ML19330C689
| ML19330C689 | |
| Person / Time | |
|---|---|
| Site: | Vallecitos File:GEH Hitachi icon.png |
| Issue date: | 08/06/1980 |
| From: | Darmitzel R GENERAL ELECTRIC CO. |
| To: | Clark R Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8008110341 | |
| Download: ML19330C689 (5) | |
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ENGINEERING GENERAL ELECTRIC COMPANY, P.O. BOX 460, PLEASANTON, C/.LIFORNIA 94566 DIVISION August 6,1980 Mr. Robert A. Clark, Chief Operating Reactors Branch #3 Division of Licensing U. S. Nuclear Regulatory Commission Washington, D.C. 20555
SUBJECT:
Calculated 50 Year Organ Doses at the Vallecitos Nuclear Center Site Boundary from 100% Release of the Isotopes in the General Electric Test Reactor (GETR) Pool, Canal and Primary Water -
License TR Docket 50-70
Dear Mr. Clark:
In answer to a question raised at our meeting of July 30,1980'with the NRC Staff, the attached calculation of the dose rate resulting from the evaporation of the water from the GETR following a postulated seismic event is given. No credit was taken for the containment following the seismic event. The results of these calculations show that the dose caused by the release of these waters is well below those permitted during normal operation.
Very truly yours, i
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AFFIRMATION The General Electric Company hereby submits the information pertaining to the offsite dose resulting from the evaporation of the General Electric Test Reactor (GETR) water.
To the best of my knowledge and belief, the information contained herein is accurate.
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Submitted and sworn before me this 6th day of August,1980, W
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County of Alameda, State of California.
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VALLECI' IDS hUCLEAR CEEER Picasanton, California August-5, 1980 To:
W. H. King
SUBJECT:
CALCULATED 50 YEAR ORGAN DOSES AT 'IEE VNC SITE BOUNDARY FROM 100% RELEASE OF THE ISUIDPES IN GETR POOL, CANAL, AND PRIMARY WATER The boundary organ doses were calculated for the conservative release of the 20 isotopes identified in Table 1.
These isotopes and quantities have been identified through testing of the GETR plant waters during nomal operation. The worst case. dose based on an assumed release of the entire inventory was less than one percent of the dose limits for members of the 1
general public, given in ICRP-9.
The 50 year dose commitments to various organs from exposure to a 2 hour2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> re-lease of the isotopes, in Table 1, were calculated with DOSE 77, a Cencral Electric version of DACRIN. 'Ihe input parameters used, besides the isotope inventory are:
Distance from GETR to the nearest site boundary = 768 m Meteorological stability = Pasquill Type F Wind Speed = 1 m/s O
Particle Size = 1 micron 3reathing Rate = 347 cc/s Release and exposure time = 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> Release licight = Ground Release Isotope Solubility Form = Soluble The 50 year organ doses are given in Table 2.
Over 90% of the total body dose is due to six of the isotopes. These isotopes are: Cc-60, Na-24, Cs-137, Zr-95, Cc-144, and Sb-124. Because of the relatively low volatility of these isotopes, it can be concluded that the actual insult to the public from evaporation of the GETR water would be very insignificant.
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'IUTAL CURIE LEVFIS IN GETR WATERS DURING NOR4U. OPERATIONS
- $t Primary-Pool-Nuclide T,., yrs.
Canal Curies
~e C-14 5.73E+3 1.318E-3 Cs-137.-
3E+1 8.78E-2 11-3 1.226E+1 1.743E0 Co-60 5.27EO 4.043E-1 Cs-134 2.10E0 7.33E-3
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hh-54 8.3E-1 4.20E-3' Cc-1'44 7.81E-1 3.20E-2 Zr-95 1.78E 3.30E-2 Sb-124 1.65E-l' 4.05E-2 Ru-103 1.10E-1 7.00E-3 Nb-95 9.59E-2 4.61E-2 Cc-141 8.90E-2 4.20E-3 Cr-51 7.62E-2 2.68E-2 Sb-122 7.67E-3 1.41E-2 W-187 2.74E-3 3.54E-2 Na-24
- 1. 71E-3 9.26E-1 Xc-135 1.05E-3 4.12E-3 Sr-92 3.08E-4 2.72E-2 hh-56 2.95E-4 4.68E-3 Ar-41 2.09E-4 1.95E-1 i
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50 YEAR ORGAN DOSES AT SITE BOU.NTARY FOR RELEASE OF ISMOPES IN GETR WATERS
-Organ 50 Year Dose, Rem Total Body Inhalation 3.55E-3 Submersion,
1.31E-3 Kidneys 3.47E-3 Liver 6.76E-3 Bone 1.01E-2 Lungs 1.16E-2 Thyroid 1.02E-4 Stomach 4.39E-4 Small Intestine 8.88E-4 Upper Large Intestine
.7.76E-4 lower Large Intestine 2.70E-3 Skin, Submersion 1.70E-3
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