L-MT-25-025, Notification of Changes to the Emergency Response Data System (ERDS)

Notification of Changes to the Emergency Response Data System (ERDS)

ML25182A097
Person / Time
Site:	Monticello
Issue date:	07/01/2025
From:	Brown G Northern States Power Company, Minnesota, Xcel Energy
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
L-MT-25-025
Download: ML25182A097 (1)

Text

2807 West County Road 75 Monticello, MN 55362 L-MT-25-025 10 CFR 50 Appendix E July 1, 2025 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 Monticello Nuclear Generating Plant Docket No. 50-263 Subsequent Renewed Facility Operating License No. DPR-22 Notification of Changes to the Emergency Response Data System (ERDS)

Pursuant to 10 CFR 50, Appendix E, Section VI, Northern States Power Company, a Minnesota corporation, doing business as Xcel Energy (hereafter "NSPM"), submits this letter to provide notification of changes to the Monticello Nuclear Generating Plant (MNGP) ERDS link software.

The following Point IDs from the ERDS Data Point Library will no longer be sent:

PRM121FA - STACK EFF RAD A 15MRUN PRM122FA - STACK EFF RAD B 15MRUN PRM123FA - RBV EFFLUENT MONITOR CHA 15 MIN AVG PRM124FA - RBV EFFLUENT MONITOR CHB 15 MIN AVG The following new Point IDs will be sent in place of the Points listed above:

PRM1211A - A OGS TOTAL RELEASE - 1 MIN AVG PRM1221A - B OGS TOTAL RELEASE - 1 MIN AVG PRM1231A - A RBV TOTAL RELEASE - 1 MIN AVG PRM1241A - B RBV TOTAL RELEASE - 1 MIN AVG The new points are 1-minute averages of the same data from the previous points which were 15-minute averages. Enclosure 1 provides the updated ERDS Data Point Library with the new Point IDs listed on Sheet Numbers 23-26.

These changes will be made no sooner than 30-days from date of this submittal.

Please contact Mr. David Gerads at (763) 295-1046 or david.a.gerads@xcelenergy.com if there are any questions or if additional information is needed.

fl Xcel Energy

Document Control Desk L-MT-25-025 Page 2 Summary of Commitments This letter m no new commitments and no revisions to existing commitments.

Gr6gory D.~~~

Plant Manager, Monticello Nuclear Generating Plant Northern States Power Company - Minnesota

• Enclosure cc:

Administrator, Region Ill, USNRC Project Manager, Monticello, USNRC Resident Inspector, Monticello, USNRC

ENCLOSURE 1 MONTICELLO NUCLEAR GENERATING PLANT Notification of Changes to the Emergency Response Data System (ERDS)

ERDS DATA POINT LIBRARY

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No:

1 Prepared By: Gordon Anderson MOC# 600001283430 Revision Date: 06/03/2025 Reviewed By: Tim Tvrdik MOC# 600001283429 Approved By: Janice Schramel MOC# 600001283428 LIST OF PAGES SHEET DESCRIPTION REVISION and DATE 1

LIST OF PAGES Revision 8, 5/12/06 2

NI POWER RANGE Revision 8, 5/12/06 7

NI INTER RANGE Revision 9, 5/06/09 8

NI SOURC RNG Revision 9, 5/06/09 9

REAC VES LEV Revision 9, 5/06/09 10 RCS PRESSURE Revision 9, 5/06/09 11 MAIN FD FLOW Revision 9, 5/06/09 13 HPCI FLOW Revision 9, 5/06/09 14 RCIC FLOW Revision 9, 5/06/09 15 LPCI FLOW Revision 9, 5/06/09 19 CR SPRAY FL Revision 9, 5/06/09 21 DW ED SMP LV Revision 9, 5/06/09 22 DW FD SMP LV Revision 9, 5/06/09 23 EFF GAS Revision 14, 06/03/25 27 EFF LIQ RAD Revision 9, 5/06/09 33 COND A/E RAD Revision 9, 5/06/09 35 DW RAD Revision 9, 5/06/09 37 MN STEAM RAD Revision 11, 4/20/12 41 DW PRESS Revision 9, 5/06/09 42 DW TEMP Revision 9, 5/06/09 43 SP TEMP Revision 9, 5/06/09 44 SP LEVEL Revision 9, 5/06/09 45 H2 CONC Revision 9, 5/06/09 47 O2 CONC Revision 9, 5/06/09 49 CST LEVEL Revision 9, 5/06/09 51 WIND SPEED Revision 10, 3/15/12 55 WIND DIR Revision 10, 3/15/12 59 STAB CLASS Revision 10, 3/15/12 63 Contacts Revision 14, 06/03/25 64 Data Feeder Information Revision 13, 10/08/19

