1
Q
Which of the following materials is NOT subjected to Caustic Corrosion
A
CS
Chromes
300 Series SS
Nickel Alloys –
2
Q
Which of the following is not a usage for Caustic in the petrochemical Industry
A
Added to Boiler Feedwater in small amounts Used to Neutralize Used as a Reactant Used to remove Sulfur Compounds used to decrease pH---
3
Q
In order for caustic corrosion to occur in routine equipment there must be a:
A
concentrating method to build the Caustic’s strength
4
Q
Caustic corrosion normally appears as:
A
Localized metal loss often with grooving
5
Q
Caustic corrosion starts to cause uniform corrosion of CS when the process temp exceeds:
A
175 F
6
Q
In steam systems, Caustic Corrosion is best prevented by:
A
Proper Design
7
Q
What materials should be used with high strength caustic solutions when the process temp is above 150F
A
High nickel alloys
API 571
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