05000530/LER-2006-006, Regarding Voluntary LER for Failure of Emergency Diesel Generator to Attain Required Voltage Due to Relay Contactor

Regarding Voluntary LER for Failure of Emergency Diesel Generator to Attain Required Voltage Due to Relay Contactor

ML063050531
Person / Time
Site:	Palo Verde
Issue date:	10/21/2006
From:	Eubanks C Arizona Public Service Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
LER 06-006-00
Download: ML063050531 (8)

LER-2006-006, Regarding Voluntary LER for Failure of Emergency Diesel Generator to Attain Required Voltage Due to Relay Contactor

Event date:
Report date:
Reporting criterion:	10 CFR 50.73(a)(2)(i)(A), Completion of TS Shutdown 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications 10 CFR 50.73(a)(2)(i) 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(ii)(A), Seriously Degraded 10 CFR 50.73(a)(2)(viii)(A) 10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition 10 CFR 50.73(a)(2)(viii)(B) 10 CFR 50.73(a)(2)(iii) 10 CFR 50.73(a)(2)(ix)(A) 10 CFR 50.73(a)(2)(iv)(A), System Actuation 10 CFR 50.73(a)(2)(x) 10 CFR 50.73(a)(2)(v)(A), Loss of Safety Function - Shutdown the Reactor 10 CFR 50.73(a)(2)(v)(B), Loss of Safety Function - Remove Residual Heat 10 CFR 50.73(a)(2)(v), Loss of Safety Function
5302006006R00 - NRC Website

text

10 CFR 50.73 LAPS A subsidiary of Pinnacle West Capital Corporation Palo Verde Nuclear Generating Station Cliff Eubanks Vice President Nuclear Operations Tel (623) 393-6116 Fax (623) 393-6077 Mail Station 7602 PO Box 52034 Phoenix, Arizona 85072-2034 102-05587-CE/SAB/JAP/REB October 21, 2006 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001

Dear Sirs:

Subject:

Palo Verde Nuclear Generating Station (PVNGS)

Unit 3 Docket No. STN 50-530 License No. NPF 74 Licensee Event Report 2006-006-00 Attached please find voluntary Licensee Event Report (LER) 50-530/2006-006-00 prepared and submitted pursuant to 10 CFR 50.73. The LER reports a problem with a relay contactor that caused the failure of an emergency diesel generator to attain its required voltage.

In accordance with 10 CFR 50.4, copies of this LER are being forwarded to the NRC Regional Office, NRC Region IV and the Senior Resident Inspector. If you have questions regarding this submittal, please contact James A. Proctor, Section Leader, Regulatory Affairs, at (623) 393-5730.

Arizona Public Service Company makes no commitments in this letter.

Sincerely, CEISAB/JAP/REB/gt Attachment cc:

B. S. Mallett M. B. Fields G. G. Warnick NRC Region IV Regional Administrator NRC NRR Project Manager - (send electronic and paper)

NRC Senior Resident Inspector for PVNGS

NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB: NO. 3150-0104 EXPIRES: 06/30/2007 (6-2004)

, the NRC may digis/carater foreac blck)not conduct or sponsor, and a person is not required to respond to, the digits/characters for each block) ninformation collection.

3. PAGE Palo Verde Nuclear Generating Station Unit 3 050005301 1 OF 7 S. TITLE Voluntary LER for Failure of Emergency Diesel Generator to Attain Required Voltage Due to Relay Contactor V

~-..--

6. EVENT DATE

6. LER NUMBER

7. REPORT DATE

8. OTHER FACILITIES INVOLVED SEUNTA REVFACILITY NAME MONTH DAY YEAR YEAR IEUMBERNO.

MONTH DAY YEAR IPVNGS Unit 1 0FACILITY NAMEG_

09 22 2006 2006 - 006 -

00 10 21 2006 jPVNGS Unit 2

)CKET NUMBER 05000528 DOCKET NUMBER 05000529

9. OPERATING MODE 1

10. POWER LEVEL 100 0l 0l El 0l 0l 0l

11. THIS REPORT IS SUBMITTED PURSUANT TO 20.2201(b)

[I 20.2203(a)(3)(i) 20.2201(d)

[I 20.2203(a)(3)(ii) 20.2203(a)(1)

El 20.2203(a)(4) 20.2203(a)(2)(i)

[I 50.36(c)(1)(i)(A) 20.2203(a)(2)(ii)

El 50.36(c)(1)(ii)(A) 20.2203(a)(2)(iii)

[I 50.36(c)(2) 20.2203(a)(2)(iv)

[I 50.46(a)(3)(ii) 20.2203(a)(2)(v)

El 50.73(a)(2)(i)(A) 20.2203(a)(2)(vi)

El 50.73(a)(2)(i)(B)

THE REQUIREMENTS OF 10 CFR§: (Check all that apply)

[I 50.73(a)(2)(i)(C)

[I 50.73(a)(2)(vii)

[I 50.73(a)(2)(ii)(A)

[I 50.73(a)(2)(viii)(A)

[I 50.73(a)(2)(ii)(B)

[I 50.73(a)(2)(viii)(B) 0l 50.73(a)(2)(iii)

[I 50.73(a)(2)(ix)(A)

[I 50.73(a)(2)(iv)(A) 0l 50.73(a)(2)(x) 0l 50.73(a)(2)(v)(A) 0l 73.71 (a)(4)

El 50.73(a)(2)(v)(B)

El 73.71 (a)(5)

[E 50.73(a)(2)(v)(C) 0 OTHER [I 50.73(a)(2)(v)(D)

Specify in Abstract below or in (If more space is required, use additional copies of (If more space is requiresd use additional copies of (if more space is required, use additional copies of (If more space is required, use additional copies of (If more space is required, use additional copies of (If more space is required, use additional copies of NRC Form 366A)

Picture 1 Field straightened nflO

- RA 17 lV1I