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1. (WO2018144313) IN-SITU HIC GROWTH MONITORING PROBE
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CLAIMS

What is claimed is:

1. An intrusive probe system for flush insertion into a metal asset comprising: a probe body having a solid first end portion defined by an exposed surface configured to be exposed to a corrodent located within the metal asset, the probe body having an internal opening that terminates at a location spaced from the exposed surface;

an insert disposed within the internal opening of the probe so as to define a collection cavity defined between the insert and an inner wall of the probe body;

a diffusion barrier disposed along the inner wall of the probe body and formed of a material that is at substantially impermeable to a gas generated in the collection cavity by the corrodent so as to prevent passage of the gas from the collection cavity to the surrounding inner wall of the probe body;

a conduit in fluid communication with the collection cavity for receiving the gas generated by the corrodent; and

a pressure measuring device coupled to the conduit for measuring a pressure of the gas generated by the corrodent.

2. The probe system of claim 1 , wherein the corrodent is a liquid transported inside the metal asset, wherein atomic hydrogen is a by-product of corrosion of the metal asset due to contact between the corrodent and the metal asset.

3. The probe system of claim 1, wherein the gas generated by the corrodent in the collection cavity is molecular hydrogen gas.

4. The probe system of claim 1 , wherein a first end of the insert is in a flush abutting relationship to the solid end portion of the probe body, whereby the collection cavity is formed surrounding a side wall of the insert and spaced from an interface between the first end of the insert and the solid end portion.

5. The probe system of claim 1, wherein the insert comprises a cylindrical shaped filler rod and the collection cavity has an annular shape.

6. The probe system of claim 1, wherein the collection cavity extends longitudinally within the probe body to a distance from the exposed surface.

7. The probe system of claim 1, wherein the corrodent is a liquid transported inside the metal asset, wherein atomic hydrogen is a by-product of corrosion of the metal asset and the solid first end portion is formed of a material that permits diffusion of atomic hydrogen therethrough but has an HIC resistant microstructure.

8. The probe system of claim 1 , wherein the solid first end portion, including the exposed surface, is formed of a same metal grade as the metal asset.

9. The probe system of claim 1 , wherein the diffusion barrier is an oxide layer.

10. The probe system of claim 1 , wherein the diffusion barrier is an austenitic stainless steel sleeve.

11. The probe system of claim 1 , wherein the internal opening comprises a blind hole and a closed end of the internal opening is defined by the solid first end portion of the probe body.

12. The probe system of claim 1 , wherein the insert is formed of a material that has low or no hydrogen diffusivity properties.

13. The probe system of claim 1 , wherein the insert is formed of an austenitic stainless steel material.

14. The probe system of claim 1 , further including a probe cap which is coupled to an end of the probe body opposite the solid first end portion; an access fitting to which the probe body is coupled; and a coupling mount that is sealingly inserted into an access hole formed in the metal asset and to which the access fitting is coupled.

15. The probe system of claim 1 , wherein the probe cap includes outer threads that mate with inner threads formed in the access fitting.

16. The probe system of claim 1 , wherein the corrodent is a liquid transported inside the metal asset, wherein atomic hydrogen is a by-product of corrosion of the metal asset and the collection cavity comprises a HIC-simulation cavity in which diffusing atomic hydrogen permeates to and recombines within the collection cavity to form hydrogen gas and as hydrogen gas content in the collection cavity increases, the pressure in the collection cavity increases correspondingly, mimicking a HIC process, the pressure measuring device monitors the pressure within the collection cavity with a hydrogen sensor and determines corresponding hydrogen build-up rates.

17. The probe system of claim 16, wherein the pressure measuring device is configured to send an alert once the hydrogen build-up rate reaches a threshold value that is indicative of an increased chance of HIC or step-wise cracking (SWC) in the metal asset.

18. The probe system of claim 1 , wherein the diffusion barrier has a HIC-resistant microstructure.

19. The probe system of claim 1 , wherein an interface between one end of the insert and the solid end portion is resistant to atomic hydrogen passage, thereby causing the corrodent to pass into the collection cavity that surrounds a side wall of the insert.

20. The probe system of claim 1 , wherein the probe body is configured such that the exposed surface is placed flush relative to an inner wall of the metal asset which comprises a hollow pipe in which the corrodent forms.

