05000528/LER-2004-002, Technical Specification Violation - Exceeded 20% RTP with LCO Not Met

Technical Specification Violation - Exceeded 20% RTP with LCO Not Met

ML041050105
Person / Time
Site:	Palo Verde
Issue date:	04/02/2004
From:	Danni Smith Arizona Public Service Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
192-01136-DMS/SAB/DGM/DFH LER 04-002-00
Download: ML041050105 (7)

LER-2004-002, Technical Specification Violation - Exceeded 20% RTP with LCO Not Met

Event date:
Report date:
5282004002R00 - NRC Website

text

bAus A subsidiary of Pinnacle If is! Capital Copovration Palo Verde Nuclear Generating Station David M. Smith Plant Manager Nuclear Production Tel.

623-393-6116 Fax.

623-393-6077 e-mail: DSMITHIO@apsc.com Mail Station 7602 P.O. Box 52034 Phoenix, AZ 85072-2034 192-01136-DMS/SAB/DGM/DFH April 2, 2004 ATTN: Document Control Desk U. S. Nuclear Regulatory Commission Washington, DC 20555-0001

Dear Sirs:

Subject:

Palo Verde Nuclear Generating Station (PVNGS) Unit 1 Docket No. STN 50-528 License No. NPF-41 Licensee Event Report 2004-002-00 Attached, please find Licensee Event Report (LER) 50-528/2004-002-00 that has been prepared and submitted pursuant to 10CFR50.73. The LER reports a Technical Specification violation where power was raised above 20 percent rated thermal power without meeting the Limiting Condition for Operation (LCO) for Axial Shape Index (ASI).

In accordance with 1 OCFR50.4, a copy of this LER is being forwarded to the NRC Regional Office, NRC Region IV and the Resident Inspector. If you have questions regarding this submittal, please contact Daniel G. Marks, Section Leader, Regulatory Affairs, at (623) 393-6492.

Arizona Public Service Company makes no commitments in this letter. The corrective actions described in this LER are not necessary to maintain compliance with regulations.

Sincerely, DMS/SAB/DGM/DFH/kg Attachment cc:

B. S. Mallett.

N. L. Salgado M. B. Fields NRC Region IV Administrator NRC Senior Resident Inspector for PVNGS NRC NRR Project Manager

APPROVED BY OMB NO. 3150-0104 EXPIRES 7-31-2004

Abstract

On February 8, 2004, during power ascension in Unit 1, power was raised above 20 percent rated thermal power without meeting the Limiting Condition for Operation (LCO) for Axial Shape Index (ASI) which is a violation of Technical Specification (TS) 3.0.4. TS 3.0.4 does not allow entry into the specified condition when LCO 3.2.5 is not met. Control Room Operators had incorrectly interpreted a provisional note in procedures 400P-9ZZ11 Rev. 56, uMode Change Checklist", 40ST-9ZZM1 Rev.26, "Operations Mode 1 Surveillance Log" step 8.1.17, and Surveillance Requirement (SR) 3.2.5.1, and believed they had up to two hours to restore ASI within limits after exceeding 20 percent power.

LER 2001-002-00 reported a similar condition in the past three years when Unit 3 entered Mode 3 with one Auxiliary Feedwater pump inoperable; a condition prohibited by TS 3.0.4.

NRC FORM 366 (7-2001)

(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 (If more space Is required, use additional copies of NRC Form 366A) subsequently developed that would significantly affect a reader's understanding or perception of this event, a supplement to this LER will be submitted.

8. PREVIOUS SIMILAR EVENTS

In the past three years, a similar condition prohibited by TS 3.0.4 was reported in LER 2001-002-00 when Unit 3 entered Mode 3 with one Auxiliary Feedwater pump inoperable.

9. ADDITIONAL INFORMATION

None.