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True/False

1.Only Certified installers may install C/S for pipe repair?

   True

   False

2. The C/S System may be used to repair pipe with up to 80% wall loss subject to GRI Wrap?

   True

   False

3. The C/S system may be used to repair defects associated with general corrosion, dents and gouges?

   True

   False

4. The C/S system can be used to repair cracks?

   True

   False

5. The C/S System may be installed over any type of pipe coating?

   True

   False

6. To repair dents and gouges, all sharp edges must be removed?

   True

   False

7. A coal tar coating helps to cure the C/S adhesive?

   True

   False

8. Gasoline or diesel fuel may be used as a solvent?

   True

   False

9. The C/S must extend a minimum of 2" beyond both side of the defect area?

   True

   False

10. The C/S system is a permanent repair for external defects with up to 80% wall loss?

   True

   False

Multiple Choice

11. Which application is NOT suitable for the use of C/S?

   General Corrosion defects (80% max. through wall defect)

   "Blunt" mechanical defects

   Sharp Gouges

   Girth weld zone repair

   Defects associated with bends & elbows with centerline radius curvature > 3D

12. The key steps to a proper C/S installation are:

   Pipe preparation

   Applying Filler to the defect, all tented areas and the leading edge of the starter pad.

   Putting on plenty of adhesive

   Attaching the C/S to the starter pad and aligning the edges of the C/S

   Tightening down the C/S

   Sealing all edges

   All of the above

   A & B

   C, D & E

13. Which of the following defect type(s) are permanently repairable with C/S?

   Internal

   External

   Both

14. After the C/S is installed, the pipe will be restored to ___ of original strength in the repair zone.

   less than 80%

   80%

   at least 100%

15. ____ defects that are repaired with C/S are considered to be temporary.

   External

   Internal

16. ____ is the standard for the degree of cleanliness for the pipe preparation.

   Thumbnail test & anchor pattern   

   NACE #3 & an anchor pattern

   NACE # 1

   Wipe with Acetone

17. If you can not sandblast, which of the following is re commended to preparethe pipe for a C/S installation?

   A hand grinder with 24-80 grit sandpaper or disk and solvent wipe

   Burn coating with gasoline

   Only wire brush pipe surface

   Cut coating off with a knife and solvent wipe with Acetone

   None of the above

18. Coal tar may be used as a coating after the C/S adhesive has cured.

   True

   False

19. If the existing pipe coating is fusion-bonded epoxy, just abrade with sandpaper and solvent wipe with Acetone or MEK before applying the C/S.

   True

   False

20. The adhesive kits are provided in pre-portioned quantities with the quantity dependenton the size of the C/S to be installed.

   True

   False

21. To determine the quantity of activator to mix with the adhesive and filler, the following information is required:

   The type of existing pipe coating

   The relative humidity

   The ambient and pipe temperature

   None of the above

22. Prior to sealing the edges of the C/S with adhesive, all excess filler must be removed.

   True

   False

23. The C/S adhesive will typically cure in approximately____ hour(s).

   1/2

   1

   1-1/2

   2

24. To determine if the adhesive cure is sufficient for applying a pipe coating, the adhesive must reach a minimum hardness of ____.

   40 on a Shore A scale

   60 on a Shore A scale

   80 on a Shore A scale

   Granite

25. When installing multiple C/S's on a straight section of pipe, the maximum gap allowed between                      C/S's is ___ inch(es).

   1/4

   1/2

   1

   2

26. When repairing the corrosion associated with a girth weld, the following method(s) are acceptable:

   Grinding off the weld cap and installing a standard 8-wrap C/S according to standard procedures.

   Apply a 4-wrap C/S on both side of the weld, mold filler over the weld, then install a standard wrap C/S centered over the weld.

   Apply a standard 8-wrap C/S on both sides of the weld, mold filler over the weld, and then install a standard 8-wrap C/S centered over the weld.

   All of the Above

   A &B

   A & C

27. Cracks in the girth weld may be repaired with C/S.

   True

   False

28. When repairing corrosion associated with a girth weld, the following limits apply:

   Defect depth must not exceed 50% wall loss and may only encompass 30% of the pipe circumference

   Defect depth must not exceed 50% wall loss and may only encompass 50% of the pipe circumference

   Defect depth must not exceed 80% wall loss and may only encompass 50% of the pipe circumference

   None of the above

29. Single wrap molds should be used to mold the filler over the girth weld.

   True

   False

30. When making a bend repair, install the first unit in the middle of the defect and work outwards.

   True

   False

31. When making a bend repair, the maximum gap allowed between bands on the outside of the bend is:

   1/4

   1/2

   3/4

   1

32. When making a bend repair, additional filler should be ordered and the material must be applied to both the inside and outside of the bend.

   True

   False

33. A standard width C/S can be used to repair any type of bend regardless of the bend radius.

   True

   False

34. What is the "edge effect"?

   The nervousness experienced by the installer

   The re-enforcement provided by the C/S extends beyond the physical edge of the C/S

   The pipe section immediately beyond the physical edge of the C/S is weaker than any other section of the pipe.

   All of the above.

35. The C/S filler material is_____.

   Easily substituted with Bondo putty

   A high compressive-strength material

   Placed in the defect areas, all tented areas and on the leading edge of the starter pad

   A load transfer material which will, when cured, provide a load transfer path to the C/S

   All of the above

   B, C & D

36. The C/S restores the ___ of the pipe.

   Axial Strength

   Compressive Strength

   "Hoop" Strength

37. When dealing with condensing pipe, the following step(s) should be taken:

   Solvent wipe the pipe surface, allow the solvent to flash and quickly attach the starter pad or use contact spray adhesive, then proceed with attaching the starter pad.

   After attaching the starter pad, solvent wipe the pipe surface prior to applying adhesive.

   A & B

38. When cold temperature exist and frost is present on the pipe surface, the following step(s) should be taken:

    Adjust activator quantity per charts for the adhesive and filler

   Solvent wipe the pipe surface, allow the solvent to flash and quickly attach the starter pad or use contact spray adhesive, then proceed with attaching the starter pad.

   After attaching the starter pad, solvent wipe, the pipe surface prior to applying the adhesive

   All of the above.

39. A pipe coating is recommended on the outside of a cured C/S.

   True

    False

40. The only two solvents allowed during pipe preparation & ancillary cleaning of the C/S are

  &