API 510 (Pressure Vessel Inspection Code)Pressure Vessel
Inspection Code: In-service Inspection, Rating, Repair and
alteration
ACFM Correct Answers Alternating current field
measurement
Alteration Correct Answers A physical change in any
component that has design implications that affect the pressure-
containing capability of a pressure vessel
API 510 coverage Correct Answers In-service inspection,
repair, alteration, and rerating activities for pressure vessels and
the pressure-
relieving devices
API 510 includes Correct Answers a) vessels constructed with
construction code
b) vessels constructed with no construction code
c) vessels constructed and approved as jurisdictional special
d) A vessel fabricated with no nameplate or stamping
Applicable construction code Correct Answers code generally
accepted engineering standard or practice to which the pressure
vessel was built or which is deemed by the owner/user or the
engineer
Approval Correct Answers 1. Inspector may establish hold
points to be implemented during the work execution.
2. For alteration, engineer should be the one who approve
,3. Before any repairs or alterations are performed, all proposed
methods of design, execution, materials, welding procedures,
NDE, and testing must be approved by the inspector
4. An engineer shall approve all nozzle installations.
Authorization Correct Answers 1. All repair and alteration
work must be authorized by the inspector before the work is
started by a repair organization.
2. Alterations to pressure vessels that comply with ASME
should an engineer has also authorized the work. The inspector
will designate the hold points that are required.
3. The inspector may give prior general authorization for limited
or routine repairs on a specific vessel provided the inspector is
satisfied with the competency of the repair organization and the
repairs are the kind that will not require a pressure test.
Authorized inspection agency Correct Answers a. The
inspection organization of the jurisdiction
b. The inspection organization of an insurance company
c. The inspection organization of an owner or user of pressure
vessels
d. An independent organization or individual that is under
contract to and under the direction of an owner/user
Buried Vessels Correct Answers Determine their external
surface condition. The inspection interval shall be based on
corrosion rate information obtained
, ■ During maintenance activity on connecting piping of similar
material
■ From the interval examination of similarly buried corrosion
test coupons of like material
■ From representative portions of the actual vessel
■ From a vessel in similar circumstances.
CML Monitoring Correct Answers a. shall be monitored by
performing a representative number of examinations at CMLs to
satisfy the requirements for an internal or on-stream inspection
b. Corrosion rates, the remaining life and next inspection
intervals should be calculated to determine the limiting
component.
c. The rate of corrosion/damage shall be determined from
successive measurements and the next inspection interval
appropriately established.
d. Where thickness measurements are obtained at CMLs, the
minimum thickness at a CML can be located by ultrasonic
measurements or radiography.
e. The thinnest reading or an average of several measurement
readings taken within the area of an examination point shall be
recorded and used to calculate the corrosion rates.
f. Examination points should be permanently recorded to allow
repetitive measurements at the same CMLs. Repeating
measurements at the same location improves accuracy
of the calculated damage rate
CML Selection Correct Answers A decision on the type,
number, and location of the CMLs should consider results from
previous inspections, the patterns
, of corrosion and damage that are expected and the potential
consequence of loss of containment.
Communication Correct Answers ■. Personnel should obtain
permission to work in the vicinity from operating personnel
responsible for the pressure vessel.
■ When inside a vessel, all persons working around the vessel
should be informed that people are working inside the vessel.
■ Individuals working inside the vessel should be informed
when any work is going to be done on the vessel's exterior
Condition Monitoring Locations (CMLs) or Thickness
Monitoring Locations (TMLs) Correct Answers Designated
areas on pressure vessels where periodic examinations are
conducted to monitor the presence and rate damage.
