ML20198A113
| ML20198A113 | |
| Person / Time | |
|---|---|
| Site: | Palisades, Big Rock Point, 05000000 |
| Issue date: | 05/14/1986 |
| From: | Berry K CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | Jordan E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| References | |
| IEIN-86-032, IEIN-86-32, NUDOCS 8605200336 | |
| Download: ML20198A113 (5) | |
Text
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Dsrector Nuclear licensmg SMM M General Offees: 1945 West Pernalf Road. Jackson, MI 49201 e (517) 7881636 May 14, 1986 Edward L Jordan, Director Division of Emergency Preparedness and Engineering Response Office of Inspection and Enforcement US Nuclear-Regulatory Commission Washington, DC 20555 CONSUMERS POWER COMPANY - RESPONSE TO IE INFORMATION NOTICE 86-32, " REQUEST FOR COLLECTION OF LICENSEE RADIOACTIVITY MEASUREMENTS ATTRIBUTED TO THE CHERNOBYL NUCLEAR PLANT ACCIDENT."
This letter is to notify the NRC of Consumers Power Company's intention to report any anomalous environmental radioactivity measurements made at our Palisades and Big Rock Point Plants that can reasonably be assumed to have resulted from the Soviet nuclear power plant (Chernobyl) event. This letter also provides specific data that we obtained from performing measurements of members of a Michigan tour group which visited the region of the Chernobyl Plant shortly after the event occurred. The normal environmental monitoring program (EMP) at our Palisades and Big Rock Point Plante has been augmented, as of May 5 and 8, 1986 respectively, to include the collection and analysis of air samples from the immediate plant site. No anomalous results from the normal EMP measurements made at both plants have been noted to date. The augmented air monitoring activities at the Big Rock Point Plant have not indicated any abnormal results and will most likely be terminated at the end of the week of May 12, 1986. The augmented air sampling conducted at the Palisades Plant has, however, yielded increased iodine-131 measurements (I-131 is not normally detected). While these results are clearly due to the Chernobyl event, the levels are so low as to not cause any health hazard to Plant site employees. This information is presented below in the format specified by Information Notice 86-32.
1.
Sample date(s) and location: a) May 9, 1986 @ 2145 through May 12, 1986
@ 2145; Palisades Plant site b) May 12, 1986 @ 2145 through May 13, 1986
@ 2145; Palisades Plant site 2.
Medium or pathway:
air charcoal 3.
Type of analysis:
gamma spectroscopy 8605200336 860514 PDR ADOCK 05000155 PDR G
\\
twB 86-23 s
Edward L Jordan 2
Division of Emergency Preparedness and Engineering Response CPCo Response to IEIN 86-32 May 14, 1986 4.
Statistical data:
a) 3.88E-4nCi/m3; I sigma = 0.60E-4nci/m3; (I-131 concentration) one sample b) 8.16E-4nci/m3; I sigma-tl.63E-4nci/m3; one sample Wholebody counts were performed at our Palisades Plant on members of a Michi-gan tour group known to have visited the Kiev, USSR, area following the Chernobyl event.
(This group was in the Kiev area from the early morning of April 30, 1986 through noon of May 2, 1986.) Spectral analyses (gamma) of contaminated personal items were also carried out on May 7, 1986, and both measurements indicate the presence of a wide distribution of fission products.
The NRC was notified on May 7,1986, in accordance with 10CFR50.72(b)(vi),
that these measurements were made and that some internal and external radioac-tive contamination was found. The attached tables provide a summary of these measurements.
Table I gives a typical wholebody count result, and Table II gives very simi-lar results for a particular personal item (a contaminated purse). We have concluded that the data for the purse differs from the wholebody count results for at least two reasons:
- 1) the purse was counted with laboratory equipment able to identify a larger number of nuclides, and 2) biological elimination resulted in the purse retaining more of its initial activity than the indivi-duals themselves. Table III is a list of personal items from the tour group that were checked for radioactive contamination. The highest contaminated items were, disposed, in accordance with the owners' requests, nr. Plant radio-active waste. None of the personal items, with the possible exception of the shoes which were contaminated to such a level as to yield a 32 mrad /hr beta dose, posed any potential hazard to the owners. Accordingly, Consumers Power Company health physicists concluded that radiation doses to the lungs and thyroids of the exposed individuals are not medically significant.
