API-510 Exam with Questions and complete solutions
3 views 0 purchase
Course
API-510
Institution
API-510
Which of the following statements is correct with regard to the welder's qualifications for a minor
pressure repair requested by an owner/operator?
A: The welder must be qualified for the applicable process by the company making the repair
B: A welder who is an employee of the owner/operator nee...
API-510 Exam with Questions and
complete solutions
Which of the following statements is correct with regard to the welder's qualifications for a minor
pressure repair requested by an owner/operator?
A: The welder must be qualified for the applicable process by the company making the repair
B: A welder who is an employee of the owner/operator need not be formally qualified
C: The welder must be qualified by an ASME-Code shop, and be current in the process used for the
repair
D: The weld may use any qualified procedures that are in accordance with the ASME Code, Section IX. -
✔✔A: The welder must be qualified for the applicable process by the company making the repair
Materials used for making repairs shall be of known weldable quality and shall:
A: Be compatible with the original material
B: Be of known toughness
C: Have a minimum tensile strength of 50,000 psi
D: Have an ASTM specification number - ✔✔A: Be compatible with the original material
The springs in pressure-relief valves typically fail due to:
A: Tensile overload
B: Creep
C: Erosion
D: Corrosion - ✔✔D: Corrosion
Above what pressure is a vessel considered to be in the scope of API Code:
A: 2.5psi
B: 5psi
C: 10psi
D: 15psi - ✔✔D: 15psi
,When a dial type indicating pressure gauges are used during a vessel hydrotest, the maximum gauge
range shall not exceed which multiple of the expected test pressure?
A: 1.5 times
B: 2.5 times
C: 3 times
D: 4 Times - ✔✔D: 4 Times
A corner joint is a joint between 2 member that are located:
A: Parallel to each other
B: At approx a 30 deg angle to each other
C: At approx a 60 deg angle to each other
D: At approx right angles to each other - ✔✔D: At approx right angles to each other
An inspector evaluating thickness measurements taken on a pressure vessel discovers indications of
corrosion at only one of the measurement locations. The inspector should:
A: Calculate a new corrosion rate for the vessel, based on the single location
B: Take more measurements in the corroded area, to define the extent of corrosion
C: Ask that another inspector retake the measurement
D: Disregard the single measurement because the other measurements do not indicate corrosion -
✔✔B: Take more measurements in the corroded area, to define the extent of corrosion
A welder who fails a qualification testing on 6 inches of a production plate may be immediately retested
by:
A: Welding a 2inch NPS pipe joint and having radiographic testing performed.
B: Cutting out the bad weld, re-welding the same 6 inches, and then radiographically testing the weld
C: Radiographing an additional 12 inches of the production weld
D: Welding a 6-inch plate test coupon and having a mechanical bend test performed. -
✔✔C: Radiographing an additional 12 inches of the production weld
3 pressure gauges are installed for convenience in the hydrostatic testing of a pressure vessel. The 1st is
at the top if the vessel, the 2nd is 45ft from the top (reading 169.5 psig) and the 3rd is 100ft from the
top (reading 193.5 psig). If the vessel is 125ft high, what is the pressure at the top? [1 foot of water =
0.433 psi]
,A: 140 psig
B: 150 psig
C: 189 psig
D: 204 psig - ✔✔B: 150 psig
(.433) (100) 43.3 193.5-43.3= 150.2
Materials used in welded repair or alteration of a pressure vessel are specified in the ASME Code Section
II and they must have a carbon content not
exceeding. A: .25%
B: .30%
C: .35%
D: .40% - ✔✔C: .35%
What type of pressure relief valve has a main relieving valve controlled by a small spring-loaded (set
actuated) pressure relief valve?
How many test blocks are required for UT procedure calibration?
A: 2; 1 at the maximum range and 1 at the minimum range to be measured
B: 4; 2 at the maximum range and 2 at the minimum range to be measured
C: 6; 2 at the maximum range, 2 at the mid range, and 2 at the minimum range to be measured
D: 6: 1 at the maximum range 1 at 3/4", 1 at 5/8", 1 at 1/2", one at 3/8" and 1 at the minumum range
to be measured. - ✔✔A: 2; 1 at the maximum range and 1 at the minimum range to be measured
When performing a weld repair on a section of stainless-steel weld overlay on a carbon-steel vessel in
hydrogen service, which of the following is most important?
A: Magnetic particle testing of the overlay
, B: Brinell hardness testing of the overlay
C: Out-gassing of the base metal
D: Impact testing of the base metal - ✔✔C: Out-gassing of the base metal
Which of the following should be done when a vessel hydrostatic pressure test is being conducted and
the test pressure exceeds the set pressure of the vessel safety-relief valve?
A: Vent the safety relief valve in a safe direction (away from personnel), and test it at the same time as
the pressure test of the vessel
B: A properly locked-out block valve between the safety-relief valve and the vessel will sufficiently
isolate the relief valve
C: The safety relief valve or valves should be removed, or test clamps can be used to hold down
the safety-relief valve disks
D: Applying an additional load to the valve spring by turning the compression screw is recommended if
test pressure can be exceeded - ✔✔C: The safety relief valve or valves should be removed, or test
clamps can be used to hold down the safety-relief valve disks
A vessel in ethylene condensate service is being moved and put into steam condensate service. The
corrosion rate for the vessel while in ethylene service was 1 mil per year. The inspector should:
a) Require re-rating of the vessel
b) Require a pressure test
c) Establish a new probable corrosion rate
d) Continue to maintain the old corrosion rate to determine if it was correct - ✔✔c) Establish a
new probable corrosion rate
An external inspection of a pressure vessel should begin with:
a) Anchor bolts, foundations, and supports
b) Ladders, stairways, platforms, or walkways
c) External paint and insulation
d) Nozzles and manways - ✔✔b) Ladders, stairways, platforms, or walkways
When notch-toughness testing performed as part of the qualification of a welding procedure the test is
performed using the:
a) Brinnel Test
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller KenAli. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.99. You're not tied to anything after your purchase.
