ML20062J946
| ML20062J946 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 10/31/1980 |
| From: | Snyder B Office of Nuclear Reactor Regulation |
| To: | De Janos S AFFILIATION NOT ASSIGNED |
| Shared Package | |
| ML20062J949 | List: |
| References | |
| NUDOCS 8011180077 | |
| Download: ML20062J946 (2) | |
Text
... -____ _
~
ff,f A v
r i
i 3
I i)
[&M O
i' OCT 311980 g;
p.
jj E3 i'.
^,
Esb
- d Mr. Sigmund J. A. de Janos Elgo
"' S w
de Janas & Associates il ES Suite 706 Fi G
7 1755 Riverside Drive C
e si Ottawa, Canada K1G 3T6-
Dear Mr. de Janos:
i Your letter to Chairman Ahearne about the method of disposal of the krypton
' i gas from the Three Mile Island nuclear station was referred to me for response.
j i
Metropolitan Edison Company submitted to NRC a " Safety Analysis and Environ-mental Report" (November 13, 1979) in which it evaluated alternative methods for the disposal of the krypton gases, such as purging, cryogenic processing, i
and selective absorption. NRC also evaluated alternative methods for disposal of the krypton gas to determine what.effect decontamination would have on I
workers, on pubite health and safety, and on the environment. Based on its evaluation, NRC issued an environmental assessment (NUREG-0662 and two addenda) for pubite comment on March 26, 1980, and received approximately 800 comments.
These comments were considered in the staff's preparation of the " Final Environ-
{l mental Assessment for Decontamination of the Three Mile Island Unit 2 Reactor i
Building Atmosphere" (NUREG-0662), vols. I and 2, copies of which are enclosed for your infomation. Among alternatives considered, the staff did evaluate the use of balloons as a disposal method for the krypton. Our reasons for're-
[
jecting this alternative are stated on page 9-14 of volume 1 of the' qssessment.-
N,1 From this~ process have emerged the following NRC staff conclusions:
+
t
- The potential physical health impact on the public of using _any of the proposed strategies for removing the krypton-85 is negligible.
- The potential psychological impact is likely to grow the longer it takes to reach a decision, get started, and complete the process.
i
- The purging method is the quick 2st and the safest for the workers on Three Mile. Island to accomplish.
1
- Overall, no significant~ environmental impact'would; result from use of a_n_y. of the alternatives discussed in the assessment.
~
s.
On June 12, 1980, the Commission, issued an Order for Temporary Modification.
of License, authorizing controlled purging of the krypton-85 from the reactor building atmosphere. In a' separate Memorandum and Order, also issued on June 12, 1980, the Commission discussed, rationale for its decision.. Actual" purging
,u
.l THIS-DEUMENT-60lHW
' ~
P00tQUAUTYlPAGES
~ ~ ' " '
- oars >
Ftrum AEC.)l8 (Rev, p.53) AICM U240 W u. e. oovs n=waar enimrene ornces sore.sas soe.,,
- 1 7,.
A mw
,,a.
..w,.. a
,a-
- p 4
W OCT 311980 l
Mr. Signund J. A. de Janos l 1
operations began on June 28, 1980, and were completed on July 11, 1980. The doses resulting from the purge were well within those predicted in section 7.1 of volume 1 of NRC's final envirom1 ental assessment. Copies of both Commission i.
issuances are also enclosed.
l I am pleased to provide you with this information.
l:
Sincerely.
l' Bernard J. Snyder, Program Director l
Three Mile Island Program Office Office of Nuclear Reactor Regulation
(
i
Enclosures:
1.
NUREG-0662, vols.1 & 2 2.
Order fcr Temporary Modification j
~
of License of June 12, 1980 t
3 Memoranfum and Order i
of June 12, 1980 l
DISTRIBUTION Docket 50-289 1-PDR LPDR TERA-
~
NRR'r/f
\\,
~
'q.
TMI P0 r/f TMI. Site.r/f-BSnyder,
JC0llins DBrinkma n '-
WO11u s
8%
l
=
l e
,, b...
'Oppsg g y.
W0liu :bmf DBrinkman BS r.
_v a
,1 l
@niN i_t/2yik sbY
~
1
,-.an m a.,.,,, -.u.
.. _ ~
...w w. =.=.
. a. -. a t
1