NC0007064_2017 Discharge Channel Tritium Summary_20180524

bis DUKE Brunswick Nuclear Plant
P.O.Box 10429
ENERGY® Southport,NC 28461
MAY 2 4 2018
Serial: RA-18-0034
IVEDIDENRIDWR
Mr. Tom Belnick 1 2�18
Supervisor, Complex Permitting Unit JUN
Division of Water Resources RECE
ources
NC Department of Environmental Quality Water �g Secton
1617 Mail Service Center Permitting
Raleigh, NC 27699-1617
Subject: Brunswick Steam Electric Plant, Unit Nos. 1 and 2
2017 Discharge Channel Tritium Summary
Dear Mr. Belnick:
This letter fulfils the Brunswick Steam Electric Plant's (BSEP) agreement to provide your office
with summary information regarding concentrations of tritium in discharges from the plant.
Duke Energy Progress, LLC, is providing your office with a summary page containing analytical
data regarding tritium concentrations in conjunction with the development and submittal to the
U.S. Nuclear Regulatory Commission (NRC) of the BSEP Annual Radiological Environmental
Operating Report. This information is being provided with the understanding that it is generated
pursuant to the requirements of the nuclear operating licenses issued by the NRC to the plant
and is not a requirement of the NPDES program.
If there are any questions please contact Mr. Don Safrit, at [phone] or Mr. Marty
McGowan, at [phone].
Sincerely,
Karl Moser
Plant Manager
Brunswick Steam Electric Plant
Enclosure: 2017 BSEP Effluent Tritium Sampling and Data

2017 BSEP Effluent Tritium Sampling and Data
Monthly samples are collected upstream of the ocean discharge pumps which pump water from the
effluent channel into the Atlantic Ocean. The samples are collected over a month time period using a
composite sampler with, typically, 50 milliliter aliquots being collected every 4 hours. Two (2) of the
twelve samples from the effluent channel indicated the presence of tritium. The maximum tritium
concentration was 433 pCi/L, which was expected due to plant operations water movement plans at
the time of sampling.
2017 BSEP Effluent Tritium Data
Sample Date Tritium Concentration (pCi/L)
1/18/2017 239
2/16/2017 433
3/16/2017 <LLD
4/16/2017 <LLD
5/19/2017 <LLD
6/14/2017 <LLD
7/16/2017 <LLD
8/17/2017 <LLD
9/14/2017 <LLD
10/17/2017 <LLD
11/14/2017 <LLD
12/15/2017 <LLD
LLD - Lower Limit of Detection
2017 BSEP Discharge Channel Tritium
—0—Discharge Channel f Water Quality Criterion
21000
20000 11 • ■ ■ ■ ■ ■ ■ ■ ■ ■ ■
19000 18000
17000
16000
15000 14000 —
13000
d 12000
11000
10000
Lg. 9000
8000 }
7000
6000 i _.--
5000 --
4000
3000 -
2000
1000
0 ♦ , ♦ ♦ , ♦ ♦ r ♦ ♦ , ♦1/1 2/1 3/1 4/1 5/1 6/1 7/1 8/1 9/1 10/1 11/1 12/1
Date