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Field Services Webinar

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Piping Technology & Products, Inc.

This Webinar will focus on installation and maintenance guidelines and offer valuable tips on inspecting a wide variety of pipe supports and expansion joints in your piping system. We will cover various pipe support applications and point out signs that indicate if a particular support needs replaced or adjusted. Obtain the knowledge you need to avoid the possibility of a potentially catastrophic situation.

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Attention All Attendees… Welcome! To listen to the audio portion: 1.) Make sure your speakers or headset are on and turned up. OR 2.) Dial the phone number listed in your confirmation e-mail: Thank you for attending. We will be starting shortly. 10:00 am Time Slot U.S. #: (1) 323-417-4600 Access Code: 673-609-283 2:00 pm Time Slot U.S. #: (1) 323-417-4600 Access Code: 342-641-338
Piping Technology & Products, Inc. Field Service: On-Site Survey & Inspection, Installation & Maintenance and Problem Resolution David Baker: David Baker: Presents Mr. David Baker Field Services Manager
PT&P Structure U.S. Bellows, INC. Metallic Expansion Joints Thin-wall, Thick-wall Fabric Expansion Joints Rectangular Expansion Joints Slip-type Member of EJMA SWECO FAB, INC. Pressure Vessels Pig Launchers & Receivers Spectacle/Line Blinds Instrument Supports ASME/Misc. Fabrication ASME U-Stamp Pipe Shields, INC. Insulated Pipe Support Commercial & Light industrial Heavy Industrial - based on Mounted, Anchors Pipe Riser Clamps Fronek A/D E. Hydraulic Snubbers Short strut Adjustable strut Mechanical Snubbers DynA/Damp Compensating Strut ASME Nuclear Qualified PIPING TECHNOLOGY & PRODUCTS, INC. Engineered Pipe Supports Variables, 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 ICBO Certified, Member of MSS, SPED, APFA
Field Services 􀂄 On-site Survey & Inspection 􀂄 Installation & Maintenance 􀂄 Problem Resolution
On-Site Survey & Inspection General Inspection Includes Review of: Piping irregularities Apparent damage Interferences Condition of support components
Guidelines for On-Site Survey & Inspection Inspections can be performed During operation During a shut-down Or both Frequency of inspections Provide accessibility Maintain results and develop a follow-up inspection schedule On-Site Survey & Inspection
Designed to support a specified load: weight of the pipe, commodity, flanges, valves, refractory & insulation through the install to operating thermal deflection cycle Coiled springs are used to support the load and allow movement Resistance of the coil to a load changes during compression, which is why these devices are called “variables” Many different designs for variable supports and a particular nomenclature used to identify them On-Site Survey & Inspection – Variable Spring
On-Site Survey & Inspection – Variable Spring Type A Type B Type C Type D Type E Type F Type G
Visually inspect each spring hanger: Search for signs of visual cracks, fractures, and corrosion of the spring casing and the following: (1) beam attachment (2) pin (3) spring hanger attachment (4) pipe clamp attachment (5) weldless eye nut (6) threaded rod (9) spring coil Check (7) turnbuckle (if present), lock nuts (8) and other threaded items to ensure they are secured and fastened Compare the position of the (10) coil with the hot/cold load indicator and operating range of the spring Check the mobility of the (11) load column On-Site Survey & Inspection – Variable Spring
Load Verification Read load position Determine load is acceptable/unacceptable Possible causes of unacceptability On-Site Survey & Inspection – Variable Spring
Replacement Criteria Signs of Excessive corrosion or fatigue Rust Damage of entire unit Modifications to operating conditions On-Site Survey & Inspection – Variable Spring Excessively corroded spring supports
Adjustment Criteria After installation and plant startup, the spring load indicator should be at the hot position. If not, the hanger should be adjusted to the hot/operating load position On-Site Survey & Inspection – Variable Spring
On-Site Survey & Inspection – Variable Spring Field Examples
Used when large amounts of thermal deflections are involved (2” or more) and around sensitive rotating equipment where a load variation could be harmful. On-Site Survey & Inspection – Constant Spring
Horizontal Constants Spring can aligns horizontally Permits movements vertically On-Site Survey & Inspection – Constant Spring Vertical Constants Spring can aligns vertically Permits movements vertically Upthrust Constants Permits vertical movement only Spring can aligns vertically or horizontally
Visually inspect each Constant hanger: Search for signs of visual cracks, fractures, and corrosion of the spring casing and the following: (1) beam attachment (2) pin (3) constant hanger attachment (4) pipe clamp attachment (5) weldless eye nut (6) threaded rod (9) spring coil (10) Check to see if Travel Stops are removed Check (7) turnbuckle (if present), lock nuts (8) and other threaded items to ensure they are secured and fastened Compare the position of the (10) coil with the hot/cold load indicator and operating range of the spring Check the mobility of the (11) load column On-Site Survey & Inspection – Constant Spring Before and After Picture of Constant Load Support that Was Resized
On-Site Survey & Inspection – Constant Spring Replacement Criteria: Signs of excessive corrosion or fatigue Rust damage of entire unit Modifications to operating conditions Consider internal components (cam mechanisms, bearings, etc.)
