To exempt a vessel from internal inspections, what is the value of the corrosion rate that cannot be exceeded?
- A . 0.005” per year
- B . 0.001” between inspections not to exceed 5 years between inspections
- C . 0.001” per year
- D . 0.005” between inspections not to exceed 3 years between inspections
The remaining life of a vessel is 24 years.
What is the maximum interval for the internal inspection?
- A . 5 years
- B . 6 years
- C . 10 years
- D . 12 years
If a vessel is subjected to temperatures above design, what may happen
- A . Precipitation at the grain boundaries may occur.
- B . The rupture disk may implode
- C . The relief device may fail
- D . Creep of the vessel’s material may occur
The internal inspection interval must be reviewed whenever changes occur that could affect the degradation of the vessel.
In which of the following situations does a review of the internal interval need not be conducted?
- A . operating temperature increases
- B . operating pressure decreases
- C . operating pressure increases
- D . fluid composition changes
The definition of pressure vessels is:
- A . A container designed to withstand internal or external pressure
- B . A vessel for the containment of process fluids with or without internal pressure
- C . A container designed to operate below atmospheric pressure
- D . A container no greater than 8” in cross section
The best description of Temper embrittlement is:
- A . Cracking due to operating at high temperatures above 650°F C 1100°F
- B . Cracking due to low temperature service
- C . Loss of ductility and notch toughness due to exposure above 650°F C 1100°F
- D . Flaking of the metal surfaces, causing dip pits due to exposure above 650ºF C1100°F
At the discretion of ________, on-stream inspection may be substituted for internal inspection.
- A . An engineer experienced in corrosion
- B . The owner-user of the pressure vessel
- C . An engineer experienced in pressure vessel design
- D . The authorized pressure vessel inspector
An on-stream inspection can NOT be substituted for an internal inspection unless the remaining life exceeds:
- A . 2 years
- B . 4 years
- C . 5 years
- D . 10 years
Which is the most severe stress caused by internal pressure in a cylindrical shell?
- A . Longitudinal stress acting along the longitudinal axis
- B . Circumferential stress acting along the longitudinal axis
- C . Circumferential stress acting along the circumferential axis
- D . Longitudinal stress acting along the circumferential axis
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
When both the ownership and the location of a pressure vessel are changed, what must be done?
- A . The vessel must be inspected and certified by the original vessel manufacturer
- B . The vessel must be externally and internally inspected prior to re-use
- C . The vessel must be inspected externally and certified by the owner/user
- D . A new nameplate shall be attached to the vessel
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 years
- B . The full remaining safe operating life up to a maximum of 2 years
- C . The full remaining safe operating life up to a maximum of 1 year
- D . The full remaining life of the vessel
Who must be consulted before the repair of a crack at a discontinuity where stress concentrations may be serious?
- A . The owner-user
- B . The pressure vessel engineer
- C . The National Board inspector
- D . The vessel manufacturer
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 temperature
- B . Minimum temperature shall be at least 30˚F above the minimum design metal temperature
- C . Minimum temperature shall be ambient temperature but not less than 55°F
- D . Minimum temperature shall be 60°F
Which of the following relief devices is intended to work with steam boilers?
- A . Relief Valve.
- B . Safety Relief Valve.
- C . Safety Valve.
- D . Balanced Safety Relief.
When discussing repairs to a pressure vessel what is the definition of ‘construction codes’?
- A . The NBIC
- B . The current ASME Code edition
- C . The API 510 Code
- D . The Code the vessel was constructed to including non-standard and jurisdictional special vessels
After a vessel has been placed in service, what Code is used to evaluate?
- A . ASME Section VIII
- B . ASME Section V
- C . API 572
- D . API 510
When the half bead or temper bead technique of repair is proposed, the first consideration that must be given should be;
- A . Close monitoring of the welding operation
- B . A metallurgical review conducted by an engineer shall be performed to assure the proposed alternative is suitable for the application
- C . Time required to do the repair, and personnel safety
- D . Consultation with the jurisdictional requirements
An in-service vessel is being repaired or altered.
If there is a conflict between the requirements of API 510 and the legal jurisdiction, which should be followed?
- A . API 510
- B . the legal jurisdiction
- C . the most stringent requirements
- D . either set of requirements based on engineer and AI approval
Which of the following will vessel rerating involve:
- A . Calculations from either the manufacturer or an owner-user engineer experienced in pressure vessels
- B . Review Inspection records verify the pressure vessel has been in the proposed service previously
- C . Use of Non-Code requirements as established in accordance with the alternative rules of API 572
- D . Calculations from only a manufacturer experienced in pressure vessels
When must both an internal and external inspection always be performed?
- A . at installation of vessel
- B . whenever there is a change in fluid service
- C . whenever the vessel’s ownership changes
- D . whenever the vessel’s ownership and location changes
When a crack is discovered in a vessel that is in a highly stressed area, what action should you recommend to be considered as a first step in any effort to correct the flaw?
- A . Call in a pressure vessel engineer
- B . Design an overlay patch to completely cover the affected area that has rounded corners
- C . Using an insert patch, to completely remove the affected area
- D . Removing the crack using by grinding and inspect using an NDE procedure before repair by welding
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 E < 1.
- B . Recalculate t minimum for current operating conditions using E = 1.
- C . Recalculate t minimum for design conditions using E = 1.
- D . Monitor the thickness during the run.
One of the steps when rerating a pressure vessel is the documentation of the:
- A . Approval of the ASME
- B . Report from an external professional engineer
- C . Approval of the operation’s engineering department
- D . Calculations from the manufacturer or the owner-user’s engineer
Increasing hardness of the metal substrate is not always a good indicator of improved resistance to __________, particularly where corrosion plays a significant role.
- A . stress corrosion
- B . erosion
- C . stress corrosion cracking
- D . ductile failure
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 remain in place permanently if approved by the pressure vessel engineer and the API authorized pressure vessel inspector.
Unless there is indicative information on the brittle characteristics of the vessel material, the test temperature of the metal during a pressure test need not exceed what temperature?
- A . 130˚F
- B . 120°F
- C . 60°F
- D . 200˚F
Pneumatic testing may be substituted for hydrostatic testing provided all but which of the following?
- A . Water is not readily available
- B . Refractory
- C . Temperature
- D . Process
Pressure relieving device repair organizations shall have a fully documented quality control system and which of the following?
- A . A valve Repair Certificate of Authorization issued by the API
- B . A Valve Repair Certificate of Authorization issued by the National Board
- C . Fully documented training program
- D . A Valve Repair Certificate of Authorization issued by the ASME