API 653 Baytech closed book practice exam missed questions part 3

Special consideration must be given to what area of the tank bottom with regard to thick-film lining?

A service life of          years should be expected from a properly selected and applied lining system.

When a tank is of welded construction and has significant distortion, weld seams may crack. When cracking is suspected, what is the preferred method of NDE

An impressed current cathodic system is installed; the installing contractor connected the positive connection of the rectifier to the tank. Is this a satisfactory installation?

The base metal goes into solution (corrodes) by releasing electrons and forming positive metal ions. This statement describes what takes place at what component of a corrosion cell?

How can the life of an impressed current anode be increased?

The radiographic film for all junctions of vertical and horizontal joints in new fabrication shall show @ least         of weld length on each side of the vertical intersection.

What are the 2 types of cathodic protection systems most commonly used?

Atmospheric tanks that are designed for not more than 0.5 psig over the static pressure of the liquid contained in the tank are normally tested

Of the following, which is not an option available to the owner/operator if it is not possible to satisfy the requirements of minimum thickness calculations for a welded tank?
A) Repair damaged areas
B) Retire the tank
C) Reduce allowable liquid level
D) Reduce the fill rate so the tank fills slower and applies pressure gradually

In placing the anodes, how is better current distribution and more uniform polarization obtained?

API 650 covers the design, materials, fabrication, erection, and testing of above ground steel storage tanks. What is the maximum internal pressure for tanks not covered by appendix F of this standard?

According to API 650, tack welds