On-Site Survey & Inspection – Constant Spring Adjustment Criteria After installation and plant startup, the spring load indicator should be at the hot position. If not, the hanger should be adjusted to the hot/operating load position Consider the position of rod (swing angle also) Consider adjustment of load (+/- 10%)
Field Examples On-Site Survey & Inspection – Constant Spring
Restraint Devices Oppose Shock loadings Brace pipe against sway Guide or Restrain movement On-Site Survey & Inspection – Restraint Devices
On-Site Survey & Inspection – Restraint Devices Hydraulic Snubber Designed to allow thermal movement, but restrain impulsive or cyclic disturbance Good for earthquakes, wind and continuous thrust due to safety valve "blow-off" or pipe rupture
Mechanical Snubber Designed to prevent shock forces Limits damaging motions by becoming (locking) a load carrying member On-Site Survey & Inspection – Restraint Devices
Sway Struts Restrains movement in one direction while allowing movement in another direction Effective under compressive or tensile forces Allows for field adjustment On-Site Survey & Inspection – Restraint Devices
Sway Brace recommended to reduce high frequency movement guiding or restraining the movement of pipe resulting from thermal expansion bracing a pipe line against sway can be utilized in tension or compression On-Site Survey & Inspection – Restraint Devices
On-Site Survey & Inspection – Restraint Devices Visually inspect each sway brace/strut/snubber: End bracket Pipe clamp attachment pins Check for tight snug fit Mark actual hot/cold deflections (snubbers) Check for leakages (hydraulic snubbers) Look at hardware, and site glass If there is no oil visible in the site glass, add oil Contact manufacturer Check for lockups (mechanical snubbers) Turnbuckle/locknuts Threaded rod Record findings
On-Site Survey & Inspection – Restraint Devices Replacement Criteria Visible signs of leakage including seal damage Obvious signs of breakage Excessive corrosion or rust damage Modifications to design conditions Adjustment Criteria Only the C-C dimension (available length) can be adjusted
On-Site Survey & Inspection – Restraint Devices Field Examples
Hardware: miscellaneous components required to complete a specified assembly On-Site Survey & Inspection – Hardware
On-Site Survey & Inspection – Hardware To allow adjustment of height or elevation: Job-fabricated Pipe Hanger Trapeze Hanger Double Bolt Pipe Clamp Adjustable Clevis Adjustable Rings
On-Site Survey & Inspection – Hardware Inspection Criteria Check for damaged support steel Check for damaged hanger clamps Bent hanger rods, hardware, etc. Defective hanger hardware such as: disengaged load pins loose locknuts missing retaining rings cracked or inadequate welds
Replacement Criteria Bent or broken components Excessive corrosion or rust damage Improperly sized components Adjustment Criteria Tighten or loosen rigid rod supports Align components Secure any lock nuts, cotter pins, etc. On-Site Survey & Inspection – Hardware No Lock Nut
On-Site Survey & Inspection – Hardware Field Examples Clamp and Pipe Heavily Corroded Clevis Hanger Needs Replaced Bent Hanger Rod
Basic Pipe Shoe Designed to support vertical loads Clamp Type used when welding to pipe is not allowed Welded Type used when excessive axial force is present Guided Type and Sliding Type Insulated Type Designed to both insulate and support the pipe On-Site Survey & Inspection – Pipe Shoes Coldshoe for LNG Plant Clamp Type
