ML17298A571
| ML17298A571 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 09/26/1983 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Knighton G Office of Nuclear Reactor Regulation |
| References | |
| ANPP-27890-ACR, NUDOCS 8309300016 | |
| Download: ML17298A571 (8) | |
Text
REGULATORYJFORNATION OISTRIBUTION S~~EN (RIBS)
ACCESSION NBR;8309300016 DOC DATE: 8$ /09/26 '.NOTARIZED:
YES FACIL:STN 50 528 Pala YJoyde Nuclear Stationi Unit ir'r)zona Publi SJN.50-529 'Palo ferde Nuclear'*Station<
Uni,t 2r, Ar izana Publi STN 50 530 'Pala Verde Nuclear 'Statianr Uni,t 3i, Ar izana Publi AUTH,NAME'UTHOR AFFILIATION VAN BRUNTrE,E, Arizona,Public Service Co, RECIP ~ NAME RECIPIENT AFFILIATION KNIGHTONiGB Licens)ng Branch 3
SUBJECT!
Forwards supplemental info re'oy fan blade.failureiper 830916" telcon request.Evpluation concluded',that failure not safety significant. Fans outside containment separated by cancrete.from redundant safety shutdown components.
DISTRIBUTION CODE: '8001'S COPIES IRECEIVED:LTR,
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TITLE: Licensing Submittal:
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Arizona Public Service Company P.O, SOX 2I666
~
PHOENIX, ARIZONA 65036 September 26, 1983 ANPP-27890 ACR/WFQ 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:
Letter from E. E. Van Brunt, Jr.
(APS), to G.
W. Knighton, (NRC), dated September 1,
1983 (ANPP-27700 WFQ/MAJ),
Subject:
Joy Fan Blade Failure.
Dear Mr. Knighton:
The referenced letter provided information in response to the NRC staff's concerns regarding a fan blade failure.
We were requested during a tele-phone conversation with the NRC (September 16, 1983) to supplement our response.
Attached is the supplemental information requested.
Please contact me if you have any further questions.
Very truly your E.
E. Van Brunt, Jr.
APS Vice President, Nuclear Projects ANPP Project Director EEVBJr/WFQ/sp Attachment cc:
E. A. Licitra (w/a)
A. C. Gehr 8309300016 830926 PDR ADOCK 05000528 8
4
September,. 26, 1983 ANPP-27890 ACR/WFQ STATE OF ARIZONA
)
) ss.
COUNTY OF MARICOPA)
I, Edwin E.
Van Brunt, Jr.,
represent that I
'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 to do so, that I have read such document and know its
- contents, and that to the best of my knowledge and belief; the statements made therein are true.
F Edwin E.
Van Brunt, Jr.
Sworn to before me this~~i, day of My Commission Expires:
My Commlsslon Expires April 6, Nii Notary Publ'ic'~/ jl,g',',
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P
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ATTACHMENT To adequately demonstrate that this missile and other similar Joy Fan Blade missiles could not adversely affect the capability to shutdown an analysis similar to that described in FSAR Section 3.6.1.2 was performed.
- First, a new Zone Of Influence (ZOI) of missile hazards was postulated since the actual missile failure was different from the mechanistic failure that was used in prior separation reviews.
The ZOI extended in all directions unti1 the missile impacted a structure of sufficient mass to prevent missile pene-tration.
Next the equipment location drawings and electrical raceway drawings were reviewed for safety-related structures,.
systems or components within the new ZOI of the fan blade missiles.
There were no redundant safe shutdown components located'ithin the ZOI., Thus, even for the extreme assumption that every component within the'OI was disabled, there would still be a fully operable safe shutdown train.
This meets the guidance and criteria of USNRC standard review plan'3.5.1'.2.
Outside containment, all Joy fans are separated by concrete from redundant safe shutdown components.
f Therefore, the evaluation concluded that the fan'blade failure identified in the subject DER was not safety significant.