ML20039A674
| ML20039A674 | |
| Person / Time | |
|---|---|
| Issue date: | 11/16/1981 |
| From: | Pettengill H NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Mott W ENERGY, DEPT. OF |
| Shared Package | |
| ML20039A675 | List: |
| References | |
| CON-FIN-B-2217, REF-WM-40 NUDOCS 8112210111 | |
| Download: ML20039A674 (2) | |
Text
~ -.
y
///f}t)k h)~~M:
. o DISTRIBUTION- @41-90
- g.,
WMUR s/f 426.3 FIN B2217_
WMUR w/f WMUR r/f WM n/f j
FIN B2217/WM-40/81/11/6/1 NMSS r/f IE Reg IV GEadie HPettengill i
RScarano.
lMY l 6 l98l WMUR:GCE BFisher FIN B-2217 JLinehan WM-40 i
DMartin g
RBru 4N Dr. William Mott, Director JMart)n (I"Hf f
/b Environmental Control Technology Division q
l Office of the Environment, EV-14 Ni,.Jyg U.S. Department of Energy T
i.
Washington, D.C.
20545
'0; DEC3 1981'
~
U.S. MfGtAR 23GtAAtort counsam Gentlemen:
j As you are aware, Battelle Pacific Northwest Laboratories (PNL) is ef f joy currently conducting extensive radiological surveys throughout Edgemon l
South Dakota in order to determine the number of properties containing.
elevated levels of residual radioactivity.
To date, about 50% of the 4
residence units surveyed (i.e., over 358 structures), on the basis of exceeding 0.01 WL on a grab sample, may require long-term radon progeny measurements to determine if the t.nnual average Working Level for that structure would exceed 0.015 WL.
However, due to the lack of.available equipment to perform long-term surveys in a reasonable time period, the l
NRC directed its contractor to develop alternate means to determine whether an area around or under a structure contains residual radioactivity. An alternative termed a mini-engineering assessment. has been developed and implemented on a trial basis.
4 1 '
Pending peer review and acceptance, the mini-engineering assessment would measureably reduce the number of necessary long-term radon progeny 3
measurements. This technique would, of course, have direct applicability l
to your remedial action progams and could result in large time and money savings.
j.
Additionally, PNL has already in use a protocol for full-engineering assessments to evaluate the extent of residual radioactivity on a property, and the necessary remedial actions and costs.
In fact, with the exception of those residences requiring long-term radon progeny measurements, full-engineering assessments have been completed on almost i
all of those structures which failed the Ra-226 or gamma radiation level criteria.
I i
l DIST:
TICKET NO:
1 0FC ' :
NAME :
8112210111 8111'16
~
=.
~
FIN B2217/WM-40/81/11/6/1 NOV I 61981
-2_
Your timely review and comment on both these protocols would be greatly appreciated.
Sincerely, ISI Harry J. Pettengill, Section Leader Operating FacilitiesSection II Uranium Recovery Licensing Branch Division of Waste Management
Enclosures:
Mini and Full Engineering Assessment Protocols cc:
John Themelis, Grand Junction, C0 DIST:
TICKET NO:
I
/
(g '
OFC :gggg ggggg ggggg
---g,4--:
p,,>,- :
T we.
_____.' _GiEad ',
' [11[y t t eny,i_1_1_; n_s_cagyno __;
DATE:81/11/0Qj 81/11/I('. 81/11/jf 7
.