NL-15-1569, Vogtle Electric Generating Plant Units 1 & 2, Changes to Emergency Plan and ERDS Data Point Library

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Vogtle Electric Generating Plant Units 1 & 2, Changes to Emergency Plan and ERDS Data Point Library
ML15233A288
Person / Time
Site: Vogtle  Southern Nuclear icon.png
Issue date: 08/17/2015
From: Pierce C R
Southern Nuclear Operating Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
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ML15233A287 List:
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NL-15-1569
Download: ML15233A288 (7)
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Charles R. Pierce Regulatory Affairs Director Southern Nuclear Operating Company, Inc.40 Inverness Center Parkway Post Office Box 1295 Birmingham, AL 35242 Tel 205.992.7872 Fax 205.992.7601" SOUTHERN ~NUCLEAR A SOUTHERN COMPANY AUG 1 7 2015 Docket Nos.: 50-424 50-425 NL-15-1569 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555-000 1 Vogtle Electric Generating Plant Units 1 and 2 Chanqies to Emerqiencv Plan and ERDS Data Point Library Ladies and Gentlemen:

In accordance with 10 CFR 50.4 and 10 CFR 50, Appendix E, Section V, Southern Nuclear Operating Company (SNO) hereby submits Revision 65 to the Vogtle Units 1 and 2 Emergency Plan, effective August 15, 2015. This revision incorporates changes associated with plant upgrades to the meteorological monitoring system implemented on July 18, 2015. As a result of these plant upgrades, SNC is also submitting changes to the Vogtle Unit 1 Emergency Response Data System (ERDS) data point library in accordance with 10 CER 50 Appendix E,Section VI Item 3.SNO has performed an analysis, pursuant to 10 CFR 50.54(q), demonstrating that the changes do not reduce the effectiveness of the plan and the plan, as changed, continues to meet the requirements of 10 CFR 50, Appendix E and the planning standards of 10 CFR 50.47(b).

SNC submits the following summary of its analysis: SNC has implemented design changes and modifications to upgrade the meteorological tower and instruments in order to enhance reliability and personnel safety. The new instruments are more robust, reliable, and accurate than the previous outdated instruments, and replacement parts are more readily, available.

One new tower, with primary and secondary (back-up) instruments at both the 10 meter and 60 meter levels, replaces two aging and degraded towers.The new tower provides for improved safety for employees.

No ERDS software or hardware modifications were made; however, the data input system has changed. New communication equipment transmits instrumentation data via a new fiber optic system with primary inputs transmitted to the Unit 1 integrated plant computer (IPC) and secondary inputs transmitted to the Unit 2 IPC. This system replaces an outdated microwave system that AODSOL U. S. Nuclear Regulatory Commission NL-1 5-1569 Page 2 transmitted only to the Unit 1 IPC. Lastly, the modification includes a new shelter with upgraded workstations and electronics for data. acquisition.

These changes to the Vogtle Units 1 and 2 emergency plan upgrade and enhance the ability to monitor meteorological data, provide greater diversity of data communications, and improve the reliability of the structures, systems, and instruments.

Therefore, the changes to the Vogtle Units 1 and 2 emergency plan do not reduce SNC's capability to perform any emergency planning functions in the event of an emergency.

This letter contains no NRC commitments.

If you have any questions, please contact Ken McElroy at (205) 992-7369.Respecflysmitted, C. R. Pierce Regulatory Affairs Director

Enclosure:

1. Vogtle Electric Generating Plant Units 1 and 2 Emergency Plan Revision 65 August 2015. (DVD)2. Marked-up Changes to the Vogtle Unit 1 ERDS Data Point Library cc: Southern Nuclear Operating Company Mr. S. E. Kuczynski, Chairman, President

& CEO Mr. D. G. Bost, Executive Vice President

& Chief Nuclear Officer Mr. D. R. Madison, Vice President-Fleet Operations Mr. B. K. Taber, Vice President-Vogtle 1 & 2 Mr. M. D. Meier, Vice President-Regulatory Affairs Mr. R. L. Mansfield, Emergency Preparedness Director Mr. S. M. Odom, Emergency Preparedness Manager Mr. G. W. Gunn, Regulatory Affairs Manager- Vogtle 1 & 2 RType: Vogtle=CVC7000 U.S. Nuclear Reciulatory Commission Mr. V. M. McCree, Regional Administrator Mr. L. M. Cain, Senior Resident Inspector-Vogtle 1 & 2 Mr. R.E. Martin, NRR Project Manager- Vogtle 1 & 2 Director, Division of Spent Fuel Management State of Georqia Mr. J. H. Turner, Director-Environmental Protection Division Enclosure 1 Vogtle Electric Generating Plant Units 1 and 2 Emergency Plan Revision 65 August 2015 Enclosure 2 Vogtle Electric Generating Plant Units 1 and 2 Software Requirements Specification Emergency Response Data System (ERDS)Marked-Up Changes to the ERDS Data Point Library Chapter 13 -Emergency Response Data System (ERDS)Date Reactor Unit Data Feeder NRC ERDS Parameter Point ID Plant Spec. Point Generic/Cotid.

