Study Guide API 653 Exam Questions
With Correct Answers
API |653 |covers |which |of |the |following |activities?
a) |Tank |Design
b) |Tank |Fabrication
c) |Tank |Operation
d) |Tank |Reconstrusction |- |CORRECT |ANSWER✔✔-d) |Tank |Reconstruction
Corroded |roof |plates |on |a |fixed-roof |tank |shall |NOT |be |less |than:
a) |Designers |Recommendation
b) |0.090" |thick |averaged |over |any |100 |sqin.
c) |0.500" |at |any |point.
d) |tmin |averaged |over |critical |length |"L" |Dimension |- |CORRECT |ANSWER✔✔-b) |0.90" |thick |
averaged |over |any |100sqin.
A |new |nameplate |shall |be |added |to |a |tank |after:
a) |either |major |alterations |or |tank |reconstructions.
b) |either |major |alterations |or |tank |reconstruction.
c) |it |has |been |relocated.
d) |it |has |been |reconstructed. |- |CORRECT |ANSWER✔✔-d) |it |has |been |reconstructed.
,For |a |reconstructed |tank, |the |shell |thickness |readings |used |to |determine |the |allowable |liquid |
height |must |have |been |taken |within |the |last:
a) |30 |days.
b) |60 |days.
c) |90 |days.
d) |180 |days. |- |CORRECT |ANSWER✔✔-d) |180 |days.
The |impressed |current |sources |of |a |cathodic |protection |system |should |be |checked |(to |see |if |
still |operating) |every:
a) |month
b) |two |months.
c) |six |months.
d) |year. |- |CORRECT |ANSWER✔✔-b) |two |months
Which |of |the |following |is |part |of |the |"critical |zone"?
a) |the |bottom |within |3" |of |any |roof |support |column
b) |the |bottom |within |3" |of |the |shell
c) |the |bottom |3" |of |the |lowest |shell |course
d) |the |frangible |roof |to |shell |weld |- |CORRECT |ANSWER✔✔-b) |the |bottom |within |3" |of |the |
shell
A |tank |is |20 |years |old |and |has |a |bottom |thickness |of |0.170" |original |bottom |thickness |was |
0.250. |determine |the |interval |for |the |next |internal |inspection?
,a) |10 |years
b) |15 |years
c) |17.5 |years
d) |20 |years |- |CORRECT |ANSWER✔✔-c) |17.5 |years
Widely |catered |pits |in |a |tank |shell |can |be |ignored |if |the |extent |of |the |pitting |does |not |exceed:
a)2 |pits |in |any |8 |inches.
b) |1 |inch |in |any |8 |inches.
c) |2 |inches |in |any |8 |inches.
d) |1 |inch |in |any |vertical |8 |inches.
e) |2 |inch |in |any |vertical |8 |inches |- |CORRECT |ANSWER✔✔-e) |2 |inch |in |any |vertical |8 |inches.
Which |of |the |following |is |an |advantage |of |the |galvanic |cathodic |protection |system?
a) |Annual |maintenance |costs |are |generally |low.
b) |A |single |anode |covers |large |surface |areas
c) |the |Effective |life |of |the |anodes |is |usually |50 |years |.
d) |It |is |easy |to |test |the |system's |effectiveness. |- |CORRECT |ANSWER✔✔-a) |annual |maintenance
|costs |are |generally |low
Hot |taps |are |permitted:
a) |anywhere |on |the |tank.
b) |anywhere |on |the |tank |provided |the |tank |is |gas |free.
c) |only |in |the |liquid |section |of |tank.
, d) |only |in |the |liquid |section |of |tank |provided |the |product |flash |point |is |above |250*F. |- |
CORRECT |ANSWER✔✔-c) |only |in |the |liquid |section |of |tank.
An |API |653 |hydrotest |shall |be |held |for |at |least:
a) |4 |hours.
b) |8 |hours
c) |12 |hours
d) |24 |hours |- |CORRECT |ANSWER✔✔-d) |24 |hours
During |a |tank |repair, |if |API |653 |conflicts |with |the |design |standard, |which |standard |governs?
a) |most |stringent |standard
b) |design |standard |
c) |API |653
d) |either |standard |based |on |the |inspector"s |judgment |- |CORRECT |ANSWER✔✔-c) |API |653
Which |of |the |following |activities |is |considered |an |alteration |in |API |653?
a) |the |addition |of |a |shell |lap |patch
b) |the |addition |of |a |floor |lap |patch
c) |the |addition |of |a |shell |insert |patch
d) |the |addition |of |16 |NPS |nozzle |
e) |the |addition |of |a |tank |bottom |lining |- |CORRECT |ANSWER✔✔-d) |the |addition |of |16 |NPS |
nozzle
Repaired |or |replaced |bottom |welds |shall |be |examined |with |either |a |vacuum |box |or |by |using:
With Correct Answers
API |653 |covers |which |of |the |following |activities?
a) |Tank |Design
b) |Tank |Fabrication
c) |Tank |Operation
d) |Tank |Reconstrusction |- |CORRECT |ANSWER✔✔-d) |Tank |Reconstruction
Corroded |roof |plates |on |a |fixed-roof |tank |shall |NOT |be |less |than:
a) |Designers |Recommendation
b) |0.090" |thick |averaged |over |any |100 |sqin.
c) |0.500" |at |any |point.
d) |tmin |averaged |over |critical |length |"L" |Dimension |- |CORRECT |ANSWER✔✔-b) |0.90" |thick |
averaged |over |any |100sqin.
