ML072740230
| ML072740230 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 10/09/2007 |
| From: | Markley M NRC/NRR/ADRO/DORL/LPLIV |
| To: | Edington R Arizona Public Service Co |
| Markley, M T, NRR/DORL/LP4, 301-415-5723 | |
| References | |
| TAC MD6404, TAC MD6405, TAC MD6406 | |
| Download: ML072740230 (5) | |
Text
October 9, 2007 Mr. Randall K. Edington Senior Vice President, Nuclear Mail Station 7602 Arizona Public Service Company P. O. Box 52034 Phoenix, AZ 85072-2034
SUBJECT:
PALO VERDE NUCLEAR GENERATING STATION, UNITS 1, 2, AND 3 -
REQUEST FOR ADDITIONAL INFORMATION REGARDING THIRD 10-YEAR INTERVAL PUMP AND VALVE INSERVICE TESTING PROGRAM (TAC NOS.
MD6404, MD6405, AND MD6406)
Dear Mr. Edington:
By letter dated July 20, 2006, Arizona Public Service Company (APS) submitted a relief request for its third 10-year interval pump and valve inservice testing program for the Palo Verde Nuclear Generating Station, Units 1, 2, and 3. In that letter, APS requested approval of relief requests (PRR-01, PRR-02, PRR-03, PRR-04, PRR-05, PRR-06, PRR-07, and VRR-01) prior to the start of the third 10-year inservice testing interval which begins on January 15, 2008.
The Nuclear Regulatory Commission (NRC) staff has reviewed the information provided and determined that additional information is required in order to complete the evaluation. The additional information being requested is enclosed and was provided to your staff via electronic mail on September 20, 2007. As discussed with Glenn Michael of your staff, the NRC staff is requesting a response within 45 days of the date of this letter.
If you have any questions, please contact me at 301-415-5723.
Sincerely,
/RA/
Michael T. Markley, Senior Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. STN 50-528, STN 50-529, and STN 50-530
Enclosure:
Request for Additional Information cc: See next page
October 9, 2007 Mr. Randall K. Edington Senior Vice President, Nuclear Mail Station 7602 Arizona Public Service Company P. O. Box 52034 Phoenix, AZ 85072-2034
SUBJECT:
PALO VERDE NUCLEAR GENERATING STATION, UNITS 1, 2, AND 3 -
REQUEST FOR ADDITIONAL INFORMATION REGARDING THIRD 10-YEAR INTERVAL PUMP AND VALVE INSERVICE TESTING PROGRAM (TAC NOS.
MD6404, MD6405, AND MD6406)
Dear Mr. Edington:
By letter dated July 20, 2006, Arizona Public Service Company (APS) submitted a relief request for its third 10-year interval pump and valve inservice testing program for the Palo Verde Nuclear Generating Station, Units 1, 2, and 3. In that letter, APS requested approval of relief requests (PRR-01, PRR-02, PRR-03, PRR-04, PRR-05, PRR-06, PRR-07, and VRR-01) prior to the start of the third 10-year inservice testing interval which begins on January 15, 2008.
The Nuclear Regulatory Commission (NRC) staff has reviewed the information provided and determined that additional information is required in order to complete the evaluation. The additional information being requested is enclosed and was provided to your staff via electronic mail on September 20, 2007. As discussed with Glenn Michael of your staff, the NRC staff is requesting a response within 45 days of the date of this letter.
If you have any questions, please contact me at 301-415-5723.
Sincerely,
/RA/
Michael T. Markley, Senior Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. STN 50-528, STN 50-529, and STN 50-530 DISTRIBUTION PUBLIC LPLIV r/f RidsAcrsAcnwMailCenter RidsNrrDorlDpr RidsNrrDorlLpl4 RidsNrrPMMMarkley RidsNrrLAJBurkhardt RidsOgcRp RidsRgn4MailCenter JMcHale, NRR/DCI/CPTB RWolfgang, NRR/DCI/CPTB ADAMS Accession No.: ML072740230 OFFICE NRR/LPL4/PM NRR/LPL4/LA NRR/LPL4/BC NAME MMarkley JBurkhardt THiltz DATE 10/5/07 OFFICIAL AGENCY RECORD
REQUEST FOR ADDITIONAL INFORMATION ARIZONA PUBLIC SERVICE COMPANY, ET. AL.
PALO VERDE NUCLEAR GENERATING STATION, UNITS 1, 2, AND 3 DOCKET NOS. STN 50-528, STN 50-529, AND STN 50-530 By letter dated July 20, 2006 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML072330523), Arizona Public Service Company (APS) submitted a relief request for its third 10-year interval pump and valve inservice testing program for the Palo Verde Nuclear Generating Station, Units 1, 2, and 3. Pursuant to Section 50.55a(f)(5)(i) of Title 10 of the Code of Federal Regulations (10 CFR), APS requested approval of relief requests (PRR-01, PRR-02, PRR-03, PRR-04, PRR-05, PRR-06, PRR-07, and VRR-01) prior to the start of the third 10-year inservice testing interval which begins on January 15, 2008.
The staff has reviewed the information provided and determined that the following additional information is required in order to complete the evaluation:
- 1.
Relief Request PRR-03 [pump relief request (PRR) 3]
Request No. PRR-03-01 Please confirm that during the quarterly tests, vibration measurements will be performed in accordance with ISTB-3540, Manual Valves.
- 2.
Relief Request PRR-05 Request No. PRR-05-01 Please confirm that during the quarterly tests, vibration measurements will be performed in accordance with ISTB-3540.
