ENS 50518
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ENS Event | |
|---|---|
08:45 Oct 8, 2014 | |
| Title | Sodium Hypochlorite Leak with Potential to Enter the Environment |
| Event Description | This notification is being made as a result of notifications to other government agencies. A sodium hypochlorite leak occurred on site at Limerick Generating station on 10/7/14, that had the potential to enter the environment. The leak has been isolated. A flow control valve in the U1 cooling tower chemical treatment system caused the leak. The sodium hypochlorite that leaked was deposited into the onsite Holding Pond. The Holding Pond was being discharged at the time of the leak in accordance with procedures to support normal plant operations. The leak was discovered at 2110 hours0.0244 days <br />0.586 hours <br />0.00349 weeks <br />8.02855e-4 months <br /> [EDT on 10/7/14] and isolated at 2115 hours0.0245 days <br />0.588 hours <br />0.0035 weeks <br />8.047575e-4 months <br />. The Holding Pond discharge was secured at 2125 hours0.0246 days <br />0.59 hours <br />0.00351 weeks <br />8.085625e-4 months <br />. Sampling of the Holding Pond confirmed the presence of sodium hypochlorite. Since the Holding Pond was being released at the time of the leak, there is a potential that greater than 67 gallons of sodium hypochlorite could have been released to the Schuylkill River. This report is being made due to the potential that a reportable quantity of sodium hypochlorite could have discharged to the Schuylkill River while the Holding Pond was releasing during the sodium hypochlorite leak. Evaluations are being performed to quantify this actual volume of sodium hypochlorite that was discharged as a result of the leak.
The licensee has notified the NRC Resident Inspector and state and local authorities. |
| Where | |
|---|---|
Limerick  Pennsylvania (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | |
| Time - Person (Reporting Time:+-1.35 h-0.0563 days <br />-0.00804 weeks <br />-0.00185 months <br />) | |
| Opened: | Chris Giambrone 07:24 Oct 8, 2014 |
| NRC Officer: | John Shoemaker |
| Last Updated: | Oct 8, 2014 |
| 50518 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 540152019-04-21T13:20:00021 April 2019 13:20:00
[Table view]10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Limerick Onsite Non-Work Related Fatality ENS 535562018-08-21T04:00:00021 August 2018 04:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Holding Pond Overflow ENS 528712017-07-25T00:44:00025 July 2017 00:44:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification to the Pennsylvania Department of Environmental Protection ENS 518472016-04-04T17:30:0004 April 2016 17:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Cooling Tower Water Released to a Non-Permitted Outfall ENS 517732016-03-07T13:37:0007 March 2016 13:37:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Fatality Onsite ENS 517492016-02-22T18:11:00022 February 2016 18:11:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Spurious Actuation of One Emergency Siren During Planned Maintenance ENS 505182014-10-08T08:45:0008 October 2014 08:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Sodium Hypochlorite Leak with Potential to Enter the Environment ENS 496912014-01-04T04:00:0004 January 2014 04:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Siren Activation Caused by Equipment Malfunction ENS 486292012-12-28T08:30:00028 December 2012 08:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Communications with All Emergency Planning Zone Sirens ENS 479412012-05-22T10:35:00022 May 2012 10:35:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Emergency Planning Zone Siren Malfunction ENS 478232012-03-19T08:00:00019 March 2012 08:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification to State and Local Agencies Due to Npdes Discharge ENS 477262012-03-09T03:18:0009 March 2012 03:18:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Report of a Single Emergency Siren Actuation ENS 471702011-08-19T14:30:00019 August 2011 14:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Inadvertent Sounding of Emergency Preparedness Zone Siren 2019-04-21T13:20:00 | |
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