ML19353A248
| ML19353A248 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 12/12/1980 |
| From: | Fay C WISCONSIN ELECTRIC POWER CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| IEB-80-11, NUDOCS 8101070570 | |
| Download: ML19353A248 (4) | |
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xv Wisconsin Elecinc vo.wa co?.rva 231 W MICHIGAN. P.O. B0X 2046 MILW AUKEE, WI 53?01 December 12, 1980 f4r. J. G. Keppler, Regional Director Office of Inspection and Enforcement Region III U. S. flVCLEAR REGULATORY COMMISSION 799 Roosevelt Road Glen Ellyn, Illinois 60137
Dear Mr. Keppler:
DOCKET fl05. 50-266 AND 50-301 BULLETIll 80 MAS 0flRY WALL DESIGfi P0lflT BEACH NUCLEAR PLANT, UtilTS 1 ANii 2 This is to transmit additional information regarding our program to evaluate masonry wall design in accordance with IE Bulletin 80-11 dated May 8,1980.
Enclosed is a report entitled "Results of the Re-Evaluation of Masonry Walls for the Point Beach Nuclear Plant". This report provides a comparison of the walls to the referenced criteria and includes a schedule for upgrading of walls to meet the criteria.
If you have any questions regarding this submittal, p' ease contact 3s.
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Very truly yours, L' Q
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M C. W. Fay, Director g;,
fluclear Powcr Department lopiesto: NRC Resident Inspector Point Beach fluclear Plant NRC Office of Inspection and Enforcement Division of Reactor Operations Inspection F]O1070 S
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ItESULTS OF THE RF-EVALMATION OF MASONRY HALLS FOR THE POINT BEACil IJUCLEAR P L AN'"
1.0 INTRODUCTION
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I.
The 180-day report required by NRC IE nulletin 80-11 concerning masonry wall design was sent to NRC under cover of Wisconsin Electric's letter dated November 14, 1980.
That report provided the information required by the nulletin, except for the results of the masonry wall i
evaluation for Point Beach.
This report provides the results of the masonry wall re-evaluation and a schedule for the upgrading work that is believed appropriate.,
2.0 RE-EVALUATION i
The 60-day response to the Bulletin included a list of safety-related masonry walls identified during the olant survey.
Each of these walls has been analyzed in accord-ance with Appendix B,
Section 6.0,
" Analysis and Design",
of the In0-day report.
The blockouts have been analyzed l
in accordance with Appendix B, Section 8.0,
" Criteria for the Re-evaluation of Masonry Blockouts".
Where signifi-i cant external loads exist on the blockouts, Section 6.0 was I
used for the analysis.
The results of the re-evaluation are sumnarized in Table 1.
For analysis purposes, some of the walls listed in the
"'.x 60-day report vere divided into several segments and each segment was analyzed separately.
Each segment is identi-fied by a unique suffix.
All wall segments and blockouts are included in Table 1.
M13/26
s TABLE 1 EVALUATION RT:SULTS OF SAFETY-RELATED MASO?IRY cot;STRUCTION 1.
-(
MASOPJRY WALLS Meets Pe-evaluation Criteria Recuires Upgradino 3
86 39 104 40 152 157-N 143 5-29 72 19 133 5-7 64 20 5-5 24 65 22A 26 68-1 151 Control Boom Walls 157-5 68-2 MASONRY FILLED BLOCKOUT _S_
Meets Re-evaluation Criteria Recuires Uparading 5-31 3-6 30 3-1 5-22 3-7 5-12 5-51
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5-24 134-C-A 14 71 45-W 134-C-B 22 3-19 23 45-E OTilER Further evaluation of the cauipment in proximity to walls I.
numbered 12 and 69 has determined that these walls are not safety-related.
II.
The followinq walls have poured concrete blockouts (not masonry):
8-2 8-45 8-9 109-A
{
3-10 109-n 3-11 III.
Wall number 12R is a plaster partition wall ( not masonry).
IV.
Unit I and Unit 2 facade stairwells were not analyzed.
these walls The safety-related equipment in proximity to failure would not affect the safe
.e for further details 7 "
will be modified so a shutdown of the Pl an t.
See Section 3.0 V.
Brick column facings, wall nos. 146, 147, 161 and 162, were The brick facinas will be modified so a not analyzed.
f ailure would not af fect the safe shutdown of the Plant.
M13/26 L
4 3.0 PLANNr.D FUTURE ACTIONS An described in the July 18, 1980 transmittal letter with the 60-day report, we are proceeding with upgrading those walls and blockouts listed in Table 1 above that do not meet the re-evaluation criteria.
These walls and blockouts l
will be upgraded to meet the masonry wall re-evaluation and FFDSAR criteria.
In addition, mechanical shear con-nectors (e.g.,
clip angles) will be installed on the vertical and top edges of all walls where shear transfer is required.
This work is expected to be complete by September 30, 1981.
i The planned resolution of the facade stairwell walls.is l
i to make them non-safety-related by modifying the steam i
generator blowdown penetrations.
Design modifications are l
I being pursued so that the steam generator blowdown lines
[
can be isolated in the event of damage to the isolation I
valves located outside containment.
A schedule for this i
work will ne provided when the design is complete and l'
equipment delivery dates can be detennined.
These mod-f i
ifications will be made in coniunction with sched uled I
refueling outages for each unit.
O e
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M13/26
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