API 653 SECTION 6 EXAM 100% QUESTIONS WITH CORRECT ANSWERS 2024

The purpose of in-service inspections of AST's is to assure : - ANSWERS continued tank integrity. What type of inspection may be done by owner/ operator personnel and/or authorized inspectors? - ANSWERS Routine in-service inspection The external condition of storage tanks shall be monitored by close visual inspection from the ground on a routine basis.This inspection can be done by owner/operator personnel,and can be done by the other than Authorized Inspector. The interval of such inspections shall not exceed: - ANSWERS 1 month All tanks shall be given a visual external inspection by an Authorized Inspector, at least every: - ANSWERS 5years or at RCA/4N years,whichever is less External ultrasonic thickness measurements of the shell, when used and when the corrosion rate is not known, are taken at intervals not to exceed: - ANSWERS 5 years Who assures the competency of the personnel performing cathodic protection surveys ? - ANSWERS Owner/ operator A candidate tank is: - ANSWERS A tank for which corrosion rates are not known Two reasons for an internal inspection of an aboveground storage tank are to ensure that the : - ANSWERS bottom is not severely corroded and to gather data on the minimum bottom & shell thickness Who assures the quality and completeness of NDE results obtained during a formal internal inspection? - ANSWERS The API authorized inspector & competent NDE person If an internal inspection is required solely for the purpose of determining the condition and integrity of the tank bottom, the internal inspection: - ANSWERS must be made only after the tank is removed from service and readied for entry The initial inspection interval for an aboveground storage tank shell not exceed _____ years (excluding leak protection, corrosion mitigation or containment safeguards ). - ANSWERS 10 A tank's bottom is inspected. What thickness must the bottom plate be at the next inspection ? The tank bottom/foundation design has no means for detection and containment of a bottom leak. - ANSWERS 0.10 inches What is the maximum subsequent internal inspection interval for an AST where the Corro Procedure is used & there is no release prevention barrier (RPB)? - ANSWERS 20 What is the maximum subsequent inspection interval for an AST using corrosion rate procedure where tank has proper Release Prevention Barrier(RPB)? - ANSWER