Page 16 of 29
4.3 BASELINE TESTING
At various points throughout the test program, the test valves were subjected to baseline testing to determine their condition. This was used for comparison of performance characteristics at other points in the program.
The baseline tests were performed at the following points during the conduct of the program:
Initial - before the first thermal aging phase
Post-wear aging - subsequent to both wear aging cycles, prior to the pressurization aging
Post-radiation aging - subsequent to radiation aging exposure
Post-seismic - subsequent to seismic DBE tests
Post-DBE radiation - subsequent to DBE radiation exposure
Post-DBE environmental - subsequent to the environmental DBE exposure
The baseline testing procedure for those specimens with the Nicotef coating is summarized in Table 4.3. Section 5 contains data for those portions of the baseline test relevant to performance of the Nicotef coating. Section 5 also summarizes overall performance during the environmental DBE simulation.