API 570 Study Guide Questions With
Correct Answers
Pressure |applied |inside |a |pipe |creates |stress |in |the |pipe |wall. |These |stresses |are |highest |on |
which |weld |orientation? |- |CORRECT |ANSWER✔✔-longitudinal |weld
Per |B31.3, |how |much |RT |is |conducted |on |circumferential |welds |of |a |pipe |in |normal |service? |- |
CORRECT |ANSWER✔✔-10%
for |welded |pipe, |the |normal |thickness |of |under-tolerance |is? |- |CORRECT |ANSWER✔✔-.010 |or |
10 |mils
The |corrosiveness |of |soils |can |be |determined |by |measuring |the |soils: |- |CORRECT |ANSWER✔✔-
Resistivity
when |qualifying |a |weld |procedure |the |essential |variables |must: |- |CORRECT |ANSWER✔✔-be |
recorded |on |both |the |WPS |& |PQR
In |severe |refinery |services |which |type |of |pipe |is |normally |used? |- |CORRECT |ANSWER✔✔-
seamless |pipe
a |pipe |has |a |thickness |designation |of |"40S". |what |does |the |"S" |mean? |- |CORRECT |
ANSWER✔✔-Stainless |steel
Generally |socket-welded |pipe |is |not |used |for |nominal |pipe |sizes |above: |- |CORRECT |
ANSWER✔✔-2 |inches
A |propane |piping |system |should |be |classified |as? |- |CORRECT |ANSWER✔✔-Class |1
,According |to |ASME/ANSI |B16.5 |flanges |from |plate |materials |can |only |be |used |for: |- |CORRECT |
ANSWER✔✔-Blind |flanges
Preheat |should |never |be |substituted |for |PWHT |if: |- |CORRECT |ANSWER✔✔-the |PWHT |was |
used |to |prevent |environmental |cracking.
During |welding, |non-esential |variables: |- |CORRECT |ANSWER✔✔-Must |be |recorded |only |on |the
|WPS |and |must |be |followed |by |the |welder.
During |a |hydrotest, |all |joints |should |be: |- |CORRECT |ANSWER✔✔-left |uninsulated
ASME/ANSI |B16.5 |requires |flanges |to |be: |- |CORRECT |ANSWER✔✔-marked |with |the |class |
rating.
Graphitization |of |carbon |steels |begins |to |occur |when |metal |temperatures |exceed: |- |CORRECT |
ANSWER✔✔-800°F
During |pipe |fabrication |who |has |overall |responsibility |for |compliance |with |the |code? |- |
CORRECT |ANSWER✔✔-The |owner/user
Who |has |the |responsibility |to |determine |the |extent |of |PMI |(Positive |Material |Identification) |
performed? |- |CORRECT |ANSWER✔✔-The |owner/user
An |inservice |process |pipe |should |be |classified |as |Class |1 |when |the |% |of |H2S |exceeds: |- |
CORRECT |ANSWER✔✔-3%
A |welder |becomes |unqualified |when |he |has |not |welded |in: |- |CORRECT |ANSWER✔✔-6 |months
, A |PQR |test |coupon |with |a |shell |thickness |of |"T" |can |generally |be |used |to |qualify |a |wall |
thickness |on |the |WPS |up |to. |- |CORRECT |ANSWER✔✔-2T
A |pressure |test |is |always |required: |- |CORRECT |ANSWER✔✔-whenever |the |authorized |
inspector |believes |one |is |necessary
When |can |radiography |not |be |used |to |qualify |a |welder? |- |CORRECT |ANSWER✔✔-when |using |
the |GMAW |process |with |the |short |circuit |mode
Generally, |raised |face |flanges |should |have |a |surface |finish |of: |- |CORRECT |ANSWER✔✔-125-250
|micro- |inches
During |a |direct |visual |exam |of |a |pipe |weld, |the |minimum |light |intensity |should |be: |- |CORRECT |
ANSWER✔✔-100 |footcandles
Describe |the |3G |welding |test |position. |- |CORRECT |ANSWER✔✔-Vertical |groove |Weld
Seal |welding |pipe |threads: |- |CORRECT |ANSWER✔✔-may |be |used |to |prevent |leaks
Liquid |thermal |relief |valves |should |be |set |at |a |pressure |not |higher |than: |- |CORRECT |
ANSWER✔✔-120 |%
When |fabricating |pipe, |unknown |materials: |- |CORRECT |ANSWER✔✔-Should |never |be |used |
(except |for |door |stops)
The |material |verification |program |specified |by |API |578 |covers: |- |CORRECT |ANSWER✔✔-only |
pressure |containing |components.
