ML20002B401
| ML20002B401 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 12/04/1980 |
| From: | Hovey G METROPOLITAN EDISON CO. |
| To: | Jay Collins Office of Nuclear Reactor Regulation |
| References | |
| TLL-632, NUDOCS 8012110507 | |
| Download: ML20002B401 (3) | |
Text
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Metropolitan Edison Company 4~
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Post Office Box 480
. Addletown. Pennsylvania 17057 Writer's Cirect O at Number December 4, 1980 TLL 632 TMI Program Office Attn:
Mr. John T. Collins, Deputy Director U. S. Nuclear Regulatory Commission c/o Three Mile Island Nuclear Station Middletown, Pennsylvania 17057
Dear Sir:
Three Mile Island Nuclear Station, Unit 2 (TMI-2)
Operating License No. DPR-73 Docket No. 50-320 Submerged Demineralizer Svstem Your letter, NRC/TMI-80-145, dated November 7, 1980, forwarded questions concerning the subject system. You also requested that our TER be updated to address the information contained in ORNL/
TM/7448.
This letter is in response to your request.
Our TER, submitted under cover of our letter TLL 160, dated April 10, 1980, accomplishes the following objectives:
1.
Provides the basis for the necessity to decontaminated the containment sump water and RCS water.
2.
Provides a summary of the alternative methods for accomplishing the task.
3.
Provides a summary system description and the system design e
criteria.
4 Provides an analysis of radiological considerations to workers and to the general public (population dose).
5.
Provides a hypothetical accident analysis.
6.
Provides an estimate of anticipated system performance.
Since the submittal of our TER, additional information has been made available through the publication of ORNL/TM-7448, Evaluation of the Submerged Demineralizer System (SDS) Flowsheet for Decon-tamination of High-Activity-Level Water at the Three Mile Island Unit 2 Nuclear Power Station, by the Oak Ridge National Laboratory.
This information appears to be inconsistent with the TER information.
We are aware of these apparent inconsistencies and have dis-cussed various approaches available to achieve desired decontamina-tion factors on the containment sump and reactor coolant system waters with members of the NRC staff.
In fact, we have committed to them our intent to provide additional information concerning our approach to resolution of these apparent inconsistencies.
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g Metrocohtan Ea; son Company is a Memter of the Generai Pubhc Utities System f
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Attachment Page 2 SURRY POWER STATION FAILURE OF SOLENOID VALVES i M ACTURED BY VALCOR ENGINEERING COMPAhT INSPECTION ENFORCEMENT BULLETIN 80-23 It has been determined, by a system review, that Surry Power Station does not have installed, or in stock, any solenoid valves of the type described by Inspection Enforcement Bulletin 80-23.
An estimated five manhours were expended to conduct this review.
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