- 3.
Relief Request PRR-06 The Nuclear Regulatory Commission (NRC) has learned that, due to technology advancement and research work performed in the field of instrumentation, vibration-measuring transducers meeting the Code provisions can be easily procured from various suppliers at a reasonably low cost. The NRC also presented a paper entitled, Pump Vibration Measuring Instruments (Transducers) Issue, during the Ninth NRC/ASME Symposium on Valve and Pump Testing in July 2006. This paper is included in NUREG/CP-0151, Vol. 6, July 2006 (ADAMS Accession No. ML072700042).
Request No. PRR-06-01 In the APS submittal section entitled, Reason for Request, there is no mention of any hardship and/or reason for not using or installing the Code-required vibration measuring transducers with specified ranges from one-third minimum pump shaft rotational speed to at least 1000 Hertz. Please provide sufficient information relating to the hardship or unusual difficulty associated with complying with the Code.
ENCLOSURE
- 4.
Relief Request PRR-07 Request No. PRR-07-01 In the APS submittal section entitled, Components Affected, the licensee included all pumps as smooth-running pumps, even though some of the pumps have a vibration reading greater than 0.05 inches per second (in/sec). Please note that relief can be only applicable to pumps with vibration values less than or equal to 0.05 in/sec.
NUREG/CP-0152, Proceedings of the Fourth NRC/ASME Symposium on Valve and Pump Testing, Session 4, pages 4-32, July 1996, Smooth-Running Pumps, states that, If licensees intend to submit alternative requests to use minimum reference values, the request should be pump specific and include justification as to how the current inservice testing methodology will detect pump degradation. The NRC staff position is to review relief requests on a case-by-case basis for specific requirements of the Code.
Therefore, please revise the relief request to remove the pump(s) that have vibration readings greater than 0.05 in/sec.
Request No. PRR-07-02 In the APS submittal section entitled, Proposed Alternative and Basis for Use, the licensee provides historical vibration test data of various pumps at Palo Verde, Unit 1, and states that Unit 2 and Unit 3 data are similar to Unit 1. (1) Please explain how it is possible to have similar vibration readings for similar pumps (at different locations) at Palo Verde, Units 1, 2, and 3; (2) If the measured vibration values for similar pumps at Units 1, 2, and 3 are in the same magnitude, then please provide the actual data and revise the relief request to include only smooth-running pumps with vibration values less than or equal to 0.05 in/sec; and (3) for Palo Verde, Unit 1, the provided historical vibration data shows that some of the pumps vibration readings are taken at the motor, and axial vibration readings for some pumps are not measured. Please explain how the requirements for vibration measurement, as specified in ISTB-3540, are achieved.
- 5.
Relief Request VRR-01 [valve relief request (VRR) 1]
RAI VRR-01-01 Relief request VRR-01 lists 14 implementation clarifications to American Society of Mechanical Engineers (ASME) Code Case OMN-1, Alternative Rules for Preservice and Inservice Testing of Certain Electric Motor-Operated Valve Assemblies in Light Water Reactor Power Plants. It is not clear to the NRC staff why these 14 implementation clarifications to OMN-1 are discussed in relief request VRR-01. The NRC review of these implementation clarifications is not required at this time, unless they involve a proposed alternative to or relief from the inservice testing requirements in 10 CFR 50.55a(f). Please describe and provide justification for any alternatives to or relief from the requirements in OMN-1 or any other condition(s) as specified in Regulatory Guide 1.192, Operation and Maintenance Code Case Acceptability, ASME OM Code, for implementation of OMN-1.
Palo Verde Nuclear Generating Station cc:
Mr. Steve Olea Arizona Corporation Commission 1200 W. Washington Street Phoenix, AZ 85007 Mr. Douglas Kent Porter Senior Counsel Southern California Edison Company Law Department, Generation Resources P.O. Box 800 Rosemead, CA 91770 Senior Resident Inspector U.S. Nuclear Regulatory Commission P.O. Box 40 Buckeye, AZ 85326 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission Harris Tower & Pavillion 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-8064 Chairman Maricopa County Board of Supervisors 301 W. Jefferson, 10th Floor Phoenix, AZ 85003 Mr. Aubrey V. Godwin, Director Arizona Radiation Regulatory Agency 4814 South 40 Street Phoenix, AZ 85040 Mr. 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 Mr. Matthew Benac Assistant Vice President Nuclear & Generation Services El Paso Electric Company 340 East Palm Lane, Suite 310 Phoenix, AZ 85004 Mr. John Taylor Public Service Company of New Mexico 2401 Aztec NE, MS Z110 Albuquerque, NM 87107-4224 Mr. Geoffrey M. Cook Southern California Edison Company 5000 Pacific Coast Hwy Bldg D21 San Clemente, CA 92672 Mr. Robert Henry Salt River Project 6504 East Thomas Road Scottsdale, AZ 85251 Mr. Jeffrey T. Weikert Assistant General Counsel El Paso Electric Company Mail Location 167 123 W. Mills El Paso, TX 79901 Mr. John Schumann Los Angeles Department of Water & Power Southern California Public Power Authority P.O. Box 51111, Room 1255-C Los Angeles, CA 90051-0100 Mr. Brian Almon Public Utility Commission William B. Travis Building P.O. Box 13326 1701 North Congress Avenue Austin, TX 78701-3326 Ms. Karen O'Regan Environmental Program Manager City of Phoenix Office of Environmental Programs 200 West Washington Street Phoenix AZ 85003