U3 Icc Tank Tightness Testing Exam Questions And Answers (Latest Update 2023) Verified Answers

When a steel tank is installed with a galvanic CP system attached, the tank gauges are usually connected through a riser with a dielectric bushing. What is the purpose of that? a. To prevent static discharge b. To minimize effects of noise c. To electrically isolate the tank from the tank gauge d. To prevent water intrusion in the tank {Ans: c. To electrically isolate the tank from the tank gauge}Definition: An observation well is located: a. Outside the tank excavation, but within 25 feet b. Inside the tank excavation, extending 1' below the bottom of the tanks c. Inside the tank excavation, no deeper than 15 feet d. Outside the tank excavation until ground water is reached {Ans: b. Inside the tank excavation, extending 1' below the bottom of the tanks}Oxygen is considered deficient enough to not support fire when it falls below: a. 3% b. 11% c. 14% d. 19.5% {Ans: a. 3%}An automatic line leak detector is defined as a device that: a. Is designed to shut down or dramatically reduce the flow to 3 gallons per hour in a pressurized piping system b. Is designed to detect a leak of 3 gallons per