Correct Answers
Pressure |applied |inside |a |pipe |creates |stress |in |the |pipe |wall. |These |stresses |are |highest |on |
which |weld |orientation? |- |CORRECT |ANSWER✔✔-longitudinal |weld
Per |B31.3, |how |much |RT |is |conducted |on |circumferential |welds |of |a |pipe |in |normal |service? |- |
CORRECT |ANSWER✔✔-10%
for |welded |pipe, |the |normal |thickness |of |under-tolerance |is? |- |CORRECT |ANSWER✔✔-.010 |or |
10 |mils
The |corrosiveness |of |soils |can |be |determined |by |measuring |the |soils: |- |CORRECT |ANSWER✔✔-
Resistivity
when |qualifying |a |weld |procedure |the |essential |variables |must: |- |CORRECT |ANSWER✔✔-be |
recorded |on |both |the |WPS |& |PQR
In |severe |refinery |services |which |type |of |pipe |is |normally |used? |- |CORRECT |ANSWER✔✔-
seamless |pipe
a |pipe |has |a |thickness |designation |of |"40S". |what |does |the |"S" |mean? |- |CORRECT |
ANSWER✔✔-Stainless |steel
Generally |socket-welded |pipe |is |not |used |for |nominal |pipe |sizes |above: |- |CORRECT |
ANSWER✔✔-2 |inches
A |propane |piping |system |should |be |classified |as? |- |CORRECT |ANSWER✔✔-Class |1
,According |to |ASME/ANSI |B16.5 |flanges |from |plate |materials |can |only |be |used |for: |- |CORRECT |
ANSWER✔✔-Blind |flanges
Preheat |should |never |be |substituted |for |PWHT |if: |- |CORRECT |ANSWER✔✔-the |PWHT |was |
used |to |prevent |environmental |cracking.
During |welding, |non-esential |variables: |- |CORRECT |ANSWER✔✔-Must |be |recorded |only |on |the
|WPS |and |must |be |followed |by |the |welder.
During |a |hydrotest, |all |joints |should |be: |- |CORRECT |ANSWER✔✔-left |uninsulated
ASME/ANSI |B16.5 |requires |flanges |to |be: |- |CORRECT |ANSWER✔✔-marked |with |the |class |
rating.
Graphitization |of |carbon |steels |begins |to |occur |when |metal |temperatures |exceed: |- |CORRECT |
ANSWER✔✔-800°F
During |pipe |fabrication |who |has |overall |responsibility |for |compliance |with |the |code? |- |
CORRECT |ANSWER✔✔-The |owner/user
Who |has |the |responsibility |to |determine |the |extent |of |PMI |(Positive |Material |Identification) |
performed? |- |CORRECT |ANSWER✔✔-The |owner/user
An |inservice |process |pipe |should |be |classified |as |Class |1 |when |the |% |of |H2S |exceeds: |- |
CORRECT |ANSWER✔✔-3%
A |welder |becomes |unqualified |when |he |has |not |welded |in: |- |CORRECT |ANSWER✔✔-6 |months
, A |PQR |test |coupon |with |a |shell |thickness |of |"T" |can |generally |be |used |to |qualify |a |wall |
thickness |on |the |WPS |up |to. |- |CORRECT |ANSWER✔✔-2T
A |pressure |test |is |always |required: |- |CORRECT |ANSWER✔✔-whenever |the |authorized |
inspector |believes |one |is |necessary
When |can |radiography |not |be |used |to |qualify |a |welder? |- |CORRECT |ANSWER✔✔-when |using |
the |GMAW |process |with |the |short |circuit |mode
Generally, |raised |face |flanges |should |have |a |surface |finish |of: |- |CORRECT |ANSWER✔✔-125-250
|micro- |inches
During |a |direct |visual |exam |of |a |pipe |weld, |the |minimum |light |intensity |should |be: |- |CORRECT |
ANSWER✔✔-100 |footcandles
Describe |the |3G |welding |test |position. |- |CORRECT |ANSWER✔✔-Vertical |groove |Weld
Seal |welding |pipe |threads: |- |CORRECT |ANSWER✔✔-may |be |used |to |prevent |leaks
Liquid |thermal |relief |valves |should |be |set |at |a |pressure |not |higher |than: |- |CORRECT |
ANSWER✔✔-120 |%
When |fabricating |pipe, |unknown |materials: |- |CORRECT |ANSWER✔✔-Should |never |be |used |
(except |for |door |stops)
The |material |verification |program |specified |by |API |578 |covers: |- |CORRECT |ANSWER✔✔-only |
pressure |containing |components.
