This article is about Cathodic Protection QC Notes of Aramco for Electrical and Cathodic protection engineers and QC Inspectors who want to to work in middle east in saudi aramco projects and other Industrial Projects.
Cathodic Protection QC Notes of Aramco
This article is about Plumbing qc questions answers which is based on CBT test of aramco. We collected questions who have passed CBT Exam of Aramco Plumbing QC Inspector.
Question 1: For a buried structure with a rectifier rated output of 50 amps, what is the minimum distance required for the anode bed?
A) 25 meters
B) 50 meters
C) 75 meters
D) 100 meters
The correct answer is: C) 75 meters
Question 2: What is the minimum distance required between an anode bed and a buried structure when using a rectifier rated at 35 amps or less?
A) 10 meters
B) 25 meters
C) 35 meters
D) 50 meters
The correct answer is: C) 35 meters
Question 3: What is the minimum distance required for an anode bed to be installed from a buried structure when using a rectifier rated output of 150 Amps?
A) 100 meters
B) 150 meters
C) 225 meters
D) 300 meters
The correct answer is: C) 225 meters
Question 4: Which of the following statements is true regarding the minimum distance of separate adjacent anode beds powered from separate power sources?
A) 25 meters
B) 50 meters
C) 75 meters
D) 100 meters
The correct answer is: B) 50 meters
Question 5: What type of enclosure is required for oil-immersed rectifier units?
A. Type O
B. Type OA
C. Type D
D. Type Z
The correct answer is: B. Type OA
Question 6: What is the minimum distance that a rectifier should be located from a hydrocarbon plant perimeter fence?
A) 10 meters
B) 20 meters
C) 30 meters
D) 40 meters
The correct answer is: C) 30 meters
Question 7: What is the minimum distance a rectifier should be located within a coastline?
A) 100 meters
B) 500 meters
C) 1 kilometer
D) 2 kilometers
The correct answer is: C) 1 kilometer
Question 8: What is the maximum DC voltage requirement of a CP rectifier?
A) 10 VDC
B) 50 VDC
C) 100 VDC
D) 150 VDC
The correct answer is: C) 100 VDC
Question 9: What is the distance requirement for CP access test stations located in paved areas directly over the pipeline?
A) 5 meters
B) 10 meters
C) 15 meters
D) 20 meters
The correct answer is: D) 20 meters
Question 10: What is the recommended frequency of installing CP test stations along a pipeline?
A) Two CP test stations per kilometer
B) One CP test station per one kilometers
C) One CP test station per three kilometers
D) One CP test station per four kilometers
The correct answer is: B) One CP test station per one kilometers
Question 11: What is the minimum mounting requirement of an oil immersed rectifier above ground?
A) 100 mm
B) 200 mm
C) 300 mm
D) Type X
The correct answer is: C) 300 mm
Question 12: What is the minimum above grade mounting requirement for NEMA-rated enclosures for CP rectifiers?
A) 1.8 meters
B) 1.5 meters
C) 2.0 meters
D) 2.5 meters
The correct answer is: A) 1.8 meters
Question 13: What is the minimum installation requirement for the enclosure within the rectifier?
A) 1 meter
B) 2 meters
C) 3 meters
D) 4 meters
The correct answer is: C) 3 meters
Question 14: What is the percentage requirement of circuit breaker rating for the rectifier input current at rectifier rated load?
A) 100%
B) 110%
C) 125%
D) 150%
The correct answer is: C) 125%
Question 15: What is the limit splicing interval of buried main positive cable runs, between rectifier and anode bed junction box?
a) 100 meters
b) 150 meters
c) 200 meters
d) 250 meters
The correct answer is: b) 150 meters
Question 16: Which of the following represents the required installation amount of magnesium anode in pounds?
A) 50 lbs
B) 75 lbs
C) 100 lbs
D) 125 lbs
The correct answer is: C) 100 lbs
Question 17: What is the recommended bonding interval for parallel pipelines?
A) 1 km
B) 5 km
C) 10 km
D) 20 km
The correct answer is: C) 10 km