ML19209D067
| ML19209D067 | |
| Person / Time | |
|---|---|
| Site: | Dresden, Quad Cities, Zion  |
| Issue date: | 09/11/1979 |
| From: | Peoples D COMMONWEALTH EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| NUDOCS 7910190351 | |
| Download: ML19209D067 (3) | |
Text
s T/b Commonwealth Edison One First National Plaza, Chicago, Ilknois Address Reply to: Post Office Box 767 Chicago, Illinois S0690 5
September 11, 1979 Mr. James G.
Keppler, Director Directorate of Inspection and Enforcement - Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137
Subject:
Dresden Station Units 2 and 3 Quad-Cities Station Units 1 and 2 Zion Station Units 1 and 2 Status of IE Eulletin No. 79-02,
" Pipe Support Base Plate Designs Using Concrete Expansion Anchor Bolts" NRC Docket Mos. 50-237/249, 50-254/265 and 50-295/304 Reference (a):
March 8, 1979 letter from J. G. Keppler to Byron Lee, Jr. transmitting IE Bulletin No. 79-02
Dear Mr. Keppler:
Per discussions with your staff in July, 1979 with regard to Reference (a), Commonwealth Edison Company agreed to provide Region III a monthly status report of its progress in completing the items of Reference (a) for Dresden, Quad-Cities and Zion Stations.
A status report through September 10, 1979 follows:
A.
Zion Station 1.
Scope - At Zion, there are over 3,100 anchors (1,550 per unit).
Of this number approximately 620 per unit are accessible and 930 per unit are inaccessible.
2.
Progress - Currently, 204 anchor assemblies have been inspected with about 32% having discrepancies requiring additional inspection to resolve.
- However, no major deficiencies have been found.
1175 185 gr141979 7010190
Commonwealth Edison NRC Docket Nos. 50-237/249 50-254/265 50-295/304 Mr. James G. Keppler: September 11, 1979 3.
Manpower - Currently, Zion is utilizing 30 men / day working 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> / day, 6 days / week.
Plans are being implemented to raise this force to 60 men.
Experience to date indicates that the fitters used for this work require greater than anticipated training as they are not used to inspection-type work.
4 Completion Schedule - With the planned manpower in-crease, all accessible anchor assembly inspections including repairs / resolutions are estimated to be completed by December 1, 1979.
B.
Dresden and Quad-Cities Stations 1.
Scope - Approximately 800 support plates (200 per unit) with anchor bolts are installed in the Dresden and Quad-Cities units.
The majority of these are in accessible areas.
2.
Progress - At Dresden, 30 hangers have been inspected with about 16% having discrepancies requiring minor repairs.
However, no major deficiencies have been found.
At Quad-Cities, the inspection phase was initiated on an accelerated basis on September 10, but no results are available at this time.
3.
Manpower - Currr.atly, Dresden is utilizing 13 men / day, working 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br /> / day, 5 days per week and Quad-Cities is utilizing 32 men / day working 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> / day, 6 days / week.
Plans are being implemented to raise the work force at Dresden to 25 men / day by September 10 and 50 men / day by September 26.
4.
Completion Schedule - With the inspection phases in full swing, all required tecessible anchor assembly inspec-tions, including repairs and resolutions, are expected to be completed by November 15, 1979.
1175 186
Commonwealth Edison NRC Docket Nos. 50-237/249 50-254/265 50-295/304 Mr. James G. Keppler: September 11, 1979 Please address any additional questions that you might have concerning this matter to this office.
Very truly yours, J
l b.L D. L.
?eoples Director of Nuclear Licensing 1175 187