Figure 1: summary of maintenance scenarios

1 January 2000

Scenario 1M 2M 3M 4M 5M
Description In-bundle UBHC ASCA every 3 cycles High pH operation High pH & ASCA every 6 cycles Chemical cleaning
CECIL & FOSAR Yes Yes Yes Yes Yes
In-bundle UBHC 3R37, 3R38 No No No No
ASCA No 3R24, 3R27, No 3R24, 3R30, No
3R30, 3R33, 3R36, 3R42
3R36, 3R39,
3R42, 3R45
High pH operation No No From cycle 21 From cycle 21 No
Chemical cleaning No No No No 3R30

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