Visually inspect each pipe shoe: Check for corrosion Check for structural integrity Check for slippage Check for insulation damage (pre-insulated supports) Check for insulating properties (pre-insulated supports) On-Site Survey & Inspection – Pipe Shoes Welded Type Pipe Shoes
On-Site Survey & Inspection – Pipe Shoes Field Examples
Types of Slide Plates - Offers a low coefficient of friction for sliding surfaces: PTFE, 25% Glass Filled Designed to allow objects to move (slide) freely along the supporting surface ambient temperature. Graphite Slides Designed to allow objects to move (slide) freely along the supporting surface at higher temperatures. On-Site Survey & Inspection – Slide Plates PTFE, 25% Glass Filled Graphite
On-Site Survey & Inspection – Slide Plates PTFE, 25% Glass Filled and Stainless Steel Designed to allow objects to move (slide) freely along the supporting surface ambient temperature while resisting oxidation. Bronzphite ® For high temp and heavy loads Marinite ® For extremely high temperatures Bronzphite ® Marinite ®
On-Site Survey & Inspection – Slide Plates Visually inspect each slide plate: Corrosion Bonding Damage Cleanliness Welds Orientation Gaps Missing parts Damaged Slide Plate Slide Plate Not Attached Slide Plate Not Attached
Replacement Criteria Excessive damage to sliding surfaces Disbonding of sliding material Improper sizing of slide plates Improper application (regarding temp./load) On-Site Survey & Inspection – Slide Plates
On-Site Survey & Inspection – Expansion Joints
On-Site Survey & Inspection – Expansion Joints Inspection Criteria Develop inspection routine Check movement Look for signs of corrosion on the bellows Review condition of threaded fasteners Check flow direction and position Correct application of expansion joint Check for removal of shipping bars
Replacement Criteria Excessive corrosion or fatigue Cracks formed in the bellows Leakage or loss of pressure Excessive deformation Adjustment Criteria Unable to adjust On-Site Survey & Inspection – Expansion Joints
Installation & Maintenance
Installation/Maintenance – Variable Spring Securely attach bottom of spring to the existing structure Pass hanger rod through fabricated load column (type D & E only) Attach other related hardware After hydro-testing (if applicable) , then remove travel stops Adjust the load indicator to desired setting (cold/hot load)
Load Adjustment Spring hanger missing a name plate Change in load is still within working range of spring support Cost of field time & equipment required is less than the cost of new spring hanger Maintenance Guidelines Utilize the spring’s load column to set load point within the spring’s operating range Installation/Maintenance – Variable Spring
Installation/Maintenance – Variable/Constant Springs Shutdown/Isolation Procedures Step 1: Provide temporary support Step 2: Re-install travel stops Step 3: Secure them to housing Step 4: Remove load from spring assembly Step 5: Remove spring hanger assembly
Re-calibration: Constant hanger missing a name plate Load change is less than 10% Spring is in good operating condition Cost of field time & equipment required is less than the cost of new spring hanger Installation/Maintenance – Constant Spring
PT&P’s Standard Finish: - Hot Dipped Galvanized Hardware - Neoprene Coated Springs PT&P’s Springs are Double the Life Span
Other Suppliers Standard Finish: - Cadmium-Plated - Painted or Unfinished PT&P’s Springs are Double the Life Span “ To prevent rusting and extend the life of your spring support, go with PT&P’s standard galvanized finish with neoprene coated springs.”
