REAL-TIME CORROSION CONTROL SYSTEM FOR CATHODIC PROTECTION OF BURIED PIPES FOR NUCLEAR POWER PLANT
| Autor: | Hyun Young Chang, B. T. Lim, Heung Bae Park, Ki Tae Kim, Hae Woong Kim, Young Sik Kim |
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| Rok vydání: | 2015 |
| Předmět: |
Engineering
Petroleum engineering business.industry Multiphysics education Metals and Alloys Structural engineering Nuclear power Surfaces Coatings and Films Cathodic protection law.invention Corrosion law Nuclear power plant Fire protection Electrochemistry Materials Chemistry Water cooling Cast iron pipe business |
| Zdroj: | Corrosion Science and Technology. 14:12-18 |
| ISSN: | 1598-6462 |
| Popis: | Since the operation period of nuclear power plants has increased, the degradation of buried pipes gradually increases and recently it seems to be one of the emerging issues. Maintenance on buried pipes needs high quality of management system because outer surface of buried pipe contacts the various soils but inner surface reacts with various electrolytes of fluid. In the USA, USNRC and EPRI have tried to manage the degradation of buried pipes. However, there is little knowledge about the inspection procedure, test and manage program in the domestic nuclear power plants. This paper focuses on the development and build-up of real-time monitoring and control system of buried pipes. Pipes to be tested are tape-coated carbon steel pipe for primary component cooling water system, asphalt-coated cast iron pipe for fire protection system, and pre-stressed concrete cylinder pipe for sea water cooling system. A control system for cathodic protection was installed on each test pipe which has been monitored and controlled. For the calculation of protection range and optimization, computer simulation was performed using COMSOL Multiphysics (Altsoft co.). |
| Databáze: | OpenAIRE |
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