ML17298A541
| ML17298A541 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 09/01/1983 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Knighton G Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML17298A542 | List: |
| References | |
| ANPP-27700-WFQ, NUDOCS 8309090300 | |
| Download: ML17298A541 (8) | |
Text
0 REGULATORY DEFORMATION DISTRIBUTION SY
.M (RIDS)
ACCESSION NBR:8309090300 DOC.DATE~ 83/09/01
,NOTARIZE/:, YES FACIL:STN 50 528 Palo Verde Nuclear Statjons Unjt li Arjzona Publj STN-50 529 Palo Verde Nuclear Statjons Unit 2s Arizona Publj
, STN 50 530'alo Verde Nuclear Stationi Unit 3E Arizona Publ'i AUTH.NAME,,
AuTHOR AFFILI AT ION, VAN BRUNT.E.E.
Ar izone Public Service Co.
RECIP.NAME REClPIEN]. AFFILIATION KNIGHTON0 G Licensina Branch 3
DOCKET 05000528 05000529 05000530
SUBJECT:
For war ds data'i led derzcr in)ionof pause of 820924 failur e of Joy fsn blades on vane axial fsnsin response to NRC'830204 r eauest.No addi phvsical pr otection features. neces v
Proposed chanae -to FSAT Table 3".5 3 encl.
OISTRIOOTION COOE:
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TITLE: Licensina Submittal:
PSAR/FSAR Amdts 8 Related C'orr.espondence NOTES:Stenderdjzed plant Stendsrdjzed plant Standardized plant.
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Arizona Public Service Company P.o. SOX 21666
~
PHOENIX, ARIZONA 65036 September 1,
1983 ANPP-27700 WFQ/MAJ Director of Nuclear Reactor Regulation Attention:
Mr. George Knighton, Chief Licensing Branch No.
3 Division of Licensing U.S. Nuclear Regulatory Commission Washington, D.C.
20555
Subject:
Palo Verde Nuclear Generating Station (PVNGS)
Units 1, 2 and 3
Docket Nos. STN-50-528/529/530 File:
83-056-026; G.1.01.10
Reference:
1.
NRC letter from G.
W. Knighton, NRC to E.
E.
Van Brunt, Jr.,
- APS, dated February 4,
1983.
Evaluation of Potential Missile Hazards From Fan Blade Assembly Failure.
2.
Palo Verde Nuclear Generating Station Project Evaluation-Deficiency Evaluation Report, No. 82-53 Revision 1, dated July 7, 1983. (Final Report) 3.
Joy Manufacturing Company Report No.
X-992, "Failure Analysis of 54-26-1770 Steel Rotor Returned on NPR-97152 from Palo Verde Nuclear Generating Station",
dated October 22, 1982.
4.
Bechtel's Material and,.Quality Services Trip Report, MGQS Log No. 280157, dated October 1, 1982.
5.
The Waldinger Corporation "Verification Report" for Joy
- Fans, attachment to Bechtel Power Corporation Letter B/CVI-E-42846 to CVI Corporation, dated December 6, 1982.
Dear Mr. Knighton:
The NRC was informed on September 24, 1982 of the failure of the Joy Fan Blades on the vane axial fan (Tag No. 1-M-HCN-AOlB) installed in the Unit 1 Containment Building.
An interim report (DER 82-53) was submitted to the NRC regarding this failure on October 25, 1982.
Reference (1) requests Arizona Public Service Company (APS) to provide the following additional information concerning the above fan blade failure.
l.
"A detailed description of the cause of the fan blade failure and the resulting missile."
2.
"An evaluation of whether additional physical protection
- features, or other measures, are required for protection of safety-related equipment against internal missiles resulting from fan failures."
8309090300 83090i PDR 161DOCK 05000528 8
k II
,!i IE
Mr. G.
W. Knighton Page 2
September 1,
1983 ANPP-27700 WFg/MAJ ll 3.
"The extent to which the FSAR (Section 3.5.1.1 and 3.5.1.2) may need to be revised as a result of the above evaluation."
Reference (1) also states that if any of the requested information is to be provided in the final report (DER-82-53) then the response to this request may refer to the final report.
The following is the APS response to the 3 items listed above.
1.
"A detailed description of the cause of the fan blade failure and the resulting missile."
RESPONSE
The detailed description of the cause of the fan blade failure and the resulting missile can be found in the attached referenced final report (DER-82-53),
Reference (2) and on pages 2-6 of the attached Reference (3), Joy Manufacturing Company Report No. X-992.
2.
"An evaluation of whether additional physical protection features, or other measures,
'are required for protection of safety-related equipment against internal missiles resulting from fan failures."
RESPONSE
Per Reference (2), section II, in a review of all fans located within the containment, no structure, system or component necessary for safe plant shutdown
- was, nor could be, adversely affected by any internally generated rotating missile.
Additionally, the evaluation of similar fans located outside the containment shows that the missiles from those fans will not adversely affect structures, systems or components required for safe plant shutdown.
Therefore, any additional physical
'rotection features or other measures are not required for protection of safety related equipment.
3.
"The extent to which the FSAR (sections 3.5.1.1 and 3.5.1.2) may need to be revised as a result of the above evaluation."
RESPONSE
Attached is a
proposed change to FSAR Table 3.5-3.
This change is described in Reference (2), section III, item (3) and is the only change that will be made to FSAR sections 3.5.1.1 or 3.5.1.2.
If you have any questions regarding this information, please call me.
Very truly yours, (Rem E. E. Van Brunt, Jr.
APS Vice President Nuclear Projects Management ANPP Project Director EEVB/MAJ/sp Attachment cc:
E. A. Licitra A. C. Gehr J. Wermiel (w/a)
~
~
September 1,
1983 ANPP-27700 MFQ/MAJ STATE OF ARIZONA
)
) ss.
COUNTY OF MARICOPA)
I, Edwin E. Van Brunt, Jr., represent that X am Vice President Nuclear Projects of Arizona Public Service Company, that the foregoing document has been signed by me on behalf of Arizona Public Service Company with full authority so to do, that T. have read such document and know its contents, and that to the best of my knowledge and belief, the statements made therein are true.
Edwin E. Van Brunt, Jr.
Swota to hafota ma this~/day of
~-"', 1983.
My Commission expires:
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