ML20038C804
| ML20038C804 | |
| Person / Time | |
|---|---|
| Site: | Pilgrim |
| Issue date: | 11/19/1981 |
| From: | Morisi A BOSTON EDISON CO. |
| To: | Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| REF-SSINS-6820 81-275, IEB-79-02, IEB-79-14, IEB-79-2, NUDOCS 8112140143 | |
| Download: ML20038C804 (2) | |
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B O STO N EDISON COMPANY DENERAL OFFICES 300 SOVLETON STREET BOSTON. Mas sacMus tTTs 02199 A. V. M D RISI WU CLEAR QPER ATI B BUPPORT DEPARTMENT
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November 19, 1981
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BECo. Ltr. #81-275 DECJ g 793 7
ed ggywn Office rf Inspection and Enforcemenk(xY - Qsj[$
Mr. Ronald C. Haynes, Director
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Region I U.S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA.
19406 License No. DPR-35 Docket No. 50-293
References:
(A) Boston Edison letter of June 27, 1980 from Mr. G. Carl Andognini to Mr. Boyce H. Brier (BECo. Ltr. #80-124)
(B) Boston Edison letter of January 5,1981 from Mr. A. V.
Morisi to Mr. Boyce H. Grier (BECo. Ltr. #81-02)
Dear Sir:
In Reference (B), Boston Edison reported on the status of analyses and modifica-tions being performed in response to IE Bulletin 79-14, and provided tentative l
completion dates for all but five of the modifications (January,1981) and for I
the submittal to the NRC of a final report (February 28,1981).
We were unable to meet the tentative dates because of an increase in the projected l
scope of the task.
This increase was determined by the incorporation of the IE l
Bulletin 79-02 results into our 79-14 effort, the existence of 18 inaccesssible pipe supports that require minor rodifications, and factors encountered during the initial close-out effort. The resultant increased nagnitude of addressing 79-14 requires the revision of our completion schedule; therefore, we have developed the following status update, and schedule revisions:
STATUS OF INSPECTIONS, ANALYSIS, AND MODIFICATIONS Due to the relationship and interdependence between the IE 79-14 results (Pipe Stress and Pipe Support Review) and the IE 79-02 results (Pipe Support Base l
Plate Review), the two projects have been merged into a single effort.
I l
All walk-thru inspections performed to address the requirements of the two Bulletins l
have been completed.
8112140143 3
i
CC"jTON EOCON COMPANY Mr. Ronald C. Haynes, Director November 19, 1981 Page 2 All Pipe Stress Analyses whi-h are known to be required at this time have also been completed.
Approximately 310* Pipe Support Modifications and 49* Base Plate Modifications were required. The status of these Modifications is shown below:
79-14 79-02 TOTAL Total Modifications required:
310 49 359 Construction and Documentation completed:
19 1 12 203 Construction complet2d, awaiting final documentation:
107 30 137 liodificatio'ns awaiting Construction and final documentation:
12 7
19
- These numbgYsIare subject to change as a result of the Review /Close-out Process, during which' f4odifications are often added to the list.
Revised Schedule'.
Our current refueling outage has placed an increased work-load on the various groups involved in the final sign-off process. This is expected to further delay the completion date for the 79-14 and 79-02 projects.
The 137 modi fications awaiting final documentation are expected to be completed by Ap~ril 1, 1982. With the exception of any additional modifications which may be r5hid r3TTs a result of the final ' As-Buil t' review and calculation update, I
the 19 modifications awaiting implementation are also expected to be completed and documented by April 1,1982.
These modifications do not pose any opera-bility concerns.
We anticipate transmitting the final report to the NRC by June,1982.
This report will include final statistical information for both IEB 79-02 and IEB 79-14, an explanation of the procedures and criteria used, and the modification resul ts.
A substantial portion of the work concerning these projects has already been completed, and Boston Edison shall endeavor to fully complete them as expedi-tiously as possible.
We believe, for the reasons shown above, that good cause exists for the acceptance of the schedule revisions we have included in this submittal.
Should you require any additional information concerning this issue, please contact us.
Very truly yours, h
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