ENS 46904

v t e ENS Event
16:57 May 29, 2011
Title	Offsite Notification Due to an On-Site Sulfuric Acid Spill
Event Description	This notification is for San Onofre Units 2 and 3 and is being made in accordance with 10CFR50.72(b)(2)(xi) to report that on 5/29/2011 at 0957 PDT Government agencies were notified of a sulfuric acid spill. On 5/28/2011 [at] 1440 PDT, during resin bed regeneration operations at the High Flow Makeup Demineralizer (HFMUD), a sulfuric acid transfer was in progress. When process piping was pressurized, a valve on the discharge side of the process pump experienced a diaphragm failure causing a body to bonnet leak. Operators secured the acid transfer. All the sulfuric acid was contained within the bermed area of the HFMUD. Hazardous material teams have contained and cleaned up the spill. Area is secured until repairs can be implemented. All HFMUD operations have been stopped until repairs are completed. On 5/29/2011 at 0926, the hazardous material team determined that this event was reportable to government agencies. The following reports were made: [At] 0957 PDT San Diego Department of Enviornmental Health [was] called with [a] voice message left. [At] 0959 PDT California Emergency Management Agency [was] called. Report number 11-3246. [At] 1008 PDT National Response Center [was] called. Report number 977718. The licensee has notified the NRC Resident Inspector,

ENS 46904 +/-
Where
San Onofre California (NRC Region 4)
Reporting

10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release
Time - Person (Reporting Time:+-1.93 h-0.0804 days <br />-0.0115 weeks <br />-0.00264 months <br />)
Opened:	Douglas Foote 15:01 May 29, 2011
NRC Officer:	John Knoke
Last Updated:	May 29, 2011
46904 - NRC Website
v • d • e

v t e Emergency Notification System
San Onofre with 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release
WEEKMONTHYEAR2023-02-21T22:02:00 [Table view]
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