ENS 42846
ENS Event | |
|---|---|
19:00 Sep 18, 2006 | |
| Title | Loss of Spent Fuel Pool (Sfp) Cooling |
| Event Description | {{#Wiki_filter:At 1500 on 9/18/06, the 'A' SFP pump was declared inoperable due to abnormal noise. The 'B' SFP pump had previously been declared inoperable at 2330 on 9/12/06 [due to a vibration problem]. These events have resulted in a loss of SFP cooling. Current SFP temperature if 89�F. Per the Technical Requirements Manual, SFP temperature is being verified within limits of less than or equal to 150 �F once per 4 hours, and actions have been initiated to restore one SFP cooling system to OPERABLE status prior to the SFP exceeding 120 �F.
The licensee is attempting to repair both SFP pumps in parallel efforts. In addition, a skid mounted SFP cooling system is being prepared for service. The spent fuel pool temperature was at 80 �F when cooling was lost and has increased to 89 �F at the time this report was made. The licensee has calculated that the SFP cooling will have to be out of service for 48 hours to reach the 150 �F limit. The licensee notified the NRC Resident Inspector.
The purpose of this notification is to retract the ENS report made on 9/18/2006 at 2223 EDT (Event # 42846). The initial report was conservatively made when both trains of spent fuel pool cooling were lost. Ginna reported the situation as an event or condition that could have prevented the fulfillment of a safety function per 10 CFR 50.72 (b)(3)(v)(D). The spent fuel pool cooling system is not credited to mitigate any design basis event, and is not required by the Technical Specifications. The Ginna UFSAR credits the volume of water in the spent fuel pool for providing cooling should forced spent fuel pool cooling be lost. Based on this, ENS report (# 42846) is being retracted." The licensee notified the NRC Resident Inspector. Notified R1DO (Perry). }}[[Event description::Description::{{#Regex_clear:At 1500 on 9/18/06, the 'A' SFP pump was declared inoperable due to abnormal noise. The 'B' SFP pump had previously been declared inoperable at 2330 on 9/12/06 [due to a vibration problem]. These events have resulted in a loss of SFP cooling. Current SFP temperature if 89�F. Per the Technical Requirements Manual, SFP temperature is being verified within limits of less than or equal to 150 �F once per 4 hours, and actions have been initiated to restore one SFP cooling system to OPERABLE status prior to the SFP exceeding 120 �F. The licensee is attempting to repair both SFP pumps in parallel efforts. In addition, a skid mounted SFP cooling system is being prepared for service. The spent fuel pool temperature was at 80 �F when cooling was lost and has increased to 89 �F at the time this report was made. The licensee has calculated that the SFP cooling will have to be out of service for 48 hours to reach the 150 �F limit. The licensee notified the NRC Resident Inspector.
The purpose of this notification is to retract the ENS report made on 9/18/2006 at 2223 EDT (Event # 42846). The initial report was conservatively made when both trains of spent fuel pool cooling were lost. Ginna reported the situation as an event or condition that could have prevented the fulfillment of a safety function per 10 CFR 50.72 (b)(3)(v)(D). The spent fuel pool cooling system is not credited to mitigate any design basis event, and is not required by the Technical Specifications. The Ginna UFSAR credits the volume of water in the spent fuel pool for providing cooling should forced spent fuel pool cooling be lost. Based on this, ENS report (# 42846) is being retracted." The licensee notified the NRC Resident Inspector. Notified R1DO (Perry). }}| ]] |
| Where | |
|---|---|
Ginna  New York (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
| Time - Person (Reporting Time:+3.38 h0.141 days <br />0.0201 weeks <br />0.00463 months <br />) | |
| Opened: | Kyle Garnish 22:23 Sep 18, 2006 |
| NRC Officer: | Bill Gott |
| Last Updated: | Nov 10, 2006 |
| 42846 - NRC Website | |
Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
Ginna with 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
WEEKMONTHYEARENS 428922006-10-09T08:00:0009 October 2006 08:00:00
[Table view]10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident Containment Sump Inoperable When Required by Technical Specifications ENS 428462006-09-18T19:00:00018 September 2006 19:00:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident Loss of Spent Fuel Pool (Sfp) Cooling 2006-09-18T19:00:00 | |