ML062920327

Request for Additional (RAI) - Susquehanna Steam Electric Station, Units 1 & 2 - Application to Implement Average Power Range Monitor/Rod Block Monitor/Technical Specifications/Maximum Extended Load Line Limit Analysis (Arts/Mellla)

ML062920327
Person / Time
Site:	Susquehanna
Issue date:	10/19/2006
From:	Richard Guzman NRC/NRR/ADRO/DORL/LPLI-1
To:	Mckinney B Susquehanna
Guzman R, NRR/DORL, 415-1030
References
TAC MC9040, TAC MC9041
Download: ML062920327 (6)

Text

October 19, 2006 Mr. Britt T. McKinney Sr. Vice President and Chief Nuclear Officer PPL Susquehanna, LLC 769 Salem Blvd., NUCSB3 Berwick, PA 18603-0467

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION (RAI) - SUSQUEHANNA STEAM ELECTRIC STATION, UNITS 1 AND 2 (SSES 1 AND 2) - APPLICATION TO IMPLEMENT AVERAGE POWER RANGE MONITOR/ROD BLOCK MONITOR/TECHNICAL SPECIFICATIONS/MAXIMUM EXTENDED LOAD LINE LIMIT ANALYSIS (ARTS/MELLLA) (TAC NOS. MC9040 AND MC9041)

Dear Mr. McKinney:

In reviewing your letter dated November 18, 2005, concerning the request for an amendment to the SSES 1 and 2 Technical Specifications that supports the implementation of ARTS/MELLLA, the Nuclear Regulatory Commission staff has determined that additional information contained in the enclosure to this letter is needed to complete its review. These questions were discussed with your staff during a teleconference on October 4, 2006. As agreed to by your staff, we request you respond within 45 days of the date of this letter.

If you have any questions, please contact me at 301-415-1030.

Sincerely,

/RA/

Richard V. Guzman, Project Manager Plant Licensing Branch I-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-387 and 50-388

Enclosure:

RAI cc w/encl: See next page

October 19, 2006 Mr. Britt T. McKinney Sr. Vice President and Chief Nuclear Officer PPL Susquehanna, LLC 769 Salem Blvd., NUCSB3 Berwick, PA 18603-0467

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION (RAI) - SUSQUEHANNA STEAM ELECTRIC STATION, UNITS 1 AND 2 (SSES 1 AND 2) - APPLICATION TO IMPLEMENT AVERAGE POWER RANGE MONITOR/ROD BLOCK MONITOR/TECHNICAL SPECIFICATIONS/MAXIMUM EXTENDED LOAD LINE LIMIT ANALYSIS (ARTS/MELLLA) (TAC NOS. MC9040 AND MC9041)

Dear Mr. McKinney:

In reviewing your letter dated November 18, 2005, concerning the request for an amendment to the SSES 1 and 2 Technical Specifications that supports the implementation of ARTS/MELLLA, the Nuclear Regulatory Commission staff has determined that additional information contained in the enclosure to this letter is needed to complete its review. These questions were discussed with your staff during a teleconference on October 4, 2006. As agreed to by your staff, we request you respond within 45 days of the date of this letter.

If you have any questions, please contact me at 301-415-1030.

Sincerely,

/RA/

Richard V. Guzman, Project Manager Plant Licensing Branch I-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-387 and 50-388

Enclosure:

RAI cc w/encl: See next page DISTRIBUTION:

Public RidsOgcMailCenter RidsNrrPmRGuzman RidsNrrDeEica RBeacom LPLI-1 R/F RidsNrrDorlLpla RidsAcrsAcnwMailCenter RidsNrrLaSLittle PRebstock Accession Number: ML062920327

• Input provided. No substantive changes made.

OFFICE NRR/LPLI-1/PM NRR/LPLI-1/LA NRR/DE/EICA/BC NRR/LPLI-1/BC NAME RGuzman SLittle AHowe* RLaufer DATE 10/16/06 10/18/06 7/19/06 10/19/06 OFFICIAL RECORD COPY

REQUEST FOR ADDITIONAL INFORMATION RELATING TO THE APPLICATION FOR IMPLEMENTATION OF AVERAGE POWER RANGE MONITOR/ROD BLOCK MONITOR/TECHNICAL SPECIFICATIONS/MAXIMUM EXTENDED LOAD LINE LIMIT ANALYSIS (ARTS/MELLLA)

SUSQUEHANNA STEAM ELECTRIC STATION, UNITS 1 AND 2 (SSES 1 AND 2)

PPL SUSQUEHANNA, LLC DOCKET NOS. 50-387 AND 50-388 The Nuclear Regulatory Commission (NRC) staff is reviewing the proposed license amendment from PPL Susquehanna, LLC (PPL, the licensee) to Facility Operating License No. NPF-14 and NPF-22 related to the implementation of the ARTS/MELLLA for SSES 1 and 2. The NRC staff has determined that additional information requested below will be needed to complete its review.

1. Explain why the existing setpoints, which are being removed or altered by this license amendment, are part of the SSES 1 and 2 design configuration and Technical Specifications (TSs), but are not credited in any SSES 1 and 2 safety licensing analyses.

a. Provide a statement as to whether or not the setpoint is a limiting safety system setting (LSSS) for a variable on which a safety limit (SL) has been placed as discussed in Title 10 of the Code of Federal Regulations (10 CFR), Section 50.36(c)(1)(ii)(A).

b. Examples of instrument functions that might have LSSSs included in this subset in accordance with the plant-specific licensing basis are: rod block monitor withdrawal blocks, feedwater and main turbine high water level trip, and end of cycle recirculation pump trip. For each setpoint, or related group of setpoints, that you determined not to be SL-related, explain the basis for this determination.

c. If the revised information is related to LSSS setpoints, discuss the setpoint methodology used at SSES 1 and 2 to establish these new values. Provide documentation (including sample calculations) of the methodology used for establishing the limiting setpoint and the limiting acceptable values for the as-found and as-left setpoints as measured in periodic surveillance testing as described below. Indicate the related analytical limits and other limiting design values (and the sources of these values) for each setpoint.