Snubbers Confirm direction/magnitude of thermal motion Verify snubber piston position Position end brackets and/or clamp Weld end brackets Secure pipe clamp in position Install snubber b/w end bracket point and clamp point Sway Struts/Sway Braces Confirm overall length required Same guidelines pertain except for considering thermal movement Installation/Maintenance – Restraint Devices
Shutdown/Isolation Procedures Lines/equipment must have a temporary support while repairs are made Mark actual hot / cold deflections (snubbers) Disconnect pins from rear bracket & clamp Remove strut / snubber Installation/Maintenance – Restraint Devices Bent Sway Brace
Installation/Maintenance – Hardware Lines/equipment must have a temporary support while repairs are made Remove the component Installation Guidelines – Rod Hanger Secure the hanger to the existing structure Attach the connecting rod to the beam attachment and pipe clamp Transfer the load by rotating the particular component Shutdown/Isolation Procedures
Shutdown/Isolation Procedures Check for proper location (offset condition) Install pipe shoe(s) by welding or bolting (proper bolt torque) If required, install guides or stops Installation Guidelines – Pipe shoes Installation/Maintenance – Pipe Shoes Lines/equipment must have a temporary support while repairs are made Unbolt clamp-on type shoes Remove weld b/w saddle plate and pipe on weld-on shoes Remove insulation where applicable Remove pipe shoe base
Shutdown/Isolation Procedures Lines/equipment must have a temporary support while repairs are made Gain close access to the slide plate(s) Remove weld from backing plate and support structure Remove the existing slide plate(s) Installation Guidelines – Slide plates Surface must be smooth & clean prior to installation Prepare mating surfaces to be welded Align slide plate into position Stitch weld into position following the drawing guidelines Installation/Maintenance – Slide Plates
Critical Phases During Install Protect bellows during install to prevent damage Confirm alignment Pre-position bellows as required (regarding initial deflection) Install anchors, guides, or supports Weld/Bolt bellows in place Remove any shipping banding devices Maintenance Periodic in-service inspections Virtually maintenance free Installation/Maintenance – Expansion Joints Expansion Joint with Refurbished Bellows
Inspection & Maintenance are ESSENTIAL Leaking flanges Continued pump & turbine problems related to bearings, seals and misalignment Sagging lines and liquid trapped in low sections Increased system stresses resulting in potential piping failures Consequences of NOT inspecting & maintaining pipe supports, hardware, & expansion joints:
Problem Resolution
Problem Resolution - Case #1 Problem: Bearing failure causing the upthrust constant to function incorrectly Resolution: Slide Plates and Shafts must be Installed
Problem Resolution - Case #2 Problem: Line anchors failed causing 48” joint to squirm Resolution: Fabricate new expansion joint fabricated, shipped back to customer and installed all within 2 days
Instructions for removal of travel stop pin Turn turnbuckle clockwise if B-face of the travel stop pin is in contact with the travel stop keyhole (if the pin is jammed at the top of the hole) Turn turnbuckle counterclockwise if A-face of the travel stop pin is in contact with the travel stop keyhole (if pin is jammed at bottom of hole) When the pin is centered in the keyhole, travel stop pin can be removed Problem Resolution - Case #3 Constants on trapeze assembly Problem: Travel stops left in place on constant assembly Resolution:
Emergency Services
Thank You For Attending… Field Services Webinar Please send any additional questions or inquiries to [email_address] Online Quote: www.pipingtech.com/quote Online Catalog: www.pipingtech.com/catalog Technical Webinars: www.pipingtech.com/webinar Blog: www.pipesupportsblog.com

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Field Services Webinar

  • 1. Attention All Attendees… Welcome! To listen to the audio portion: 1.) Make sure your speakers or headset are on and turned up. OR 2.) Dial the phone number listed in your confirmation e-mail: Thank you for attending. We will be starting shortly. 10:00 am Time Slot U.S. #: (1) 323-417-4600 Access Code: 673-609-283 2:00 pm Time Slot U.S. #: (1) 323-417-4600 Access Code: 342-641-338
  • 2. Piping Technology & Products, Inc. Field Service: On-Site Survey & Inspection, Installation & Maintenance and Problem Resolution David Baker: David Baker: Presents Mr. David Baker Field Services Manager
