API 653 EXAM QUESTIONS AND ANSWERS 2024

API 653 EXAM

which RP covers of selection basis for cathodic protection? - ANSWERS-API 651



plate thickness in the critical zone of the bottom of a tank in no case shall be less
than - ANSWERS-0.1 inch



the projection of the bottom plate beyond the outside toe of the shelter bottom
weld shall be at least - ANSWERS-3/8 inch



unless special reasons indicate different, the interval between inspections of a
tank (both internal and external) should be determined by - ANSWERS-it's service
history



if inspecting an insulated tank during the five-year external inspection, do you
need to remove all the of the insulation? - ANSWERS-no, you only need to remove
insulation to the extent necessary for a thorough inspection



during a five-year external inspection, to what extent shall be tank grounding
systems inspected? - ANSWERS-visual inspection is required



corrosion rates are known, external UT measurements of a new tank shell shall be
made - ANSWERS-at the lesser of RCA/2N years or 15 years

,when a new tank has no release prevention systems, the interval from initial
service until the initial internal inspection shall not exceed ___ years - ANSWERS-
10



when a tank has a release prevention system consisting of an original nominal
bottom thickness 5/16 inch or greater, what is the initial internal inspection
interval - ANSWERS-12 years



when a tank has an RPS consisting of cathodic protection of the soil side of the
primary tank bottom, which is the initial internal inspection interval - ANSWERS-
12 years



when a tank has an RPS consisting of a thin film lining of the product side of the
tank bottom, which is the initial internal inspection interval - ANSWERS-12 years



when a tank has an RPS consisting of fiberglass reinforced lining of the product
side of the tank bottom, which is the initial internal inspection interval -
ANSWERS-13 years



when a tank has an RPS consisting of cathodic protection plus a thin film lining,
which is the initial internal inspection interval - ANSWERS-14 years



when a tank has an RPS consisting of cathodic Protection Plus fiberglass
reinforced lining, which is the initial internal inspection interval - ANSWERS-15
years

, when a tank has an RPS consisting of a release prevention barrier and a similar
service assessment, which is the initial internal inspection interval - ANSWERS-20
years



when a tank has an RPS consisting of release prevention barrier when a risk-based
inspection was performed, which is the initial internal inspection interval -
ANSWERS-25 years



hobby assessment shall consist of a systematic evaluation of both the ________
and the associated consequence of failure - ANSWERS-likelihood of failure



how many types of Records should an operator keep at all times? - ANSWERS-3,

construction records,

inspection history and repair / alterations history



all you shall joints shall be _________ joints with complete penetration and fusion
- ANSWERS-butt welded



each existing shell joint should comply with - ANSWERS-the as-built standard



who can authorize repair? - ANSWERS-inspector or engineer experience in
storage tank design



the minimum dimension for a replacement shell plate is - ANSWERS-12 inches