Ch. 18 Pipeline Mainline and Field Joint Coatings

Question 1

Construction materials may include, but are not limited to:

Answer 1

1. Steel 2. Aluminum 3. Stainless steel 4. Plastic

Question 2

The majority of the pipes coated at a coatings facility or plant and shipped to the site are called

Answer 2

Plant applied

Question 3

Typical plant-applied coatings include

Answer 3

1. Two layer poly 2. 3 layer poly 3. FBE 4. Coal tar enamel 4. Asphalt 5. Concrete 6. Asphalt

Question 4

Polyethelene (PE) can be extruded by:

Answer 4

side extruded or crosshead

Question 5

The FBE application process includes

Answer 5

1. Preheat 2. Grit/shot blast to NACE #2 SSPC-SP10 3. Heat pipe 4. Apply coating 5. Cure coating 6. Quench 7. Stencil

Question 6

The advantages of CTE pipeline coatings include

Answer 6

1. Ease of application 2. Long life

Question 7

The disadvantages of CTE pipeline coatings include

Answer 7

1. Environmental concerns 2. Subject to corrosion and damage from soil stress

Question 8

The general application process for CTE includes

Answer 8

1. Prime pipe 2. Apply CTE dope 3. Wrap w/glass fiber mat 4. Apply 2nd coat of CTE dope 5. Apply 2nd layer of glass met 6. Apply outer wrap of CTE impregnated glass fiber felt. 7. Cool

Question 9

Concrete coating characteristics include

Answer 9

1. Good for wetlands 2. Can be applied in may thicknesses

Question 10

Pipeline coating field joints include

Answer 10

1. Heat shrink sleeves 2. Insulation 1/2 shells 3. Liquid epoxies 4. Cold applied tape 5. Hot applied tape 6. Fusion bonded epoxy 7. Wax tape

Question 11

Non-destructive tests for heat-shrink sleeves include

Answer 11

1. UT 2. Physical inspection 3. Holiday inspection

Question 12

Destructive tests for heat-shrink sleeves include

Answer 12

Peel test

Question 13

The following materials can be used to repair FBE

Answer 13

1. Epoxy FBE melt sticks 2. LIquid epoxy 3. Repair patches