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Oyster Creek inserted a manual reactor scr … Oyster Creek inserted a manual reactor scram due to a loss of cooling to one of its main transformers. All systems responded normally during the reactor scram. The NRC Resident Inspector has been notified. " </br>The manual scram was described as uncomplicated. All control rods fully inserted. No safeties or PORVs lifted during the transient. There were no electrical power issues besides the problem associated with the main transformer cooling. Normal feedwater cooling was maintained to the reactor and decay heat removal is to the main condenser. There were no ESF actions during the transient.</br>The loss of cooling was to one of Oyster Creeks' two main transformers. Power to the transformer cooling system components (oil cooling pumps and cooling fans) was lost when the control power transformer to the cooling system components failed. The licensee manually scrammed because sustained operation at power would not be possible with loss of cooling to the main transformer and operation with one of the main transformers de-energized is also not possible.</br>The licensee will continue to cold shutdown to perform other maintenance activities while shutdown.</br>The NRC Resident Inspector has been notified. NRC Resident Inspector has been notified. +
22:05:00, 25 April 2009 +
45,021 +
20:50:00, 25 April 2009 +
22:05:00, 25 April 2009 +
Oyster Creek inserted a manual reactor scr … Oyster Creek inserted a manual reactor scram due to a loss of cooling to one of its main transformers. All systems responded normally during the reactor scram. The NRC Resident Inspector has been notified. " </br>The manual scram was described as uncomplicated. All control rods fully inserted. No safeties or PORVs lifted during the transient. There were no electrical power issues besides the problem associated with the main transformer cooling. Normal feedwater cooling was maintained to the reactor and decay heat removal is to the main condenser. There were no ESF actions during the transient.</br>The loss of cooling was to one of Oyster Creeks' two main transformers. Power to the transformer cooling system components (oil cooling pumps and cooling fans) was lost when the control power transformer to the cooling system components failed. The licensee manually scrammed because sustained operation at power would not be possible with loss of cooling to the main transformer and operation with one of the main transformers de-energized is also not possible.</br>The licensee will continue to cold shutdown to perform other maintenance activities while shutdown.</br>The NRC Resident Inspector has been notified. NRC Resident Inspector has been notified. +
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Modification date"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
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