ML20029B577
| ML20029B577 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 03/04/1991 |
| From: | Greger L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Eliason L NORTHERN STATES POWER CO. |
| References | |
| NUDOCS 9103130034 | |
| Download: ML20029B577 (1) | |
See also: IR 05000282/1991002
Text
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MAR 4 1991
Docket tio. 50-202
Docket lio. 00-3C6
fjorthern States Power Company
ATT!!:
Mr. L. R. Eliason
Vice President, Ituclear
Generation
414 flicollet 11all
Minneapolis, Mli 55401
Gentlemen:
This refers to the routine inspection conducted by Dr. J. House en
Janua ry 7-9, 1591. Our letter dated fet ruary 6,1991, f orwerded the
report of this inspection which was assigned Report lios. LO-282/91002(DRSS);
50-306/9100?(DRSS).
Pane three 01 the report was inadvertently delettd.
Enclosed is the missing page.
We regret any inconvenience this may have
caused,
if you have any questions regarding this matter, please contact Dr. J, House
of tny stuff at (708) 790-6109.
Sincerely,
brf
L
o
T.
g
, Chief
Reactor Programs Dranch
Enclosure: As stated
cc w/ enclosure:
E. L. Watzl, Site Manager
it. Sellman, Plant Manager
DCD/DCD (RIDS)
OC/LFDCB
Resident inspector, Rll! Prairie
Irland
Resident inspector, Rlli Monticello
John W. Ferman, Ph.D.,
tiuclear Engineer, MPCA
State Liaison Officer, State
cf Minnesota
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Program but is considering converting to a Corporate conducted
comparison program. These matters will continue to be reviewed
as part of the routine inspection program,
d.
(Closed) Open Item (50-282/89007-04; 50-306/89007-04).
Licensee
to modify air sampler procedures to incorporate filter train testing
for air inleakage and improve flow rate monitoring during collection
-
periods. The inspector toured 4 of 5 air sampling stations,
reviewed upgraded procedures and observed licensee personnel change
air filters and charcoal cartridges (Section 3).
Filter trains are
leak tested weekly 6nd appeared to be air tight. Air flow regulators
are calibrated monthly. A field rotameter is used to check for air
inleakage and to ucasure flow rate of the filter train before and
after filter changeout.
[perationoftheRadiolooicalEnvironmentalMonitorinaProcram(REMP]
O
3.
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lF N750)
11anagement responsibilities for the REMP were transferred fr:)m the
Environmental Regulatory)Aff airs Department to the Nuclear Regulatory
Services Department (NRS on January 1,1990. The Corporate Health
Physicist (HP) who reports to the Manager, NRS, oversees the REMP.
An associate HP who reports to the Corporate HP is responsible for
sample collection. NRS has installed in-line air sampling holders
and rewritten procedures describing sample changeout, testing and
calibration of the air samplers.
Filter trains are leak tested weekly
during se')le changeout and the air regulators are calibrated monthly
with a calibrated rotameter. During sample changeout, flow readings
are taken before and after filters are changed.
A licensee representa-
tive stated that the field rotameter was not calibrated but was to be
sent out for calibration.
The inspector reviewed the REMP, including the 1989 Annual Radiclogical
Environmental Monitoring Report, and toured 4 of the 5 air sampling
stations. - The Annual Report appeared to comply with the REMP
requirements.
All of the required samples were collected and analyzed,
except as noted in the report, and the results appeared to be
reasonable. The inspector observcd a licensee representative conduct
the weekly sample changeout and test the filter train for operability
and air inleakage. The REMP appeared to be operating satisf actorily.
No violations or deviations were identified.
4.
RitiuminWellWeter(IP92701}
In October 1989, the Minnesota Department of Public Health found low
levels (approxiri.ately 2000 pCi/1) of tritium (H-3) in wells located
adjacent to the Prairie Island Nuclear Generating Station (PINGS).
Thc licensee's evaluation concluded that the plant, which is located
on the Mississippi river upstream of Dam Number 3 and the Vermillion
River, is the H-3 source. The Mississippi water level above the dam
is about 10-15 feet higher than the level of the Vermillion River,
which joins the Mississippi downstream of the dam, with aquifer ficw
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