NRC 2002-0010, Technical Specification Bases B3.3.1 Revision for Point Beach Nuclear Plant, Units 1 and 2

Technical Specification Bases B3.3.1 Revision for Point Beach Nuclear Plant, Units 1 and 2

ML020440517
Person / Time
Site:	Point Beach
Issue date:	01/17/2002
From:	Thomas Taylor Nuclear Management Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NRC 2002-0010
Download: ML020440517 (5)

Text

Kewaunee Nuclear Power Plant Point Beach 6610 Nuclear Nuclear Plant Road N490 Highway 42 Two Rivers, WI 54241 Kewaunee, WI 54216-9511 920.755.2321 920.388.2560 Kewaunee / Point Beach Nuclear Committed to NuclearExcellence Operated by Nuclear Management Company, LLC 10 CFR 50.36 NRC 2002-0010 January 17, 2002 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555 Dockets 50-266 and 50-301 Point Beach Nuclear Plant, Units 1 and 2 TECHNICAL SPECIFICATION BASES B 3.3.1 REVISION Ladies/Gentlemen:

Beach Nuclear Plant Nuclear Management Company, LLC (NMC), licensee for the Point Bases for Technical (PBNP) Units 1 and 2, hereby submits a revision to the following A description of the changes is provided in Specifications (TS): B 3.3.1, "RPS Instrumentation".

Attachment I.

to the requirements of 10 CFR These changes have been screened for evaluation pursuant were determined to be acceptable.

50.59 in accordance with approved PBNP procedures and page indicating the changes.

Attachment II provides a clean copy of the affected TS Bases Sincerely, Thomas H. Taylor Plant Manager RDS/kmd Attachments: II - Description and Assessment of Changes

- Revised Technical Specifications Bases Page NRC Project Manager cc: NRC Regional Administrator PSCW NRC Resident Inspector D

NRC 2002-0010 Attachment I Page 1 of 2 DESCRIPTION AND ASSESSMENT OF CHANGES TECHNICAL SPECIFICATION BASES B 3.3.1 REVISION POINT BEACH NUCLEAR PLANT, UNITS 1 AND 2

NRC 2002-0010 Attachment I Page 2 of 2

1.0 INTRODUCTION

Nuclear Management Company, LLC (NMC), licensee for the Point Beach Nuclear Plant (PBNP) Units 1 and 2, hereby submits a revision to the following Bases for Technical Specifications (TS): B 3.3.1, "RPS Instrumentation".

2.0 DESCRIPTION

AND ANALYSIS TS Limiting Condition for Operation (LCO) 3.3.1, Required Action D.1, requires an inoperable channel to be placed in the trip condition in 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />. The Bases discussion of the Completion Time requirements for LCO 3.3.1, Required Action D.1, had incorrectly stated this time as 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />. Therefore, this statement was revised to correct the 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> to 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> to accurately reflect the requirements of TS LCO 3.3.1, Required Action D.1.

NRC 2002-0010 Attachment II Page 1 of 2 REVISED TECHNICAL SPECIFICATIONS BASES PAGE (incorporating proposed changes)

RPS Instrumentation B 3.3.1 BASES ACTIONS (continued) The additional hour provides sufficient time to accomplish the action in an orderly manner. With the RTBs open, the Manual Reactor Trip Function is no longer required.

D.1 and D.2 Condition D applies to the following reactor trip Functions:

"* Power Range Neutron Flux-High;

"* Power Range Neutron Flux-Low;

"* Overtemperature AT;

"* Overpower AT;

"* Pressurizer Pressure-High;

"* SG Water Level-Low Low; and

"* SG Water Level - Low coincident with Steam Flow/Feedwater Flow Mismatch.

A known inoperable channel must be placed in the tripped condition within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />. Placing the channel in the tripped condition results in a partial trip condition requiring only one-out-of-two logic for actuation of the two-out-of-three trips and one-out-of-three logic for actuation of the two-out-of-four trips.

If the inoperable channel cannot be placed in the tripped condition within the specified Completion Time, the unit must be placed in a MODE where these Functions are not required OPERABLE. An additional 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> is allowed to place the unit in MODE 3. Six hours is a reasonable time, based on operating experience, to place the unit in MODE 3 from full power in an orderly manner and without challenging unit systems.

E.1 and E.2 Condition E applies to the Underfrequency Bus A01 and A02 trip function. With one channel inoperable, the inoperable channel must be placed in the tripped condition within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />. Placing the channel in the tripped condition results in a partial trip condition requiring only one additional channel to initiate a reactor trip above the P-7 setpoint. The 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> to place the channel in the tripped condition is necessary due to plant design requiring maintenance personnel to effect the trip of the B 3.3.1-29 12/19/01 Point Beach