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Who must be consulted before the repair of a crack at a discontinuity where stress concentrations may be serious?
Who must be consulted before the repair of a crack at a discontinuity where stress concentrations may be serious?A . The owner-userB . The pressure vessel engineerC . The National Board inspectorD . The vessel manufacturerView AnswerAnswer: B
What is the maximum interval for the internal inspection?
The remaining life of a vessel is 24 years. What is the maximum interval for the internal inspection?A . 5 yearsB . 6 yearsC . 10 yearsD . 12 yearsView AnswerAnswer: C
What can be done to extend the life of a vessel with a corroded area in the shell plate 6 inches from the weld, a joint efficiency of less than 1, and a corrosion thickness currently near the minimum required thickness?
What can be done to extend the life of a vessel with a corroded area in the shell plate 6 inches from the weld, a joint efficiency of less than 1, and a corrosion thickness currently near the minimum required thickness?A . Recalculate t minimum for current operating conditions using...
What is the maximum inspection interval for a vessel with a remaining safe operating life of less than four years?
What is the maximum inspection interval for a vessel with a remaining safe operating life of less than four years?A . The full remaining safe operating life up to a maximum of 4 yearsB . The full remaining safe operating life up to a maximum of 2 yearsC . The...
Which of the following will vessel rerating involve:
Which of the following will vessel rerating involve:A . Calculations from either the manufacturer or an owner-user engineer experienced in pressure vesselsB . Review Inspection records verify the pressure vessel has been in the proposed service previouslyC . Use of Non-Code requirements as established in accordance with the alternative rules...
To exempt a vessel from internal inspections, what is the value of the corrosion rate that cannot be exceeded?
To exempt a vessel from internal inspections, what is the value of the corrosion rate that cannot be exceeded?A . 0.005” per yearB . 0.001” between inspections not to exceed 5 years between inspectionsC . 0.001” per yearD . 0.005” between inspections not to exceed 3 years between inspectionsView AnswerAnswer:...
What is the minimum temperature of the metal during a pressure test of a 2.125" thick vessel?
What is the minimum temperature of the metal during a pressure test of a 2.125" thick vessel?A . Minimum temperature shall be at least 20˚F above the minimum design metal temperatureB . Minimum temperature shall be at least 30˚F above the minimum design metal temperatureC . Minimum temperature shall be...
If a vessel is subjected to temperatures above design, what may happen
If a vessel is subjected to temperatures above design, what may happenA . Precipitation at the grain boundaries may occur.B . The rupture disk may implodeC . The relief device may failD . Creep of the vessel’s material may occurView AnswerAnswer: D
Temporary repairs to pressure vessels:
Temporary repairs to pressure vessels:A . must be replaced with permanent repairs during the next scheduled shutdown.B . may remain in place for long periods if approved by the pressure vessel engineer.C . may remain in place for long periods if approved by the API-authorized pressure vessel inspector.D . may...
