ML20010C694
| ML20010C694 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 07/31/1981 |
| From: | Hart J, Hymes R, Padalino J, Parikh H, Stampley R EBASCO SERVICES, INC., LOUISIANA POWER & LIGHT CO. |
| To: | Aswell D LOUISIANA POWER & LIGHT CO. |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, LW-759-81, LWS-759-81, NUDOCS 8108200319 | |
| Download: ML20010C694 (5) | |
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<l EBASCO SERVICES INCORPORATED EBEO f Two World Trade Center, New York, N Y.10048
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July 31, 1981 LW3-759-81 File: 1-C-19 No Response Required Mr D L Aswell Vice President - Power Production Louisiana Power & Light Company 142 Delaronde Street New Orleans, LA 70174 WATERFORD STEAM ELECTRIC STATION NO. 3 INTERIM REPORT OF SIGNIFICANT CONSTRUCTION DEFICIENCY NO. 34
" BUFFALO FORGE HAVC FAN SHROUDS"
Reference:
Buffalo Forge Company Letters:
(1) BF to NRC dated 6/10/81, (2) BF to NRC dated 6/11/81, (3) BF to LP&L/
Ebasco dated 6/11/81, (4) BF to Ebasco dated 7/13/81.
Dear Mr Aswell:
Evaluation of the significance of Potentially Reportable Incident No.
46 has been completed in accordance with 10CFR50.55(e) and Company Porcedure N-23 and is considered reportable.
Hereafter, it will be referred to as Significant Construction Deficiency No. 34.
We are attaching herewith a suggested draft letter and Interim Report from LP&L to the US NRC.
Ebasco recommends that this Interim Report be filed with the US NRC by August 7, 1981.
If there are any further questions, please advise.
Very truly yours, RKS:AB:bd v R K Stampley, Project Manager Attachments:
(1) Draft Letter from LP&L th (2) SCD No. 34 Interim Report Th
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e Mr. K V Sayfrit, Dirsctor, R girn IV U S Nuclear Regulatory Commission Office of Inspection and Enforcement 611 Ryan Plaza. Drive, Suite 1000 Arlington, Texas 76012
SUBJECT:
WATERFORD SES UNIT NO. 3 DOCKET No. 50-382 INTERIM REPORT OF SIGNIFICANT CONSTRUCTION DEFICIENCY No. 34
" BUFFALO FORGE HVAC FAN SHROUDS"
REFERENCE:
Buffalo Forge Company letters. (1) BF to NRC dated 6/10/81; (2) BF '
to NRC dated 6/11/81; (3) BF to LP&L/Ebasco dated 6/11/81,
(4) BF to Ebasco dated 7/13/81.
Dear Mr. Seyfrit:
In accordance with the requirements of 10CFR50.55(e), we are hereby pro-viding two copies of the Interim Report of Significant Construction Daficiency No. 34, " Buffalo Forge HVAC Fan Shrouds".
If you have any questions, please advise.
Very truly yours, D L Aswell, Vice President Power Production ec:
- 1) Director Office of Inspection & Enforcement U S Nuclear Regulatory Commission-Washington, D.C.
20555 (with 15 copies of report)
- 2) Director Office of Management Information and Program Control U S Nuclear Regulatory Commission Washington, D.C.
20555 (with I copy of report)
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LOUISIANA POWER & LICHT COMPANY WATERFORD SES UNIT NO. 3 Interim Report of Significant Construction Deficiency No. 34
" BUFFALO FORGE HVAC FAN SHROUDS" 7 !30!O[
hM Reviewed by J D PAcfalino - Project Engineer 5 ate' Y
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.l H Parikh - Job Engineer Date l
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Quality AsgRirance Engineer gate /
INTERIM REPORT OF 3
SIGNIFICANT CONSTRUCTION DEFICIENCY NO. 34
" BUFFALO FORGE HVAC FAN-SHROUDS" INTRODUCTION-This report is submitted persuant to 10CFR50.55(e). It describes a deficiency in the shrouds'to serve as fan blade missile barriers.
DESCRIPTION The attached references state that the shroud thicknesses on some fans pur-chased from the Buffalo Forge Company would not contain a thrown fan blade.
This condition, if lef t uncorrected, could jeopardize the functional oper-ability of other. nuclear safety related equipment in the vicinity. The fan housing thickness must be corrected to the acceptable level in order that if a fan blade were to throw, it would not penetrate the housing and become a missile.
SAFETY IMPLICATIONS If a fan blade penetrates its shroud and becomes a missile, other safety related equipment in the area could be damaged by this missile.
This missile damage could lead to loss or degradation of the affected safety related equipment. Thus, the equipment could be unable to carry out its re-quired safety function.
1 Therefore, the inadequate missile barrier design of the shrouds would ad-versely affect the safety of the plant if left uncorrected.
CORRECTIVE ACTION The Buffalo Forge Company is proceeding with drawings of suggested means of field modifications for the fans in question. Drawings are expected to be mailed to Ebasco no later than August 7, 1981.
After drawings are reviewed, Ebasco will advise as to the anticipated date l
of corrective action.
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Louisiana Power & Light Company l
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-T Ebasco Services, Inc., Agent
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Ken Afonso - 80th Floor
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SUBJECT:
P.O. #NY-403557 DIERFORD SES #3 M0ET ENGINEERING
- NY-403558 Pursuant to 10CFR21, attached please fin a copy of our letter f.
notification to NRC under the general subject Missile PenetratJon Analysis".
