Explain the importance of lifecycle assessments in managing pressure vessels under API-510.

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Determine in what two ways may the probable corrosion rate for a new vessel be determined before the first internal inspection?

• A.Assuming a standard corrosion rate
• B.From data collected on vessels providing the same or similar service or from published data on vessels providing comparable service
• C.Employing highly experienced inspectors or engineers
• D.Corrosion tabs and UT readings

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Describe the procedures outlined in API-510 for handling and documenting modifications to pressure vessels.

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Temporary repairs to pressure vessels:

• A.may remain in place for long periods if approved by the pressure vessel engineer.
• B.must be replaced with permanent repairs during the next scheduled shutdown.
• C.may remain in place for long periods if approved by the API-authorized pressure vessel inspector.
• D.may remain in place permanently if approved by the pressure vessel engineer and the API authorized pressure vessel inspector.

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For an above ground 'higher risk' vessel the maximum interval between external visual inspections is:

• A.10 years or 1/2-remaining corrosion rate life, whichever is less
• B.5 years
• C.3 years
• D.There is no maximum interval

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