BROOKHAVEN NATIONAL LABORATORY
CHE
ASSOCIATED UNIVERSITIES, INC.
Upton, Long Island, New York 11973
Safety & Environmental Protection Division
R
410001
(516) 282.
FITS 666% 4959
September 14, 1984
Dr. William Bair, Ph.D.
Battelle Pacific Northwest Laboratories
P.O.
Box 999
Richland, WA
99352
Dear Dr. Bair:
Thank you for the opportunity to discuss plutonium dose calculations.
have some additional information which I would like to pass on to you and
other persons who were present at the meeting.
I
Our current estimate of Pu activity in the urine of former Bikinians is
now 5 fCi. This is less than the 12 fCi reported by me at the meeting because
a longer counting of the sample has allowed better statistics.
Keith Eckerman has noted an error in my meeting notes regarding the Moss
retention function.
I have corgected this and the last exponent in the Moss
function should read -4.8 x 10° t.. This correction leads me to conclude that
the Moss function is comparable to the ICRP, Leggett and Durbin functions.
I have reworked the former adult Bikini resident's estimated 239py
committed dose equivalent.
I based it on 5 fCi in urine, constant continuous
intake and ICRP 30 values for committed dose equivalent per unit uptake.
Model
Bone
Surface
rem
.
Liver
Red
Marrow
Effective
ICRP 30
15
3.0
1.1.
0.79
Leggett
20 ©
4.2
1.5
1.1
Durbin
20
4.2
1.5
1.1
Moss
10
2.1
0.77
0.55