Analog/Digital Engr. Units/Dig Engr. Units Minimum Instr.Maximum Instr.Zero Point Reference Point Proc or Sens.Number of Sensors How Processed Sensor Locations Alarm/Trip Setpoints NI Power Cut Off NI Power Turn On Instrument Failure Temp. Comp.Level

Reference:

VOl:N/A:WIND SPEED: 6170:PRIMARY MET TOWER 10 METER WIND SPEED:WIND SPEED AT THE REACTOR SITE:MPH:. 3.,t 100,.0,MPI 0.0 to 112.0 MPH*0.0:-l-660- 112.0:N/A:N/A: -S-- P:N/'A -Till3 IS A DIRECT SENSOR INPUT SELECTED INPUT -SEE SYSTEM DESCRIPTION

10 METERS ON THE PRIMARY MET TOWER*NONE:N/A:N/A:N/A: N:N/A I I Unique System Measures the wind speed at the primary meteorological monitoring station at the 10 meter level.Two redundant instruments are located on the meteorological tower at the 10 meter level. Point S6471 is the Primary direct sensor input and Point S6171 is the Secondary (Back-up) direct sensor input. Point S6170 selects the direct sensor input from S6471 (Primary sensor) if its quality value is Good; else the direct sensor input is from S6171 (Secondary sensor) selected.I Appendix C Page 59 2)\Chapter
13. doc Chapter 13 -Emergency Response Data System (EROS)Date Reactor Unit Data Feeder NRC ERDS Parameter Point ID Plant Spec. Point Generic/Cond.

Analog/Digital Engr. Units/Dig Engr. Units Minimum Instr.Maximum Instr.Zero Point Reference Point Proc or Seas.Number of Sensors How Processed Sensor Locations Alarm/Trip Setpoints NI Power Cut Off NI Power Turn On Instrument Failure Temp. Comp.Level

Reference:

VO1:N/A:WIND DIR:UY6571:PRIMARY MET TOWER 10 METER WIND DIR:WIND DIR AT THE REACTOR SITE: A:DEC:0.0 to 360.0 DEC: 0.0: 360.0:N/A:N/A:-1-- 2: ONVERTE DIR, -SEE SYSTE v DES CRIP, SELECTED INPUT -SEE SYSTEM DESCRIPTION 1 0 METERS ON THE PRIMARY MET TOWER:NONE:N/A:N/A:N/A:N/A Unique System jul 7 A AAL ....fl~U .. L .. $ ..L^IA ..A.....A aLc .i... fAA UflA n AAAL.....

l TVgLA..A I AAVALLJ +i AA ... ... .,LLJA ..- ... .1 L1A I"71 c..:-, ........ e 171 Two redundant wind direction instruments are located on the meteorological tower at the 10 meter level. Point Y6472 measures the Primary direct sensor input and Point Y6172 measures the Secondary (Back-up) direct sensor input. Point UY657 1 selects the direct sensor input from Y6472 (Primary sensor) if its quality value 'is Good; else the direct sensor input from Y6 172 (Secondary sensor) is selected.

0 Degrees represents wind direction from the North.Appendix C Page 60 T:\Config\iSpecs\X5ABO5\IPCDOCS\AX5AB05-O0031 (Vol 2)\Chapter_..13.

doc Chapter 13 -Emergency Response Data System (ERDS)Date Reactor Unit Data Feeder NRC ERDS Parameter Point ID Plant Spec. Point Generic/Coad.

Analog/Digital Engr. Units/Dig Engr. Units Minimum Instr.Maximum Instr.Zero Point Reference Point Proc or Sens.Number of Sensors How Processed Sensor Locations Alarm/Trip Setpoints NI Power Cut Off NI Power Turn On Instrument Failure Temp. Comp.Level

Reference:

VO1:N/A:STAB CLASS:T6174:PRIMARY MET TOWER 60-10 METER DELTA TEMP:AIR STABILITY AT REACTOR SITE: A:DEGF:-3.2 TO 20.0, BEGF -10.0 to 20.0 DEGF[:20.0:N/A:N/A: --- P:-N4A-- 2.... -T..I.....A..I

...T....... R"UT SELECTED INPUT -SEE SYSTEM DESCRIPTION S-PRIMARY MET TOWER:NONE:N/A SN/A:N/A: N:N/A Unique System Uses the 60 meter and 10 meter temperature inputs to calculate a delta temperature at the primary meteorological monitoring station. 60-10 meter delta T provides an indication ofatmospheric stability class (Pasquill Category) as follows: Pascluill Category A B C D E F G Stability Class Extremely Unstable Moderately Unstable Slightly Unstable Neutral Slightly Stable Moderately Stable Extremely Stable 60-10 M Delta T DEGF DT <-1.71-1.71 < DT< -1.53-1.53 < DT< -1.35-1.35 < DT < -0.45-0.45 < DT < +1.35+I .35 <DT <+3.60+3.60 <DT Two redundant 60 meter and 10 meter temperature inputs are used to calculate two delta temperature values at the primary meteorological monitoring station. Point T6479 measures the Primary direct sensor input and Point T6179 measures the Secondary (Back-up) direct sensor input. Point T6 174 selects the direct sensor input from T6479 (Primary sensor) if its quality value is Good; else the direct sensor input from T6179 (Secondary sensor) is selected.Appendix C Page 61 AX5AB05-00031 SNC VER. 10.0 1

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