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15. Accident Analyses

AP1000 Design Control Document

Table 15A-5

OFFSITE ATMOSPHERIC DISPERSION FACTORS (χ/Q) FOR ACCIDENT DOSE ANALYSIS

Site boundary χ/Q (s/m3)

0

  • 2 hours(1)

Low population zone χ/Q (s/m3)

0 8 24 96

8 hours 24 hours 96 hours 720 h ours

    • 5.1

      x10-4

    • 2.2

      x10-4

    • 1.6

      x10-4

1.0x10-4 8.0x10-5

Note:

1.

Nominally defined as the 0- to 2-hour interval but is applied to the 2-hour interval having the highest activity releases in order to address 10 CFR Part 50.34 requirements.

Tier 2 Material

15A-14

Revision 12

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