Systems, methods and devices for strengthening fluid system components using radiation-curable composites
View Patent ↗Methods are provided for strengthening (e.g., repairing, structurally reinforcing, etc.) a fluid-system component by installing, as a circumferential wrap or a patch, a radiation-curable composite laminate. Kits including composite repair materials and equipment for implementing the methods are also provided. Examples of fluid-system components that may be strengthened include pipework, pipelines, transmission pipelines, distribution pipelines, gathering lines, oil risers, gas risers, process piping, girth welds on pipelines or vessels, tanks, vessels, elbows, tees, flanges, and high-pressure injection lines. An approach where, prior to curing, the precursor to the composite laminate comprises a glass fabric, a carbon fabric, or any combination(s) thereof, pre-impregnated with an uncured epoxy resin, an uncured epoxy acrylate resin, or a mixture thereof, is used; curing is performed via electron beam irradiation; and the installation and curing procedures can be automated to the maximum extent possible, in exemplary embodiments of the present disclosure.
1. A method for strengthening a component in a fluid system, the method comprising:
providing a composite laminate with a fabric carrier including a continuous reinforcing fiber, the fabric carrier being pre-impregnated with a reactive precursor chemically configured to activate upon exposure to artificial radiation, wherein the artificial radiation is selected from the group consisting of microwaves, an electron beam, x-rays, gamma-rays, or any combination thereof;
providing an automated wrapping device configured to automatically apply the composite laminate on a layer-by-layer basis to the fluid-system component at a water depth between 1 foot and 20,000 feet;
placing the composite laminate over a portion of the fluid-system component at a water depth between 1 foot and 20,000 feet via the automated wrapping device; and
applying the artificial radiation to the fabric carrier at a water depth between 1 foot and 20,000 feet such that the reactive precursor is cured thereby creating a load-bearing repair implement from the composite laminate.
2. The method of claim 1 , further comprising transporting the composite laminate and a device for the applying of artificial radiation to the fabric carrier to a deep-sea location via a remotely operated vehicle (ROV).
3. The method of claim 2 , wherein the placing the composite laminate and the applying artificial radiation to the fabric carrier is carried out via the ROV.
4. The method of claim 1 , wherein the reactive precursor comprises an epoxy, an acrylate, a urethane, or any mixture or combinations thereof.
5. The method of claim 1 , wherein the artificial radiation is generated by an electron beam, the electron beam possessing an energy ranging from approximately 0.15 to 0.30 megaelectron volts (MeV).
6. The method of claim 1 , further comprising thermal post-curing the composite laminate subsequent to the applying of artificial radiation to the fabric carrier.
7. The method of claim 1 , wherein the material of the fluid-system component comprises steel, concrete, or a combination thereof.
8. The method of claim 1 , wherein the reactive precursor is further chemically configured to activate at water depths of approximately 1 to 20,000 feet.
9. The method of claim 1 , wherein the maximum use temperature of the composite laminate is approximately 68 to 176° F.
10. The method of claim 1 , wherein the load-bearing repair implement formed from the composite laminate exhibits a tensile strength of approximately 15,000 to 150,000 psi in at least one principal axis direction and an impact resistance of at least approximately 80 joules.
11. The method of claim 1 , wherein the load-bearing repair implement formed from the composite laminate exhibits a tensile strength of at least approximately 2,500 psi in at least one principal axis direction.
12. The method of claim 1 , wherein the load-bearing repair implement formed from the composite laminate exhibits a tensile strength of at least approximately 15,000 psi in both principal axis directions.
13. The method of claim 1 , wherein the load-bearing repair implement formed from the composite laminate exhibits a tensile strength of at least approximately 50,000 psi in at least one principal axis direction.
14. The method of claim 4 , wherein the reactive precursor further comprises an additional ingredient including a photoinitiator, a catalyst, a stabilizer, or any mixture or combinations thereof.
15. The method of claim 1 , wherein the fluid system component comprises pipework, a pipeline, or any combination thereof.
16. The method of claim 1 , wherein the continuous reinforcing fiber is selected from the group consisting of a glass fiber, a carbon fiber, or any combination thereof.
17. The method of claim 1 , wherein the reinforcing fiber is arranged in a uniaxial orientation, a biaxial orientation, or a combination thereof.
18. The method of claim 1 , wherein the reactive precursor is further chemically configured to activate under a water pressure of approximately 2.2 to 4,400pounds per square inch (psi).
19. The method of claim 1 , wherein the reactive precursor is further chemically configured to activate at temperatures of approximately 5° F. and higher.
20. The method of claim 1 , wherein the reactive precursor is further chemically configured to activate at temperatures ranging from approximately 0 to 75° F.
21. A method for strengthening a component in a fluid system, the method comprising:
providing a composite laminate with a fabric carrier including a continuous reinforcing fiber, the fabric carrier being pre-impregnated with a reactive precursor chemically configured to activate upon exposure to artificial radiation, wherein the artificial radiation is selected from the group consisting of microwaves, an electron beam, x-rays, gamma-rays, or any combination thereof;
providing an automated wrapping device configured to automatically apply the composite laminate on a layer-by-layer basis to the fluid-system component;
placing the composite laminate over a portion of the fluid-system component via the automated wrapping device in an environment with a temperature below approximately 50° F.; and
applying the artificial radiation to the fabric carrier in the environment with the temperature below approximately 50° F. such that the reactive precursor is cured thereby creating a load-bearing repair implement from the composite laminate.