ML043410256

(TMI-1), Request for Additional Information, Inservice Testing Pump Relief Requests PR-01 and PR-02

ML043410256
Person / Time
Site:	Three Mile Island
Issue date:	12/15/2004
From:	Colburn T NRC/NRR/DLPM/LPD1
To:	Crane C AmerGen Energy Co
Colburn T
References
PR-01, PR-02, TAC MC2558
Download: ML043410256 (5)

Text

December 15, 2004 Mr. Christopher M. Crane President and Chief Executive Officer AmerGen Energy Company, LLC 4300 Winfield Road Warrenville, IL 60555

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION (RAI), RE: THREE MILE ISLAND NUCLEAR STATION, UNIT 1 (TMI-1) INSERVICE TESTING (IST)

PUMP RELIEF REQUESTS PR-01 AND PR-02 (TAC NO. MC2558)

Dear Mr. Crane:

By letter dated March 26, 2004, as supplemented July 19, 2004, AmerGen Energy Company, LLC (licensee), submitted pump relief requests PR-01, PR-02, PR-03, and PR-04, and valve relief requests VR-01 and VR-02 for TMI-1. The licensee requested relief from the IST requirements of the American Society of Mechanical Engineers, Operations and Maintenance (OM) Code-1998 Edition through 2000 Addenda. The licensees July 19, 2004, letter provided additional information for relief request PR-03.

The Nuclear Regulatory Commission staff has determined that it will need the additional information identified in the enclosure to this letter in order to complete its review of the relief requests PR-01 and PR-02. As discussed with and agreed to by your staff, please provide the requested information within 45 days of receipt of this letter. If you have any questions, please contact me at (301) 415-1402.

Sincerely,

/RA/

Timothy G. Colburn, Senior Project Manager, Section 1 Project Directorate I Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-289

Enclosure:

RAI cc w/encl: See next page

December 15, 2004 Mr. Christopher M. Crane President and Chief Executive Officer AmerGen Energy Company, LLC 4300 Winfield Road Warrenville, IL 60555

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION (RAI), RE: THREE MILE ISLAND NUCLEAR STATION, UNIT 1 (TMI-1) INSERVICE TESTING (IST)

PUMP RELIEF REQUESTS PR-01 AND PR-02 (TAC NO. MC2558)

Dear Mr. Crane:

By letter dated March 26, 2004, as supplemented July 19, 2004, AmerGen Energy Company, LLC (licensee), submitted pump relief requests PR-01, PR-02, PR-03, and PR-04, and valve relief requests VR-01 and VR-02 for TMI-1. The licensee requested relief from the IST requirements of the American Society of Mechanical Engineers, Operations and Maintenance (OM) Code-1998 Edition through 2000 Addenda. The licensees July 19, 2004, letter provided additional information for relief request PR-03.

The Nuclear Regulatory Commission staff has determined that it will need the additional information identified in the enclosure to this letter in order to complete its review of the relief requests PR-01 and PR-02. As discussed with and agreed to by your staff, please provide the requested information within 45 days of receipt of this letter. If you have any questions, please contact me at (301) 415-1402.

Sincerely,

/RA/

Timothy G. Colburn, Senior Project Manager, Section 1 Project Directorate I Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-289

Enclosure:

RAI cc w/encl: See next page DISTRIBUTION PUBLIC PDI-1 R/F RLaufer TColburn JHuang DLPM/DPR MOBrien DTerao SUnikewicz OGC ACRS GMatakas, RGN-I ACCESSION NO.: ML043410256 OFFICE PDI-1\PM PDI-2\LA EMEB\SC PDI-1\SC NAME TColburn MOBrien DTerao RLaufer DATE 12/9/04 12/13/04 12/14/04 12/15/04 OFFICIAL RECORD COPY

REQUEST FOR ADDITIONAL INFORMATION INSERVICE TESTING RELIEF REQUESTS PR-01 AND PR-02 THREE MILE ISLAND NUCLEAR STATION, UNIT 1 (TMI-1)

DOCKET NO. 50-289 The TMI-1 Nuclear Service River Water and Nuclear Service Closed Cooling Water pumps fall within the scope of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel, Operations and Maintenance (OM) Code (Code), are defined as Group A Pumps, and, therefore, are subject to quarterly Group A tests and a biennial comprehensive pump test (CPT). Pump speed as well as differential pressure or flow rate are required to be monitored for the Group A test. Additionally, speed, differential pressure, flowrate, discharge pressure and vibration are required for the CPT.

