API 653 Certification - Practice Exam - Open Book Questions and Answers 100% Pass

API 653 Certification - Practice Exam - Open Book Questions and Answers 100% Pass An insert plate is required for a new 4 NPS nozzle (4.5" O.D.) in the shell. What is the minimum diameter for this insert? A. 4.5" B. 9" C. 12" D. 16.5" - Correct Answer ️️ -D. 16.5" A welder is qualified on a plate in the 3G position. The welder is qualified for what fillet weld position(s)? A. None B. F, H C. F, H, V D. All fillets - Correct Answer ️️ -C. F, H, V When must a shim be placed under an Image Quality Indicator? A. When the area of interest is darker. B. When the area of interest is darker by more than 15%. C. When the area of interest is lighter D. When the area of interest is lighter by more than 15%. - Correct Answer ️️ -D. When the area of interest is lighter by more than 15%. A welder passes a qualification test using a 3 NPS pipe with a groove weld. What is the maximum pipe diameter that the welder is now qualified to weld? A. 2-7/8" B. 4" C. 8" D. Unlimited - Correct Answer ️️ -D. Unlimited A portion of a 1/2" thick shell plate is replaced. What is the closest distance allowed between this plate and the adjacent vertical weld? A. 3" B. 6" C. 10" D. 12" - Correct Answer ️️ -B. 6" Tank Number: T-100 Diameter: 114' Specific Gravity: 0.9 Plate Material: A-283 gr C Shell Corrosion Rate: 0.003"/yr Allowable Liquid Height: 40' Construction Code: API 650 4th Edition A corroded area is found 3' from the bottom and 4" from the nearest weld. The lowest reading in the locally corroded area is 0.368". What is the critical length "L" in the corroded area? A. 12" B. 24" C. 25" D. 40" - Correct Answer ️️ -B. 24" Tank Number: T-100 Diameter: 114' Specific Gravity: 0.9 Plate Material: A-283 gr C Shell Corrosion Rate: 0.003"/yr Allowable Liquid Height: 40' Construction Code: API 650 4th Edition A corroded area is found 3' from the bottom and 4" from the nearest weld. The lowest reading in the locally corroded area is 0.368". What is the required thickness "tmin" in this corroded area?