API 653 EXAM AND ITS CORRECT
EXPECTED SOLUTIONS
Reference Documents -Fitness for service
API 579
Reference Documents -Risked Based Inspection
API 580
Reference Documents -Low Pressure Storage Tanks
API 620
Reference Documents -Cathodic Protection
API 651
Reference Documents -Tank Bottom Linings
API 652
Reference Documents -Welding on In-Service
Equipment containing Flammables
API 2201
Reference Documents -NDE Procedure Guidlines
ASME Sect V
Reference Documents -Acceptance Standards for RT's
of welds
ASME Sect 8, Div 1
Reference Documents -Alternative evaluation of Pits
and locally thinned areas
ASME Sect 8, Div 2
Reference Documents -Welder Identification
ASME Sect IX
Reference Documents -Weld Procedure Qualification
ASME Sect IX
,Reference Documents -Impact Testing Method and
Equipment Requirments
ASTM A370
Reference Documents -Requirement for new welding
electrodes
AWS
Reference Documents -NDE Personnel Qualification
(RT and UT Flaw Detection)
ASNT SNT-TC-1A
Reference Documents -API 650 Appendix for
Frangible Roofs
Appendix F
Reference Documents -API 650 Appendix for Hot
Tanks
Appendix M
Typically anchor profile of steel surface required for
the installation of a tank bottom lining
1.5 - 4.0 Mils
Maximum undercut of a vertical weld and Nozzle weld
1/64"
Maximum undercut of a horizontal weld
1/32"
Maximum Diameter of a surface porosity cluster
3/32"
Minimum size of nameplate letters
5/32"
Minimum external projection of bottom plate on an
existing tank
3/8"
Maximum amount of peaking allowed in vertical welds
1/2"
, When calculation t-min for Shell locally thinned area,
minimum distance area away from a weld where "E" is
always 1.0
>1" or 2t
Minimum overlap of shell lap-patch used to cover a
hole(Edge of hole to edge of patch)
1"
When performing PT or MT examiniation, minimum
distance to clean beyond the area to be examined
1"
Maximum amount of banding allowed in a horizontal
weld
1"
Minimum overlap required for single-welded lap joints
1"
Minimum external projection of bottom plate on a new
tank
2"
Minimum overlap of previously test surfaces when
using a vacuum box
2"
Mimimum overlap of bottom lap-patch used to cover
corroded area (edge of corrosion to edge of patch)
2"
Minimum distance bottom lap-patch fillet weld to the
nearest existing bottom weld
2"
Minimum radius of a shell lap-patch
2"
If reusing bottom plates, min distance to cut from
existing bottom welds(If plates are not deseamed)
EXPECTED SOLUTIONS
Reference Documents -Fitness for service
API 579
Reference Documents -Risked Based Inspection
API 580
Reference Documents -Low Pressure Storage Tanks
API 620
Reference Documents -Cathodic Protection
API 651
Reference Documents -Tank Bottom Linings
API 652
Reference Documents -Welding on In-Service
Equipment containing Flammables
API 2201
Reference Documents -NDE Procedure Guidlines
ASME Sect V
Reference Documents -Acceptance Standards for RT's
of welds
ASME Sect 8, Div 1
Reference Documents -Alternative evaluation of Pits
and locally thinned areas
ASME Sect 8, Div 2
Reference Documents -Welder Identification
ASME Sect IX
Reference Documents -Weld Procedure Qualification
ASME Sect IX
,Reference Documents -Impact Testing Method and
Equipment Requirments
ASTM A370
Reference Documents -Requirement for new welding
electrodes
AWS
Reference Documents -NDE Personnel Qualification
(RT and UT Flaw Detection)
ASNT SNT-TC-1A
Reference Documents -API 650 Appendix for
Frangible Roofs
Appendix F
Reference Documents -API 650 Appendix for Hot
Tanks
Appendix M
Typically anchor profile of steel surface required for
the installation of a tank bottom lining
1.5 - 4.0 Mils
Maximum undercut of a vertical weld and Nozzle weld
1/64"
Maximum undercut of a horizontal weld
1/32"
Maximum Diameter of a surface porosity cluster
3/32"
Minimum size of nameplate letters
5/32"
Minimum external projection of bottom plate on an
existing tank
3/8"
Maximum amount of peaking allowed in vertical welds
1/2"
, When calculation t-min for Shell locally thinned area,
minimum distance area away from a weld where "E" is
always 1.0
>1" or 2t
Minimum overlap of shell lap-patch used to cover a
hole(Edge of hole to edge of patch)
1"
When performing PT or MT examiniation, minimum
distance to clean beyond the area to be examined
1"
Maximum amount of banding allowed in a horizontal
weld
1"
Minimum overlap required for single-welded lap joints
1"
Minimum external projection of bottom plate on a new
tank
2"
Minimum overlap of previously test surfaces when
using a vacuum box
2"
Mimimum overlap of bottom lap-patch used to cover
corroded area (edge of corrosion to edge of patch)
2"
Minimum distance bottom lap-patch fillet weld to the
nearest existing bottom weld
2"
Minimum radius of a shell lap-patch
2"
If reusing bottom plates, min distance to cut from
existing bottom welds(If plates are not deseamed)