  • 3. PT&P Structure U.S. Bellows, INC. Metallic Expansion Joints Thin-wall, Thick-wall Fabric Expansion Joints Rectangular Expansion Joints Slip-type Member of EJMA SWECO FAB, INC. Pressure Vessels Pig Launchers & Receivers Spectacle/Line Blinds Instrument Supports ASME/Misc. Fabrication ASME U-Stamp Pipe Shields, INC. Insulated Pipe Support Commercial & Light industrial Heavy Industrial - based on Mounted, Anchors Pipe Riser Clamps Fronek A/D E. Hydraulic Snubbers Short strut Adjustable strut Mechanical Snubbers DynA/Damp Compensating Strut ASME Nuclear Qualified PIPING TECHNOLOGY & PRODUCTS, INC. Engineered Pipe Supports Variables, 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 ICBO Certified, Member of MSS, SPED, APFA
  • 4. Field Services 􀂄 On-site Survey & Inspection 􀂄 Installation & Maintenance 􀂄 Problem Resolution
  • 5. On-Site Survey & Inspection General Inspection Includes Review of: Piping irregularities Apparent damage Interferences Condition of support components
  • 6. Guidelines for On-Site Survey & Inspection Inspections can be performed During operation During a shut-down Or both Frequency of inspections Provide accessibility Maintain results and develop a follow-up inspection schedule On-Site Survey & Inspection
  • 7. Designed to support a specified load: weight of the pipe, commodity, flanges, valves, refractory & insulation through the install to operating thermal deflection cycle Coiled springs are used to support the load and allow movement Resistance of the coil to a load changes during compression, which is why these devices are called “variables” Many different designs for variable supports and a particular nomenclature used to identify them On-Site Survey & Inspection – Variable Spring
  • 8. On-Site Survey & Inspection – Variable Spring Type A Type B Type C Type D Type E Type F Type G
  • 9. Visually inspect each spring hanger: Search for signs of visual cracks, fractures, and corrosion of the spring casing and the following: (1) beam attachment (2) pin (3) spring hanger attachment (4) pipe clamp attachment (5) weldless eye nut (6) threaded rod (9) spring coil Check (7) turnbuckle (if present), lock nuts (8) and other threaded items to ensure they are secured and fastened Compare the position of the (10) coil with the hot/cold load indicator and operating range of the spring Check the mobility of the (11) load column On-Site Survey & Inspection – Variable Spring
  • 10. Load Verification Read load position Determine load is acceptable/unacceptable Possible causes of unacceptability On-Site Survey & Inspection – Variable Spring
  • 11. Replacement Criteria Signs of Excessive corrosion or fatigue Rust Damage of entire unit Modifications to operating conditions On-Site Survey & Inspection – Variable Spring Excessively corroded spring supports
  • 12. Adjustment Criteria After installation and plant startup, the spring load indicator should be at the hot position. If not, the hanger should be adjusted to the hot/operating load position On-Site Survey & Inspection – Variable Spring
  • 13. On-Site Survey & Inspection – Variable Spring Field Examples
  • 14. Used when large amounts of thermal deflections are involved (2” or more) and around sensitive rotating equipment where a load variation could be harmful. On-Site Survey & Inspection – Constant Spring
  • 15. Horizontal Constants Spring can aligns horizontally Permits movements vertically On-Site Survey & Inspection – Constant Spring Vertical Constants Spring can aligns vertically Permits movements vertically Upthrust Constants Permits vertical movement only Spring can aligns vertically or horizontally
  • 16. Visually inspect each Constant hanger: Search for signs of visual cracks, fractures, and corrosion of the spring casing and the following: (1) beam attachment (2) pin (3) constant hanger attachment (4) pipe clamp attachment (5) weldless eye nut (6) threaded rod (9) spring coil (10) Check to see if Travel Stops are removed Check (7) turnbuckle (if present), lock nuts (8) and other threaded items to ensure they are secured and fastened Compare the position of the (10) coil with the hot/cold load indicator and operating range of the spring Check the mobility of the (11) load column On-Site Survey & Inspection – Constant Spring Before and After Picture of Constant Load Support that Was Resized
  • 17. On-Site Survey & Inspection – Constant Spring Replacement Criteria: Signs of excessive corrosion or fatigue Rust damage of entire unit Modifications to operating conditions Consider internal components (cam mechanisms, bearings, etc.)