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 2 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

NI POWER RNG Point ID:

C51C4001 Plant Spec Point Desc.:

AVERAGE CONSISTENT APRM READING Generic/Cond Desc.:

NUCLEAR INSTRUMENTS, POWER RANGE Analog/Digital A

Engr Units/Dig States:

Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

125 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

P Number of Sensors:

12 How Processed:

AVERAGE OF CONSISTENT APRMS Sensor Location:

APRM UTILIZE 24 LPRMS LOCATED IN CORE Alarm/Trip Set Points:

HI-HI TRIP=(.58W+62%),W=%RECIRC FLOW NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

DOWNSCALE(3%),INOP,BYPASS Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

This point consists of either an average of all consistent APRMs or an average of in-range APRMs if there are less than the required number of consistent signals.

APRMS(Average Power Range Monitors) consist of an average of 24 LPRMs (Local Power Range Monitors). Each individual APRM signal will fail on Downscale(3%), Inop, or Bypass. HI-HI trip feed RPS SCRAM for one-out-of-three-twice logic. HI trip (.58W+50%) results in Rod Withdraw Block.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 3 DATA POINT LIBRARY REFERENCE FILE Date:

05/06/09 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

NI POWER RNG Point ID:

NUI196 Plant Spec Point Desc.:

APRM #1 Generic/Cond Desc.:

NUCLEAR INSTRUMENTS, POWER RANGE Analog/Digital A

Engr Units/Dig States:

Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

125 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

24 How Processed:

AVERAGE OF 24 LPRMs Sensor Location:

APRM UTILIZE 24 LPRMs LOCATED IN CORE Alarm/Trip Set Points:

Note A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

N/A Level Reference Leg:

N/A Unique System Desc.:

The APRM provides overall power range monitoring, the range monitored is from approximately 3 to 100% power. The reading of APRM is the average of 24 LPRM signals and provides output signal that are proportional to average neutron flux. The output signal is recorded on reactor control console recorder and indicated on the APRM Panel indicator. Trip circuit associated with APRM channel provides trip output signals to the RMCS rod withdrawal block circuits and the RPS scram circuitry.

Note A: Three Alarm/Trip Set Points:

HI-HI TRIP=(.66W+59.6%),W=%RECIRC FLOW UPSCALE TRIP=119.5% (MODE SWITCH IN RUN)

UPSCALE TRIP=18% (MODE SWITCH NOT IN RUN)

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 4 DATA POINT LIBRARY REFERENCE FILE Date:

05/06/09 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

NI POWER RNG Point ID:

NUI197 Plant Spec Point Desc.:

APRM #4 Generic/Cond Desc.:

NUCLEAR INSTRUMENTS, POWER RANGE Analog/Digital A

Engr Units/Dig States:

Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

125 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

24 How Processed:

AVERAGE OF 24 LPRMs Sensor Location:

APRM UTILIZE 24 LPRMs LOCATED IN CORE Alarm/Trip Set Points:

Note A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

N/A Level Reference Leg:

N/A Unique System Desc.:

The APRM provides overall power range monitoring, the range monitored is from approximately 3 to 100% power. The reading of APRM is the average of 24 LPRM signals and provides output signal that are proportional to average neutron flux. The output signal is recorded on reactor control console recorder and indicated on the APRM Panel indicator. Trip circuit associated with APRM channel provides trip output signals to the RMCS rod withdrawal block circuits and the RPS scram circuitry.

