ML060260325
| ML060260325 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 02/01/2006 |
| From: | Geoffrey Miller Plant Licensing Branch III-2 |
| To: | Darrell Roberts Plant Licensing Branch III-2 |
| Miller G, NRR/DLPM, 415-2481 | |
| References | |
| TAC MC8434 | |
| Download: ML060260325 (4) | |
Text
February 1, 2006 MEMORANDUM TO: Darrell J. Roberts, Chief Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation FROM:
G. Edward Miller, Project Manager /RA/
Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation
SUBJECT:
SEABROOK STATION, UNIT NO. 1, FACSIMILE TRANSMISSION, DRAFT REQUEST FOR ADDITIONAL INFORMATION (RAI) TO BE DISCUSSED IN AN UPCOMING CONFERENCE CALL (TAC NO. MC8434)
The enclosed draft RAI was transmitted by facsimile on February 1, 2006, to Mr. Mike OKeefe, FPL Energy Seabrook, LLC (FPLE). This draft RAI was transmitted to facilitate the technical review being conducted by the Nuclear Regulatory Commission (NRC) staff and to support a conference call with FPLE in order to clarify certain items in the licensees submittal. The draft RAI is related to FPLEs submittal dated September 22, 2005, regarding a measurement uncertainty recapture power uprate. Review of the draft RAI would allow FPLE to determine and agree upon a schedule to respond to the RAI. This memorandum and the attachment do not convey a formal request for information or represent an NRC staff position.
Docket No. 50-443
Enclosure:
February 1, 2006 MEMORANDUM TO: Darrell J. Roberts, Chief Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation FROM:
G. Edward Miller, Project Manager
/RA/
Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation
SUBJECT:
SEABROOK STATION, UNIT NO. 1, FACSIMILE TRANSMISSION, DRAFT REQUEST FOR ADDITIONAL INFORMATION (RAI) TO BE DISCUSSED IN AN UPCOMING CONFERENCE CALL (TAC NO. MC8434)
The enclosed draft RAI was transmitted by facsimile on February 1, 2006, to Mr. Mike OKeefe, FPL Energy Seabrook, LLC (FPLE). This draft RAI was transmitted to facilitate the technical review being conducted by the Nuclear Regulatory Commission (NRC) staff and to support a conference call with FPLE in order to clarify certain items in the licensees submittal. The draft RAI is related to FPLEs submittal dated September 22, 2005, regarding a measurement uncertainty recapture power uprate. Review of the draft RAI would allow FPLE to determine and agree upon a schedule to respond to the RAI. This memorandum and the attachment do not convey a formal request for information or represent an NRC staff position.
Docket No. 50-443
Enclosure:
RAI DISTRIBUTION:
Public NTrehan RidsNrrDeEeeb LPL1-2 RidsNrrPMGMiller Accession No.: ML060260325 OFFICE NRR/LPL1-2/PM NRR/LPL1-2/LA NRR/EEEB/BC NRR/LPL1-2/BC NAME GEMiller:em CRaynor RJenkins DRoberts DATE 2//1/06 2/1/06 1/24/06 2/1/06 OFFICIAL RECORD COPY
Enclosure REQUEST FOR ADDITIONAL INFORMATION SEABROOK STATION, UNIT NO. 1 (TAC NO. MC8434)
By letter dated September 22, 2005, FPL Energy Seabrook, LLC (FPLE) submitted a license amendment request for a change to the Seabrook Station, Unit No. 1 (Seabrook) Technical Specifications requesting a measurement uncertainty recapture power uprate. The Nuclear Regulatory Commission staff requests the following additional information to complete its review.
1.
Please address and discuss the following points:
a.
Identify the nature and quantity of mega volt-amps reactive (MVAR) support necessary to maintain post-trip loads and minimum voltage levels.
b.
Identify what MVAR contributions Seabrook is credited by the transmission system operator (TSO) in order to support the bulk electric supply system (i.e.,
the grid).
c.
Identify any changes to questions 1.a and 1.b that would follow implementation of the power uprate.
d.
Address the compensatory measures that FPLE would take to compensate for the depletion of the nuclear unit MVAR capability on a grid-wide basis due to this power uprate.
e.
Provide an evaluation of the impact of any MVAR shortfall listed in question 1.d on the ability of the offsite power system to maintain minimum post-trip voltage levels and to supply power to safety buses during peak electrical demand periods. The subject evaluation should document any information exchanges between the TSO and Seabrook on this matter.
2.
Provide a detailed comparison of the existing ratings with the uprated ratings and the effect of the power uprate on the following equipment:
a.
Main generator rating and power factor b.
Isophase bus, and modifications to the cooling system c.
The new main power transformers (include a detailed description of the new transformers) d.
Unit auxiliary/start-up transformers e.
Main generator breaker 3.
Provide a list of loads affected by the power uprate change. Identify the motor loads before and after the power uprate change.
4.
Please discuss, in detail, the impact of the proposed power uprate on the plants ability to cope with, and recover from, a station black out (SBO) event consistent with Title 10 of the Code of Federal Regulations (10 CFR) Section 50.63. The SBO coping analysis should address the following topics:
a.
Condensate inventory for decay heat removal b.
Class 1E battery capacity c.
Compressed air d.
Effects of loss of ventilation e.
Containment isolation 5.
Please discuss, in detail, the environmental qualification of electrical equipment that is important to safety to assure this equipment remains functional during and following design basis events. Acceptance criteria are based on 10 CFR 50.49 as it relates to specific requirements regarding the qualification of electrical equipment important to safety that is located in a harsh environment. For reference, specific review criteria are contained in the Standard Review Plan, Section 3.11