Open book 1 Flashcards
The categories of stainless steel that are characterized by their metallurgical structure at room temperature are:
austenitic, ferritic, martensitic, and duplex.
API 571 2.1.17
This question does not identify any type of equipment, it is strictly about the material. API 571 is the only document that defines material types in order to detail damage mechanisms and steps to mitigate them
What is the 4T hole diameter for a hole type IQI designation 7?
ASME IV RT
Information on the ultrasonic examination in lieu of radiography during the construction of a tank is found in
API 650 Annex U
for ultrasonic examination in lieu of radiography
For welders making groove welds in P-No.21 through P-No.26 material, qualification by means of volumetric examination is prohibited except when they are using
ASME IX
Welders Qualification
Article III, Paragraph 302
“Type of tests”
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When a concrete ringwall is provided under the shell, the top of the ringwall shall be level within
1/8” in 30 feet
API 650 7.5.5.2
Onsite erection
Dimensional tolerances
Which of the following is true regarding grounding shunts on an external floating roof?
API 650 C.3.1.6
Annex C for external floating roofs
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Identify the position of a groove weld with the following orientation:
Inclination of axis: 0 to 80
Rotation of face: 280 to 360
Overhead
Keywords “inclination of axis” and “rotation of face” ONLY occur in this diagram in ASME IX and can be found by clicking bookmark that says “Graphic” near the end or Article IV
The lowest temperature to be used in the design of a tank built in Washington DC is?
API 650 Temperature map
Design of a tank add 15F
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Corrosion from acidic SW is typically
API 571 Damage mechanisms
Sour water corrosion
What is the minimum spacing between a vertical weld on a shell replacement plate and an existing vertical seam when the replacement plate is 0.375 in. thick
API 653 Fig. 9.1
Minimum Dimensions of Replacement Shell Plate
What is the minimum dimension required for the fillet weld joining a nozzle to the reinforcement plate, when adding a reinforcing plate to an existing shell penetration when the shell is 0.50 in. and the reinforcing plate is 0.250 in. ?
API 653 Fig. 9.7
“Addition or Replacement of Shell Penetrations”
Combined thickness of t and T shows weld size
What type of variable is the addition or deletion, or change in composition of trailing gas for a WPS being qualified using GMAW?
ASME IX
Welding procedure qualification
“Variables”
Draw lines to indicate which are essential variables, which are non-essential variables and which are not variables for a liquid penetrant procedure.
ASME V Liquid penetrant inspection
“Requirements” to find variables
What is the joint efficiency to be used in a shell thickness calculation for a riveted tank when the riveted joint is a butt joint with 3 rows of rivets on each side of the joint, and the corroded area is 5 inches from the rivet seam?
API 653
“Tank shell evaluation”
Table 4.3
“Joint efficiencies for riveted joints”
When considering the interval for ultrasonic thickness inspection from outside the tank, on a tank that is made of A516-70 material, that has been in service for 15 years, and the corrosion rate is unknown, the interval shall be a maximum of
API 653
6.3 “Inspections from outside the tank”
“When the corrosion rate is not know, the maximum interval shall be 5 years”
What is the Group number of CSA G40.21-44W, killed, fine grain practice steel that has chemistry modified to a maximum carbon content of 0.20% and a manganese content of 1.60%?
API 650
“Material Groups”
Table 4.4b
Corrosion rates derived from low inspection effectiveness methods such as _______ shall not be used in the RBI assessment process.
Chapter 6 of API 653 are where inspection intervals are assigned
“Inspection Intervals”
Look for RBI
