This article is about Cathodic Protection QC Supervisor Question Answers for Engineers and QA QC Inspectors.
Cathodic Protection QC Supervisor Question Answers
- Which of the following statements is correct regarding cathodic protection for marine structures?
a) The resistivity of seawater is always assumed to be 17 ohm-cm for calculation purposes. b) The resistivity of seawater must be measured at the design location for accurate calculation of cathodic protection requirements. c) The resistivity of seawater is not a factor in the calculation of cathodic protection requirements for marine structures.
2. Which SAES standard governs the requirements for cables and field wiring used in remote monitoring systems?
a) SAES-X-600 b) SAES-P-104 c) SAEP-332 d) 17-SAMSS-007
3. What is the purpose of SAES-P-104?
a) To govern the design and installation of cathodic protection systems b) To provide guidelines for the inspection of pipelines c) To govern the requirements for cables and field wiring used in remote monitoring systems d) To provide specifications for impressed current anodes
4. What are RMUs in the context of cathodic protection power supplies?
a) Remote Management Units b) Remote Monitoring Units c) Remote Measurement Units
5. What document outlines the requirements for RMUs for cathodic protection power supplies?
a) 17-SAMSS-007 b) 17-SAMSS-018 c) SAES-X-600
6. What is the purpose of RMUs in cathodic protection systems?
a) To generate protective current b) To monitor the effectiveness of cathodic protection c) To provide power to the anodes
7. What is the minimum structure-to-water potential required for cathodic protection with reference to a silver/silver chloride electrode?
a) Positive 0.90 volt b) Negative 0.90 volt c) Positive 1.0 volt d) Negative 1.0 volt
8. What is the minimum design life for a cathodic protection system using galvanic anodes only?
a) 5 years b) 20 years c) 25 years Answer:
9. What is the minimum design life for a cathodic protection system using impressed current anodes?
a) 5 years b) 20 years c) 25 years Answer:
10. What value should be assumed for seawater resistivity in cathodic protection design calculations if no measurements are taken at the design location?
a. 20 ohm-cm b. 17 ohm-cm c. 14 ohm-cm d. 11 ohm-cm
11. Why is it important to accurately determine the seawater resistivity in cathodic protection design calculations?
a. To ensure the system is not overprotected b. To reduce the cost of the cathodic protection system c. To minimize the use of sacrificial anodes d. To maximize the life of the cathodic protection system
12. Who should complete cathodic protection designs according to Section 5.1.1?
a. Engineers with a minimum of five years experience in any field b. Engineers with a minimum of five years experience in cathodic protection design and NACE CP Level 3 qualification c. Technicians with NACE CP Level 2 qualification d. Anyone with a relevant engineering degree
13. What is the minimum industry certification level required for field measurements, according to Section 5.1.2?
a. NACE CP Level 3 b. NACE CP Level 2 c. NACE CP Level 1 d. NACE CP Level 4
14. Who needs to review and approve proposed construction drawings and related cathodic protection design information, according to Section 5.2.1?
a. Proponent cathodic protection organization and CSD b. Only the Proponent cathodic protection organization c. Only CSD d. The design agency’s own engineers
15. What information should the design package submitted for review contain, according to Section 5.2.3?
a. The scope of work and all calculations required for the project b. Full size Index “X” CP drawings only c. Only cathodic protection equipment details d. Full size Index “X” CP drawings, all calculations and field data required for design compliance, and CP equipment details, among other information
Q. Which aramco standards are used in cathodic protection?
SAES-X-300 – Cathodic Protection of Marine Structures.
SAES-X-400 – Cathodic Protection Buried Pipelines.
SAES-X-500 – Cathodic Protection for vessel and tanks internals.
SAES-X–600 – Cathodic Protection for Plant Facilities.
SAES-X-700 – Cathodic Protection of Onshore Well Casings.
SAES-X-800 – Cathodic Protection for Existing Reinforced Concrete Structures.
Read Also: Cathodic Protection of Buried Pipelines and Download SAES-X-400 PDF
Read Also: Cathodic Protection All QC Question Answers.
Answers:
| 1 | Ans: b | 2 | b) SAES-P-104 |
| 3 | c) To govern the requirements for cables and field wiring used in remote monitoring systems | 4 | b) Remote Monitoring Units |
| 5 | b) 17-SAMSS-018 | 6 | b) To monitor the effectiveness of cathodic protection |
| 7 | b) Negative 0.90 volt | 8 | c) 25 years |
| 9 | b) 20 years | 10 | b. 17 ohm-cm |
| 11 | a. To ensure the system is not overprotected | 12 | b. Engineers with a minimum of five years experience in cathodic protection design and NACE CP Level 3 qualification. |
| 13 | b. NACE CP Level 2 | 14 | a. Proponent cathodic protection organization and CSD |
| 15 | d. Full size Index “X” CP drawings, all calculations and field data required for design compliance, and CP equipment details, among other information |
For more Knowledge: Cathodic Protection QC Notes of Aramco