Note A: Three Alarm/Trip Set Points:

HI-HI TRIP=(.66W+59.6%),W=%RECIRC FLOW UPSCALE TRIP=119.5% (MODE SWITCH IN RUN)

UPSCALE TRIP=18% (MODE SWITCH NOT IN RUN)

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 5 DATA POINT LIBRARY REFERENCE FILE Date:

05/06/09 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

NI POWER RNG Point ID:

NUI198 Plant Spec Point Desc.:

APRM #2 Generic/Cond Desc.:

NUCLEAR INSTRUMENTS, POWER RANGE Analog/Digital A

Engr Units/Dig States:

Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

125 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

24 How Processed:

AVERAGE OF 24 LPRMs Sensor Location:

APRM UTILIZE 24 LPRMs LOCATED IN CORE Alarm/Trip Set Points:

sNote A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

N/A Level Reference Leg:

N/A Unique System Desc.:

The APRM provides overall power range monitoring, the range monitored is from approximately 3 to 100% power. The reading of APRM is the average of 24 LPRM signals and provides output signal that are proportional to average neutron flux. The output signal is recorded on reactor control console recorder and indicated on the APRM Panel indicator. Trip circuit associated with APRM channel provides trip output signals to the RMCS rod withdrawal block circuits and the RPS scram circuitry.

Note A: Three Alarm/Trip Set Points:

HI-HI TRIP=(.66W+59.6%),W=%RECIRC FLOW UPSCALE TRIP=119.5% (MODE SWITCH IN RUN)

UPSCALE TRIP=18% (MODE SWITCH NOT IN RUN)

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 6 DATA POINT LIBRARY REFERENCE FILE Date:

05/06/09 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

NI POWER RNG Point ID:

NUI200 Plant Spec Point Desc.:

APRM #3 Generic/Cond Desc.:

NUCLEAR INSTRUMENTS, POWER RANGE Analog/Digital A

Engr Units/Dig States:

Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

125 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

24 How Processed:

AVERAGE OF 24 LPRMs Sensor Location:

APRM UTILIZE 24 LPRMs LOCATED IN CORE Alarm/Trip Set Points:

Note A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

N/A Level Reference Leg:

N/A Unique System Desc.:

The APRM provides overall power range monitoring, the range monitored is from approximately 3 to 100% power. The reading of APRM is the average of 24 LPRM signals and provides output signal that are proportional to average neutron flux. The output signal is recorded on reactor control console recorder and indicated on the APRM Panel indicator. Trip circuit associated with APRM channel provides trip output signals to the RMCS rod withdrawal block circuits and the RPS scram circuitry.

Note A: Three Alarm/Trip Set Points:

HI-HI TRIP=(.66W+59.6%),W=%RECIRC FLOW UPSCALE TRIP=119.5% (MODE SWITCH IN RUN)

UPSCALE TRIP=18% (MODE SWITCH NOT IN RUN)

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 7 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

NI INTER RNG Point ID:

Plant Spec Point Desc.:

(not available)

Generic/Cond Desc.:

NUCLEAR INSTRUMENTS, INTERMEDIATE RANGE Analog/Digital Engr Units/Dig States:

Engr Units Conversion:

Minimum Instr Range:

Maximum Instr Range:

Zero Point

Reference:

Reference Point Notes:

PROC or SENS:

Number of Sensors:

How Processed:

Sensor Location:

Alarm/Trip Set Points:

NI Detector Power Supply Cut-off Power Level:

NI Detector Power Supply Turn-on Power Level:

Instrument Failure Mode:

Temperature Compensation For DP Transmitters:

Level Reference Leg:

Unique System Desc.:

Not available to Process Computer System.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 8 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

NI SOURC RNG Point ID:

Plant Spec Point Desc.:

(not available)

Generic/Cond Desc.:

NUCLEAR INSTRUMENTS, SOURCE RANGE Analog/Digital Engr Units/Dig States:

Engr Units Conversion:

Minimum Instr Range:

Maximum Instr Range:

Zero Point

Reference:

