ML20040C604

Submits Environ Info in Response to Telcon.Tritium Releases to Sanitary Sewers for 1975-1981 & Sensitivity of Environ Monitoring Listed

ML20040C604
Person / Time
Site:	National Bureau of Standards Reactor
Issue date:	01/26/1982
From:	Rozier Carter COMMERCE, DEPT. OF
To:	John Miller Office of Nuclear Reactor Regulation
References
NUDOCS 8201290073
Download: ML20040C604 (2)

Text

~

7 -

f*Y,,

UNITE 3 CTATED CEPARTMENT CF CIMMET.CE N tir ci Cureau cf Ctandard3

(#

/

Washington, D.C. 20234 4rss o' t

'N z

(;. p January 26, 1982 y

4 s

'1.

Mr. James 'R.' Miller, Chief

'%ffID 72 Standardization and Special g

.y /,9 Projects Branch

~

Division of Licensing kb ti. 5. Nuclear Regulatory Commission dJ

~

D Washington. OC 20555

%x g y' s

' 7 s

c) s s

Dea'r MrFMi11 erb

~ %

gN

s e u

Subject:

Disironmental Infonnation, Docket No. 50-18.4, License No. TR-5 s

s In response to a telephone icquiry from your staff, the following information c

is subniitted.b

~

.;e s

s

-1.

Tritium Re16ase to the Sanitary Sewer Since insta'llition of-the stain'less steel heat exchan'gers in 1975, the average'tritji:m release to the Sanitary sewer has been approximately 0.84 Ci.a.nnually.,The b'reakdown for each of the years is as follows:

J Year Tritium Release, Ci

- - T97!i 0.67-1976 ls 0.49 1977

~s. ' -

i' O.57 j

1.34 s 1978 s

1979

.4 '

l.69

' ~. '

s q

1980

{

i -0.5T

'.),-

1981 ' $

'J

% 0.53c -

~

.~

~_. ?.

i 2.

Sensitivijy of Envircnmental Monitoring Soil and Grass Sempbg

\\['u d 5

a.

Mingmn, detectable, level for strontium-90 is better than 10 pCi/g which is below background' levels.

b.

Water Samp1[ing i

Minimum detectable level for tritium is 2XTO'7uti/mL (MPC=3X10 Ci/mL)

-3 Minimum detectable level for hther prominent radioisotopes (sodium-24, manginese-56, iron-59, cobalt-60', copper-54; niobium-95, 2

l N zirconiume95, ruthenium-103, iodine-131, cesium-137, barium-140, lanthenum-140, 9erium-141, praseodymium-143, and cerium-144) is better than 10L ci/mL whit.h is less than 1% of MPC.

u

/

Ae

..+

S

[

/O s

- m, v I

820129005 820126 45000184 d

~

FDR ADOCh'J, p

PDR

' ' l' V

.:f s

+.

f, c.

External, Background fionitoring fiinimum detectable level is 4 mrem or less per TLD.

7, Sincerely, ft/&.$' k k

Robert S. Carter Chief, Reactor Radiation Division

\\

4 E

f I

t 1

(

-?

,)

v e

f

(

[

t en