RS-11-003, Supplement to License Amendment Request for Measurement Uncertainty Recapture Power Uprate

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Supplement to License Amendment Request for Measurement Uncertainty Recapture Power Uprate
ML110100447
Person / Time
Site: Limerick  Constellation icon.png
Issue date: 01/07/2011
From: Jesse M
Exelon Generation Co, Exelon Nuclear
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
RS-11-003
Download: ML110100447 (5)
v • d • e


Text

Exelon Exelon Nuclear www.exeloncorp.com 200 Exelon Way Nuclear Kennett Square, PA 19348 10 CFR 50.90 10 CFR 50, Appendix K RS-1 1-003 January 07, 2011 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Limerick Generating Station, Units 1 and 2 Facility Operating License Nos. NPF-39 and NPF-85 NRC Docket Nos. 50-352 and 50-353

Subject:

Supplement to License Amendment Request for Measurement Uncertainty Recapture Power Uprate

References:

1. Letter from M. D. Jesse (Exelon Generation Company, LLC) to U. S. NRC, "Request for License Amendment Regarding Measurement Uncertainty Recapture Power Uprate," dated March 25, 2010 In Reference 1, Exelon Generation Company, LLC (Exelon) submitted a license amendment request for Limerick Generating Station (LGS), Units 1 and 2. The proposed license amendment request would implement a power uprate of approximately 1.65% for each LGS unit by utilizing increased accuracy of feedwater flow measurement. The proposed amendment also includes a related modification to the Standby Liquid Control System that is needed to support Anticipated Transient Without Scram response at the proposed uprated conditions.

Per a teleconference on January 05, 2011 between the NRC staff and Exelon, it was identified that the submitted markup of proposed Technical Specifications page 3/4 1-19 for LGS Units 1 and 2 did not clearly reflect the description and evaluation provided in the March 25, 2010 proposed amendment. Therefore, Attachment 1 to this letter provides a revised markup of proposed Technical Specifications page 3/4 1-19 for LGS Units 1 and 2 that supersedes the pages submitted on March 25, 2010.

U. S. Nuclear Regulatory Commission Supplement to LAR for Measurement Uncertainty Recapture Power Uprate January 07, 2011 Page 2 Exelon has reviewed the information supporting a finding of no significant hazards consideration, and the environmental consideration provided to the NRC in Reference 1. The supplemental information provided in this letter does not affect the bases for concluding that the proposed license amendment does not involve a significant hazards consideration. In addition, the additional 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 letter.

Should you have any questions concerning this request, please contact Mr. Kevin F. Borton at (610) 765-5615.

I declare under penalty of perjury that the foregoing is true and correct. Executed on the 7th day of January 2011.

Respectf ully, Michael D. e Manager, Licensing - Power Uprate Exelon Generation Company, LLC - Revised proposed markup Technical Specifications page 3/4 1-19 for LGS Units 1 and 2.

cc:

NRC Regional Administrator, Region I NRC Senior Resident Inspector - Limerick Generating Station NRC Project Manager, NRR - Limerick Pennsylvania Department of Environmental Protection - Bureau of Radiation Protection Supplemental Information Limerick Generating Station, Units 1 and 2 Revised Markup of Proposed Technical Specifications Pages TS Page 3/4 1-19 (Units 1 and 2)

REACTIVITY CONTROL SYSTEMS 3/4.1.5 STANDBY LIQUID CONTROL SYSTEM LIMITING CONDITION FOR OPERATION 3.1.5 The standby liquid control system shall be OPERABLE and consist of a...iamum at the following:

a.

In OPERATIONAL CONDITIONS 1 and 2, two pumps and corresponding flow

paths, a minimum of
b.

In OPERATIONAL CONDITION 3, one pump and corresponding flow path.

APPLICABILITY:

OPERATIONAL CONDITIONS 1, 2, and 3 ACTION:

a.

With only one pump and corresponding explosive valve OPERABLE, in OPERATIONAL CONDITION 1 or 2, restore one inoperable pump and corresponding explosive valve to OPERABLE status within 7 days or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

b.

With standby liquid control system otherwise inoperable, in OPERATIONAL CONDITION 1, 2, or 3, restore the system to OPERABLE status within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the next 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

SURVEILLANCE REQUIREMENTS 4.1.5 The standby liquid control system shall be demonstrated OPERABLE:

a.

In accordance with the Surveillance Frequency Control Program by verifying that:

1.

The temperature of the sodium pentaborate solution is within the limits of Figure 3.1.5-1.

2.

The available volume of sodium pentaborate solution is at least 3160 gallons.

3.

The temperature of the pump suction piping is within the limits of Figure 3.1.5-1 for the most recent concentration analysis.

LIMERICK - UNIT 1 3/4 1-19 Amendment No.

8,6,--,+

REACTIVITY CONTROL SYSTEMS 3/4.1.5 STANDBY LIQUID CONTROL SYSTEM LIMITING CONDITION FOR OPERATION 3.1.5 The standby liquid control system shall be OPERABLE and consist of aL the following:

a.

In OPERATIONAL CONDITIONS 1 and 2, two pumps and corresponding flow paths,\\

aminimum of]

b.

In OPERATIONAL CONDITION 3, one pump and corresponding flow 'path.

APPLICABILITY:

OPERATIONAL CONDITIONS 1, 2 and 3 ACTION:

a.

With only one pump and corresponding explosive valve OPERABLE, in OPERATIONAL CONDITION 1 or 2, restore one inoperable pump and corresponding explosive valve to OPERABLE status within 7 days or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

b.

With standby liquid control system otherwise inoperable, in OPERATIONAL CONDITION 1, 2, or 3, restore the system to OPERABLE status within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the next 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

SURVEILLANCE REQUIREMENTS 4.1.5 The standby liquid control system shall be demonstrated OPERABLE:

a.

In accordance with the Surveillance Frequency Control Program by verifying that:

1.

The temperature of the sodium pentaborate solution is within the limits of Figure 3.1.5-1.

2.

The available volume of sodium pentaborate solution is at least 3160 gallons.

3.

The temperature of the pump suction piping is within the limits of Figure 3.1.5-1 for the most recent concentration analysis.

LIMERICK -

UNIT 2 3/4 1-19 Amendment No.

44, 44, 44,46, t4,

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