The document summarizes an online presentation about field services provided by Piping Technology & Products, including on-site inspections, installations, maintenance and problem resolutions related to pipe supports, expansion joints, and other piping components. Key areas discussed include inspecting and evaluating variable spring supports, constant spring supports, restraint devices, hardware, pipe shoes, slide plates and expansion joints. Guidelines are provided for inspecting, replacing, adjusting or installing these various piping components. Examples of problem resolutions are also described.
55. Problem Resolution - Case #1 Problem: Bearing failure causing the upthrust constant to function incorrectly Resolution: Slide Plates and Shafts must be Installed
56. 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. Thank You For Attending… Our Field Services Webinar Please send any additional questions or inquiries to info@pipingtech.com We invite you to visit our Discussion Forum at www.pipingtech.com
Editor's Notes
Condition of support components including: Variable springs Constant springs Restraint devices Hardware Pipe shoes Slide plates Expansion joints
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
LEFT PIC: Constant Support in Jamaica-Travel Pin is Rusted and Decayed
Which would include: Hydraulic snubbers Mechanical snubbers Sway struts Sway braces
** replacement inspection performed relying on data sheets or drawings or a combination of the two for comparisons
** Maintenance: not able to maintain them – maintenance not required up until point of replacement
** Maintenance: not able to maintain them – maintenance not required up until point of replacement
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.
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.