ML20003A037
| ML20003A037 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 08/04/1980 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20003A034 | List: |
| References | |
| NUREG-0683, NUREG-0683-ERR, NUREG-683, NUREG-683-ERR, NUDOCS 8101290214 | |
| Download: ML20003A037 (4) | |
Text
.
August 4, 1980 l
1 ERRATA The following corrections have been identified in the U.S. Nuclear Regulatory Cecnission's Draft Programmatic Environmental Impact Statement related to the decontamination and disposal of radioactive wastes resulting from the March 28, 1979, accident at Three Mile Island Nuclear Station, Unit 2:
pages S-10 In the table on this page, the numbers 1,700, 6f3, 0.18, and 0.2, all on the same line, should be changed to 100, 200, 0.02, and 0.04, respectively.
S-10 In the third paragraph, 5th 11ac, change the word " probability" to " risk."
S-10 In the third paragraph, 6th line, change 1.7 to 2.2.
S-10 In the third paragraph, 7th line, change 3.1 to 4.2.
4-4 Change the last paragraph to read: "For the total body doses estimated above, over the 15 months prior to purging, the additional probability of an adult cancer death is 6.7 X 10-10 for the lifetime of the maximum exposed individual, and ghe additional probability for a genetic effect is 1.2 X 10-over the next five generations for the r::aximum exposed individ-ual."
5-30 In the first line of text, change 6.7 to 8.1.
In the third line, change 1.2 to 1.5.
6-23 In table 6.3-9, change 5.7 X 10-0 to 5.7 X 10-6, In table 6.3-13, chan e 2.1 X 10-11 r.o 2.1 X 10-10 and 3.9 6-25 X 10-11 to 3.9 X 10-1 6-50 In the 5th paragraph, change 6.9 to 8.3 and 1.3 to 1.5.
6-57 In table 6.5
, change 9.1 X 10-9 to 8.8 x 10-9 and 1.7 X 10-8 t o 1. 6 X 10-8-53 In the 5th paragraph, after the words "For the total body doses estimated above," insert the following: "on the basis of processing 4,000 drums..."
10-11 Substitute attached page 10-12 Substitute attached page 10-13 Substitute attached page 12-1 In the second paragraph, 6th line, change 1.7 to 2.2.
12-1 In the second paragraph, 7th line, change 3.1 to 4.2.
2N
Page corrected 8-4-80 10-11 10.3 0FFSITE DOSES AND HEALTH EFFECTS FROM NORMAL OPERATIONS The dose calculations and health effects estimates in the foregoing chapters are summarized in this chapter. The calculations summarized here are for the population living around the t
plant and those along the waste transportation routes.
1 The total body doses calculated for the maximum exposed individual from each activity are listed in Table 10.3-1.
The health effects resulting from these doses are also listed in the table. Where more than one option is described for an activity, the range of dose and i
health effects is listed in the table.
Individual doses and health effects are presented in the last row of the table. The maximum total body dose to an individual offsite would be in the range of 0.96 to 1.6 mrem; the lifetime risk of cancer for a dose of 1.6 mrem is about 2.2 x 10 7 and the risk of genetic effects from that dose to of fspring of the exposed individual is about 4.2 x 10 7 The 50-mile cumulative population dose that could be
{
expected would be about 6 person-rem, and the average dose received by an individual in The resulting risk of 1 additional cancer in this population would be 2.7 x 10 3 mrem.
the 50-mile population is 8.4 x 10 4 The maximum total dose to an individual residing along the waste transportation routes is i
estimated in the range of 0.002 to 0.006 mrem for all of the TMI-2 irradiated fuel shipments.
l A member of the general public who spends 3 minutes at an average distance of 3 feet from a truck loaded with radioactive wastes (as at a service facility along the highway) might receive up to 1.3 mrem; the risk of cancer for that dose is 1.7 x 10 7 and the risk of genetic effects from that dose to offspring of the exposed individual is about 3.4 x 10 7 As noted in the foregoing sections, the natural background radiation to an individual in the area amounts to about 116 mrem per year, 36% of which comes from cosmic radiation, 39% from terrestrial radiation, and 24% from internal radiation (mainly K-40 deposited in the body). Comparison of the doses calculated here to those of natural background radiation suggests that the health effects are essentially non-existent, especially in consideration of the fact that natural background doses in the United States vary from one location to another within a range of 70 to 310 mrem per year.
t The meaning of a lifetime risk of 10 7 can be understood by comparison to risks associated with other activities. Different types of activities that have an equivalent risk are l
compared in Table 10.3-2.
