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At 1100 on 2/17/2009 with D5 Diesel Genera … At 1100 on 2/17/2009 with D5 Diesel Generator (A-Train EDG) out of service for planned maintenance, it was discovered that an isolation had been hung that inadvertently disabled the D5 Fuel Oil Storage Tanks Transfer Pumps. These transfer pumps provide the primary fuel oil supply to D5 EDG Day Tank and the secondary supply to D6 (B Train EDG) Day Tank. With D5 Fuel Oil Storage Tanks Transfer Pumps not functional, their ability to transfer fuel oil to the D6 Diesel Generator (B-Train EDG) Fuel Oil Storage Tanks was disabled. Although D6 had both of its primary fuel oil transfer pumps available with approximately 50,000 gallons of diesel fuel, this left PINGP Unit Two with less than the Tech Spec required 65,000 gallons available to maintain Unit Two EDG operability. Therefore, at 1100 on 2/17/2009 D6 EDG was declared inoperable. Thus, both trains of Unit 2 EDGs were inoperable (safety function was lost) for ~34 hours. 65,000 gallons fuel oil inventory is to ensure the EDGs have enough inventory to mitigate the probable maximum flood which would result in being unable to get new fuel oil on site for ~14 days. There is no flooding predicted per the National Weather Service Advanced Hydrologic Prediction Service. The observed level at Lock & Dam #3 is more than 12 feet below flood stage with river level decreasing the last four days. This isolation had been in place since 0129 on 2/16/2009.</br>At 1145 on 2/17/2009 the 21 and 23 D5 Fuel Oil Transfer Pumps were returned to service and D6 Diesel Generator was declared Operable.</br>This did not affect Unit 1. The licensee informed the NRC Resident Inspector. licensee informed the NRC Resident Inspector. +
17:00:00, 17 February 2009 +
44,859 +
18:28:00, 17 February 2009 +
17:00:00, 17 February 2009 +
At 1100 on 2/17/2009 with D5 Diesel Genera … At 1100 on 2/17/2009 with D5 Diesel Generator (A-Train EDG) out of service for planned maintenance, it was discovered that an isolation had been hung that inadvertently disabled the D5 Fuel Oil Storage Tanks Transfer Pumps. These transfer pumps provide the primary fuel oil supply to D5 EDG Day Tank and the secondary supply to D6 (B Train EDG) Day Tank. With D5 Fuel Oil Storage Tanks Transfer Pumps not functional, their ability to transfer fuel oil to the D6 Diesel Generator (B-Train EDG) Fuel Oil Storage Tanks was disabled. Although D6 had both of its primary fuel oil transfer pumps available with approximately 50,000 gallons of diesel fuel, this left PINGP Unit Two with less than the Tech Spec required 65,000 gallons available to maintain Unit Two EDG operability. Therefore, at 1100 on 2/17/2009 D6 EDG was declared inoperable. Thus, both trains of Unit 2 EDGs were inoperable (safety function was lost) for ~34 hours. 65,000 gallons fuel oil inventory is to ensure the EDGs have enough inventory to mitigate the probable maximum flood which would result in being unable to get new fuel oil on site for ~14 days. There is no flooding predicted per the National Weather Service Advanced Hydrologic Prediction Service. The observed level at Lock & Dam #3 is more than 12 feet below flood stage with river level decreasing the last four days. This isolation had been in place since 0129 on 2/16/2009.</br>At 1145 on 2/17/2009 the 21 and 23 D5 Fuel Oil Transfer Pumps were returned to service and D6 Diesel Generator was declared Operable.</br>This did not affect Unit 1. The licensee informed the NRC Resident Inspector. licensee informed the NRC Resident Inspector. +
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100 +
00:00:00, 17 February 2009 +
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>.
02:12:40, 2 March 2018 +
18:28:00, 17 February 2009 +
true +
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0.0613 d (1.47 hours, 0.00875 weeks, 0.00201 months) +
17:00:00, 17 February 2009 +
Both Emergency Diesel Generators Declared Inoperable After Review of Work Boundary Isolation +
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