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0

Materials manufactured prior to what year are more susceptible to temper embrittlement than-current materials?

1972

1

ASME Section VIII- Had few limitations concerning brittle fracture prior to:

1987

2

In the crude unit, piping and vessels may have high metal loss from erosion-corrosion if the unit is exposed to:

Naphtenic acid

3

A crude distillation unit is using process CRUDE that has a 0.6% sulfur content. The process temperature is 600°. What is expected corrosion rate for a carbon steel piping system?

20 mpg

4

A crude distillation unit is using process crude that has a 0.6% sulfur content. The process temperature is 700°F. What is expected corrosion rate for an 18/8 stainless steel piping system?

0.4 mpg

5

Nicole alloys have The greatest susceptibility to chloride stress corrosion cracking when the nickel content is:

Between 8% to 12%

6

Nickel is highly resistant to chloride stress corrosion cracking when the nickel content in the alloy is above;

35%

7

A carbon steel caustic system has a 10% concentration of NaOH (Caustic). About what temperature is to stress relieving recommended?

176°

8

A carbon still caustic system has a 30% concentration of NaOH (Caustic). About what temperature is stress relieving recommended?

140°

9

A Carbon steel Caustic system has a 10% concentration of NaOH (caustic). Above what temperature is stress relieving no longer effective?

220°

10

A caustic system has a 30% concentration of NaOH (Caustic ). Above what temperature art nickel alloys recommended?

205°