ML061450502

E-mail from Ring to Orth Timeline 2004-2005

ML061450502
Person / Time
Site:	Dresden
Issue date:	03/09/2006
From:	Ring M NRC/RGN-III
To:	Steven Orth NRC/RGN-III
References
FOIA/PA-2006-0130
Download: ML061450502 (5)

Text

IL_Steven Orth - Fwd: Timeline 2004-2005 Paae 1 I From: Mark Ring To: Orth, Steven Date: 3/9/06 4:08PM

Subject:

Fwd: Timeline 2004-2005 Steve, This doesn't really answer your question about, "when we (NRC) knew of 2004 Dresden tritium leak and what we did," but it provides more detail on the licensee's timeline. FYI

-Mark

Steven Orth - Timeline 2004-2005 Page 1 From: "DRCI NRC.GOV" <drcl enrc.gov>

To: "MAR@NRC.GOV" <mar@nrc.gov>, "CJP3@NRC.GOVU <cjp3@nrc.gov>

Date: 3/9/06 1:26PM

Subject:

Timeline 2004-2005

Dresden 200406 Tritium Leaks

- Chronoogyof Events 2004 ThrrruM LEAK

a f:Dr sdenStationpersonnel discovered:a small leakl inan undergrund water pipe leadig fom ctor Unit 2/3's safety system toan onsite holdingfank. undwater

monitoringarondi the leak showed'localized elevated levels of tritium.

4 Indctionspoint.to a leakjinthestaion'!s:HPCI system.

a Dresden distributes hIdant 1lluminator(Ne Fl on tIritium leak to station employees.

September4,20 04

-a Valves shut to isolate leak, September 16,0 04:

a Dresden conducts special briefing with all worers (both Exelon and contractors) on key acti'vitiesincludig the osit tritium leak.

S eptember 27,2004 i Dresden issues contract ktoi C to conduct groundwatr assessment.r Octobberl0006, fjj;t0000i00S;:t0205-0400000 o ntegrated Issue Mnem ai completes Draft ReOport.

a Exelon Nuclear issues news release on: titidw le4 in rtsponse toimdia information dlissemninatedby the UiboofCnenedS ts on the leak at Drsden.

C municipaiesto iorm tem of t disibuion of the press releaise.

Octber202004 ork tD pl 2 bldders in the CST-to4HPC pe.

T repirin g is "pipe tigt d work begins to refill thexcation November 10 4-o EelnNclar onuct biefngmeein with 1EPA Director ad staff regardling the:

events andp fo;~~~~Wpi ir ; and grounde

!f;

E t nestig tion.

F: 4dS :i:

E Novemiber 11,2 004 a Dresden distributes Instant Ilunator(ews Fa1shto stin mpyees updating them onlak reparprgrcess and notifyig them of or plan to test neighbors' drhng water wells.

cb Commuiacaons andChemistryemployees hand deliverinformation on tritium leak to 39 homes fin neigh od im a ly south of the station and request permission to sample their drinking water wells. An invitation to a special meeting is also included in the information packet.

November 17,2004 Dresdn holds ei with neigo tdiscuss station activies, inluding status of the tritium leak andres. Individuals:from 9residences attend.'Representatives from EEPA an WIDP arealso I present to answer questions.

November 29,004 a Dresdens PCsystemis returned to serice.

NoVemb~er 30204 a Dresden mailt 14 letr t c e so relsewheruring the winter months asing fer permission to sample their wells.

December 10,2004 o IEPA, 1EMA, M1PH Pject Update Meeting held :in Springfield.

a Dresden mails fl - l to local residents who have not yet had their wells August 22,20051 o Ground trii Pct Update provie to IAinSpneld. Rthat the flown ora ben compleIted:

oMniord grounwater eleations o Sampled storm sewers and monitorng wlls for titium.

a;th sters o

!:'o Install oitoigwlls sWsiteto ie e atigrapy and to provide additional. apIngpins oEtabis'hed pemability of elogicunts.

o Etablished groundwatr contours.

a Defined migrationp wa resultmi i f tiresidential October442005 a Desdeniinvivtesneighbors toSbtteof the Plant ting sheduled for October 18, 2 E E005.

s

October 18, 2005 a lineighbors attend the State of tie Plant Meeting. An update on the tritium issue is provided and questions are answered.