Consequence Assessment Correct Answers The consequence
of a release is dependent on type and amount of process fluid
contained in the equipment
Contents of an Inspection Plan Correct Answers Shall contain
the inspection tasks and schedule required to monitor damage
mechanisms and assure the mechanical integrity of the
equipment
■ Type(s) of inspection needed
■ Identify the next inspection date
■ Describe the extent and locations of inspection and NDE
■ Describe the surface cleaning requirements needed for
inspection
■ Describe the requirements of any needed pressure test
■ Describe any required repairs
Inspection Code: In-service Inspection, Rating, Repair and
alteration
ACFM Correct Answers Alternating current field
measurement
Alteration Correct Answers A physical change in any
component that has design implications that affect the pressure-
containing capability of a pressure vessel
API 510 coverage Correct Answers In-service inspection,
repair, alteration, and rerating activities for pressure vessels and
the pressure-
relieving devices
API 510 includes Correct Answers a) vessels constructed with
construction code
b) vessels constructed with no construction code
c) vessels constructed and approved as jurisdictional special
d) A vessel fabricated with no nameplate or stamping
Applicable construction code Correct Answers code generally
accepted engineering standard or practice to which the pressure
vessel was built or which is deemed by the owner/user or the
engineer
Approval Correct Answers 1. Inspector may establish hold
points to be implemented during the work execution.
2. For alteration, engineer should be the one who approve
,3. Before any repairs or alterations are performed, all proposed
methods of design, execution, materials, welding procedures,
NDE, and testing must be approved by the inspector
4. An engineer shall approve all nozzle installations.
Authorization Correct Answers 1. All repair and alteration
work must be authorized by the inspector before the work is
started by a repair organization.
2. Alterations to pressure vessels that comply with ASME
should an engineer has also authorized the work. The inspector
will designate the hold points that are required.
3. The inspector may give prior general authorization for limited
or routine repairs on a specific vessel provided the inspector is
satisfied with the competency of the repair organization and the
repairs are the kind that will not require a pressure test.
Authorized inspection agency Correct Answers a. The
inspection organization of the jurisdiction
b. The inspection organization of an insurance company
c. The inspection organization of an owner or user of pressure
vessels
d. An independent organization or individual that is under
contract to and under the direction of an owner/user
Buried Vessels Correct Answers Determine their external
surface condition. The inspection interval shall be based on
corrosion rate information obtained
, ■ During maintenance activity on connecting piping of similar
material
■ From the interval examination of similarly buried corrosion
test coupons of like material
■ From representative portions of the actual vessel
■ From a vessel in similar circumstances.
CML Monitoring Correct Answers a. shall be monitored by
performing a representative number of examinations at CMLs to
satisfy the requirements for an internal or on-stream inspection
b. Corrosion rates, the remaining life and next inspection
intervals should be calculated to determine the limiting
component.
c. The rate of corrosion/damage shall be determined from
successive measurements and the next inspection interval
appropriately established.
d. Where thickness measurements are obtained at CMLs, the
minimum thickness at a CML can be located by ultrasonic
measurements or radiography.
e. The thinnest reading or an average of several measurement
readings taken within the area of an examination point shall be
recorded and used to calculate the corrosion rates.
f. Examination points should be permanently recorded to allow
repetitive measurements at the same CMLs. Repeating
measurements at the same location improves accuracy
of the calculated damage rate
CML Selection Correct Answers A decision on the type,
number, and location of the CMLs should consider results from
previous inspections, the patterns
, of corrosion and damage that are expected and the potential
consequence of loss of containment.
Communication Correct Answers ■. Personnel should obtain
permission to work in the vicinity from operating personnel
responsible for the pressure vessel.
■ When inside a vessel, all persons working around the vessel
should be informed that people are working inside the vessel.
■ Individuals working inside the vessel should be informed
when any work is going to be done on the vessel's exterior
Condition Monitoring Locations (CMLs) or Thickness
Monitoring Locations (TMLs) Correct Answers Designated
areas on pressure vessels where periodic examinations are
conducted to monitor the presence and rate damage.
Consequence Assessment Correct Answers The consequence
of a release is dependent on type and amount of process fluid
contained in the equipment
Contents of an Inspection Plan Correct Answers Shall contain
the inspection tasks and schedule required to monitor damage
mechanisms and assure the mechanical integrity of the
equipment
■ Type(s) of inspection needed
■ Identify the next inspection date
■ Describe the extent and locations of inspection and NDE
■ Describe the surface cleaning requirements needed for
inspection
■ Describe the requirements of any needed pressure test
■ Describe any required repairs
