ML060970146

Notice of Elevated Tritium Levels in On-Site Monitoring Wells

ML060970146
Person / Time
Site:	Braidwood
Issue date:	11/30/2005
From:	Haeger A Exelon Generation Co
To:	Office of Nuclear Reactor Regulation
References
FOIA/PA-2006-0115, FOIA/PA-2010-0209
Download: ML060970146 (3)

Text

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-;AS REQUIRED, PRINT ISSUE REPORT AND PROVIDE TO YOUR SUPERVISOR**

Note: This is your only notice. You will not have an opportunity to print this confirmation later.

Exelon Nuclear Issue -Statement of Confirmation Issue It: 0042C806 Originator: ALLAN Ri-IAEGER Submil Date: November 30, 2005 Basic Information C~(z Qt~ cuirek/7 1¶ ,

Atfected Facility: f3raidwood i-Ltv TY VJO 04) -

Dscv Date: 111D0/2005 11:50

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How Discovered Codfo: 1102 Event Date: 11130/2005 11:50 Affected Unit: 00 Affected Sys:

Subject:

ELEVATED TRITIUM LEVELS IN ON-SITE MONITORING WELLS Required Information Condition

Description:

Elevated levels of tritium have recently been identified in certain on-sito groundwater sampligrig wltts.

iie exact source has not been located nor has theisource boon letermined to be active or historical.

Immediate actions taken: An issue management team has been formed loaddross this Iisturi.T1w, team will address characterization of tIhe extent of Ih iclovated trilium levels, Including the potential for 6levaltec levels off-

.site: ktcntiticvitibn ancl elimination of tlue source il still activo; ronmediationl of lliu allected areas; communriications wilh govenimntil agencies antl any potenitially flectld menithers ol lile public; andl reilulatory Interface.

nelcommncilalion for nction: The issues inanagemenl team will address tIe Iminediale aciions requiretl for Ihis Issue. A rool cause should be initiatod to document the Immediate actions, as well as.to capture thecatiso, addilional extent

.of rondition investigations, and correclive aclions lodlirevent r6cuirren'ce. Also, the stalion's documentation of provious teaks in accordance with 10 cl-rA 50.75(g) noeds to be reviewud.

Supervisor Verbally John Moser Contacted Optional Additional Information What activities, processes, or Theoleovated Ievels were dis-overcd in monitoringj wolls thlit wore recontily instatlled o provide procedures were Involved? enhanced ground water monitoring capability.

.Vlly did IIt(e condiltion

• Unkiiowin. It Is believoetlIhe source may be from historical vacuuin breal:er leaks, but this noeds lo he 1appem? r*confirmed.

Whai are tc conr equencs? UindOesired elevated IritiLori levels on silo property. Potential for tlhso eColited levels to have fnic rated ofl-site.'

Any proceduiral requirements None.

.impacted? -

Identify any advers& physical As described above.

conditions:

List of K~nowledgeable John Moser Indivicimmzls: Jim Gosnell Dale Ambler Is thtis a repeal or sImilar The discovery is part ot an expanded sampling programn as discussed above.

condition?.

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PIF # : A2000-04281 ORIGINATOR

Title:

Failed Circ Water Blowdown Vacuum Breaker Caused Unplanned Flooding Outside of the Power Block Event Date: 11/06/2000 Event Time: 02:30 PM Discovery Date: 11/06/2000 Discovery Time: 03:00 PM Unit: 0o Unit Mode: 1  % Power : System: bW EPN; OCW135,OCW136 Location: OTHER

.OCCUREDIDISCOVERED WHILE PERFORMING:

AR I: WR 4: WRTASK#:

SURV #: RWP # ORI/RIN #t:

OOS #: PCE #: OTHER* Followup inspection OTHER DESCRIPTION Circ Water blowdown corridor-east of plant PROBLEM DESCRIPTION I RECEIVED A CALL FROM THE ILLINOIS ENVIRONMENATAL PROTECTION AGENCY (BILL PAPADAKIS) ABOUT A REPORT OF WATER STANDING IN THE DITCH AT SMILEY FROAD. HE SAID THIS HAS BEEN THERE FOR A WHILE AND WE HAVEN'T HAD ANY RAIN UNTIL TODAY. HE ASKED IF I HAD ANY IDEA WHERE IT MIGHT BE COMING FROM. I SAID I DIDNT KNOW BUT WOULD LOOK INTO IT AND GET BACK TO HIM.. I NOTIFIED CAL WALRATH (2202) OF THE CALL AND SAID I WAS GOING OUT TO LOOK, AND THAT I SUSPECTED IT MAY BE A VACUUM BREAKER PROBLEM ON THE BLOWDOWN LINE, WHEN I APPROACHED THE VACUUM BREAKER (CONTAINING VALVES OCW135 &0CW136),' I NOTICED WATER POURING OUT FROM THE MANHOLE COVER. THE ENTIRE AREA WAS SATURATED. UPON ARRIVAL BACK AT THE PLANT, I UPDATED THE OCC WITH THE RESULTS. ARRANGEMENT BEGAN TO PUT TOGETHER THE APPROPRIATE WORK PACKAGES AND OPERATING BEGAN LOOKING INTO ISOLATION OF THE BLOWDOWN FLOW.

KNOWLEDGEABLE PERSONS: Louis Rhoden,n C Carl D Dunn, M Mark T , I Bill Vdndermyde Trushelm, IMMEDIATE ACTION TAKEN I NOTIFIED BILL POPADAKIS (IEPA) OF WHAT I HAD FOUND. I EXPLAINED THE SOURCE OF THE WATER AND A DESCRIPTION OF THE AREA. HE STATED THAT HE WOULD NOT NEED.ANYWRITTEN FOLLOW UP AT THIS TIME AND SINCE THE WATERWAS CONTAINED IN THE DITCH, WE DID NOT NEED TO SAMPLE. THERE WERE NO NPDES PROBLEMS. I TOLD HIM I WOULD UPDATE HIM WEDNESDAY MORNING. OPERATING FOLLOWED UP BY SHUTTING DOWN BLOWDOWN FLOW.

AR #: WR Rt: WR TASK#:

PROCEDURE# ER #:

TIF/TRR #:

HOLD TAG hi: REJECT TAG # :

ORIGINATOR: Joseph Tidmore EXT: '2299 DEPT: OCH ORIGINATED DATE: 11107100