  • 18. On-Site Survey & Inspection – Constant Spring Adjustment Criteria After installation and plant startup, the spring load indicator should be at the hot position. If not, the hanger should be adjusted to the hot/operating load position Consider the position of rod (swing angle also) Consider adjustment of load (+/- 10%)
  • 19. Field Examples On-Site Survey & Inspection – Constant Spring
  • 20. Restraint Devices Oppose Shock loadings Brace pipe against sway Guide or Restrain movement On-Site Survey & Inspection – Restraint Devices
  • 21. On-Site Survey & Inspection – Restraint Devices Hydraulic Snubber Designed to allow thermal movement, but restrain impulsive or cyclic disturbance Good for earthquakes, wind and continuous thrust due to safety valve "blow-off" or pipe rupture
  • 22. Mechanical Snubber Designed to prevent shock forces Limits damaging motions by becoming (locking) a load carrying member On-Site Survey & Inspection – Restraint Devices
  • 23. Sway Struts Restrains movement in one direction while allowing movement in another direction Effective under compressive or tensile forces Allows for field adjustment On-Site Survey & Inspection – Restraint Devices
  • 24. Sway Brace recommended to reduce high frequency movement guiding or restraining the movement of pipe resulting from thermal expansion bracing a pipe line against sway can be utilized in tension or compression On-Site Survey & Inspection – Restraint Devices
  • 25. On-Site Survey & Inspection – Restraint Devices Visually inspect each sway brace/strut/snubber: End bracket Pipe clamp attachment pins Check for tight snug fit Mark actual hot/cold deflections (snubbers) Check for leakages (hydraulic snubbers) Look at hardware, and site glass If there is no oil visible in the site glass, add oil Contact manufacturer Check for lockups (mechanical snubbers) Turnbuckle/locknuts Threaded rod Record findings
  • 26. On-Site Survey & Inspection – Restraint Devices Replacement Criteria Visible signs of leakage including seal damage Obvious signs of breakage Excessive corrosion or rust damage Modifications to design conditions Adjustment Criteria Only the C-C dimension (available length) can be adjusted
  • 27. On-Site Survey & Inspection – Restraint Devices Field Examples
  • 28. Hardware: miscellaneous components required to complete a specified assembly On-Site Survey & Inspection – Hardware
  • 29. On-Site Survey & Inspection – Hardware To allow adjustment of height or elevation: Job-fabricated Pipe Hanger Trapeze Hanger Double Bolt Pipe Clamp Adjustable Clevis Adjustable Rings
  • 30. On-Site Survey & Inspection – Hardware Inspection Criteria Check for damaged support steel Check for damaged hanger clamps Bent hanger rods, hardware, etc. Defective hanger hardware such as: disengaged load pins loose locknuts missing retaining rings cracked or inadequate welds
  • 31. Replacement Criteria Bent or broken components Excessive corrosion or rust damage Improperly sized components Adjustment Criteria Tighten or loosen rigid rod supports Align components Secure any lock nuts, cotter pins, etc. On-Site Survey & Inspection – Hardware No Lock Nut
  • 32. On-Site Survey & Inspection – Hardware Field Examples Clamp and Pipe Heavily Corroded Clevis Hanger Needs Replaced Bent Hanger Rod
  • 33. Basic Pipe Shoe Designed to support vertical loads Clamp Type used when welding to pipe is not allowed Welded Type used when excessive axial force is present Guided Type and Sliding Type Insulated Type Designed to both insulate and support the pipe On-Site Survey & Inspection – Pipe Shoes Coldshoe for LNG Plant Clamp Type
  • 34. Visually inspect each pipe shoe: Check for corrosion Check for structural integrity Check for slippage Check for insulation damage (pre-insulated supports) Check for insulating properties (pre-insulated supports) On-Site Survey & Inspection – Pipe Shoes Welded Type Pipe Shoes
  • 35. On-Site Survey & Inspection – Pipe Shoes Field Examples
  • 36. Types of Slide Plates - Offers a low coefficient of friction for sliding surfaces: PTFE, 25% Glass Filled Designed to allow objects to move (slide) freely along the supporting surface ambient temperature. Graphite Slides Designed to allow objects to move (slide) freely along the supporting surface at higher temperatures. On-Site Survey & Inspection – Slide Plates PTFE, 25% Glass Filled Graphite
