Untitled Deck

Question 1

What does SSPC-PA 9 cover? Measurement of Dry Coating Thickness on Cementitious Substrates (Concrete) and other non-metallic surfaces using ultrasonic gages.

Question 2

What is a ‘homogeneous’ coating according to SSPC-PA 9? A coating of uniform composition throughout that does not contain large

Answer 2

solid particles like sand.

Question 3

What is the required frequency of measurements for SSPC-PA 9? 5 spot measurements per 100 sq. ft. (9 sq. m).

Question 4

How many gage readings make up a single ‘spot measurement’ in SSPC-PA 9? At least 3 gage readings within a 6-inch (15 cm) diameter circle.

Question 5

What is the minimum distance between gage readings within a spot? At least 2 inches (5 cm).

Question 6

Define ‘Verification’ in SSPC-PA 9. An accuracy check performed by the user at the start and end of each shift using known reference standards.

Question 7

Define ‘Calibration’ in SSPC-PA 9. A process typically performed by the manufacturer or a qualified lab that results in a Certificate of Calibration.

Question 8

Define ‘Adjustment’ in SSPC-PA 9. Aligning gage thickness readings to a known sample to improve accuracy on a specific surface (sound velocity adjustment).

Question 9

What are the tolerance limits for Level 3 (Default) in SSPC-PA 9? Spot measurements must be at least 75% of the minimum and no more than 125% of the maximum specified thickness.

Question 10

What is Restriction Level 1 in SSPC-PA 9? The most restrictive level; does not allow any deviation from specified minimum and maximum thickness.

Question 11

What is Restriction Level 4 in SSPC-PA 9? The least restrictive level; allows 75% of minimum thickness and has no maximum thickness restriction.

Question 12

True or False: According to SSPC-PA 9

Answer 12

individual gage readings can be lower than the specified thickness. True. Individual readings can overrun or underrun as long as the spot measurement (average) is within limits.

Question 13

What is the measurement frequency for structures 30–100 m² (323–1

Answer 13

076 sq. ft.)? Three 10 m² areas are arbitrarily selected and measured.

Question 14

What should be done with couplant after measurement? It should be removed from the coating

Answer 14

especially if another coat is to be applied.

Question 15

What is the measurement range for most ultrasonic gages? Approximately 0.3 mils to 300 mils (8 µm to 7.6 mm).

Question 16

What are the three main steps in the hot-dip galvanizing process? Surface preparation

Answer 16

galvanizing

Question 17

List four common standards for hot-dip galvanizing. CAN/CSA G 164

Answer 17

ISO 1461

Question 18

Which ASTM standard covers zinc coating on iron and hardware products (fasteners) that are centrifuged after galvanizing? ASTM A 153/A 153M.

Question 19

Which ASTM standard covers the repair of damaged and uncoated areas of hot-dip galvanized coatings? ASTM A 780 (Standard for repair).

Question 20

Which ASTM standard covers the preparation of galvanized surfaces for painting? ASTM D 6386.

Question 21

What is ‘heavy galvanizing’ also known as? Batch

Answer 21

heavy duty

Question 22

What is ‘light galvanizing’ also known as? Continuous

Answer 22

I.G (in-line galvanizing)

Question 23

What is a coating survey? A process to gather info on the performance of previously coated protective systems on assets (bridges

Answer 23

platforms

Question 24

True or False: A coating survey is the same as a corrosion survey. False. Corrosion surveys go beyond the scope of coatings system performance.

Question 25

List four primary reasons coating surveys are performed. 1. Plan maintenance 2. Prioritize work 3. Budget 4. Legal compliance.

Question 26

List four types of individuals who may be qualified to perform coating surveys. 1. NACE O-CAT/S-CAT 2. NACE Coating Specialist 3. AMPP Level 3 4. Maintenance Engineer.

Question 27

What does O-CAT stand for? Offshore Corrosion Assessment Training.

Question 28

What does S-CAT stand for? Shipboard Corrosion Assessment Training.

Question 29

What is the first and most important step in conducting a coating survey? Get a clear understanding of the scope (objective and goals).

Question 30

What should a surveyor do if they notice severe metal loss? Pass info to the correct people; do not make blanket statements like 'must be replaced'.

Question 31

What are three benefits of database software programs used for coating surveys? 1. Prioritize work 2. Rapid data access 3. Calculate condition over time.

Question 32

List the common special metal substrates mentioned. Copper

Answer 32

Aluminum

Question 33

List the common non-metal substrates mentioned. Wood and Polymeric materials (Plastics).

Question 34

List five reasons wood is painted. Decoration

Answer 34

Protection

Question 35

List three reasons special substrates are painted. Enhanced corrosion resistance

Answer 35

Decoration

Question 36

What issue must an inspector address regarding oxide films on special substrates? The presence of oxide films (not all are tightly adherent).

Question 37

Which special substrates can have tightly adherent oxide films? Stainless steel

Answer 37

Nickel

Question 38

List four surface preparation methods mentioned for special substrates. Scrubbing

Answer 38

Waterjetting

Question 39

What is one type of primer that may be used on oxide films? A very wet primer.

Question 40

List four ASTM and SSPC standards mentioned for preparing special substrates. ASTM D 1730

Answer 40

ASTM D 1731

Question 41

List the inspection criteria for special substrates. 1. Understand spec 2. Check PDS 3. Ensure prep/application 4. Inspect coats 5. Keep records.

Question 42

What challenges should you anticipate when inspecting a stainless steel substrate? A

Answer 42

B

Question 43

On which substrate would you expect to encounter a tightly adherent oxide film? D (Anodized aluminum).

Question 44

Which of the following are some of the primary reasons for coating wood? A

Answer 44

B

Question 45

What substrates should be protected from contact with highly alkaline materials? A

Answer 45

B (Zinc and Aluminum).

Question 46

Outline the steps to perform a simple coating survey. 1. Scope 2. Team 3. Plan 4. Standards 5. Data format 6. Tasks 7. Evaluate 8. Gather 9. Summarize 10. Maint plan 11. Reports 12. Final.

Question 47

Which of the following are the primary reasons for performing coating surveys? A

Answer 47

B