ML20031A579
| ML20031A579 | |
| Person / Time | |
|---|---|
| Site: | Millstone, Monticello  |
| Issue date: | 08/10/1981 |
| From: | Bradford P NRC COMMISSION (OCM) |
| To: | Dircks W NRC OFFICE OF THE EXECUTIVE DIRECTOR FOR OPERATIONS (EDO) |
| Shared Package | |
| ML20031A577 | List: |
| References | |
| NUDOCS 8109240097 | |
| Download: ML20031A579 (1) | |
Text
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'o UNITED STATES 8
NUCLEAR REGULATORY COMMISSION i
A WASHINGTON, D.C. 20555 f,
,f August 10, 1981 OFFCE OF THE 1
COMMISSIONER 50-343 MEM0 T0: William J. Dircks Executive Director for Operations
)?/3 FROM:
Peter A. Bradford
SUBJECT:
LIQUID R LEASES VIA l'NM0NITORED STORM SEWER (PNO-III-81-67)
This PNG involves another radioactive liquid discharge via an unmonitored storm drain. Are there technical reasons for not continu-ously monitoring these paths since the experiences at the Millstone, Monticello and Tsurga reactors seem to indicate that we should?
cc:
Chairman Palladino Commissioner Gilinsky Commissioner Ahearne Commissioner Roberts Samuel J. Chilk Dennis Rathbun Leonard Bickwit e
~p__-y-4 8109240097 810828 Rec'd O m, g(ff.EDODa te...-
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PRELIMINARY NOTIFICATION f
July 31. 1981 Date:
PRELIMINARY NOTIFICATIQN OF EVEhT OR UNUSUAL.0CCURRENCE--PNO-III-8 l-67 i. ~
~
This preliminary notification constitutes EAR.Y notice of events of POSSIBLE M i
s:fety or public interest significance. The information presented is as init_ially received without verification or evafu~stion and is bacically all that is known by IE staff as of this date.
M M
FACICITY: Northern States Pnwer Company Monticello Nuclear Generating Plant Docket He. 50-263 SUBJECk:
UNPLANNED LIQUID RELEASE N A small.-unplanned, liquid release (slightly exceeding' ;4
- cal specification 4
limits) occurred at approximately 10:00? p.m.
(CDT) on m
- 30,e1981.,The 1Iquid
- was released. from the condensate storage > tank when a-temporary hose connection brcke inside the radwaste building....,The '. water..ran out: of the.radweste ' building cod into a storm sewer.
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..Th2 licensee estimates that about 2,000. gallons were released, most of which was.
absorbed in the ground before reaching 1 the storm scwer, and that about 100 i
gallons was discharged into the river.- The licensee has diked the storm sewer cnd is'In the process of recovering the remaining water.
O 5:mples taken in *.he storm sewer showed 4.2 E-7 uC!/ml 1-131 and 1.4.E-6 uCI/ml I-133,.which excee d the technicol spec 1ficatIon 1imits' for these nuclIdes.
-(1-131 MPC is 3E-7 uCl/ml; l-133 MPC is IE-6 uCI/mi.). River' dilution would
. reduce > the concentrations to below MPC within several-yards of the storm sewer cutlet.
-The licensee issued c. press release at 8:00 a.m. : (CDT)..and is planning a press brief:ng at 11:00 a.m.
(CDT).
There has bee.n'significant local news media interest.
No press release is planned by Region 111 (Chicago) at-this time; Region ill is responding to news media inquiries.
The State of Minnesota and the EPA have been notified.
The Reildent inspectors are reviewing licensee actions:onsite with support by telephone from a Regional Radiatlon Specialist.
~
l Rtglon';lli received notification of this event by telephene from the NRC Watch Of ficer at 10:45 p.m.
(EDT) on 7/30/81. This Information is current as of
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10:30 a.m., July 31, 1981.
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t CORTACT:
P. C. Lovendale L.'R. Greger.
384-2638 384-2644.
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PRELIMINA10f NorrIFICATION 4
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