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LOSS OF PLANT COMMUNICATIONS DUE TO SCHEDU … LOSS OF PLANT COMMUNICATIONS DUE TO SCHEDULED MAINTENANCE</br><br></br><br>"Calvert Cliffs will be implementing scheduled maintenance to the plant data network to install a data diode to meet the new cyber security requirements listed in 10 CFR 5.71. This work will require the TSC, OSC and subsequently the EOF to lose normal data flow from the plant data network for a period of approximately 6 to 8 hours. ERDS will also be unavailable during this maintenance. Should an emergency be declared during this period, the Control Room will continue to have the capability to retrieve plant data inputs to assess plant conditions and perform core damage assessment. Control Room Emergency Response Organization personnel will use backup methods already captured in emergency response procedures to disseminate plant parameter data to the effected Emergency response Facilities and NRC during the plant data network outage. MIDAS (Meteorological Data) will continue to be operational at the site."</br><br></br><br>The licensee notified the NRC Resident Inspector.br>
<br>The licensee notified the NRC Resident Inspector. +
13:22:00, 3 February 2012 +
47,632 +
08:22:00, 3 February 2012 +
13:22:00, 3 February 2012 +
LOSS OF PLANT COMMUNICATIONS DUE TO SCHEDU … LOSS OF PLANT COMMUNICATIONS DUE TO SCHEDULED MAINTENANCE</br><br></br><br>"Calvert Cliffs will be implementing scheduled maintenance to the plant data network to install a data diode to meet the new cyber security requirements listed in 10 CFR 5.71. This work will require the TSC, OSC and subsequently the EOF to lose normal data flow from the plant data network for a period of approximately 6 to 8 hours. ERDS will also be unavailable during this maintenance. Should an emergency be declared during this period, the Control Room will continue to have the capability to retrieve plant data inputs to assess plant conditions and perform core damage assessment. Control Room Emergency Response Organization personnel will use backup methods already captured in emergency response procedures to disseminate plant parameter data to the effected Emergency response Facilities and NRC during the plant data network outage. MIDAS (Meteorological Data) will continue to be operational at the site."</br><br></br><br>The licensee notified the NRC Resident Inspector.br>
<br>The licensee notified the NRC Resident Inspector. +
Has query"Has query" is a predefined property that represents meta information (in form of a <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Subobject">subobject</a>) about individual queries and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
00:00:00, 3 February 2012 +
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>.
04:14:34, 20 March 2017 +
08:22:00, 3 February 2012 +
true +
false +
-0.208 d (-5 hours, -0.0298 weeks, -0.00685 months) +
13:22:00, 3 February 2012 +
URL"URL" is a <a href="/Special:Types/URL" title="Special:Types/URL">type</a> and predefined property provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a> to represent URI/URL values.