ML041260260
| ML041260260 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 05/03/2004 |
| From: | Bezilla M FirstEnergy Nuclear Operating Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 3034, TAC MC0366 | |
| Download: ML041260260 (5) | |
Text
FENOC FirstEnergy Nuclear Operating Company 5501 North State Route 2 Oak Harbor, Ohio 43449 Mark B. Bezilla 415 Vice President - Nuclear Fax: 41S Docket Number 50-346 License Number NPF-3 Serial Number 3034 May 3, 2004 United States Nuclear Regulatory Commission Document Control Desk Washington, D. C. 20555-0001
Subject:
Supplemental Information Regarding License Amendment Application to Modify Technical Specification 3/4.5.2, Emergency Core Cooling Systems - ECCS Subsystems - Tayg 2 280 'F (License Amendment Request No. 03-0004; TAC No. MC0366)
Ladies and Gentlemen:
On August 11, 2003, the FirstEnergy Nuclear Operating Company (FENOC) submitted an application for an amendment to the Davis-Besse Nuclear Power Station (DBNPS), Unit Number 1, Operating License Number NPF-3, Appendix A Technical Specifications, regarding a proposed modification to Technical Specification (TS) 3/4.5.2, "Emergency Core Cooling Systems - ECCS Subsystems - Tayg 2 280 'F." This TS Section includes Surveillance Requirement (SR) 4.5.2.f, which requires each ECCS Subsystem to be demonstrated operable by performing a vacuum leakage rate test of the watertight enclosure for Decay Heat Removal System valves DH-1 1 and DH-12 that assures the electric motor operators on valves DH-1 1 and DH-12 will not be flooded for at least seven (7) days following a Loss-of-Coolant Accident (LOCA). The proposed amendment (DBNPS letter Serial Number 2834) would allow the relocation of SR 4.5.2.f to the DBNPS Updated Safety Analysis Report (USAR) Technical Requirements Manual (TRM). Supplemental information was submitted by letter dated January 9, 2004 (DBNPS letter Serial Number 2996).
On February 17, 2004, FENOC received an informal request for additional information regarding the license amendment application. Enclosure I provides the response to this request. This supplemental information does not affect the conclusion of the license amendment application that the proposed changes do not involve a significant hazards consideration and do not have an adverse effect on nuclear safety.
g-32.-7676 g-321-7582 l
DOC) I
Docket Number 50-346 License Number NPF-3 Serial Number 3034 Page 2 Should you have any questions or require additional information, please contact Mr. Gregory A. Dunn, Manager - Regulatory Affairs, at (419) 321-8450.
The statements contained in this submittal, including its associated enclosures and attachments, are true and correct to the best of my knowledge and belief. I am authorized by the FirstEnergy Nuclear Operating Company to make this submittal. I declare under penalty of perjury that the foregoing is true and correct.
Executed on:
__3,_
By:
1)
Mark B. Bezilla, Vicy esident - Nuclear MKL Enclosures cc:
Regional Administrator, NRC Region III J. B. Hopkins, NRC/NRR Senior Project Manager D. J. Shipley, Executive Director, Ohio Emergency Management Agency, State of Ohio (NRC Liaison)
C. S. Thomas, NRC Region m, DB-1 Senior Resident Inspector Utility Radiological Safety Board
Docket Number 50-346 License Number NPF-3 Serial Number 3034 Page 1 RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE AMENDMENT REQUEST (LAR) 03-0004 FOR DAVIS-BESSE NUCLEAR POWER STATION UNIT NUMBER 1 Question:
The proposed relocation of Surveillance Requirement (SR) 4.5.2.f from the Technical Specifications (TS) to the Updated Safety Analysis Report Technical Requirements Manual (TRM) lacks a justification that the TS Limiting Condition for Operation (LCO) 3.5.2.d requirement can be accomplished without the relocated SR in TS.
DBNPS Response to Question:
Technical Specification (TS) Limiting Condition for Operation (LCO) 3.5.2 requires that two independent Emergency Core Cooling System (ECCS) subsystems be operable, with each subsystem comprised of: (a) one operable High Pressure Injection (HPI) pump, (b) one operable Low Pressure Injection (LPI) pump, (c) one operable decay heat cooler, and (d) an operable flow path capable of taking suction from the Borated Water Storage Tank (BWST) on a safety injection signal and manually transferring suction to the containment sump during the recirculation phase of operation.
The associated TS Bases states that each ECCS subsystem consists of one HPI train, one LPI train (including the associated decay heat cooler), and the necessary piping, valves, instrumentation and controls to provide the required flow paths from the BWST or the containment emergency sump to the reactor vessel.
Based on the above, the requirements of LCO 3.5.2.d concern the ECCS suction flow path from the BWST or from the containment emergency sump to the reactor vessel. This flow path does not go through Decay Heat (DH) dropline valves DH-1 1 and DH-12 that are the subject of SR 4.5.2.f. Rather, these dropline valves are in the flow path used for the normal DH removal suction and for boric acid precipitation control, if required. Existing SR 4.5.2.d.2.b provides for testing the transfer of the ECCS flow path from the BWST to the containment emergency sump, and this SR is not being relocated. A simplified diagram depicting these flow paths is provided in the attachment. Accordingly, the relocation of SR 4.5.2.f from the TS to the TRM will not affect compliance with LCO 3.5.2.d.
Docket Number 50-346 License Number NPF-3 Serial Number 3034 Attachment Note
- 1. This is a simplified schematic. Not all flow patlhs/components are shown.
- 2. Valves are shown in normal lineup.
Docket Number 50-346 License Number NPF-3 Serial Number 3034 COMMITMENT LIST THE FOLLOWING LIST IDENTIFIES THOSE ACTIONS COMMITTED TO BY THE DAVIS-BESSE NUCLEAR POWER STATION (DBNPS) IN THIS DOCUMENT. ANY OTHER ACTIONS DISCUSSED IN THE SUBMITTAL REPRESENT INTENDED OR PLANNED ACTIONS BY THE DBNPS. THEY ARE DESCRIBED ONLY FOR INFORMATION AND ARE NOT REGULATORY COMMITMENTS. PLEASE NOTIFY THE MANAGER - REGULATORY AFFAIRS (419-321-8450) AT THE DBNPS OF ANY QUESTIONS REGARDING THIS DOCUMENT OR ANY ASSOCIATED REGULATORY COMMITMENTS.
COMMITMENTS DUE DATE None.
N/A.