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15. Accident Analyses

AP1000 Design Control Document

Table 15A-7

CONTROL ROOM SOURCE/RECEPTOR DATA FOR DETERMINATION OF ATMOSPHERIC DISPERSION FACTORS

Horizontal Straight-Line Distance to Receptor (m)

Plant Vent PCS Air Diffuser

55.7 71.3

Containment Shell (Diffuse Area Source)

Same as receptor elevation (19.9 m or 1.5 m)

Fuel Building Blowout Panel

17.4

Fuel Building Rail Bay Door

1.5

Release Elevation

Source

Note 1

Description

(m)

Steam Vent PORV/Safety Valves

Condenser Air Removal Stack

17.1 19.2 7.6

Control Room

Annex Building

HVAC Intake

Access

(Elevation 19.9 m)

(Elevation 1.5 m)

39.6

76.8

32.3

68.9

11.0

47.2

Comment

Note 2

50.0

89.7

52.4

92.1

18.3

48.8

19.8

44.1

63.0

59.9

Note 3

Note 3

Note 3

Notes:

  • 1.

    All elevations relative to grade at 0.0 m.

  • 2.

    For calculating distance, the source is defined as the point on the containment shell closest to receptor.

  • 3.

    Vertical distance traveled is conservatively neglected.

Tier 2 Material

15A-17

Revision 12

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