REVIEW OF API-653 EXAM QUESTIONS AND 100% CORRECT ANSWERS 2025/2026

REVIEW OF API-653 EXAM QUESTIONS AND 100% CORRECT ANSWERS 2025/2026 Replacement shell plate may be circular,oblong,square with rounded corners or rectangular with rounded corners except when: - Answer -an entire shell plate is replaced Shell replacement patch plates shall be welded with butt joints with complete penetration and complete fusion, except as: - Answer - permitted for lapped patch shell repairs Joints in lap-welded shell tanks: - Answer -may be repaired according to the as-built standard of construction A 7/8 thick inch circular butt welded repair plate is installed in the 0.875" thick lower course of a tank. What is the minimum weld spacing required from the vertical and horizontal plate welds of the lower course? - Answer -10"&10" Lapped patch shell repairs are: - Answer -an acceptable form or repairs for butt-welded,lap-welded, and riveted tank shells only when specified by the owner. Lapped patch shell repairs shall not be used on any shell course thickness (original construction) that exceeds____ inch. - Answer -0.500Lapped patch shell repairs shall not be used to replace : - Answer -door sheets or shell plates Lapped patch plates shall not have a thickness less than: - Answer - 0.1875 inches If a lapped patch plate is installed on a tank,what corner(s) may be exempt from being rounded to a minimum radius? - Answer -The joint at the shell to bottom intersection A lapped repair plate is installed across a butt-welded vertical seam.The seam is ground flush and checked by ultrasonics.The inspector must specify the minimum overlap of the patch plate.What minimum distance is selected? - Answer -6 inches beyond the shell seam . Lapped repair plates positioned on