한국전력기술

Task 1: SI will discuss with U.S. nuclear utilities the potential to allow the sharing of information necessary for an effective buried pipe management program with KEPCO E&C.  SI will target U.S. utilities similar in design to Kori Units 1 and 2 (i.e., Kewaunee and Prairie Island, respectively) or other sites with which SI has a strong buried pipe project relationship (e.g., Calvert Cliffs, Nine Mile Point, Ginna, Comanche Peak, Grand Gulf, etc.) that use SI’s MAPProView™ tools for accessing their EPRI BPWorks™ 2.0 buried pipe database information.

Task 2: SI will advise KEPCO E&C on data acquisition methodologies for absent data elements.

Task 3: SI will facilitate plant visits and technical meetings with U.S. utilities to discuss their experience with the development of an effective program for buried piping systems.

The quantity and quality of information integrated into the buried piping program at Kori will probably impact the usefulness of the program.  An interview process with a buried piping systems engineer at nuclear power plants in the U.S. will be used to augment the data beyond any original design and construction information discovered in the plant’s records (Kori Units 1 and 2).  The type of data to be reviewed with these site system engineers may include(If it is available by plant staffs):

• Latest buried pipe program documentation.

• List of all buried systems within the management.

• System names, numbers and system engineer contact information.

• If possible, yard drawings showing the physical location for buried piping in the plant (isometric drawings are preferred).

• Design specification information that provides details on materials of construction, rating, coating type, etc.

• Piping class/designation documentation.

• Buried Piping System deion documents.

• Operational data for each system: fluid, pressure (maximum and average), temperature (maximum and average), flow rates (maximum and average).

• All history data for leaks, repairs, replacements, monitoring equipment, etc.

• Most recent cathodic protection design and monitoring data (i.e., rectifiers and test stations) or survey information.

• Most recent measurement data for:

o water chemistry data for buried piping systems

o soil survey inspection information with clear references to sampling location in plant

o visual inspection reports for buried piping systems

o Other NDE reports for buried piping – UT, GWUT, BEM, EMAT, coating surveys, etc.