ML20135H589
| ML20135H589 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 08/29/1985 |
| From: | Hukill H GENERAL PUBLIC UTILITIES CORP. |
| To: | Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20135H590 | List: |
| References | |
| 5211-85-2140, NUDOCS 8509240043 | |
| Download: ML20135H589 (2) | |
Text
3 GPU Nuclear Corporation Nuclear
- , ors:r8o Middletown, Pennsylvania 17057 0191 717 944 7621 TELEX 84 2386 Writer's Direct Dial Number August 29 1985 5211-85-2I40 Dr. Thomas E. Murley Region I, Regional Administrator U.S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pa.
19406
Dear Dr. Murley:
Three Mile Island Nuclear Station Unit 1 (TMI-1)
Operating License No. DPR-50 Docket No. 50-289 Semi-Annual Effluent and Release Report Enclosed is the THI-1 Semi-Annual Effluent and Release Report for the period January 1 through June 30, 1985, submitted in accordance with TMI-1 Technical Specification Section 6.9.5.1.
This report includes an Executive Sumary of the Effluent Release Report, the Disposal and Release Data, the Joint Frequency Tables and the Summary of Individual Dose Accumulation for the period.
THI-1 Tech. Spec. Section 6.9.5.2 requires that changes to the Off-Site Dose Calculation Manual (0DCM) be reported in the Semi-Annual Effluent Report. The TMI-1 ODCM was revised effective March 11, 1985, and this revision is included as Attachment I to this report.
THI-1 Tech. Spec. Section 6.9.5.2 also requires that changes to the Process Control Program (PCP) be reported. The THI-1 PCP was revised April 9,1985, and is included as Attachment II to this report.
Sincerely, o[
Director, TMI-1 HDH/JGB/spb cc:
J. Thoma Encl: Executive Sumary Report Data, Joint Frequency Tables, Dose Summaries Attachment I (0DCM)
Attachment II (PCP) 0341A3PU Nuclear Corporation is a subsidiary of the General Public Utilities Corporation I(
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EXECUTIVE
SUMMARY
Three Mile Island Nuclear Station - Unit 1 Effluent Monitoring Report First and Second Quarters 1985 The purpose of this report is to summarize the radioactive liquid and gaseous releases and doses to the public resulting from TMI-1 operations for the first and second quarters of 1985.
Effluent and real time meteorological data and Susquehanna Rive-flow data were used to calculate the maximum postulated dose to any individual and the total
-population within 50 miles of the plant. Doses for liquid and gaseous discharges were calculated utilizing the guidelines and methodology set forth in USNRC Regulatory Guide 1.109.
During the first half of 1985, the maximum hypothetical whole body dose received due to the liquid and& gaseous effluents from TMI-1 was 0.0498 mrem and 0.0000028 mrem, respectively.
The maximum hypothetical dose to any organ as a result of these effluents was 0.0772 mrem from the liquid effluents. The doses which could have been received from liquid i
and gaseous discharges are each less than 2.0% of the applicable annual federal regulatory limits found in Appendix I of 10CFR50. The doses are insignificant when compared to approximately 40 mrem received by each individual. from natural background radiation during a period of one half year.
No detectable environmental or health effects are expected from the releases.
Krypton-85 (Kr-85) released from TMI-1 (12.4 Curies) resulted from residual gas left over from the 1985 injection of 19 Curies of Kr-85 into the primary coolant as a tracer for Once Through Steam Generator (OTSG) repair studies. Also released in the gaseous effluents were small amounts of tritium (0.00047 Curies) and strontium-90 (0.0000004 Curies) via the normal gaseous radwaste treatment system.
For the liquid discharges during the first half of 1985, tritium was the most abundant radionuclide released (0.573 Curies) followed by cesium-137 (0.0026789 i
Curies), cobalt-60 (0.000331 Curies), iron-55 (0.000198 Curies), cesium-134 (0.0001416 Curies), antimony-125 (0.0001217 Curies), and strontium-90 (0.0000655 Curies).
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