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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

tests

  • 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.

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