ML19290H017
| ML19290H017 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 12/15/1980 |
| From: | Hovey G METROPOLITAN EDISON CO. |
| To: | Barrett L Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19290H019 | List: |
| References | |
| RTR-NUREG-0591, RTR-NUREG-591 TLL-666, NUDOCS 8012220383 | |
| Download: ML19290H017 (2) | |
Text
'y -
Metropoliun Edison Company I"
Post Of fice Box 480 b
Middletow1. Pennsylvania 17057 717 944-4041 wnter's Daect o.at Number December 15, 1980 TLL 666 TMI Program Office ATTN:
Mr. Lake Barrett, Deputy Director c/o Three Mile Island Nuclear Station Middletown, Pennsylvania 17057 Three Mile Island Nuclear Station Unit II (TMI-2)
Operating License No.
DPR-73 Docket No.
50-320 METHODOLOGY FOR CALCULATION OF INTEGRATED DOSE
Dear Sir:
Forwarded herewith is the initial report on integrated dose calculations for the EPICOR-II prefilters. This document details the calculational methods employed by GPU as well as calculations performed to date on Prefilter 29.
Our transmittal to you, dated December 3, 1980 (TLL-634), provided our initial evaluation of the potential corrosion effects to the EPICOR-II resin liners. This report supplements that transmitt'al such that radia-tion effects to resin integrity might be evaluated. The calculations performed were benchmarked to radiation surveys taken on the liner when removed from services.
Other data, as described in the report, include influent and effluent concentrations, which could not be reported by gamma analyses due to limitations in the counting technique. The calculational techniques defined in this' transmittal require the distine-tion between parent and daughter radionuclides which exist in a state of equilibrium in order to accurately determine the type and quantity of energy transfer per unit time.
A typical example of this phenomenon is the Cesium 137 - Barium 337m equilibrium state. The curie loadings in this document differ from previous transmittals to you because of the inclusion of the daughter radioisotopes.
7_ :
\\
'% \\
O 0 7; 2 l' !' () 3p]
Metrcpo5 tan Ed son ompany is a r/errber of the General Pubsc U:nes Sys:ern
4 Methodology for Calculation of Integrated Dose Mr. Barrett December 15, 1980 Page Two k'e will continue to update this report as calculations are performed and more information as well as the chemical / metallurgical evaluations which are being performed by GPU, become available.
Should additional information be required, please contact me or my staff.
Sincerely,
/s/ G. K. Hovey G. K. Hovey, Vice-President and Director, T"I-2 GKH:JAD:djb Enclosure cc:
B. J. Snyder
.