  • 37. On-Site Survey & Inspection – Slide Plates PTFE, 25% Glass Filled and Stainless Steel Designed to allow objects to move (slide) freely along the supporting surface ambient temperature while resisting oxidation. Bronzphite ® For high temp and heavy loads Marinite ® For extremely high temperatures Bronzphite ® Marinite ®
  • 38. On-Site Survey & Inspection – Slide Plates Visually inspect each slide plate: Corrosion Bonding Damage Cleanliness Welds Orientation Gaps Missing parts Damaged Slide Plate Slide Plate Not Attached Slide Plate Not Attached
  • 39. Replacement Criteria Excessive damage to sliding surfaces Disbonding of sliding material Improper sizing of slide plates Improper application (regarding temp./load) On-Site Survey & Inspection – Slide Plates
  • 40. On-Site Survey & Inspection – Expansion Joints
  • 41. On-Site Survey & Inspection – Expansion Joints Inspection Criteria Develop inspection routine Check movement Look for signs of corrosion on the bellows Review condition of threaded fasteners Check flow direction and position Correct application of expansion joint Check for removal of shipping bars
  • 42. Replacement Criteria Excessive corrosion or fatigue Cracks formed in the bellows Leakage or loss of pressure Excessive deformation Adjustment Criteria Unable to adjust On-Site Survey & Inspection – Expansion Joints
  • 44. Installation/Maintenance – Variable Spring Securely attach bottom of spring to the existing structure Pass hanger rod through fabricated load column (type D & E only) Attach other related hardware After hydro-testing (if applicable) , then remove travel stops Adjust the load indicator to desired setting (cold/hot load)
  • 45. Load Adjustment Spring hanger missing a name plate Change in load is still within working range of spring support Cost of field time & equipment required is less than the cost of new spring hanger Maintenance Guidelines Utilize the spring’s load column to set load point within the spring’s operating range Installation/Maintenance – Variable Spring
  • 46. Installation/Maintenance – Variable/Constant Springs Shutdown/Isolation Procedures Step 1: Provide temporary support Step 2: Re-install travel stops Step 3: Secure them to housing Step 4: Remove load from spring assembly Step 5: Remove spring hanger assembly
  • 47. Re-calibration: Constant hanger missing a name plate Load change is less than 10% Spring is in good operating condition Cost of field time & equipment required is less than the cost of new spring hanger Installation/Maintenance – Constant Spring
  • 48. PT&P’s Standard Finish: - Hot Dipped Galvanized Hardware - Neoprene Coated Springs PT&P’s Springs are Double the Life Span
  • 49. Other Suppliers Standard Finish: - Cadmium-Plated - Painted or Unfinished PT&P’s Springs are Double the Life Span “ To prevent rusting and extend the life of your spring support, go with PT&P’s standard galvanized finish with neoprene coated springs.”
  • 50. Snubbers Confirm direction/magnitude of thermal motion Verify snubber piston position Position end brackets and/or clamp Weld end brackets Secure pipe clamp in position Install snubber b/w end bracket point and clamp point Sway Struts/Sway Braces Confirm overall length required Same guidelines pertain except for considering thermal movement Installation/Maintenance – Restraint Devices
  • 51. Shutdown/Isolation Procedures Lines/equipment must have a temporary support while repairs are made Mark actual hot / cold deflections (snubbers) Disconnect pins from rear bracket & clamp Remove strut / snubber Installation/Maintenance – Restraint Devices Bent Sway Brace
  • 52. Installation/Maintenance – Hardware Lines/equipment must have a temporary support while repairs are made Remove the component Installation Guidelines – Rod Hanger Secure the hanger to the existing structure Attach the connecting rod to the beam attachment and pipe clamp Transfer the load by rotating the particular component Shutdown/Isolation Procedures
  • 53. Shutdown/Isolation Procedures Check for proper location (offset condition) Install pipe shoe(s) by welding or bolting (proper bolt torque) If required, install guides or stops Installation Guidelines – Pipe shoes Installation/Maintenance – Pipe Shoes Lines/equipment must have a temporary support while repairs are made Unbolt clamp-on type shoes Remove weld b/w saddle plate and pipe on weld-on shoes Remove insulation where applicable Remove pipe shoe base
