ML101620055

Entergy Condition Report CR-RBS-2008-06385

ML101620055
Person / Time
Site:	River Bend
Issue date:	11/05/2008
From:	Michura B Entergy Corp
To:	Office of Information Services
References
CR-RBS-2008-06385, FOIA/PA-2010-0209
Download: ML101620055 (3)

Text

Entejry CONDITION REPORT CR-RBS-2008-06385 .

Originator: Michura,Broughton T Originator Phone: 5696 Originator Site Group: RBS Tech Chemistry Staff RBS Operability Required: Y Supervisor Name: Hallaran II,Kenneth S Reportability Required:%Y Discovered Date: lr10-5'1f2'06 0:10 Initiated Date: 11/05/2008 15:08 Condition

Description:

Sampling of ARV PIT #2 for an Environmental release sample prior to pumping out the pit to allow work, Co-60 was identified with a value of 194 pCi/Kg (or 1.94E-07uCi/g). The following components are identified as being in the pit:

ICWS-ARV8, IMWS-ARV2, and IWTL-ARV4.

in the mud.

Immediate Action

Description:

Notified Chemistry/ESG/Rad Protection management of the results. The Re-sample confirmed the present of Co-60 1.87E-07 uCi/g in the mud. Tritruim is being counted. Sampled the soil around the pit area found only natural isotopes.

Suggested Action Desciption:.

TBD Attachments:

Condition Description gamma spectrum

• USER GENERATED PDF: 1.1/05/008 15:29:42 Immediate Action Description resample gamma spectrum soil around west side of pit east side of pit

..USER GENERATED PDF :..1105/008. 15:29:42 - -.- -

Condition Reportription USER GENERATED PDF: 11/05/008 15:29:42 Condition Reportription USER GENERATED PDF: 11/05/008 15:29:42 Condition Reportription USER GENERATED PDF: 11/05/008 15:29:42 Condition Reportription USER GENERATED PDF: 11/05/008 15:29:42

Grant Larkin From: ZABASKI, STEPHEN. J[SZABASK@entergy coml Sent. Wednesday, NovembeM'7 2008 4:34 PM To: Grant Larkin

Subject:

FW: AR PIT #2 samples Importance: High Steve.Zabaski Sr. Nuclear Chemistry Specialist giiergy - River 8end Statior 8558-47111 (225)3814Th1 From- ZABASKI, STEPHEN .I Sent: Wednesday, November 05,, 2008 16:16 To: LARMN, GRANT

Subject:

FW. AR PIT #2 samples Importance! High Steve Zabaski Sr. Nuclear Chemistry Specialist Entgrgy - River Bend Station 8-5-5.8-4711 / (225)381-47V1 1' From: MICHURA, BROUGHTON T Sent: Wednesday, November 05, 2008 15:26 To: HEATH, ROBERT W; SPELL, WILLIAM H; HOLLAND, WARREN K; HUFFSTATLER, VICTOR; ZABASKI, STEPHEN J;

-RAYMOND[-MICHAEL-R;-HALL-ARAN,-KEN ..

cc: Wilson, Lynn Barrow; ROBINSON, ARTHUR; HILLIARD, ROBERT W

Subject:

RE: AR PIT #2 samples Importance: High RBS-CR-2008-06385 Sampling of ARV PIT #2 for an Environmental release sample prior to pumping out the pit to allow work, Co-60 was identified with a value of 194 pCi/Kg (or 1.94E-07uCi/g). The following components are identified as being in the pit: ICWS-ARV8, IMWS-ARV2, and I WTL-ARV4.

Notified Chemistry/ESG/Rad Protection management ofthe results. The Re-sample confirmed the present of Co-60 I87 pCiIK-(o 1.87E-07 uCi/g) inthe mud. Tritium is being counted- Sampled the soil around the pit area found only natural isotopes.

Update Tritium = 2094.61 pCi/L or2.09E-6 uCi/ml BUDDY MICHURA RBS REMP LAB 225-381-5696 x-569 6 1

'I

/ Offsite Notification of Tritium Identified in Water Samples from Piping Leak This is a report of a situation, related to the protection of the environment, for which a notification to other government agencies is being made, as described in 10CFR50.72(b)(2)(xi).

On January 17, 2008, at approximately 1300 hours0.015 days <br />0.361 hours <br />0.00215 weeks <br />4.9465e-4 months <br />, site environmentalmonitoring personnel at River Bend Station completed analysis which confirmed the presence of tritium in water samples taken from a piping leak that occurred on January 16, 2008, on plant property. The source of the tritium was from water that had been treated in the liquid radwaste system and was suitable for release. The Louisiana Department of Environmental Quality and other state and local officials are being notified in accordance with!th*h volun1taryNEI groundwater protection initiative.

The following is a summary of the events that led up to the identification of tritium in the water sample.

On January 16, 2008, at approximately 1750 hours0.0203 days <br />0.486 hours <br />0.00289 weeks <br />6.65875e-4 months <br /> with the plant shutdown in Mode 5 (Refueling), River Bend Station personnel identified a water leak from a cooling tower blowdown line. The design of this system takes water from the plant's cooling tower basin. This water mixes with treated water being discharged from the liquid radwaste system. The diluted blowdown is then discharged to the Mississippi River.

Plant operators received a low blowdown line flow alarm and immediately terminated the discharge of water from the liquid radwaste system. The cooling tower blowdown pumps were also subsequently stopped. The leak was caused by a failure of the blowdown piping, The-leak-was located inside-the ownercontrolled-area near the plant's cooling towers.

Based on the location of the leak, the water drained to a nearby storm drain and into East Creek (Outfall 3). East Creek exits the plant site and discharges to the Mississippi River.

The volume of the spill has been estimated to be less than 720 gallons of water from the radwaste system. This water had been treated and was suitable for release. Additional clean water from the cooling tower basin mixed with the water from the liquid radwaste system and was released. The analysis of a water sample, taken at the discharge point to East Creek determined that the samples contained 28,042 Pico Curies per liter (pCi/1) tritium. The NRC repor-ting level 'for a non-diikn water .pathway is '30,000 pCi/I. -CJL Samples taken directly at the location of the leak contained 129, 456 pCi/I tritium. The release has no potential to impact the health and' safety ofthepublic. RBS personnel are investigating the cause of the leak and will not restore blowdown until action is taken to prevent further occurrence.