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MONTHYEARML0426504712004-09-29029 September 2004 Westinghouse Electric Co, Withholding from Public Disclosure, WCAP-16193-P Project stage: Other ML0430802762004-11-10010 November 2004 RAI, Amendment to Reflect Addition of the Chilled Water System to Provide Cooling to the Containment Fan Cooling Units Project stage: RAI ML0504004122005-02-14014 February 2005 RAI, Amendment to Reflect Addition of the Chilled Water System to Provide Cooling to the Containment Fan Cooling Units Project stage: RAI ML0527700692005-09-30030 September 2005 Units, 1 and 2, Tech Spec Pages for Amendments 266 and 248 to Resolve Non-Conservative Technical Specifications Related to Containment Fan Cooler Units Project stage: Other ML0526504272005-09-30030 September 2005 Partial Withdrawal of an Amendment Request Project stage: Withdrawal ML0526503682005-09-30030 September 2005 License Amendments, Revise Non-Conservative Technical Specifications Related to Containment Fan Cooler Units Project stage: Other 2004-09-29
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Category:Letter
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Text
November 10, 2004 Mr. A. Christopher Bakken, III President & Chief Nuclear Officer PSEG Nuclear - X15 P.O. Box 236 Hancocks Bridge, NJ 08038
SUBJECT:
SALEM NUCLEAR GENERATING STATION, UNIT NOS. 1 AND 2, REQUEST FOR ADDITIONAL INFORMATION RE: AMENDMENT TO REFLECT ADDITION OF THE CHILLED WATER SYSTEM TO PROVIDE COOLING TO THE CONTAINMENT FAN COOLING UNITS (TAC NOS. MC2726 AND MC3649)
Dear Mr. Bakken:
By letter dated April 15, 2004, as supplemented by letter dated August 11, 2004, PSEG Nuclear, LLC (PSEG) submitted a request for changes to the Salem Nuclear Generating Station, Unit Nos. 1 and 2 (Salem), Technical Specifications (TSs). The proposed changes reflect the addition of the chilled water system to provide cooling water to the containment fan cooling units. The amendment request also proposes to revise a non-conservative Action Statement for Salem that allows three containment cooling fans to be inoperable under certain conditions.
The Nuclear Regulatory Commission (NRC) has determined that responses to the questions in the enclosure to this letter are necessary in order for the staff to complete its review. This enclosure provides questions from the Office of Nuclear Reactor Regulation (NRR), Division of Systems Safety and Analysis (DSSA) Probabilistic Safety and Assessment Branch. Please note that we may be providing additional questions regarding this amendment request, from NRR, DSSA Plant Systems Branch, later this year. At the time of our final request for additional information we will negotiate a response schedule with your staff. The enclosed questions have been forwarded electronically to Mr. Jesus Arias of your staff. If you have any questions I can be reached at (301) 415-1494.
Sincerely,
/RA/
George F. Wunder, Project Manager, Section 2 Project Directorate I Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-272 and 50-311
Enclosure:
As stated cc w/encl: See next page
November 10, 2004 Mr. A. Christopher Bakken, III President & Chief Nuclear Officer PSEG Nuclear - X15 P.O. Box 236 Hancocks Bridge, NJ 08038
SUBJECT:
SALEM NUCLEAR GENERATING STATION, UNIT NOS. 1 AND 2, REQUEST FOR ADDITIONAL INFORMATION RE: AMENDMENT TO REFLECT ADDITION OF THE CHILLED WATER SYSTEM TO PROVIDE COOLING TO THE CONTAINMENT FAN COOLING UNITS (TAC NOS. MC2726 AND MC3649)
Dear Mr. Bakken:
By letter dated April 15, 2004, as supplemented by letter dated August 11, 2004, PSEG Nuclear, LLC (PSEG) submitted a request for changes to the Salem Nuclear Generating Station, Unit Nos. 1 and 2 (Salem), Technical Specifications (TSs). The proposed changes reflect the addition of the chilled water system to provide cooling water to the containment fan cooling units. The amendment request also proposes to revise a non-conservative Action Statement for Salem that allows three containment cooling fans to be inoperable under certain conditions.
The Nuclear Regulatory Commission (NRC) has determined that responses to the questions in the enclosure to this letter are necessary in order for the staff to complete its review. This enclosure provides questions from the Office of Nuclear Reactor Regulation (NRR), Division of Systems Safety and Analysis (DSSA) Probabilistic Safety and Assessment Branch. Please note that we may be providing additional questions regarding this amendment request, from NRR, DSSA Plant Systems Branch, later this year. At the time of our final request for additional information we will negotiate a response schedule with your staff. The enclosed questions have been forwarded electronically to Mr. Jesus Arias of your staff. If you have any questions I can be reached at (301) 415-1494.
