ML20070C450
| ML20070C450 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 12/10/1982 |
| From: | Phyllis Clark GENERAL PUBLIC UTILITIES CORP. |
| To: | Eisenhut D Office of Nuclear Reactor Regulation |
| References | |
| 5211-82-292, GL-82-22, NUDOCS 8212140180 | |
| Download: ML20070C450 (2) | |
Text
m GPU Nuclear NQQIgf 100 Interpace Parkway Parsippany, New Jersey 07054 201 263-6500 TELEX 136-482 Writer's Direct Dial Number:
5211 82-292 December 10, 1982 (201) 263-6797 Mr. Darrell G. Eisenhut Office of Nuclear Reactor Regulation Division of Licensing U.S. Nuclear Regulatory Commission Washington, DC 20555
Dear Sir:
Subj ect : Three Mile Island Nuclear Station, Unit 1 (TMI-1)
Operating License No. DPR-50 Docket No. 50-289 Congressional Request for Information Concerning Steam Generator Tube Integrity (Generic Letter No. 82-22)
The purpose of this letter is to update our response of November 24, 1982 to NRC generic letter 82-22 based on information developed since that time.
As part of our response to Item 5 of that letter, we projected an exposure estimate for the remainder of the current steam generator project even though it extended beyond calendar year 1982. We noted in our letter that the remainder of the program on which the estimate was based had not yet been detailed.
The timing of your request was such that it require.1 response during the early stages of a complete reassessment being made of the program.
This reassessment includes consideration of many factors including continuing development of methods and tools, ongoing laboratory work,.nput from our independent third party review group, and our experience es the project moved from evaluation and testing in mockups to actual field repair.
Although our reevaluation is not yet complete, it is already evident that the exposure estimate will be higher than that supplied to you in November.
Recognizing that your request was made in connection with an imminent Congressional Hearing, we are providing this revised information now. We understand that our original letter, along with those of other licensees, has been provided to the Subcommittee on Oversight and Investi-gat ions, Committee on Interior and Insular Affairs.
Therefore, we are providing a copy of this letter directly to the Staff Director of that Subeommit t ee.
8212140180 821210 PDR ADOCK 05000289 P
PDR pod GPU Nuclear is a part of the General Pubhc Utinties System
Mr. Darrell G. Eisenhut Page 2 December 10, 1982 (5211-82-292)
Our earlier letter provided an actual exposure from steam generator work from January through September 1982 of 154 person-rems.
In the months of October and November 1982, an additional 168 person-rems exposure resulted from repair activities for a total of 322 person-rems as of November 30, 1982. Our assessment to date, which will need continuing review as activities become better defined, indicates that additional exposure beyond November 30, 1982, for the effort as it is now envisioned, is likely to be in the range of 700-800 person-rems.
As program definition is completed, we will continue to keep the NRC Lafonned.
The remaining information in our letter of November 24, 1982 is unchanged.
Very truly yours, XL. 6 P. R. Clark Executive Vice President pk cc: Staff Director Subcommittee on Oversight and Investigations Committee on Interior and Insular Affairs l
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