API-510 Closed Book (Verified on test) Questions with Verified Solutions

API-510 Closed Book (Verified on test) Questions with Verified Solutions If a welder has qualified in the shielded metal arc welding, submerged arc welding, and gas tungsten arc welding processes but has welded in only one of them, qualification for the other 2 processes remains valid: A: for 6 months B: for 1 year C: for 2 years D: Indefinitely A: for 6 months One purpose of reviewing previous inspection reports is to ensure that: A: Estimated corrosion rates for new equipment are accurate B: Pressure relief valves have been installed prior to placing the vessel in service C: Required pressure tests have been preformed D: Thickness readings have been taken after every 1,000 hours of service A: Estimated corrosion rates for new equipment are accurate A Vessel has a single corrosion rate of 10 mils per year. The minimum vessel required thickness for both the shell and the heads is 0.75". The actual thickness of the heads is 0.95" and the shell is 0.90". What is the vessel's remaining life? A: 7.5 years B: 10 years C: 15 years D: 20 years C: 15 years (.90-.75)/.010=15 A pressure vessel has been in non-continuous service for 15 years. During this time, it has been filled 3 times for 2 years at a time, then internally inspected. The last internal inspection determined that the vessel had 9 years of remaining life. The next inspection is due: A: Before 4.5 years of actual service B: Before 5 years of actual service C: Before 7.5 years of actual service D: Before a maximum of 10 years actual service A: Before 4.5 years of actual service Bulges and buckling in the metallic linings of pressure vessels normally indicate: A: A leak in the lining or attachment welds B: Accelerated corrosion of the parent metal C: That the lining material was not compatible with the process D: That the oversized lining was installed A: A leak in the lining or attachment welds Increasing the maximum allowable working pressure and/or the temp of a pressure vessel, or decreasing the temp so that additional Charpy impact testing will be required, is considered which of the following: A: A modification B: A rework C: An alteration D: A repair C: An alteration After an alteration to a pressure vessel, a nondestructive examination procedure may be substituted for a pressure test only when a/an: A: Authorized inspector has approved the NDE procedure B: Pressure vessel engineer and an authorized pressure vessel inspector have been consulted C: Pressure vessel engineer experienced in pressure vessel design has approved the NDE procedure D: Pressure test is not practical B: Pressure vessel engineer and an authorized pressure vessel inspector have been consulted A plant engineer would like to increase a vessel's operating temp by 100F. The vessel's nameplate states a maximum allowable working pressure of 250 PSIG at 650F, and the current operating temp is 600F. What is the 1st step in increasing the operating temp? A: Perform calculations to determine if the vessel thickness is sufficient B: Determine a new corrosion rate for the vessel