System for testing stress corrosion cracking

A system for testing stress corrosion cracking (SCC), comprising:

• an autoclave having at least one heating element, an outlet port, and a return port, the autoclave being adapted for heating a corrosive fluid;
• a plurality of test sections, each of the test sections having:
• a corrosive cell defining a test chamber;
• an inlet port;
• an outlet port;
• a flow channel extending through the test chamber between the inlet port and the outlet port;
• a central channel extending through the test chamber orthogonal to the flow channel, the central channel being configured for supporting a circumferentially notched tensile (CNT) specimen therein with the notch in the specimen exposed in the flow channel;
• and
• a tension loading assembly adapted for applying a constant tensile stress to the CNT specimen;
• and
• a circulation assembly having a circulation pump, a flow line forming a circulation loop between the outlet port of the autoclave and the return port of the autoclave and a test section line connecting each of the plurality of test sections connected in series, the flow line being in fluid communication with the test section line;
• whereby the system is configured for testing a plurality of specimens for stress corrosion cracking in the presence of a flow of corrosive fluid being circulated by the circulation pump.