According to API-510, which type of record must be permanently maintained for a pressure vessel?

• A.Only the most recent inspection record
• B.Inspection records only
• C.All records related to the vessel's design, fabrication, inspection, and repairs
• D.Repair records only

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What is the API-510 required minimum thickness for ultrasonic testing on a pressure vessel's shell?

• A.0.375 inches
• B.0.1 inches
• C.0.05 inches
• D.0.25 inches

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During vessel repairs or alterations, who is required to maintain the welding records?

• A.repair organization owner/user
• B.welding inspector
• C.authorized inspector
• D.pressure vessel engineer

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What is the API-510 recommendation for frequency of internal inspections for vessels containing corrosive substances?

• A.Depends on the results of the last inspection
• B.At least once every 5 years
• C.At least once every 3 years
• D.At least once every 10 years

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The surface remote from a welded joint is defined as:

• A.For vessels with inside diameters less than 60 inches 20 inches or ½ the vessel diameter
• B.1 inch on either side of the weld or twice the minimum thickness whichever is greater
• C.1 inch on either side of the weld or twice the minimum thickness whichever is less
• D.2 inches on either side of the weld

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