ML17180A372

Emergency Response Data System Changes

ML17180A372
Person / Time
Site:	Browns Ferry
Issue date:	06/29/2017
From:	Bono S Tennessee Valley Authority
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML17180A372 (5)

Text

Tennessee Valley Authority, Post Office Box 2000, Decatur, Alabama 35609-2000 June 29, 2017 10 CFR 50.4 10 CFR 50, Appendix E A TIN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Browns Ferry Nuclear Plant, Units 1, 2, and 3 Renewed Facility Operating License Nos. DPR-33, DPR-52, and DPR-68 NRC Docket Nos. 50-259, 50-260, and 50-296

Subject:

Emergency Response Data System Changes The purpose of this letter is to provide changes to the Emergency Response Data System (EROS), as required by Title 10 of the Code of Federal Regulations (1 O CFR) 50, Appendix E, Section Vl.3, "Maintaining Emergency Response Data System" for Browns Ferry Nuclear Plant (BFN), Units 1, 2, and 3. This revision to the EROS changed the upper range limit on EROS data point SPDS0024. The changes to the EROS Data Point Library are summarized in the Enclosure.

This change is being provided in accordance with 10 CFR 50, Appendix E, Section Vl.3.a, which requires a notification within 30 days after the changes are made for any software or hardware changes to any transmitted data points identified in the Data Point Library. This change went into effect on June 2, 2017.

There are no new regulatory commitments in this letter. Please direct questions concerning this issue to Jamie L. Paul at (256) 729-2636.

R~~\~

S. M. Bono Site Vice President

Enclosure:

Emergency Response Data System Data Point Library Change cc (w/Enclosure):

NRC Regional Administrator - Region II NRC Senior Resident Inspector - Browns Ferry Nuclear Plant

ENCLOSURE Browns Ferry Nuclear Plant Units 1, 2, and 3 Emergency Response Data System Data Point Library Change (See Enclosed)

BFN Emergency Response Data System 1-Tl-411 Unit 1 (EROS) Data Point Library Rev.0005 Paae 43 of 43 Appendix A (Page 38 of 38)

RADIOACTIVITY OF EROS Point Number 38 EFF GAS RAD SPDS0024 RELEASED GASES Date: 12/20/2006 Reactor Unit: BF1 Data Feeder: 1 NRC EROS Parameter: EFF GAS RAD Point ID: SPDS0024 Plant Spec Point Desc: STACK RELEASE RATE- COMPOSED GenericCond Desc: Radioactivity of Released Gasses Analog/Digital . A Engr Units/Dig States: Ci/SEC Engr Units N/A Minimum Instr Range: 0.0 Maximum Instr Range: 8.5E6 Zero Point

Reference:

N/A Reference Point Notes: N/A PROC or SENS: p Number of Sensors: 7 How Processed: See Below Sensor Locations: Plant Stack Alarm/Trip Set Points: All modes: HIHl=140 Hl=14 NID Power Cutoff Level: N/A NID Power Cut-On N/A Instrument Failure Mode: LOW Temperature y Comp~nsation:

Level Reference Leg: N/A How Processed: Stack flow (cfm) X Stack Release Activity Unique System Desc.: (uCi/cc) (MULT). where Stack Activity = Monitor counts X Calibration constant X Temperature correction X Pressure correction X Dead Time correction.

BFN Emergency Response Data 2-Tl-411 Unit2 System (EROS) Data Point Library Rev.0005 Page 43 of 43 Appendix A (Page 38 of 38)

EROS Point Number: 38 EFF GAS RAD SPDS0024 Radioactivity of Released Gasses Date: 9/12/2005 Reactor Unit: BF2 Data Feeder: 1 NRC EROS Parameter: EFF GAS RAD Point ID: SPDS0024 Plant Spec Point Desc: STACK RELEASE RATE - COMPOSED GenericCond Desc: Radioactivity of Released Gasses Analog/Digital: A Engr Units/Dig States: Ci/SEC Engr Units N/A Minimum Instr Range: 0.0 Maximum Instr Range: 8.5E6 Zero Point

Reference:

N/A Reference Point Notes: N/A PROC or SENS p Number of Sensors: 7 How Processed: See Below Sensor Locations: Plant Stack Alarmffrip Set Points: All modes: HIHl=140, Hl=14 NID Power Cutoff Level: N/A NID Power Cut-On N/A Instrument Failure Mode: LOW Temperature Compensation: y Level Reference Leg: N/A Unique System Desc: How Processed:

Stack flow (cfm) X Stack Activity (uCi/cc) (MULT) where Stack Activity = Monitor counts X Calibration constant X Temperature correction X Pressure correction X Dead Time correction

BFN Emergency Response Data 3-Tl-411 Unit 3 System (EROS) Data Point Library Rev.0005 Page 43 of 43 Appendix A (Page 38 of 38)

EROS Point Number: 38 EFF GAS RAD SPDS0024 Radioactivity of Released Gasses Date: 9/12/2005 Reactor Unit: BF3 Data Feeder: 1 NRG EROS Parameter: EFF GAS RAD Point ID: SPDS0024 Plant Spec Point Desc: STACK RELEASE RATE-COMPOSED GenericCond Desc: Radioactivity of Released Gasses Analog/Digital: A Engr Units/Dig States: Ci/SEC Engr Units N/A Minimum Instr Range: 0.0 Maximum Instr Range: 8.5E6 Zero Point

Reference:

N/A Reference Point Notes: N/A PROC or SENS p Number of Sensors: 7 How Processed : See Below Sensor Locations: Plant Stack Alarmffrip Set Points: All modes: HIHl=140 Hl=14 NID Power Cutoff Level: N/A NID Power Cut-On N/A Instrument Failure Mode: LOW Temperature Compensation: y Level Reference Leg: N/A Unique System Desc: How Processed:

Stack flow (cfm) X Stack Actity (uCi/cc) (MUL T) where Stack Activity = X Pressure correction X Dead Time correction Monitor counts X Calibration constant X Temperature correction