Enclosure

2. For setpoints that are determined to be SL-related, the NRC letter to Nuclear Energy Institutes Setpoint Methods Task Force, Technical Specification for Addressing Issues Related to Setpoint Allowable Values, dated September 7, 2005 (Agencywide Documents Access and Management System Accession No. ML052500004), describes setpoint-related TSs (SRTSs) that are acceptable to the NRC for instrument settings associated with SL-related setpoints. Specifically, part A of the enclosure to the letter provides limiting condition for operation notes to be added to the TSs, and part B includes a check list of the information to be provided in the TS Bases related to the proposed TS changes.

a. Describe whether and how you plan to implement the SRTSs suggested in the September 7, 2005, letter. If you do not plan to adopt the suggested SRTSs, explain how you will ensure compliance with 10 CFR 50.36 by addressing items 2b and 2c, below.

b. As-Found Setpoint Evaluation: Describe how surveillance test results and associated TS limits are used to establish operability of the safety system. Show that this evaluation is consistent with the assumptions and results of the setpoint calculation methodology. Discuss the plant corrective action processes (including plant procedures) for restoring channels to operable status when channels are determined to be inoperable or operable but degraded. If the criteria for determining operability of the instrument being tested are located in a document other than the TSs (e.g., plant test procedure), explain how the requirements of 10 CFR 50.36 are met.

c. As-Left Setpoint Control: Describe the controls employed to ensure that the instrument setpoint is, upon completion of surveillance testing, consistent with the assumptions of the associated analyses. If the controls are located in a document other than the TSs (e.g., plant test procedure) explain how the requirements of 10 CFR 50.36 are met.

3. For setpoints that are not determined to be SL-related, describe the measures to be taken to ensure that the associated instrument channel is capable of performing its specified safety functions in accordance with applicable design requirements and associated analyses. Include in your discussion, information on the controls you employ to ensure the as-left trip setting after completion of periodic surveillance is consistent with your setpoint methodology. Also, discuss the plant corrective action processes (including plant procedures) for restoring channels to operable status when channels are determined to be inoperable or operable but degraded. If the controls are located in a document other than the TSs (e.g., plant test procedure), describe how it is ensured that the controls will be implemented.

4. In Attachment 4 of your November 18, 2005, submittal, item (e) provides the modification of the multi-vendor data (MVD) as a specific equipment change for ARTS logic implementation. The NRC staff requests the following information with regards to the safety-related MVD equipment and the anticipated changes to it:

a. Please explain the complete functional capabilities of the MVD as provided by the equipment manufacturer.

b. By functional description, identify the functions by which PPL anticipates using the MVD.

Susquehanna Steam Electric Station, Unit Nos. 1 and 2 cc:

c. Explain what functions will change, and the procedural steps to incorporate the modifications to the MVD for the ARTS logic implementation.

Robert A. Saccone Berwick, PA 18603-0467 Vice President - Nuclear Operations PPL Susquehanna, LLC 769 Salem Blvd., NUCSB3 Berwick, PA 18603-0467 Bryan A. Snapp, Esq Assoc. General Counsel Terry L. Harpster PPL Services Corporation General Manager - Plant Support Two North Ninth Street, GENTW3 PPL Susquehanna, LLC Allentown, PA 18101-1179 769 Salem Blvd., NUCSA4 Berwick, PA 18603-0467 Supervisor - Document Control Services PPL Susquehanna, LLC Rocco R. Sgarro Two North Ninth Street, GENPL4 Manager - Nuclear Regulatory Affairs Allentown, PA 18101-1179 PPL Susquehanna, LLC Two North Ninth Street, GENPL4 Richard W. Osborne Allentown, PA 18101-1179 Allegheny Electric Cooperative, Inc.

212 Locust Street Walter E. Morrissey P.O. Box 1266 Supervising Engineer Harrisburg, PA 17108-1266 Nuclear Regulatory Affairs PPL Susquehanna, LLC Director, Bureau of Radiation Protection 769 Salem Blvd., NUCSA4 Pennsylvania Department of Berwick, PA 18603-0467 Environmental Protection Rachel Carson State Office Building Michael H. Crowthers P.O. Box 8469 Supervising Engineer Harrisburg, PA 17105-8469 Nuclear Regulatory Affairs PPL Susquehanna, LLC Senior Resident Inspector Two North Ninth Street, GENPL4 U.S. Nuclear Regulatory Commission Allentown, PA 18101-1179 P.O. Box 35, NUCSA4 Berwick, PA 18603-0035 Steven M. Cook Manager - Quality Assurance Regional Administrator, Region 1 PPL Susquehanna, LLC U.S. Nuclear Regulatory Commission 769 Salem Blvd., NUCSB2 475 Allendale Road Berwick, PA 18603-0467 King of Prussia, PA 19406 Luis A. Ramos Board of Supervisors Community Relations Manager, Salem Township Susquehanna P.O. Box 405 PPL Susquehanna, LLC Berwick, PA 18603-0035 634 Salem Blvd., SSO

Susquehanna Steam Electric Station, Unit Nos. 1 and 2 cc:

Dr. Judith Johnsrud National Energy Committee Sierra Club 443 Orlando Avenue State College, PA 16803