Sincerely,
/RA/
George F. Wunder, Project Manager, Section 2 Project Directorate I Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-272 and 50-311
Enclosure:
As stated cc w/encl: See next page DISTRIBUTION PUBLIC GMiller ECoby, RGN-I RDennig ACRS DCollins EThrom OGC PDI-2 Reading ADAMS Accession Number: ML043080276 OFFICE PDI-2/PE PDI-2/LA PDI-2/PM PDI-2/SC(A)
NAME GMiller CRaynor GWunder DCollins DATE 11/10/04 11/10/04 11/10/04 11/10/04 OFFICIAL RECORD COPY
Salem Nuclear Generating Station, Unit Nos. 1 and 2 cc:
Mr. Michael H. Brothers Dr. Jill Lipoti, Asst. Director Vice President - Site Operations Radiation Protection Programs PSEG Nuclear - X15 NJ Department of Environmental P.O. Box 236 Protection and Energy Hancocks Bridge, NJ 08038 CN 415 Trenton, NJ 08625-0415 Mr. John T. Carlin Vice President - Nuclear Assessments Brian Beam PSEG Nuclear - N10 Board of Public Utilities P.O. Box 236 2 Gateway Center, Tenth Floor Hancocks Bridge, NJ 08038 Newark, NJ 07102 Mr. Patrick S. Walsh Regional Administrator, Region I Vice President - Eng/Tech Support U.S. Nuclear Regulatory Commission PSEG Nuclear - N28 475 Allendale Road P.O. Box 236 King of Prussia, PA 19406 Hancocks Bridge, NJ 08038 Senior Resident Inspector Ms. Christina L. Perino Salem Nuclear Generating Station Director - Licensing & Nuclear Safety U.S. Nuclear Regulatory Commission PSEG Nuclear - N21 Drawer 0509 P.O. Box 236 Hancocks Bridge, NJ 08038 Hancocks Bridge, NJ 08038 Mr. Carl J. Fricker Jeffrie J. Keenan, Esquire Plant Manager PSEG Nuclear - N21 PSEG Nuclear - N21 P.O. Box 236 P.O. Box 236 Hancocks Bridge, NJ 08038 Hancocks Bridge, NJ 08038 Ms. R. A. Kankus Joint Owner Affairs PECO Energy Company Nuclear Group Headquarters KSA1-E 200 Exelon Way Kennett Square, PA 19348 Lower Alloways Creek Township c/o Mary O. Henderson, Clerk Municipal Building, P.O. Box 157 Hancocks Bridge, NJ 08038
REQUEST FOR ADDITIONAL INFORMATION REGARDING PROPOSED AMENDMENT REQUEST SALEM GENERATING STATION, UNIT NOS. 1 AND 2 DOCKET NOS. 50-272 AND 50-311 (1) On page 5-1 of WCAP-16193-P1, it is stated that the LOCA mass and energy releases are based on WCAP-10325-P-A2, which states that the core power is assumed to be 102% of the licensed power level. On page 5-3 of WCAP-16193-P, the allowance for calorimetric error is listed as +0.6% (of licensed power). Provide the justification for the use of this lower value.
(2) On page 5-15 of WCAP-16193-P, it is stated that no Zirc-water reaction heat was considered because the cladding temperature did not rise high enough for this reaction to proceed. The guidance presented in Standard Review Plan (SRP) 6.2.1.3, Mass and Energy Release Analysis for Postulated Loss-of-Coolant Accidents, for sources of energy includes the metal-water reaction. Clarify the statement in this WCAP as to whether or not the metal-water reaction energy is considered to be part of the mass and energy model and, if present, would be included in the containment response analysis.
(3) On Page 26/40 of Appendix A in WCAP-16193-P, the component cooling water (CCW) heat exchanger fouling factor is listed as 0.0016. The fouling factor is used to determine the CCW heat transfer rate. However, on page 6-7 of this WCAP (Table 6.1-3) the fouling factor is stated to be 0.0015. (The 0.0015 value is also quoted elsewhere, for example in the background material and in some of the Appendices in this WCAP).
This suggests the containment response analysis is based on less fouling than anticipated. (a) Clarify this apparent discrepancy, revise the documentation accordingly and, if necessary, revise the analyses. (b) How was the anticipated fouling factor determined?
(4) On page 6-9 of WCAP-16193-P, the containment spray performance during the injection phase is presented as a function of flow (gpm) versus containment pressure. In the COCO3 description, the spray (Section 2.5.2, Internal Spray System) is represented as the function of mass flow (lbm/sec) versus time, to be consistent with the spray treatment model in COCO. (a) How is the flow versus pressure data converted for use in COCO? (b) The spray flow for the recirculation flow is also presented as a single value (in gpm). How is this value converted for use in COCO?
1 Salem Unit 1 and Unit 2 Containment Response to LOCA [loss-of-coolant accident] and MSLB [main steamline break] for Containment Fan Cooler Unit/Service Water System Enhancement Project, WCAP-16193-P, March 2004.
2 Westinghouse LOCA Mass and Energy Release Model for Containment Design March 1979 Version, WCAP-10325-P-A, May 1983.
3 Containment Pressure Analysis Code (COCO), WCAP-8327, July 1974.
Enclosure
(5) The proposed containment pressure response analysis includes credit for the recirculation spray to demonstrate compliance with General Design Criterion 38 and for equipment qualification. The residual heat removal and component cooling water heat exchanger heat removal rates are also part of the analysis model. (a) How are the analysis values (as presented in Table 6.1-4 of WCAP-16193-P, for example flow rates and heat transfer rates) verified and maintained over the operating life of the plant?
(b) Are there technical specification (TS) requirements associated with these value? In Attachment 2, proposed TS markups of the submittal only the fan cooler flow performance is addressed.
(6) COCO (1974) predates the staff position (1979) for the allowance of 8% revaporization during a steamline break. Do the temperature calculations for equipment qualification include a model for revaporization during a steamline break as described in the 1979 NUREG-0588, Interim Staff Position on Environment Qualification of Safety-Related Electrical Equipment?
(7) The service water (SW) accumulator is sized to provide time for manual actuation of the safety-related SW if the non-safety-related chilled water system pressure boundary fails.
Attachment 4 of the submittal provides limited information. Provide a description of the safely analysis performed to establish the TS limits proposed for the SW accumulator (surveillance requirement (4.6.2.3). Include the size range covered for the break/leak in the chilled water system and the time allowed for the operator manual action.