A |new |nameplate |shall |be |added |to |a |tank |after:
a) |either |major |alterations |or |tank |reconstructions.
b) |either |major |alterations |or |tank |reconstruction.
c) |it |has |been |relocated.
d) |it |has |been |reconstructed. |- |CORRECT |ANSWER✔✔-d) |it |has |been |reconstructed.
,For |a |reconstructed |tank, |the |shell |thickness |readings |used |to |determine |the |allowable |liquid |
height |must |have |been |taken |within |the |last:
a) |30 |days.
b) |60 |days.
c) |90 |days.
d) |180 |days. |- |CORRECT |ANSWER✔✔-d) |180 |days.
The |impressed |current |sources |of |a |cathodic |protection |system |should |be |checked |(to |see |if |
still |operating) |every:
a) |month
b) |two |months.
c) |six |months.
d) |year. |- |CORRECT |ANSWER✔✔-b) |two |months
Which |of |the |following |is |part |of |the |"critical |zone"?
a) |the |bottom |within |3" |of |any |roof |support |column
b) |the |bottom |within |3" |of |the |shell
c) |the |bottom |3" |of |the |lowest |shell |course
d) |the |frangible |roof |to |shell |weld |- |CORRECT |ANSWER✔✔-b) |the |bottom |within |3" |of |the |
shell
A |tank |is |20 |years |old |and |has |a |bottom |thickness |of |0.170" |original |bottom |thickness |was |
0.250. |determine |the |interval |for |the |next |internal |inspection?
,a) |10 |years
b) |15 |years
c) |17.5 |years
d) |20 |years |- |CORRECT |ANSWER✔✔-c) |17.5 |years
Widely |catered |pits |in |a |tank |shell |can |be |ignored |if |the |extent |of |the |pitting |does |not |exceed:
a)2 |pits |in |any |8 |inches.
b) |1 |inch |in |any |8 |inches.
c) |2 |inches |in |any |8 |inches.
d) |1 |inch |in |any |vertical |8 |inches.
e) |2 |inch |in |any |vertical |8 |inches |- |CORRECT |ANSWER✔✔-e) |2 |inch |in |any |vertical |8 |inches.
Which |of |the |following |is |an |advantage |of |the |galvanic |cathodic |protection |system?
a) |Annual |maintenance |costs |are |generally |low.
b) |A |single |anode |covers |large |surface |areas
c) |the |Effective |life |of |the |anodes |is |usually |50 |years |.
d) |It |is |easy |to |test |the |system's |effectiveness. |- |CORRECT |ANSWER✔✔-a) |annual |maintenance
|costs |are |generally |low
Hot |taps |are |permitted:
a) |anywhere |on |the |tank.
b) |anywhere |on |the |tank |provided |the |tank |is |gas |free.
c) |only |in |the |liquid |section |of |tank.
, d) |only |in |the |liquid |section |of |tank |provided |the |product |flash |point |is |above |250*F. |- |
CORRECT |ANSWER✔✔-c) |only |in |the |liquid |section |of |tank.
An |API |653 |hydrotest |shall |be |held |for |at |least:
a) |4 |hours.
b) |8 |hours
c) |12 |hours
d) |24 |hours |- |CORRECT |ANSWER✔✔-d) |24 |hours
During |a |tank |repair, |if |API |653 |conflicts |with |the |design |standard, |which |standard |governs?
a) |most |stringent |standard
b) |design |standard |
c) |API |653
d) |either |standard |based |on |the |inspector"s |judgment |- |CORRECT |ANSWER✔✔-c) |API |653
Which |of |the |following |activities |is |considered |an |alteration |in |API |653?
a) |the |addition |of |a |shell |lap |patch
b) |the |addition |of |a |floor |lap |patch
c) |the |addition |of |a |shell |insert |patch
d) |the |addition |of |16 |NPS |nozzle |
e) |the |addition |of |a |tank |bottom |lining |- |CORRECT |ANSWER✔✔-d) |the |addition |of |16 |NPS |
nozzle
Repaired |or |replaced |bottom |welds |shall |be |examined |with |either |a |vacuum |box |or |by |using:
