ML070640412

Summary of Meeting with Palo Verde, Discussion of Progress on Component Design Basis Review

ML070640412
Person / Time
Site:	Palo Verde
Issue date:	02/22/2007
From:	William Jones Division of Reactor Safety IV
To:	Edington R Arizona Public Service Co
References
Download: ML070640412 (20)

Text

February 22, 207 Randall K. Edington Senior Vice President, Nuclear Mail Station 7602 Arizona Public Service Company P.O. Box 52034 Phoenix, AZ 85072-2034

SUBJECT:

MEETING

SUMMARY

- DISCUSSION OF PALO VERDE PROGRESS ON COMPONENT DESIGN BASIS REVIEW

Dear Mr. Eddington:

This refers to the management meeting conducted at the U.S. Nuclear Regulatory Commission (NRC) Region IV Office, Arlington, Texas, on February 20, 2007. The meeting attendance list and a copy of the presentations are included as Enclosures 1 and 2. No commitments were made by the licensee during the conference.

In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice," a copy of this letter and its enclosure will be available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records (PARS) component of NRC's document system (ADAMS). ADAMS is accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).

Sincerely,

/RA/

William B. Jones, Chief Engineering Branch 1 Division of Reactor Safety Dockets: 50-528; 50-529; 50-530 Licenses: NPF-41; NPF-51; NPF -74

Enclosures:

1. Attendance Lists

2. Presentation

Arizona Public Service Company cc w/enclosures:

Steve Olea Arizona Corporation Commission 1200 W. Washington Street Phoenix, AZ 85007 Douglas K. Porter, Senior Counsel Southern California Edison Company Law Department, Generation Resources P.O. Box 800 Rosemead, CA 91770 Chairman Maricopa County Board of Supervisors 301 W. Jefferson, 10th Floor Phoenix, AZ 85003 Aubrey V. Godwin, Director Arizona Radiation Regulatory Agency 4814 South 40 Street Phoenix, AZ 85040 Scott Bauer, Acting General Manager Regulatory Affairs and Performance Improvement Palo Verde Nuclear Generating Station Mail Station 7636 P.O. Box 52034 Phoenix, AZ 85072-2034 Jeffrey T. Weikert Assistant General Counsel El Paso Electric Company Mail Location 167 123 W. Mills El Paso, TX 79901 John W. Schumann Los Angeles Department of Water & Power Southern California Public Power Authority P.O. Box 51111, Room 1255-C Los Angeles, CA 90051-0100 John Taylor Public Service Company of New Mexico 2401 Aztec NE, MS Z110 Albuquerque, NM 87107-4224

Arizona Public Service Company Geoffrey M. Cook Southern California Edison Company 5000 Pacific Coast Hwy, Bldg. N50 San Clemente, CA 92672 Robert Henry Salt River Project 6504 East Thomas Road Scottsdale, AZ 85251 Brian Almon Public Utility Commission William B. Travis Building P.O. Box 13326 1701 North Congress Avenue Austin, TX 78701-3326 Karen O'Regan Environmental Program Manager City of Phoenix Office of Environmental Programs 200 West Washington Street Phoenix, AZ 85003 Matthew Benac Assistant Vice President Nuclear & Generation Services El Paso Electric Company 340 East Palm Lane, Suite 310 Phoenix, AZ 85004

Arizona Public Service Company Electronic distribution by RIV:

Regional Administrator (BSM1)

DRP Director (ATH)

DRS Director (DDC)

DRS Deputy Director (RJC1)

Senior Resident Inspector (GXW2)

Branch Chief, DRP/D (RLN1)

Senior Project Engineer, DRP/D (GEW)

Team Leader, DRP/TSS (FLB2)

RITS Coordinator (MSH3)

SUNSI Review Completed: __Y______ ADAMS: / YesG No Initials: __CJP____

/ Publicly Available G Non-Publicly Available G Sensitive / Non-Sensitive SRI:EB1 C:EB1 CJPaulk/lmb WBJones

/RA/ /RA/

2/22/07 2/22/07 OFFICIAL RECORD COPY T=Telephone E=E-mail F=Fax

Enclosure 1 LIST OF ATTENDEES Arizona Public Service S. Bauer, Acting General Manager, Regulatory Affairs G. DAunoy, Senior Engineer, Probabilistic Risk Assessment Section M. Karbassian, Department Leader, Mechanical D. Mauldin, Vice President, Engineering R. Randels, Director, Design Engineering B. Thiele. Site Manager, Component Design Basis Review Project Sargent and Lundy M. Navarro, Senior Engineer NRC D. Chamberlain, Director, Division of Reactor Safety W. Jones, Chief, Engineering Branch 1, Division of Reactor Safety J. Nadel, Reactor Inspector, Engineering Branch 1, Division of Reactor Safety R. Nease, Chief, Projects Branch D, Division of Reactor Projects C. Paulk, Senior Reactor Inspector, Engineering Branch 1, Division of Reactor Safety J. Reynoso, Reactor Inspector, Engineering Branch 1, Division of Reactor Safety Presentation

