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STOPKiT

STOPKiT. The design. The idea. When bleeding, the compression point method is used to stop the blood flow. A pressure must be applied on a precise location to stop the blood. Traditionnal repair systems.

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STOPKiT

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  1. STOPKiT The design

  2. The idea • When bleeding, the compression point method is used to stop the blood flow. • A pressure must be applied on a precise location to stop the blood

  3. Traditionnalrepairsystems On energy resources pipelines, two gigantic steel shells are used to stop really small leaks. This kind of repair system induces many drawbacks: • Hard implementation. • Very high weight for big diameters (over 500kg) • Long implementation time. • Heavy logistics means required. • High mechanical stress applied on pipe already weakened by corrosion.

  4. The new concept Very light belt Compression point Easy tightening system installation

  5. Advantages • The STOPKiT stops leaks. • Can be applied under pressure . • 10 minutes implementation • Can be applied up to 80 bars (tested up to 130 bars on pin holes) • Applicable on welds • The STOPKIT can fix old pipes without adding new stresses (patented concept) • Very ligthproduct, easy to carry and store • Applicable from 4 to 56 inchs. • Applicable from –20°C to +80°C

  6. Various versions • 2 versions : - Onshore - Offshore • The Stopkitcanbe : - Temporary - Permanent • Various patch sizes : - 50x100mm -100x100mm • For each version : - Stopkit single belts (4’’, 6’’, 8’’ et 10’’) - Stopkit multi-belts (ø > 10’’)

  7. Parts of the STOPKIT Entry bar Exit bar Applicator 50 x 100 & 100 x 100 mm Distributor 50 x 100 & 100 x 100 mm Screw Elastomer 50 x 100 & 100 x 100 mm STOPKIT belt

  8. Theory The patch Radial strength The belt Tangential tensile strength Tightening torque : 40 N.m Tightening system

  9. Theory Strength transmission and distribution • The Patch : key part of the STOPKIT, permits to stop the leak. It is made of 3 parts : • The applicator : Converts a part tangential strength to radial strength. • The distributor : Distributes the strength on the elastomeric part • The elastomer : creates the waterproofness. Made in HNBR, resists to every gas and fluid. Accepts damaged surface states. The applicator The distributor The elastomer

  10. Theory Strength transmission from the applicator to the ditributor and to the elastomer The STOPKIT analyzed by finite element

  11. Theory • The tightening system is made of : - A tigthening bar S - A nut bar E - 2 systems made of : a screw + a washer + an anti-vibration nut

  12. Theory • Application field :

  13. Temporary STOPKIT Implementation • Wear PPE • Check if the defect characteristics matches with the application field • Check the pipe temperature (from –20°C to +80°C) • Put the patch on the shorter belt (for the Stopkit multi-belts) • Check if the screws are covered with grease • Join the STOPKIT parts together : - Stopkit single-belt : put the metallic bars at the belt extremities - Stopkit multi-belts : assemble the n belts one with each other by using the « screw+washer+anti-vibration nut » system Stopkit single-belt Stopkit multi-belts

  14. Temporary STOPKIT Implementation • If possible, remove the coating of the pipe on 150x150mm and clean the surface • Install the Stopkit on the pipe next to the leaking point • Draw visual marks for the patch to be centered properly • Tighten gradually the screws. Always control the good positioning of the patch • Stop tightening at 40N.m • Check the tightening torque after 12 hours and 24 hours

  15. Permanent STOPKIT Implementation • Bristle blast 60mm of the surface on bothsides of the Temporary STOPKIT (Roughness ≥ 30 µm). • Remove the handle and the sheath over the belts • Degrease and clean fromdust the sticking area • Join the shells on the pipe and center them over the belt : - 2 halfshells for 4’’ and 6’’ pipes - modularshells for 8’’ to 56’’ pipes • Place the funnel on the highest part of the coffering

  16. Permanent STOPKIT Implementation • Place the Stopkit label into the translucent shell • Joining 4’’ and 6’’ shells : - Clip the shells taking care that the foam ensure a waterproofness • Joining 8’’ to 56’’ shells : - Join on the floor the modular shells. Let 10mm between the safety stop of the shells - Take care that the the foam ensure a waterproofness

  17. Permanent STOPKIT Implementation • Center the shells over the belt and join the two extremities • Install the two tightening belts on each side of the shells. Tighten until the foam is compressed homogeneously on the pipe • Resin injection : - Application temperature > +10°C - Mix part A of the resin until it is homogeneous. - Pour the hardener (Part B) into the resin (Part A) while mixing to get a homogenous resin (no marbling). • Pour the resin into the formwork by using the funnel. • Control that no leak appears • Let the resin curing 6 to 8 hours • Saw the funnel and remove the belts

  18. Movie

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