The following is a listing of fans in your installation which are.
affected.
ACTUAL HOUSING CALC'ULATED B.F.CO.
FAN SIZE TAG #
THICKNESS HSG. THICKNESS IDENT.
600BLD AH-13#
0.1046" 0.1345" 76J6052-53 400BLD AH-304 0.6747" 0.1345" 76J6075-76 1320L-39 E22..
O.375" 0.75" 76J6570-71 890BLD S6 -
0.1345" 0.3125" 76J6572-73 805BL
'E20' O.1046" 0.25" 7636574-75 980BL E48n O.1046" 0.25" 76J6582 980L-25
.E163 0.25" 0.75" 76J6585-88 805L-25 E17; 0.1875" 0.50" 76J6643-44 Accordingly, you may wish to consider field modifications.
If this is your desire,~we can provide drawings ~of suggested means of modi-ficat.to6. -
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Very truly yours, M,
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EXECUTIVEOFF1CES 60 BRO Y BUFFALO,NEW YORK 1004 PHONE U16)80 5121 TELEX 091234
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Buffalo Forge Company gg Buffalo, N.Y. iaa P.O. BOX =
July 13, 1981_
Ebssco Services Inc.
P..O. Box 70 Killona, Louisiana 70066 ATTENTION: Amin Bishara
SUBJECT:
Louisiana Power & Lig'at Co.
Waterford No. 3 P. O. N6. NY-403557 & NY-403558 Confirming our recent telephone conversation, enclosed is a copy of DO-148F-1 which describes the method used to establish fan housing requirements of Centrifugal fans d2 signed to contain failed wheel components.
We are proceeding with drawings of suggested means of field modification for the fans referedeced in our letter of June 11, 1981. We expect to mail these drawings to you
_no.later than August.7..~.
Vary truly yours, BUFFALO FORGE COMPANY s
A. Cownie M: nager Contract Administration JAC: dis CC: Dave Kane-New York C C. *.
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EXECUITVE OFFICES 490 BROADWAY BUFFALO,NEW YORK 14204 PHONE U16) 847-5121 TELEX 091234 c N:Et se :xu-s av n:t:ct: s.5. t:T T:Ano. A. tv as tit:;.i..t :4.:t.: -i.. r A* -...a :
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3uffalo Forge Company Buffalo, N.Y. nuo P.O. BOX M5
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June 11, 1981 r
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$Y Director of Inspection Enforcement JI!!! ? 1 IWi Nuclear Regulatory Commission j
CONTRACT Mashington, D.
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20555 ADidlN!d i RAT:CA, Attention:
Mr. Victor Stello
Dear Mr. Stello:
On June 10, 1981, we submitted a report relating to 10CFR Part 21.
In that report we incorrectly ad-
. vised you that Dusquesne Light Co., Beaver Valley 1 & 2, Contract 02BVS-177 has fans that are affected.
This listing should be deleted from our report. 'We apologize for any inconvenience this error may have caused.
Very truly yours, BUFFALO FORGE COMPANY AIR HANDLING DIVISION f
I Robert Jorge sen Direct,r of z.ngineering RJ:gkd cc:
Region I Dire *ctor I
06)PE OF $U.h7hR$3fL
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- EXEC..YE OTTICES 490 BROADWAY BUTTALO.NEW YORK l4204 PHOST(716)847 5121 TELEX 091234 Wi. D :
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Buffa' o ?orge Company Buffalo, N.Y. *a r.o.nox a
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June 10, 1981 y
Director of Inspection Enforcement Nuclear Begulatory Commission Washington, D. C.
20555 Attention:
Mr. Victor Stello
Dear Mr. Stello:
On June 5, 1981, we made a telephone rep' ort to Mr. Robert Bear and Mr. William Mills which they considered to be our pre.
liminary report under 10CFR Part 21.
Our final report is as follows.
We have a number of contracts which specify that missile penetration analyses be performed.
Those contracts for which we have either shipped all or part of the equipment are listed below.
During the course of. executing these contracts we per-formed the necessary missile penetration analyses and designed the equipment accordingly.
Some of the contracts were for centrifugal fans while others were for axial-flow fans.
New methods of calculation indicate thicker housings.
Customer Plant Contract 6 Cleveland Elec. & Illum Co.
Perry 1 & 2 P-1189-S P-1120-S Louisiana Power & Light Co.
..Waterford 3 NY-403557 NY-403558 Dasquesne Light Co.'
Beaver Valley 1 & 2.
Clinton 1 & 2 C-11487
% shingt6n-Public' Power WNP 1 & 4 "C 5-22 Supply System Washington Public Power WNP 2 BR3900-101 Supply System EXECL'1TVE OFFICT.S 490 BROADWAY BUFFALO.NEW YORK 14204 PHONE (716)$47 5121 TELEX 091234 e ' -
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' Director of Inspection Enforcement June 10,.1981 Page 2 3
4 We are not in a position to judge whether any missiles which might penetrate the housings would produce a condition which would be classified as a substantial safety hazard.
We are notifying our customers who' are in a cosition to determine this.
Very truly yours, BUFFALO FORGE COMPANY AIR EANDLING DIVISION i
l Robert o E nsen Director of Engineering RJ:gkd cc:
Region I Director O
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