Code Compliance Flashcards

Under SSPC-PA 2, how many spot measurements are normally required in each 100 ft² (10 m²) area to check dry film thickness?

Answer: 5

SSPC-PA 2 calls for five spot measurements spaced across each 100 ft² area.

Under SSPC-PA 2, a single 'spot measurement' is the average of at least how many gauge readings taken in a small circle?

Answer: 3

Each spot measurement averages at least three gauge readings taken within a 1.5-inch (4 cm) diameter circle.

Under the default SSPC-PA 2 restriction level, individual spot measurements may fall within what range of the specified DFT?

Answer: 80% of the minimum to 120% of the maximum

Default Level 3 allows spot measurements from 80% of the specified minimum to 120% of the specified maximum, while area averages must meet the specified range.

Which ASTM standard covers nondestructive measurement of dry film thickness of nonmagnetic coatings on ferrous metals, including gauge verification?

Answer: ASTM D7091

ASTM D7091 covers DFT measurement and gauge accuracy verification for coatings on ferrous and nonferrous metals.

A bridge owner needs proof that a contractor can remove hazardous lead paint properly. Which SSPC certification addresses this?

Answer: SSPC-QP 2

SSPC-QP 2 certifies contractors for removing hazardous industrial coatings, while QP 1 covers field application.

Coatings for the interior of a potable water storage tank must typically be certified to which standard?

Answer: NSF/ANSI/CAN 61

NSF/ANSI/CAN 61 certifies that materials in contact with drinking water do not leach harmful contaminants.

Which method in ASTM D4417 uses replica tape to measure the profile of a blast-cleaned steel surface?

Answer: Method C

ASTM D4417 Method C uses replica tape; Method A uses a visual comparator and Method B a depth micrometer.