ML13119A101

Supplemental Response Concerning License Amendment Request to Revise Technical Specifications to Re-establish Residual Heat Removal System Drywell Spray Function Requirements

ML13119A101
Person / Time
Site:	Peach Bottom
Issue date:	04/26/2013
From:	David Helker Exelon Generation Co
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
TAC ME9445, TAC ME9446
Download: ML13119A101 (5)

Text

10 CFR 50.90 April 26, 2013 U.S. Nuclear Regulatory Commission A TIN: Document Control Desk Washington, D.C. 20555-0001 Peach Bottom Atomic Power Station, Units 2 and 3 Renewed Facility Operating License Nos. DPR-44 and DPR-56 NRC Docket Nos. 50-2n and 50-278

Subject:

Supplemental Response Concerning License Amendment Request to Revise Technical Specifications to Re-establish Residual Heat Removal System Drywell Spray Function Requirements

References:

1) Letter from M. D. Jesse (Exelon Generation Company, LLC) to U.S.

Nuclear Regulatory Commission - License Amendment Request - Revise Technical Specifications to Re-establish Residual Heat Removal System Drywell Spray Function Requirements, dated August 29, 2012 (ML12243A497)

2) U.S. Nuclear Regulatory Commission Memorandum from R. B. Ennis to M. K. Khanna-Peach Bottom Atomic Power Station, Units 2 and 3, Draft Request for Additional Information (T AC Nos. ME9445 and ME9446),

dated December 4, 2012 (ML12340A386)

3) Letter from M.D. Jesse (Exelon Generation Company, LLC) to U.S.

Nuclear Regulatory Commission - Response to Request for Additional Information License Amendment Request to Revise Technical Specifications to Re-establish Residual Heat Removal System Drywell Spray Function Requirements, dated January 31, 2013 (ML13032A549)

By letter dated August 29, 2012 (Reference 1 ), Exelon Generation Company, LLC, (Exelon) submitted a License Amendment Request (LAR) for Peach Bottom Atomic Power Station (PBAPS), Units 2 and 3, requesting changes to the Technical Specifications (TS) to re-establish the requirements for the Residual Heat Removal (RHR) Drywell Spray function in TS. The requirements for the RHR Drywell Spray function are currently contained in Technical Requirements Manual (TAM) Section 3.12, "Residual Heat Removal (RHR)

Drywe/1 Spray." The proposed changes involve establishing a newTS Section 3.6.2.5, "Residual Heat Removal (RHR) Drywe/1 Spray," along with a supporting Bases section, in order to facilitate relocating applicable TAM requirements and re-establishing RHR Drywell Spray function requirements in TS.

Subsequently, it has been identified that the term "Mode" in Required Action C.2 on proposed TS page 3.6-30a should be capitalized, since the term is considered case-sensitive in its use (i.e., definition). The purpose of this letter is to supplement the Reference 1 submittal to provide the updated PBAPS, Units 2 and 3, TS pages reflecting the

U.S. Nuclear Regulatory Commission Supplemental Response License Amendment Request Re-establish RHR Drywell Spray Function Docket Nos. 50-277 and 50-278 April 26, 2013 Page 2 capitalization of the term MODE in Required Action C.2. The revised TS pages showing the change are included in the attachment to this letter.

Exelon has reviewed the information supporting a finding of No Significant Hazards Consideration and the Environmental Consideration provided to the NRC in the Reference 1 letter. The supplemental information provided in this submittal does not affect the bases for concluding that the proposed license amendment does not involve a significant hazards consideration. In addition, the supplemental information provided in this submittal does not affect the bases for concluding that neither an environmental impact statement nor an environmental assessment needs to be prepared in connection with the proposed amendment.

There are no regulatory commitments contained in this submittal.

If you have any questions or require additional information, please contact Richard Gropp at (61 0) 765-5557.

I declare under penalty of perjury that the foregoing is true and correct. Executed on the 26th day of April 2013.

Respectfully, David P. Helker Manager, Licensing and Regulatory Affairs Exelon Generation Company, LLC

Attachment:

Updated Technical Specifications Pages cc:

NRC Region I, Regional Administrator NRC Project Manager, NRR - Peach Bottom NRC Senior Resident Inspector-Peach Bottom S. T. Gray, State of Maryland R. R. Janati, Bureau of Radiation Protection, Commonwealth of Pennsylvania

ATIACHMENT PEACH BOTIOM ATOMIC POWER STATION UNITS 2 AND 3 NRC Docket Nos. 50-277 and 50-278 Renewed Facility Operating License Nos.

DPR-44 and DPR-56 Supplemental Response License Amendment Request to Re-establish Residual Heat Removal System Drywell Spray Function Requirements Updated Technical Specifications Pages 3.6-30a 3.6-30a

3.6 CONTAINMENT SYSTEMS 3.6.2.5 Residual Heat Removal (RHR) Drywell Spray RHR Drywell Spray 3.6.2.5 LCO 3.6.2.5 Two RHR drywell spray subsystems shall be OPERABLE.

APPLICABILITY:

MODES 1, 2, and 3.

ACTIONS CONDITION REQUIRED ACTION VVI II L..L..

.LVI'f TIME A.

One RHR drywell spray A.1 Restore RHR drywell 7 days subsystem inoperable.

spray subsystem to OPERABLE status.

B.

Two RHR drywell spray B.1 Restore one RHR 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> subsystems inoperable.

drywell spray subsystem to OPERABLE status.

C.

Required Action and c.1 Be in MODE 3.

12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> associated Completion Time not met.

AND C.2 Be in Meee 4.

36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> PBAPS UNIT 2 3.6-30a Amendment No. XXX

3.6 CONTAINMENT SYSTEMS 3.6.2.5 Residual Heat Removal (RHR) Drywell Spray RHR Drywell Spray 3.6.2.5 LCO 3.6.2.5 Two RHR drywell spray subsystems shall be OPERABLE.

APPLICABILITY:

MODES 1, 2, and 3.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A.

One RHR drywell spray A.1 Restore RHR drywell 7 days subsystem inoperable.

spray subsystem to OPERABLE status.

B.

Two RHR drywell spray B.1 Restore one RHR 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> subsystems inoperable.

drywell spray subsystem to OPERABLE status.

c.

Required Action and c.1 Be in MODE 3.

12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> associated Completion Time not met.

AND C.2 Be in f4ee:e 4.

36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> PBAPS UNIT 3 3.6-30a Amendment No. XXX