Reference Point Notes:

PROC or SENS:

Number of Sensors:

How Processed:

Sensor Location:

Alarm/Trip Set Points:

NI Detector Power Supply Cut-off Power Level:

NI Detector Power Supply Turn-on Power Level:

Instrument Failure Mode:

Temperature Compensation For DP Transmitters:

Level Reference Leg:

Unique System Desc.:

Not available to Process Computer System.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 9 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

REAC VES LEV Point ID:

B21C0010 Plant Spec Point Desc.:

RPV VALIDATED WATER LEVEL Generic/Cond Desc.:

REACTOR VESSEL WATER LEVEL Analog/Digital A

Engr Units/Dig States:

INCHES Engr Units Conversion:

N/A Minimum Instr Range:

-350 Maximum Instr Range:

350 Zero Point

Reference:

MSSKRT Reference Point Notes:

0" CORRESPONDS TO 126" ABOVE TOP OF FUEL PROC or SENS:

P Number of Sensors:

28 How Processed:

WEIGHTED AVERAGE OF CONSISTENT LEVELS Sensor Location:

LEVEL REF LEGS - 5 HOT(IN DW) & 2 COLD Alarm/Trip Set Points:

-48"=ECCS INIT, 9"=SCRAM, 48"=HI TRIP NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

+280" TOP OF REACTOR HEAD Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

WET Unique System Desc.:

This point consists of either a weighted average of all consistent level indicators or an average of in-range level indicators if there are less than the required number of consistent signals. Algorithm performs temperature compensation and evaluates reference leg flashing on 7 level signals. Safeguards Levels (-50" to 50") utilize cold reference leg design outside of drywell. ECCS levels (-335" to 65") are invalidated with recirc pumps running. Other levels include 2 feedwater (0 to 60") and 1 vessel flood (-50" to 350").

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 10 DATA POINT LIBRARY REFERENCE FILE Date:

01/19/93 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

RCS PRESSURE Point ID:

B21C0210 Plant Spec Point Desc.:

RPV VALIDATED PRESSURE Generic/Cond Desc.:

REACTOR COOLANT SYSTEM PRESSURE Analog/Digital A

Engr Units/Dig States:

PSIG Engr Units Conversion:

N/A Minimum Instr Range:

0.00 Maximum Instr Range:

1500 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

P Number of Sensors:

3 How Processed:

WEIGHTED AVERAGE OF CONSISTENT LEVELS Sensor Location:

PRESSURE SENSED OFF LEVEL REF LEGS Alarm/Trip Set Points:

1056 PSIG=SCRAM NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HI/LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

This point consists of either a weighted average of all consistent pressure indicators or an average of in-range pressure level indicators if there are less than the required number of consistent signals.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 11 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

MAIN FD FLOW Point ID:

C51C9001 Plant Spec Point Desc.:

SMOOTHED FEEDWATER FLOW LOOP A Generic/Cond Desc.:

FEEDWATER FLOW INTO THE REACTOR SYSTEM Analog/Digital A

Engr Units/Dig States:

MLB/HR Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

4 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

P Number of Sensors:

4 How Processed:

SMOOTHED FW FLOW CALC FROM A NOZZLE D/P Sensor Location:

FW NOZZLE IS DOWNSTREAM OF RX FW PUMPS Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HI/LOW SENSOR Temperature Compensation N/A For DP Transmitters:

N/A Level Reference Leg:

N/A Unique System Desc.:

SMOOTHED FW FLOW LOOP A is calculated using Feedwater nozzle D/P, Pressure, and temperature. Smoothing algorithm sums 1/12 current sample + 11/12 of previous smoothed value. Sampling frequency is 5 seconds. Feedwater nozzles are located downstream of Reactor Feedwater Pumps and ahead of high pressure heaters.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 12 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

MAIN FD FLOW Point ID:

C51C9002 Plant Spec Point Desc.:

SMOOTHED FEEDWATER FLOW LOOP B Generic/Cond Desc.:

FEEDWATER FLOW INTO THE REACTOR SYSTEM Analog/Digital A

Engr Units/Dig States:

