API 570 - Closed Book Combined Exam Set Questions With Revised Correct Detailed Answers
6 views 0 purchase
Course
API 570
Institution
API 570
API 570 - Closed Book Combined
Exam Set Questions With Revised
Correct Detailed Answers
1) Which of the following NDE techniques can be effective in
detecting and sizing Caustic Stress Corrosion Cracks? - API 571
UT angle-beam
2) A carbon steel caustic system has a 10% concentration...
API 570 - Closed Book Combined
Exam Set Questions With Revised
Correct Detailed Answers
1) Which of the following NDE techniques can be effective in
detecting and sizing Caustic Stress Corrosion Cracks? - API 571
ANSWER UT angle-beam
2) A carbon steel caustic system has a 10% concentration of NaOH
(Caustic). Above what temperature is stress-relieving
recommended? - API 571
ANSWER 176 °F
3) A carbon steel caustic system has a 30% concentration of NaOH
(caustic). Above what temperature is stress-relieving
recommended? - API 571
ANSWER 140 °F
4) A carbon steel caustic system has a 10% concentration of NaOH
(caustic). above what temperature is stress-relieving no longer
effective? - API 571
ANSWER 220 °F
, 5) A caustic system has a 30% concentration of NaOH (caustic).
Above what temperature are nickel alloys recommended? - API
571
ANSWER 207 °F
6) Chloride Stress corrosion cracking (Chloride SCC) can cause cracks
that normally initiate: - API 571
ANSWER On the surface of 300 Series SS
7) Which of the following is Not a factor in the chloride SCC? - API
571
ANSWER Pressure
8) Which of the following can contribute to chloride SCC? - API 571
ANSWER Dissolved Oxygen
9) Heat transfer equipment can provide a way for chlorides to: - API
571
ANSWER concentrate
10) Chloride SCC usually occurs at temperatures above: - API
571
ANSWER 140 °F
11) Chloride SCC usually occurs at a pH: - API 571
ANSWER above 2 pH.
12) which of the following components is most likely to crack
from chloride SCC in a chloride environment? - API 571
ANSWER Expansion bellows
,Nickel alloys have the greatest susceptibility to Chloride Stress
Corrosion Cracking when the nickel content is between: - API 571
ANSWER Between 8% to 12%.
Nickel is highly resistant to Chloride SCC when the nickel content in the
alloy is above: - API 571
ANSWER 35%
Which of the following are common places where chloride SCC has
been known to occur? - API 571
ANSWER Crude Tower Overhead Condenser, Boiler Drain Lines
External Chloride SCC has been caused by Chlorides in: - API 571
ANSWER Wet Insulation.
The fracture surfaces from Chloride SCC have a(n): - API 571
ANSWER Brittle appearance.
when insulating 300 SS equipment which of the following steps are
important? - API 571
ANSWER Add a coating to the equipment prior to insulating.
Which of the following NDE methods is the LEAST useful in detecting
Chloride Stress Corrosion Cracking - API 571
ANSWER RT
CUI is caused by: - API 571
Water trapped under insulation or fireproofing.
Concerning CUI which of the following are true? - API 571
ANSWER Corrosion rate increases as temperature increases up to
where water rapidly vaporizes
, CUI is a possibility on insulated Carbon Steel equipment that operates
between: - API 571
ANSWER 10 to 350 °F
CUI is a possibility on insulated Austenitic 300 Series SS equipment that
operates between: - API 571
ANSWER 140 to 350 °F
CUI is a possibility on insulated Duplex SS equipment that operates
between: - API 571
ANSWER 280 to 350 °F
CUI is a possibility on insulated 400 Series SS equipment that operates
between: - API 571
ANSWER 10 to 350 °F
CUI occuring on 300 Series and Duplex SS equipment actually is caused
by what type of corrosion mechanism? - API 571
ANSWER Chloride Stress Corrosion Cracking
CUI is an inspection concern for insulated vessels that operate at 500 °F
and: - API 571
ANSWER is in an intermittent service.
Which of the following insulated equipment is most likely to experience
CUI? - API 571
CS vessel with operating temp at 600 °F but is in an intermittent
service.
CUI can be more aggressive when: - API 571
Chlorides leach out of the insulation
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller NURSINGDICTIONARY. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $17.99. You're not tied to anything after your purchase.