VERDE PALO Palo Verde / NRC Meeting Component Design Basis Review (CDBR) Project February 20, 2007

Agenda Introductions and opening remarks Purpose of CDBR CDBR project scope CDBR organization chart Milestones completed Issues identified to date

- Corrective Action status 2 PALO VERDE

Purpose of CDBR Verify the Design Bases have been correctly implemented for high risk-significant components and operator actions.

Verify the capability of these components to perform their intended safety function.

Verify interface requirements between NSSS vendor and Architect-Engineer are correct, complete and appropriately incorporated into Design Bases.

3 PALO VERDE

CDBR Project Scope

1. High-risk component Design Basis review

2. NSSS to BOP interface verification

3. Design Basis calculation re-verification

4. Industry Operating Experience reviews

5. Margin management program development

6. Design Basis Manual completion

7. Design / licensing document update 4 PALO VERDE

5 PALO VERDE

CDBR Project Deliverables Component summary reports Updated Design Basis Manuals CRDRs, CRDR evaluations and corrective actions Trending of issues identified Updated/new calculations UFSAR licensing document change requests Margin management procedure Margin management metrics 6 PALO VERDE

Phase 1 Milestones Evaluate 3 PILOT components

- Status: completed 11/03/06 PRA to identify high-risk components/operator actions

- Status: completed 11/15/06 Identification of 20 low-margin components/6 low-margin operator actions

- Status: completed 12/01/06 Safety analysis provides list of credited operator actions

- Status: completed 1/5/07 Evaluation of 20 low-margin, high-risk components, 6 operator actions and 4 to 6 Significant Operating Experiences

- Status: Due 02/28/07 (on schedule) 7 PALO VERDE

20 High-Risk, Low-Margin Components AFW PUMP B HPSI PUMP A CONDENSATE STORAGE TANK CONTAINMENT SPRAY PUMP A BATTERY A ATMOSPHERIC DUMP VALVE 179 GAS TURBINE GENERATOR NO. 1 S/G #2 STEAM SUPPLY TO AFA-P01 BYPASS VALVE SPRAY POND PUMP MOTOR A S/G #2 STEAM SUPPLY TO AFA-P01 SPRAY POND PUMP SLAVE RELAY CLASS 1E 4KV BUS 1E-PBB-S04 CKTBRK AUX FDW ISO VLVPUMP B TO DG B OUTPUT BREAKER SG-1 EMERGENCY DIESEL GENERATOR B CONTROL ELEMENT DRIVE MECHANISM K204 RELAY (LOAD SHED 2)

REFUELING WATER TANK LOP/LS CONTROL LOGIC LPSI PUMP A 8 PALO VERDE

Phase 2 Evaluate high-risk components system-by-system

- Begin with Auxiliary Feedwater (AF), then Safety Injection (SI)

Perform interface requirement verification and calculation reverification in parallel with component evaluations for AF and SI Revise calculations and Design Basis Manual 9 PALO VERDE

Phase 2 Develop screening criteria for evaluating similar components Develop detailed schedule for evaluating high-risk/shutdown/external event components Complete project in 3 to 4 years 10 PALO VERDE

Project Issues Identify issues per CDBR procedure Use Palo Verde Action Request (PVAR) process Review potential degraded/nonconforming conditions with Rapid Response Team, including Operations

- Use Operability Determination process as necessary 11 PALO VERDE

Yellow = ODs/Functional Assessments/Personnel Safety Design - Maint. UFSAR Per. Safety Design- HP - Proc Procedures Calc Issues Misc.

12 PALO VERDE

Noteworthy CRDRs/PVARs 7 Operability Determinations

- Class battery voltage > 140 Vdc

- ADV nitrogen line had extra fitting installed

- ADV nitrogen accumulator capacity

- LPSI and Containment Spray (CS) room heat loads

- CS motor oil leakage

- CS calculation discrepancies (2) 4 Functional Assessments

- AF room drain line check valve debris

- DG fuel oil cross-connect line

- GTG starting diesel fuel oil requirements

- GTG aligned to class bus in >1 hour (simulation) 13 PALO VERDE

CRDR/CRAIs Status February 16, 2007 113 PVARs generated

- 125 CRDR Action Items (CRAIs)

- 39 PVARs being dispositioned (identify action items)

- 11 Corrective Maintenance Work Orders (CMWOs) 56 CRAIs completed 5 CMWOs completed 14 PALO VERDE