engineering and Design </li></ul><ul><ul><li>Piping, Pipe Support and Structural Design </li></ul></ul><ul><ul><li>3D Modeling Technology </li></ul></ul><ul><ul><li>Pipe Stress Analysis </li></ul></ul><ul><ul><ul><li>Caesar II </li></ul></ul></ul><ul><ul><li>Structural Analysis </li></ul></ul><ul><ul><ul><li>STAAD II </li></ul></ul></ul><ul><ul><li>Finite Element Analysis </li></ul></ul><ul><ul><ul><li>Special Stress/Thermal Problems </li></ul></ul></ul><ul><ul><ul><li>Pro/E for 3-D Part Design </li></ul></ul></ul><ul><ul><ul><li>ANSYS for Mesh Generation + Analysis + Results Analysis </li></ul></ul></ul><ul><ul><li>Field Testing </li></ul></ul>Engineering & Design – Technical Capabilities
  34. 34. <ul><li>On-site installation guidance </li></ul><ul><li>On-site inspection/maintenance of pipe supports </li></ul><ul><li>On-site snubber inspection </li></ul><ul><li>A system of stock standard Items </li></ul><ul><li>“ On-call” engineering team </li></ul><ul><li>Available 24x7 </li></ul>Value-Added Services
  35. 35. <ul><li>Houston, Texas, USA </li></ul><ul><li>450,000 square feet covered shop space </li></ul><ul><li>35 acre property </li></ul><ul><li>Located near Port of Houston for convenient shipping around the world </li></ul>Facility
  36. 36. PT&P Webinar: Pipe Support & Expansion Joint Field Examples & Case Studies Please send any additional questions or inquiries to [email_address] Useful Links: <ul><li>Online Quote: www.pipingtech.com/quote </li></ul><ul><li>Online Catalog: www.pipingtech.com/catalog </li></ul><ul><li>Technical Webinars: www.pipingtech.com/ webinar </li></ul><ul><li>Blog: www.pipesupportsblog.com </li></ul>

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