Cathodic protection tests or cathodic disbondment tests (CD tests) may be carried out according to various standards. A standard that is frequently used is ISO 15711 with a testing period of 25 weeks.
A number of ASTM standards ASTM G 8, ASTM G 42 and ASTM G 95 or derivative specifications with different testing periods; 24 hours, 48 hours, 30 days or 90 days are common testing periods. The requested temperatures range from room temperature until over 100 °C.
The NORSOK system 7C specification has CD tests for 3 temperatures / temperature ranges. The default is 6 months at room temperature, but in addition there is a test of 4 weeks at a temperature between 50 and 100 °C, and the third option is the high temperature HTCD test, 4 weeks, testing at a temperature between 100 and 180 °C. The temperature gradient over the test panel is 150 °C. In 2014 COT has acquired a laboratory test setup for this high temperature HTCD tests.
Over the years, the demand for paint testing at high pressure and temperature in combination with corrosive gases increases. In various standards and specifications such as ISO 15741, EN 10289, EN 10290, ARAMCO 09-SAMSS-067 APCS 27, [...]