ML11279A177
| ML11279A177 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 09/16/2011 |
| From: | Pantazes J Public Service Enterprise Group |
| To: | Office of Nuclear Reactor Regulation, State of NJ, Dept of Environmental Protection |
| References | |
| 11-0816-202428, LR-E11-0128 | |
| Download: ML11279A177 (3) | |
Text
PSEG Nuclear LLC P.O. Box 236, Hancocks Bridge, NJ 08038-0236 0 PSEG Nuclear LLC SEP 16 2011 LR-E1 1-0128 Administrator of Water Compliance and Enforcement New Jersey Department of Environmental Protection 401 East State Street, 4th Floor East PO Box 422 Trenton, New Jersey 08625-0422 RE:
PSEG Nuclear LLC - Salem Generating Station NJPDES Permit No. NJ0005622 NJDEP Case No. 11-0816-202428 Follow up Report
Dear Sir/Madam:
As a follow up to the call made to the NJDEP hotline and assigned case 11-0816-202428, PSEG Nuclear LLC ("PSEG Nuclear") is submitting this update concerning a reported release of approximately 1-2 gallons of 15% by weight of Sodium Hypochlorite via outfall DSN 488 which discharges stormwater to the Delaware River This release was also reported to the Nuclear Regulatory Commission pursuant to that agency's reporting requirements.
On August 16, 2011 at -20:15 hours, the Operations Shift Manager received a call of a potential release of Sodium Hypochlorite to the Delaware River. The release, reported as approximately two gallons of Sodium Hypochlorite, occurred in front of the Circulating Water (CW) Plant intake.
PSEG conducted an investigation in accordance with our problem identification and resolution process. The summary result of this investigation indicates that 2 gallons of a nominal 15% solution of Sodium Hypochlorite overflowed when the high level switch alarm on a sump failed. The solution traveled to Catch Basin 11 (CB1 1) located approximately 25 feet from the source. The physical configuration of CB1 1 allows for material to be contained in it prior to releasing it to the next location indicated by Manhole 17 (MH-17). Consequently out of the 1-2 gallons of Sodium Hypochlorite that overflowed from the sump, only a portion of the material traveled to MH1 7 and to the next downstream Manhole 13 (MHI13) before discharging to the river. Samples taken immediately after plugging CB1 1 indicated a concentration of 12% Sodium Hypochlorite.
MH1 7 has consistent flows ranging from 200 to 300 gallons per minute of service water pump coolers and service water building sump. Due to NRC mandated security
- h I "
regulations it was not possible to sample MH17. Similarly, MH13 samples were not taken as the high flows result in very fast flushing of that manhole.
The release was immediately eliminated upon discovery with a combination of the plugging of CB1 1 and the closing of the Sodium Hypochlorite feed valve. The approximate start of the release is believed to be 2010 on 08/16/2011. The release was stopped by 2033 on 08/16/2011.with the installation of the CB plug The high level switch alarm on the sump was replaced to prevent future overflows and the Sodium Hypochlorite distribution pipe system upgraded to prevent leaks in the future.
If you have any questions regarding this information, please contact Chris White of my staff at (856) 339-3301.
Sincerely, f
Jeffrey Pantazes
ýManager - Nuclear Environmental Affairs
C NJDEP Southern Enforcement Office One Port Center 2 Riverside Drive, Suite 201 Camden, NJ 08102 Attn: Mr. Steven Mathis U. S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 Delaware Emergency Management Agency Attn.: Janet Chomiszak 165 Brick Store Landing Road Smyrna, DE 19977