API 653 Recertification Quiz with 100% Correct
Answers | Latest Version | Expert Verified | Ace the
Test
When installing a new nozzle in a tank of unknow material, what stress value
should be used to calculate the required shell thickness and reinforcement? -
ANSWER -20,000 lbf/in2
In regards to underside corrosion on tank bottoms, the corrosion rate of steel in a
wet environment. - ANSWER -may double with every 18 °F increase in
temperature above 77 °F.
Grade 350W/50W is acceptable for tank plate to a maximum thickness of: -
ANSWER -45mm (1.75in) if fully killed and made to a fine grain practice.
If an RBI assessment has been conducted and the tank has a release prevention
barrier, the maximum initial inspection interval is: - ANSWER -25 years
As an alternative to the procedures in API 653 for the evaluation of any thinning
of the tank shell below minimum required wall thickness may be evaluated for
continued service using which code? - ANSWER -API RP 579, section 4, 5 or 6.
When welding on a tank shell constructed of Group I steel that is greater than 1.5
inches thick below what minimum metal temperature ?preheat? - ANSWER -
200°F
, When evaluated an existing temperature services tank, which has a successful
service history of operation but was not originally designed and constructed to the
requirement of API 650, appendix M, which condition temperature has to be used?
- ANSWER -The max Operating Temperature shall not exceed the temperature at
which the tank has successfully operated in the pass.
Flange material used for tank repair and alteration shall meet the minimum
requirements for the material specifications according to: - ANSWER -The as built
standard
which is an advantage of thick film UN-REINFORCED linings ? - ANSWER -
Fast curing and can be put back in service after 24 hours at normal ambient
temperature.
The perimeter welds on a welded-on patch plate in the critical zone should be ? -
ANSWER -Two-pass and examined visually and by either MP or PT.
Existent welds on a tank shell are found to e closer than allowed by API 650 (7th
Edition). Under what conditions can these welds be considered to be acceptable for
continued service? - ANSWER -Examined by MP inspection with no rejectable
indications.
The requirements of which standard shall be considered in the evaluation and
alteration to the tank roof and roof-to-shell junction ? - ANSWER -Current
applicable standard
Answers | Latest Version | Expert Verified | Ace the
Test
When installing a new nozzle in a tank of unknow material, what stress value
should be used to calculate the required shell thickness and reinforcement? -
ANSWER -20,000 lbf/in2
In regards to underside corrosion on tank bottoms, the corrosion rate of steel in a
wet environment. - ANSWER -may double with every 18 °F increase in
temperature above 77 °F.
Grade 350W/50W is acceptable for tank plate to a maximum thickness of: -
ANSWER -45mm (1.75in) if fully killed and made to a fine grain practice.
If an RBI assessment has been conducted and the tank has a release prevention
barrier, the maximum initial inspection interval is: - ANSWER -25 years
As an alternative to the procedures in API 653 for the evaluation of any thinning
of the tank shell below minimum required wall thickness may be evaluated for
continued service using which code? - ANSWER -API RP 579, section 4, 5 or 6.
When welding on a tank shell constructed of Group I steel that is greater than 1.5
inches thick below what minimum metal temperature ?preheat? - ANSWER -
200°F
, When evaluated an existing temperature services tank, which has a successful
service history of operation but was not originally designed and constructed to the
requirement of API 650, appendix M, which condition temperature has to be used?
- ANSWER -The max Operating Temperature shall not exceed the temperature at
which the tank has successfully operated in the pass.
Flange material used for tank repair and alteration shall meet the minimum
requirements for the material specifications according to: - ANSWER -The as built
standard
which is an advantage of thick film UN-REINFORCED linings ? - ANSWER -
Fast curing and can be put back in service after 24 hours at normal ambient
temperature.
The perimeter welds on a welded-on patch plate in the critical zone should be ? -
ANSWER -Two-pass and examined visually and by either MP or PT.
Existent welds on a tank shell are found to e closer than allowed by API 650 (7th
Edition). Under what conditions can these welds be considered to be acceptable for
continued service? - ANSWER -Examined by MP inspection with no rejectable
indications.
The requirements of which standard shall be considered in the evaluation and
alteration to the tank roof and roof-to-shell junction ? - ANSWER -Current
applicable standard