  • 54. Shutdown/Isolation Procedures Lines/equipment must have a temporary support while repairs are made Gain close access to the slide plate(s) Remove weld from backing plate and support structure Remove the existing slide plate(s) Installation Guidelines – Slide plates Surface must be smooth & clean prior to installation Prepare mating surfaces to be welded Align slide plate into position Stitch weld into position following the drawing guidelines Installation/Maintenance – Slide Plates
  • 55. Critical Phases During Install Protect bellows during install to prevent damage Confirm alignment Pre-position bellows as required (regarding initial deflection) Install anchors, guides, or supports Weld/Bolt bellows in place Remove any shipping banding devices Maintenance Periodic in-service inspections Virtually maintenance free Installation/Maintenance – Expansion Joints Expansion Joint with Refurbished Bellows
  • 56. Inspection & Maintenance are ESSENTIAL Leaking flanges Continued pump & turbine problems related to bearings, seals and misalignment Sagging lines and liquid trapped in low sections Increased system stresses resulting in potential piping failures Consequences of NOT inspecting & maintaining pipe supports, hardware, & expansion joints:
  • 58. Problem Resolution - Case #1 Problem: Bearing failure causing the upthrust constant to function incorrectly Resolution: Slide Plates and Shafts must be Installed
  • 59. Problem Resolution - Case #2 Problem: Line anchors failed causing 48” joint to squirm Resolution: Fabricate new expansion joint fabricated, shipped back to customer and installed all within 2 days
  • 60. Instructions for removal of travel stop pin Turn turnbuckle clockwise if B-face of the travel stop pin is in contact with the travel stop keyhole (if the pin is jammed at the top of the hole) Turn turnbuckle counterclockwise if A-face of the travel stop pin is in contact with the travel stop keyhole (if pin is jammed at bottom of hole) When the pin is centered in the keyhole, travel stop pin can be removed Problem Resolution - Case #3 Constants on trapeze assembly Problem: Travel stops left in place on constant assembly Resolution:
  • 62. Thank You For Attending… Field Services Webinar Please send any additional questions or inquiries to [email_address] Online Quote: www.pipingtech.com/quote Online Catalog: www.pipingtech.com/catalog Technical Webinars: www.pipingtech.com/webinar Blog: www.pipesupportsblog.com

Editor's Notes

  1. Condition of support components including: Variable springs Constant springs Restraint devices Hardware Pipe shoes Slide plates Expansion joints
  2. Top Left: Replace – due to corrosion Bottom Left: Adjust – VERY crooked Middle: Travel stop still in support Top Right: No load indicator Bottom Right: Variable not supporting the load
  3. LEFT PIC: Constant Support in Jamaica-Travel Pin is Rusted and Decayed
  4. Which would include: Hydraulic snubbers Mechanical snubbers Sway struts Sway braces
  5. ** replacement inspection performed relying on data sheets or drawings or a combination of the two for comparisons
  6. examples
  7. examples
  8. ** Maintenance: not able to maintain them – maintenance not required up until point of replacement
  9. ** Maintenance: not able to maintain them – maintenance not required up until point of replacement
  10. Problem: Up thrust constants are not designed to absorb lateral movement.  The side to side movement of the pipe caused the bearings to become damaged and eventually fail.  Solution: Since the constants cannot be reinstalled to change the direction of the force caused by the movement, slide plates and new shafts must be installed. Piping Technology and Products, designed a shaft that had a washer on the outside surface of the bearings to reinforce the bearing and prevent it from coming apart.  To further reduce the force of friction, slide plates were added between the top of the load table and the bottom of the pipe support. 
  11. Problem: Piping Technology & Products, Inc. received an emergency request through the website on Friday at 5:30 pm from a customer. The customer reported that the line anchors had failed, causing one of the 48” expansion joints to squirm. Resolution: Friday evening they sent PT&P the drawings and a purchase order for the job. On Saturday, the expansion joint was formed, and air freighted back to the customer on Sunday morning. The pipeline was back in operation on Sunday. PT&P suggested that tie rods be installed to prevent future squirming of the expansion joint.