Consumers Power Company continues to make wholebody counting services avail-able to individuals determined to have been contaminated or otherwise signifi-cantly exposed to radiation from the Chernobyl event. This is being accomplished by referral from hospitals or the Radiological Health Section of the Department of Public Health of the State of Michigan after screening by professionals employed by these organizations. Consumers Power Company has also volunteered to provide an additional wholebody count for any of the tour group members who chose to return within a week. These additional counts should allow us to make a better estimation of the body burden at the time of exposure, ie, the period while these individuals were in Kiev.
Kenneth W Berry cc: Director, Nuclear Reactor Regulation, US NRC Administrator, Regior. III, US NRC NRC Resident Inspector, Palisades / Big Rock Point KWB 86-23
TABLE 1 TYPICAL WMU KIEV TOURIST Time of Exposure 0001 April 30 to 1200 May 2 Time of Whole Body Count
% 10 AM May 7
% Max Permissible Isotope Nanocuries Body Burden Mrem Exposure Barium 140 40 1 5 nCi 6.7%
49 (Lung) lodine 131 98 ! 22 nCi 14.0%
625 (Thyroid)
Iodine 132 38 18 nCi 12.7%
2 (Thyroid)
Zirconium 95 21 ! 13 nCi 1.3%
34 (Lung)
Cesium 137 36 29 nCi 0.1%
2 (Whole Body)
Cesium 134 19 ! 11 nCi 0.1%
2 (Whole Body)
Ruthenium 103 43 1 11 nCi 1.4%
103 (Lung)
Tellurium 132 56 24 nci 1.8%
33 (Lung)
NOTE:
Does not account for the decay or biological elimination of radioactive material between the time of exposure and the time of the Whole Body Count.
NOTE:
This data accounts for material inhaled or injested into the body.
It does not account for direct exposure to individuals in the radioactive cloud.
KWB 86-23
TABLE II ISOTOPES DETECTED ON CONTAMINATED PURSE Percent of Total (at Nuclide Half-Life uCi/ Unit Time of Count)
Xe-133 5.29D 9.016E-4 1*
Mo-99 66.69H 3.388E-4 0.4 Zr-95 65.50D 6.515E-3 7
Np-239 2.35D 1.668E-3 2
Tc-99m 6.03H 3.945E-4 0.5 Nb-95 35.10D 8.700E-3 10 I-131 8.04H 2.440E-2 29 I-132 2.28H 3.611E-3 5
8.251E-3 10 Ru-103 39.60D Cs-134 2.06Y 8.479E-4 1
Cs-137 30.17Y 1.456E-3 2
Ba-140 12.79D 6.859E-3 8
La-140 40.22H 6.956E-3 8
Ce-144 284.20D 4.485E-3 5
Te-132 78.00H 3.416E-3 4
Ce-141 32.50D 5.280E-3 6
- Single Peak Identification KWB 86-23
- = - a TABLE III ITEMS CHECKED FOR CONTAMINATION ITEM COUNTS / MIN Sweater 3000 Belt 200 Wooden Items 100 Watch Band 600 Paper Flowers 8000 Purse (Bag) 3500 Shoes 3000 1ennis Shoes 9000 Hand Bag 5000 Wallet 100 Sewing 300 Shoes 5000 Wooden Items 100 Pictures less than 100 Coins less than 100 Water less than 100 Misc. Knick knacks 100 Coat less than 100 Paper Flowers 5000 Camera 5000 Camera Strap 3800 Wallet 2000 Comb 300 Coin Purse 700 Watch 2000 Glasses-300 Belt 100 Blue Shoes 4000-Blue Purse 2500 Blue Shoes (Gold Buckles) 50,000 Gray Purse 1000 Black Heels 2000 Beige Shoes 38,000 KWB 86-23 L