ENS 42370

From kanterella

Jump to navigation Jump to search

v t e ENS Event
12:00 Feb 23, 2006
Title	Minor Leakage of Wastewater from Transport Truck
Event Description	On February 22, 2006, at 1000 PST, two tankers containing wastewater with trace levels of radioactivity departed San Onofre Nuclear Generating Station (SONGS) Unit 1 Industrial Site for Clive, Utah. Each truck contained about 4500 gallons of water. At about 0400 PST February 23, 2006, SCE was notified by the trucking company [Triad Transport Company] that minor leakage from a valve on top of one of the trucks had been observed. The leakage was observed while the truck was stopped in Parawan, Utah approximately 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> from its destination. The driver of the truck immediately notified his management who traveled to the site, identified the origin of the leak as spray from a valve on top of the truck, relieved the tank pressure from a vent valve, and stopped the leak. Dampness was observed on the ground beside the tanker. Unconfirmed measurements indicate radiation levels are near background. SCE has dispatched a team to the site to coordinate remediation efforts as necessary. The second tanker has arrived at the site in Clive, Utah and no leakage was observed during receipt inspection. The Director of the Utah's Division of Radiation Control and the NRC Resident Inspectors have been notified of this occurrence. At the time of this report, Unit 1 was undergoing decommissioning. The activity from the radionuclides in the entire truck totaled 70.9 mCi, and primarily consisted of Cs-137 (41 mCi), Ni-63 (15 mCi), and Co-60 (5 mCi). The transport company notified the National Response Center. The truck traveled thru 4 States: CA, NV, AZ UT. * * UPDATE FROM C. WILLIAMS TO M. RIPLEY 1607 EST 03/01/06 * * * On February 23, 2006, SCE notified the NRC that a small leak had been identified from a tanker that was transporting wastewater with trace levels of radioactivity from SONGS to Clive, Utah. That incident was reported to the NRC in accordance with 10CFR50.72.(b)(2)(xi) and the Utah Division of Radiation Control. SCE is updating this report to provide the NRC with the following remediation status: 1. SCE has decontaminated the tanker exterior and the leaking flange has been repaired. On February 24, 2006, the tanker completed its trip to the disposal site in Clive, Utah. Enroute, SCE personnel followed the tanker and inspected the flange at planned stops every hour. No leakage was observed and the tanker was received at the disposal facility without further incident. 2. SCE surveyed the truck stop in Parowan and identified two contaminated locations. The first was an asphalt area near the diesel pumps; the second was a gravel area where the truck had parked (about 150 yards from the diesel pumps). All contaminated materials including asphalt, concrete, dirt, and gravel were removed and shipped to the disposal site in Clive, Utah. No detectable levels of licensed material remain at the truck stop. 3. SCE surveyed personnel at the truck stop and determined that one individual had been contaminated. The pants leg of the trucking supervisor who had climbed on top of the truck to stop the leak had been contaminated (SCE took possession of the contaminated garment). There was no contamination on his skin. 4. Approval was obtained from the Utah Division of Radiation Control, the remediated areas of the truck stop were backfilled. 5. SCE is continuing to investigate the cause of the flange leak and will implement appropriate corrective actions. The NRC resident Inspectors have been notified of this update and will be provided with a copy of this update. Notified R4 DO (J. Whitten) and NMSS EO (S. Flanders)

ENS 42370 +/-
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:+3.12 h0.13 days <br />0.0186 weeks <br />0.00427 months <br />)
Opened:	Lee Kelly 15:07 Feb 23, 2006
NRC Officer:	John Knoke
Last Updated:	Mar 1, 2006
42370 - 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]
[ENS list for San Onofre]

Retrieved from "https://kanterella.com/w/index.php?title=ENS_42370&oldid=427505"