ML20054B132
| ML20054B132 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/12/1982 |
| From: | Fasano A, Moslak T, Shanbaky M Office of Nuclear Reactor Regulation |
| To: | |
| References | |
| PNO-TMI-82-008, PNO-TMI-82-8, NUDOCS 8204160343 | |
| Download: ML20054B132 (2) | |
Text
50320-820408 April 12, 1982 PRE (IMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-TMI-82-08 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance.
The information is as initially received withoot Verifi-cation or evaluation and is basically all that is known by NRC staff on,th'is date8" '
/
Facility : GPU Nuclear Corporation Licensee Emergency ClassiIication: g#
Three Mile Island, Unit 2 X Not Applicable
_q Docket. No. 50-320 p
, h,s
\\;
a
Subject:
ONSITE GROUND WATER MONITORING PROGRAM UPDATE 1
The licensee' reported the analytical results for ground water samples ta om onsi e
test borings in February and March of 1982.
Changes in tritium concentrat n o
a for test borings 2, 3, and 17.
Locations of these borings may be found on thra ed diagram.
A sample taken from test boring 17 on March 23, 1982, contained the highest tritium concentration of any sample taken to date (1,100,000 pCi/1).
The previous highest reading for test boring 17 was 678,000 pCi/l, for a sample taken February 25, 1982.
The previous highest reading for any test boring was for test boring 2, with a level of 954,000 pCi/1, for a sample taken February 12, 1982.
More recent samples from test boring 2 have shown reduced levels of tritium, down to 30,9C0 pCi/l for a sample taken March 23, 1982.
The tritium levels for test boring 3 went from about 2,400 pCi/l on March 9,1982, to 24,700 pCi/l on March 23, 1982.
The licensee has instituted a systematic program to identify the source of the tritium.
At the present time the NRC is independently 4
analyzing water samples taken from these test borings on April 8,1982.
The maximum permissible concentration (MPC) of tritium in unrestricted areas, as required by 10 CFR Part 20, is 3,000,000 pCi/1.
The increased concentrations remains below MPC.
These increased tritium concentrations were only noted in the test borings near the Borated Water Storage Tank.
The samples from aquatic environment in the TMI area did not indicate any apparent increase in tritium concentrations.
Media interest may occur because the licensee plans to issue a press release.
The NRC does not plan to issue a press release at this time.
The Commonwealth of Pennsylvania has been informed.
This preliminary notification is issued for information only and the NRC plans to continue monitoring events as they occur.
The NRC TMI Program Office received notification of this occurrence by continuous onsite reviews and this information was current as of 3:00 PM, today.
A 10 CFR 50.72 re rt was eva as not being necessary.
gwp
Contact:
TM ak 590-1141 M
b ky 590-1140 asao'596-1123 LBarrett 590-1120 Distribution :
Phillips f [ E/W Willste Air Rights H. St.
MNBB Chairman Palladino ED0 NRR IE NMSS ST Comm. Gilinsky PA OIA RES NRR Comm. Ahearne MPA AE0D Comm. Roberts ELD INPO MAIL:
(
SECY NSAC DCS Processing 1
ACRS R:I R:II R:III ADM:DMB CA R:IV R:V OELD:
PDR J. Tourtellotte D0T:(Trans. Only) dh
/
8204160343 820412
,.2 PDR I&E PNO-TMI-82-OOB PDR Q
l'
/FS/ ^-BORI//G H CONCEN7RA770NS l
7 g:p r
' 7*B-/7-3 C
7"A ?
^
?.
e-
{ g*%% ' 0",.
a" u.
. /,'. Q Qds'
,5 0 07'M
~t
. E/VD Of OM
/.SLANO w
1 1_
AUX. BLDG e
<- y fUM{T ?.
,I w
FUEL llANDLWdl REA tor 5W I
O'D O
- u B L D G.
).
s g ('
1 3,escu men.
i sto cs.
9 i
4 h
T i
t