21. An intrusive probe system for flush insertion into a metal asset comprising: a probe body having an access end portion with an exposed surface configured to be exposed to a corrodent located within the metal asset, the access end portion having a recessed portion formed opposite the exposed surface;

an insert having an access end and a base end, the access end being disposed adjacent recessed portion of the probe body so as to define a collection cavity that is fluid-tight and configured to collect the atomic hydrogen that permeates through the exposed surface of the probe body, whereby a gas is generated in the collection cavity by the atomic hydrogen , wherein the insert includes a through hole that passes therethrough and is open at both the access end and the base end such that the through hole is in fluid communication with the collection cavity; and

a pressure measuring device in fluid communication with the through hole of the probe body for measuring a pressure of the gas generated by the diffused atomic hydrogen within the collection cavity.

22. The probe system of claim 21, wherein the gas generated by the diffused atomic

hydrogen in the collection cavity is molecular hydrogen gas.

23. The probe system of claim 21, wherein the recessed portion is formed along a face of the access end portion opposite the exposed surface.

24. The probe system of claim 21, wherein the recessed portion has a stepped

construction including a landing portion against which the access end of the insert sealingly seats.

25. The probe system of claim 21, wherein the through hole is centrally located within the insert.

26. The probe system of claim 21, wherein the access end portion has a cylindrical shape.

27. The probe system of claim 21, further including a probe cap that is coupled to the base end of the insert, the probe cap having a through hole that axially aligns with the through hole formed in the insert to define a conduit to the pressure measuring device.

28. The probe system of claim 21, wherein the insert comprises a cylindrical shaped filler rod.

29. The probe system of claim 21, further including an O-ring coupled to the access end portion adjacent to the exposed surface.

30. The probe system of claim 21, wherein the access end portion is formed of a material that permits diffusion of atomic hydrogen therethrough but has an HIC resistant microstructure.

31. The probe system of claim 21, wherein the access end portion, including the exposed surface, is formed of a same metal grade as the metal asset.

32. The probe system of claim 21, wherein the insert is formed of an austenitic stainless steel material.

33. The probe system of claim 21, further including a probe cap that is coupled to the base end of the insert; an access fitting to which the probe body is coupled; and a coupling mount that is sealingly inserted into an access hole formed in the metal asset and to which the access fitting is coupled.

34. The probe system of claim 21, wherein the corrodent comprises atomic hydrogen and the collection cavity comprises a HIC-simulation cavity in which the diffused atomic hydrogen permeates to and recombines to form hydrogen gas and as hydrogen gas content in the collection cavity increases, the pressure in the collection cavity increases correspondingly, mimicking a HIC process, the pressure measuring device monitoring the pressure within the collection cavity with a hydrogen sensor and determines corresponding hydrogen build-up rates.

35. The probe system of claim 34, wherein the pressure measuring device is configured to send an alert once the hydrogen build-up rate reaches a threshold value that is indicative of an increased chance of HIC or step- wise cracking (SWC) in the metal asset.

36. A method for warning for hydrogen induced cracking in a metal asset, the method comprising:

inserting an intrusive probe system flush into the metal asset, the intrusive probe system having a probe body with an access end portion that has an exposed surface that is placed flush to an inner surface of the metal asset, the access end portion being formed of a material that permits diffusion of atomic hydrogen therethrough but has an HIC resistant microstructure, the probe body having a collection cavity for receiving the atomic hydrogen that passes through the access end portion;

allowing the atomic hydrogen to permeate the exposed surface;

generating molecular hydrogen in the collection cavity of the probe body;

measuring the pressure of the molecular hydrogen in the collection cavity; and

determining whether the measured pressure is greater than a value that is indicative of an increased risk of hydrogen induced cracking in the metal asset and if so, generating an alert.

37. The method of claim 37, further including the step of: scheduling advanced ultrasonic testing according to the measured risk of hydrogen induced cracking.

38. An in-line-inspection system for monitoring an inner surface of a metal asset

comprising:

an intrusive probe device for flush insertion into a metal asset comprising:

a probe body having a solid first end portion defined by an exposed surface configured to be exposed to a corrodent located within the metal asset, the probe body having an internal opening that terminates at a location spaced from the exposed surface;

an insert disposed within the internal opening of the probe so as to define a collection cavity defined between the insert and an inner wall of the probe body;

a diffusion barrier disposed along the inner wall of the probe body and formed of a material that is at substantially impermeable to a gas generated in the collection cavity by the corrodent so as to prevent passage of the gas from the collection cavity to the surrounding inner wall of the probe body;

a conduit in fluid communication with the collection cavity for receiving the gas generated by the corrodent;

a pressure measuring device coupled to the conduit for measuring a pressure of the gas generated by the corrodent;

a first communication module that is associated with the intrusive probe device;

a PIG device that is configured to travel along the inner surface of the metal asset, the PIG device including a second communication module that is configured to communicate with the first communication module to allow for data transfer between the intrusive probe device and the PIG device.