This comparison suggests that risks of this level are not unusual.
l e
I l
Table 10.3-1.
Summary of Offsite Dose and Health Effects of TMI-2 Cleanup Health Effects Offsite Total Body Dose to Probability of Cancer Probability of Genetic Document Maximum Exposed Death over Lifetime Effect over Next 5 Genera-Section Operation Individual (mrem)a of Exposed Individual tions of Exposed Individual 4.5.2 Maintenance of reactor 4.8 x 10 3 6.7 x 10 8"
1.2 x 10'
~
in a safe condition 5.1.5.2 Decontamination of AFHB 1.4 x 10'i
- 2. 0 x 10 11 3.6 x 10-12
~
surfaces 5.2.5.2 Cleanup of water in auxil-0.067 to 0.52 9.4 x 10[9 to 1.7 x 10[8 to iary building 7.3 x 10 8 1.4 x 10 7
~
5.3.5.2 Desludging and decontamina-
<5.8 x 10 6 8.1 x 10 23 1.2 x 10 12 tion of auxiliary building sumps and tanks.
o.
R$
5.4.5.2 Packaging of solid wastes 2.0 x 10~5 2.8 x 10 12 5.2 x 10-12 from decontamination of auxiliary building 6.2.5.2 Radiation mapping of 0
0 0
reactor building 6.3.5.2 Processing of reactor 1.5x10[3 to 2.1 x 10[1 to 3.9 x 10] toto building sump liquids 2.1 x 10 2 2.9 x 10 9 5.5 x 10 '>
6.4.5.2 Decontamination of reactor
<5.9 x 10 6 8.3 x 10 ta 1.5 x 10 12
?
building surfaces i
~
k 6.5.5.2 Processing of reactor
<2 x 10 6 to 3.0 x 10 ta to 5.2 x 10 23 to building decontamination 6.3 x 10 2 8.8 x 10~9 1.6 x 10~8 E
liquids 2
~
~
2.
6.6.5.2 Packaging of solid wastes
<10 6 1.4 x 10 13 2.6 x 10 13 2
reactor building l,
I ce 7.2.5.2 Processing of primary water 5.8 x 10 6 8.1 x 10 12 1.5 x 10 22
i i
Table 10.3-1.
Continued Health Effects Offsite Total l
Body Dose to Probability of Cancer Probability of Genetic Document Maximum Exposed Death over Lifetime Effect over Next 5 Genera-I Section Operation Individual (mrem)#
of Exposed Individual tions of Exposed Individual 1
7.3.5.2 Packaging of solid wastes
<10 " to_
1.4 x 10
'3 to 2.6 x 10,'3 to from primary water 7.5 x 10 4 1.0 x 10 80 2.0 x 10
'O processing
~7 8.1.5.2 Removal of RPV head and 0.75 1.1 x 10 7 2.0 = 10 i
l Internals 8.2.5.3 Core examination and defueling 8.3.5.3 Decontamination of primary g
system 1,
w 8.4.5.2 Packaging of solid wastes 1.8 x 10~5 2.6 x 10 tz 4.6 x 10- 2 from reactor defueling
~
~
9.5.1.2 Truck transportation 0.002 to 1.3 2.6 x 10 80 to 5.2 x 10 8"
to of TMI waste 1.69 x 10 7 3.4 - 10 7
~
~
Purging of reactor building 0.2 2.8 x 10 8 5.2 x 10 "
(NUREG-0662) to 2.5 x 10~7 to 2
Cumulative effects 0.96 to 1.6 1.3 x 10~7 c
~7 E
in the TMI vicinity 2.2 x 10~7 4.2 x 10 n
- Range reflects dose estimates for alternatives, not calculational uncertainty.
h An associated skin dose of 11 mrem was also estimated from the purging.
Since the skin is not as radiosensitive 2
1 b
as the rest of the body, the health effects from this small exposure are expected to be negligible.
{
CWaste transport effects are expected to be very low (0.002 to 0.006 mrem) in the Till vicinity.
7 T
E
--