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Monday, February 12, 2024

TPS (Tubular Pipe Sleeve) Installation Guide

 TPS Application Instructions

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     TPS is a slip on sleeve that is used frequently on pipelines where the operating temperature will be under 140F.  Available for pipelines: 2", 2.5", 3.5", 4.5", 6" and 8" there are still a lot of customers out there who prefer installing tubular shrink sleeves to act as their field joint corrosion on standard, buried pipelines (not road bores).  

1. Before making the weld, slide the TPS shrink sleeve over the pipe end and slide it about 12" away from the weld area (LEAVE THE RELEASE PAPER ON).  It is often wise to loosen the release paper before sliding onto the pipe.

2.  Clean the weld area with a hand or power wire brush to remove rust, dirt, weld spatter and foreign mateials.  Also clean the adjacent factory applied pipe coating that will be covered by the sleeve.
3.  Preheat the joint until you reach a temperature of appoximately 140F.
4.  Remove the inner protective release film of the sleeve.  Center the sleeve over the preheated joint allowing 2 inches of overlap (at least) onto the mill coating.  Adjust the flam to approximately 20 inches.  The desired flame should be approximately 1/3 blue cone and 2/3 visible yellow.
5.  Heat the sleeve, beginning in the center.  Start at the bottom and move upward on both sides.  Work to one end, then the other as shrinkage occurs.  Keep the torch moving and apply heat evenly around the sleeve until the pattern of the backing has disappeared and the backing has a smooth surface.  During shrink down occasionally check mastic flow with a gloved finger.  Wrinkles should disappear automatically.  
6.  The sleeve is fully recovered when all of the following have occurred:
- No cold spots on the sleeve surface
- The weld bead profile is visible on the sleeve
- After the sleeve is cool, mastic flow is evident on both edges
- The pattern on the backing has disappeared and the backing has a smooth surface.

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