Browse wiki
Jump to navigation
Jump to search
100 +
On May 26, 2017 at 0321 (CDT), Control Roo … On May 26, 2017 at 0321 (CDT), Control Room staff questioned air flow and differential pressure in the Main Control Room. The CREFS (control room emergency filtration system) booster fan discharges to the Control Room supply fan suctions. With supply fan flows questionable, reasonable assurance that CREFS would fulfill its safety function could not be established. Engineering confirmed CREFS system flow rate by testing and determined the actual flow was 802 cfm, below the required flow of 810 cfm. Based on this information, CREFS was declared inoperable.</br>CREFS is a single train system. Per 10CFR50.72(b)(3)(v)(D), an 8-hour report is required due to the fact that, at the time of discovery, this condition could have prevented the fulfillment of the safety function of an SSC that is required to mitigate the consequences of an accident.</br>The NRC Senior Resident Inspector will be informed.</br>CREFS being out of service places the plant in a 7-day LCO shutdown action statement. in a 7-day LCO shutdown action statement. +
08:21:00, 26 May 2017 +
52,771 +
12:11:00, 26 May 2017 +
08:21:00, 26 May 2017 +
On May 26, 2017 at 0321 (CDT), Control Roo … On May 26, 2017 at 0321 (CDT), Control Room staff questioned air flow and differential pressure in the Main Control Room. The CREFS (control room emergency filtration system) booster fan discharges to the Control Room supply fan suctions. With supply fan flows questionable, reasonable assurance that CREFS would fulfill its safety function could not be established. Engineering confirmed CREFS system flow rate by testing and determined the actual flow was 802 cfm, below the required flow of 810 cfm. Based on this information, CREFS was declared inoperable.</br>CREFS is a single train system. Per 10CFR50.72(b)(3)(v)(D), an 8-hour report is required due to the fact that, at the time of discovery, this condition could have prevented the fulfillment of the safety function of an SSC that is required to mitigate the consequences of an accident.</br>The NRC Senior Resident Inspector will be informed.</br>CREFS being out of service places the plant in a 7-day LCO shutdown action statement. in a 7-day LCO shutdown action statement. +
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>.
100 +
00:00:00, 26 May 2017 +
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>.
22:15:29, 24 September 2017 +
12:11:00, 26 May 2017 +
true +
false +
0.16 d (3.83 hours, 0.0228 weeks, 0.00525 months) +
08:21:00, 26 May 2017 +
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.