Chapter 11 - Surface Preparation Instruments

Question 0

If inspection is to be effective with regards to soluble salts, the specification should very clearly state:

Answer 0

Limits to be accepted
Specific salts to be limited
Test method to be used
Frequency of testing
Locations in which tests should be administered

Question 1

Types of Soluble Salt Contamination include:

Answer 1

Chlorides
Sulfate
Nitrates

Question 2

Test for soluble salts include:

Answer 2

Bresle Patch
Sleeve Test
Soluble Salt Meters
Conductivity Meters

Question 3

Depth of surface profile can be evaluated by several methods:

Answer 3

ISO Comparator
Replica Tape
Digital Profile Gauge

Question 4

The ISO Comparator grades may be recorded:

Answer 4

Finer-than-Fine Grade
Fine Grade
Medium Grade
Coarse Grade 
Coarser-than-Coarse Grade

Question 5

The two types of replica tape are commonly used:

Answer 5

Coarse- for 20 to 50 um(0.8 to 2.0 mils)

X-coarse- for 37 to 112 um ( 1.5 to 4.5 mils)

Question 6

List the standards for using the replica tape

Answer 6

ASTM D 4417 Method C

NACE SP 0287-2002

Question 7

When using replica tape common errors include:

Answer 7

Variation in point-to-point profile over surface being tested

The presence of particles of dirt on either the replica tape or gauge

Gauge Accuracy

The rubbing or burnishing technique