This article is about Cathodic Protection QC Aramco Questions and Answers for QC Engineers. These questions normally asked in Aramco CBT test of Cathode protection also.
Cathodic Protection QC Aramco Questions and Answers
- When are insulating flanges or joints allowed in cathodic protection systems?
A) Only for off-plot pipelines B) Only for short pipeline sections less than 500 meters long C) Only to limit protective current flow between plant facilities and off-plot pipelines D) None of the above
2. Can insulating flanges or joints be used in a cathodic protection system for a pipeline longer than 500 meters?
A) Yes, but only if the pipeline is short enough B) Yes, but only for off-plot pipelines C) No, they are not allowed for long pipelines D) No, they are never allowed
3. Isolating devices can be installed in any buried or submerged portions of a pipeline.
a) True b) False
4. How many additional impressed current anodes shall be installed within 15 meters of a thrust anchor if impressed current anodes are placed within 50 meters of it?
a) One b) Two c) Three d) Four
5. If impressed current anodes are installed near a thrust anchor, are galvanic anodes required for the thrust anchor?
a) Yes b) No
6. What is the minimum negative pipe-to-soil potential required for cathodic protection?
a) -1.0 volt b) -0.850 volt c) -3.0 volts d) 100 mV polarization shift
7. What is the maximum negative pipe-to-soil potential allowed for cathodic protection?
a) -1.0 volt b) -0.850 volt c) -3.0 volts d) 100 mV polarization shift
8. What is the maximum time allowed for the depolarized state potential to occur?
a) 1 day b) 3 days c) 7 days d) 10 days
9. What is the reference electrode used to measure the negative pipe-to-soil potential?
a) Copper/copper sulfate electrode b) Zinc electrode c) Silver/silver chloride electrode d) Aluminum electrode
10. What is the maximum distance between test stations or risers used for test stations according to the cathodic protection guidelines?
a) 50 meters b) 75 meters c) 100 meters d) 150 meters
11. Which of the following standards discusses the requirements for impressed current anodes for cathodic protection?
a. SAEP-332 b. 17-SAMSS-007 c. SAES-X-600 d. 17-SAIP-50
12. Which of the following standards discusses the requirements for cathodic protection of plant facilities?
a. SAEP-332 b. 17-SAMSS-007 c. SAES-X-600 d. 17-SAIP-50
13. What is the title of the SAEP-332 standard?
a. Impressed Current Anodes for Cathodic Protection b. Cathodic Protection Commissioning c. Cathodic Protection of Plant Facilities d. Inspection Coverage of Cathodic Protection Deep Anode Beds
14. Which of the following is required for engineers who complete cathodic protection designs?
A) Five years of experience in any engineering field B) NACE CP Level 2 qualification C) NACE CP Level 3 qualification D) Verifiable experience in any engineering field
15. What is the minimum structure-to-water potential required for cathodic protection of marine structures, with reference to a silver/silver chloride electrode?
A) Positive 0.90 volts B) Negative 0.90 volts C) Positive 0.50 volts D) Negative 0.50 volts
16. What are the requirements for cathodic protection DC power supply for hazardous areas (maximum Class I, Zone 2)?
A) Compliance with NEC Articles 500 to 504 for hazardous (Class I, Zone 2) areas B) Compliance with NEC Articles 505 to 508 for hazardous (Class I, Zone 2) areas C) Compliance with NEC Articles 510 to 514 for hazardous (Class I, Zone 2) areas D) Compliance with NEC Articles 520 to 524 for hazardous (Class I, Zone 2) areas
Read other Topics of Cathodic Protection QC Notes
Answers:
| 1 | C) Only to limit protective current flow between plant facilities and off-plot pipelines | 2 | C) No, they are not allowed for long pipelines |
| 3 | a) True | 4 | b) Two |
| 5 | b) No | 6 | a) -1.0 volt |
| 7 | c) -3.0 volts | 8 | c) 7 days |
| 9 | a) Copper/copper sulfate electrode | 10 | c) 100 meters |
| 11 | b. 17-SAMSS-007 | 12 | c. SAES-X-600 |
| 13 | b. Cathodic Protection Commissioning | 14 | C) NACE CP Level 3 qualification |
| 15 | B) Negative 0.90 volts | 16 | A) Compliance with NEC Articles 500 to 504 for hazardous (Class I, Zone 2) areas |
Read Also: Cathodic Protection QC Notes of Aramco