ML16341C521: Difference between revisions
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{{#Wiki_filter:IINNDDIIAANNAA AANNDD MMIICCHHIIGGAANN PPOOWWEERR DD.. CC.. CCOOOOKK NNUUCCLLEEAARR PPLLAANNTT UUPPDDAATTEEDD FFIINNAALL SSAAFFEETTYY AANNAALLYYSSIISS RREEPPOORRTT Revision: 23Table: 9.10-1 Page: 1 of 1 CONTROL ROOM VENTILATION SYSTEM MALFUNCTION ANALYSIS COMPONENT MALFUNCTION COMMENTS AND CONSEQUENCES 1. Normal Intake Dampers Failure to close Two dampers in series ensure isolation of outside air normal intake. Failure to open Parallel dampers ensure outside air intake opens. 2. Pressurization/Cleanup Intake Dampers Fully open or multiple dampers open One damper partially open is correct alignment. A single failure may result in one damper fully open or 2 dampers partially open. Other failures are not considered credible. 3. Pressurization/Cleanup Recirculation Damper Failed to closed position All air flowing through the filter is from the intake and air cleanup is limited to a single pass. Control Room dose consequences may increase. The position of the recirculation damper is administratively controlled so it does not need to change position in response to a radiological accident. | {{#Wiki_filter:IINNDDIIAANNAA AANNDD MMIICCHHIIGGAANN PPOOWWEERR DD.. CC.. CCOOOOKK NNUUCCLLEEAARR PPLLAANNTT UUPPDDAATTEEDD FFIINNAALL SSAAFFEETTYY AANNAALLYYSSIISS RREEPPOORRTT Revision: 23Table: 9.10-1 Page: 1 of 1 CONTROL ROOM VENTILATION SYSTEM MALFUNCTION ANALYSIS COMPONENT MALFUNCTION COMMENTS AND CONSEQUENCES 1. Normal Intake Dampers Failure to close Two dampers in series ensure isolation of outside air normal intake. Failure to open Parallel dampers ensure outside air intake opens. 2. Pressurization/Cleanup Intake Dampers Fully open or multiple dampers open One damper partially open is correct alignment. A single failure may result in one damper fully open or 2 dampers partially open. Other failures are not considered credible. 3. Pressurization/Cleanup Recirculation Damper Failed to closed position All air flowing through the filter is from the intake and air cleanup is limited to a single pass. Control Room dose consequences may increase. The position of the recirculation damper is administratively controlled so it does not need to change position in response to a radiological accident.}} | ||
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Revision as of 03:47, 19 May 2018
| ML16341C521 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 10/24/2016 |
| From: | Indiana Michigan Power Co |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML16336A263 | List:
|
| References | |
| AEP-NRC-2016-42 | |
| Download: ML16341C521 (1) | |
Text
IINNDDIIAANNAA AANNDD MMIICCHHIIGGAANN PPOOWWEERR DD.. CC.. CCOOOOKK NNUUCCLLEEAARR PPLLAANNTT UUPPDDAATTEEDD FFIINNAALL SSAAFFEETTYY AANNAALLYYSSIISS RREEPPOORRTT Revision: 23Table: 9.10-1 Page: 1 of 1 CONTROL ROOM VENTILATION SYSTEM MALFUNCTION ANALYSIS COMPONENT MALFUNCTION COMMENTS AND CONSEQUENCES 1. Normal Intake Dampers Failure to close Two dampers in series ensure isolation of outside air normal intake. Failure to open Parallel dampers ensure outside air intake opens. 2. Pressurization/Cleanup Intake Dampers Fully open or multiple dampers open One damper partially open is correct alignment. A single failure may result in one damper fully open or 2 dampers partially open. Other failures are not considered credible. 3. Pressurization/Cleanup Recirculation Damper Failed to closed position All air flowing through the filter is from the intake and air cleanup is limited to a single pass. Control Room dose consequences may increase. The position of the recirculation damper is administratively controlled so it does not need to change position in response to a radiological accident.