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1/24

Fukushima -NPS Accident~

~

2011 3 29

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2/24

2011 3 28

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3/24

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4/24

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5/24

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6/24

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7/24

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Type of Containment VesselBWR

(Pressure suppression pool )

PWRLarge Drywell

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9/24

Improved-Mark

PCV

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10/24

Leakage through Flange

0 Lowest Leak Criteria

1.7 0 upper Leak Criteria

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11/24

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Limit Pressure 4.35 3.92kgf/cm 2

Limit Temperature 138 300

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13/24

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14/24

0.5%

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15/24

2

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16/24

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1

3.92kgf/cm 2 138

250 300

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18/24

AM

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19/24

AM

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20/24

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-

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3

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PCV

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3

197910