The CPT, which first appeared in the 1995 Edition of the ASME OM Code, results in a more accurate assessment of the pumps operational readiness and performance characteristics at a reduced frequency (once-every-refueling-cycle versus once-every-3-months). The test is intended to be conducted at or near a pumps design flow rate because this area of the pump curve is considered to be most representative of the pumps design performance characteristics. The quarterly Group A is primarily a qualitative test to detect gross mechanical as well as hydraulic degradation or failures. Acceptance criteria for the Group A test are provided in ASME OM Code, Table ISTB-5200-1.

The licensee requests relief from the requirements of individual flow measurement for PR-01 and PR-02. With two pumps in service, the required quarterly Group A test parameters will be measured except for flow rate. During this test, the P will be throttled to the reference value, and vibration measurements for individual pump will then be recorded and compared with their reference values. From this test, any mechanical degradation or failures will be detected by comparing the deviations from the reference value with the range specified in ASME OM Code, Table ISTB-5200-1. As discussed above, the ASME OM Code also requires that a safety-related pump be tested quarterly to detect a deviation in hydraulic performance. Because the proposed test does not measure the flow rate, it is not clear how the hydraulic performance will be monitored or degradation will be detected. To determine whether the proposed alternative provides adequate assurance for the pump operability, the following information is requested.

1. Provide the methodology or analyses of how the test results of the proposed alternative are used to monitor the hydraulic performance or to detect hydraulic degradation and failures.

2. Provide the acceptance criteria that will be used to ensure that the hydraulic performance of either pump has not degraded more than +/- 10%, or to demonstrate that the pump will continue to perform its intended safety function even though one or both of the pumps may have potentially degraded more than 10%.

Enclosure

Three Mile Island Nuclear Station, Unit 1 cc:

Site Vice President - Three Mile Island Nuclear Director - Licensing and Regulatory Affairs Station, Unit 1 AmerGen Energy Company, LLC AmerGen Energy Company, LLC 200 Exelon Way, KSA 3-E P. O. Box 480 Kennett Square, PA 19348 Middletown, PA 17057 Rich Janati, Chief Senior Vice President - Nuclear Services Division of Nuclear Safety AmerGen Energy Company, LLC Bureau of Radiation Protection 4300 Winfield Road Department of Environmental Protection Warrenville, IL 60555 Rachel Carson State Office Building P.O. Box 8469 Vice President - Operations, Mid-Atlantic Harrisburg, PA 17105-8469 AmerGen Energy Company, LLC 200 Exelon Way, KSA 3-N Plant Manager - Three Mile Island Nuclear Kennett Square, PA 19348 Station, Unit 1 AmerGen Energy Company, LLC Vice President - Licensing and Regulatory Affairs P. O. Box 480 AmerGen Energy Company, LLC Middletown, PA 17057 4300 Winfield Road Warrenville, IL 60555 Regulatory Assurance Manager - Three Mile Island Nuclear Station, Unit 1 Regional Administrator AmerGen Energy Company, LLC Region I P.O. Box 480 U.S. Nuclear Regulatory Commission Middletown, PA 17057 475 Allendale Road King of Prussia, PA 19406 Peter Eselgroth, Region I U.S. Nuclear Regulatory Commission Chairman 475 Allendale Road Board of County Commissioners King of Prussia, PA 19406 of Dauphin County Dauphin County Courthouse Michael A. Schoppman Harrisburg, PA 17120 Framatome ANP Suite 705 Chairman 1911 North Ft. Myer Drive Board of Supervisors Rosslyn, VA 22209 of Londonderry Township R.D. #1, Geyers Church Road Vice President, General Counsel and Secretary Middletown, PA 17057 AmerGen Energy Company, LLC 2301 Market Street, S23-1 Senior Resident Inspector (TMI-1) Philadelphia, PA 19101 U.S. Nuclear Regulatory Commission P.O. Box 219 Middletown, PA 17057

Three Mile Island Nuclear Station, Unit 1 cc:

Dr. Judith Johnsrud National Energy Committee Sierra Club 433 Orlando Avenue State College, PA 16803 Eric Epstein TMI Alert 4100 Hillsdale Road Harrisburg, PA 17112 Correspondence Control Desk AmerGen Energy Company, LLC P.O. Box 160 Kennett Square, PA 19348 Manager Licensing - Three Mile Island Nuclear Station, Unit 1 Exelon Generation Company, LLC 200 Exelon Way, KSA 3-E Kennett Square, PA 19348 Associate General Counsel AmerGen Energy Company, LLC 4300 Winfield Road Warrenville, IL 60555