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API 653 Certification Practice Exam Open Book 68 Questions with Verified Answers,100% CORRECT
API 653 Certification Practice Exam Open Book 68 Questions with Verified Answers 
 
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...