MLB/HR Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

4 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

P Number of Sensors:

4 How Processed:

SMOOTHED FW FLOW CALC FROM B NOZZLE D/P Sensor Location:

FW NOZZLE IS DOWNSTREAM OF RX FW PUMPS Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HI/LOW SENSOR Temperature Compensation N/A For DP Transmitters:

N/A Level Reference Leg:

N/A Unique System Desc.:

SMOOTHED FW FLOW LOOP B is calculated using Feedwater nozzle D/P, Pressure, and temperature. Smoothing algorithm sums 1/12 current sample + 11/12 of previous smoothed value. Sampling frequency is 5 seconds. Feedwater nozzles are located downstream of Reactor Feedwater Pumps and ahead of high pressure heaters.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 13 DATA POINT LIBRARY REFERENCE FILE Date:

01/19/93 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

HPCI FLOW Point ID:

HPC100 Plant Spec Point Desc.:

HPCI PUMP DISCHARGE FLOW Generic/Cond Desc.:

HIGH PRESSURE COOLANT INJECTION FLOW Analog/Digital A

Engr Units/Dig States:

GPM Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

3500 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL INPUT FROM FLOW TRANSMITTER Sensor Location:

FLOW ELEMENT ON HPCI PUMP DISHARGE Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

N/A Level Reference Leg:

N/A Unique System Desc.:

HPCI is a steam turbine driven pump designed to deliver 2700 gpm over reactor pressure range of 150-1120 psig. Flow element is located on pump discharge line ahead of the test return line to the CST tanks and injection line into "B" feedwater line. HPCI injects into feedwater line prior to the line entering containment.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 14 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

RCIC FLOW Point ID:

RCI100 Plant Spec Point Desc.:

RCIC PUMP DISCHARGE FLOW Generic/Cond Desc.:

REACTOR CORE ISOLATION COOLING Analog/Digital A

Engr Units/Dig States:

GPM Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

500 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL INPUT FROM FLOW TRANSMITTER Sensor Location:

FLOW ELEMENT ON RCIC PUMP DISHARGE Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

N/A Level Reference Leg:

N/A Unique System Desc.:

RCIC is a steam turbine driven pump designed to deliver 400 gpm over reactor pressure range of 150-1120 psig. Flow element is located on pump discharge line ahead of the test return line to the CST tanks and injection line into "A" feedwater line. RCIC injects into feedwater line prior to the line entering containment.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 15 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

LPCI FLOW Point ID:

RHR100 Plant Spec Point Desc.:

CONTAINMENT SPRAY/COOLING A LOOP Generic/Cond Desc.:

LOW PRESSURE COOLANT INJECTION FLOW Analog/Digital A

Engr Units/Dig States:

GPM Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

10000 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL INPUT FROM FLOW TRANSMITTER Sensor Location:

DISCHARGE OF RHR HEAT EXCHANGERS Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

N/A Level Reference Leg:

N/A Unique System Desc.:

CONTAINMENT SPRAY/COOLING A LOOP flow is the RHR flow to the A loop drywell spray, torus spray and torus cooling.

Each RHR pump is approximately rated at 4000 gpm depending on system head. Two pumps are located in each loop although flow can be cross tied between A and B loops.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 16 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

LPCI FLOW Point ID:

RHR101 Plant Spec Point Desc.:

CONTAINMENT SPRAY/COOLING B LOOP Generic/Cond Desc.:

LOW PRESSURE COOLANT INJECTION FLOW Analog/Digital A

Engr Units/Dig States:

GPM Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

10000 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL INPUT FROM FLOW TRANSMITTER Sensor Location:

DISCHARGE OF RHR HEAT EXCHANGERS Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

N/A Level Reference Leg:

N/A Unique System Desc.:

CONTAINMENT SPRAY/COOLING B LOOP flow is the RHR flow to the B loop drywell spray, torus spray and torus cooling.

Each RHR pump is approximately rated at 4000 gpm depending on system head. Two pumps are located in each loop although flow can be cross tied between A and B loops.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 17 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

LPCI FLOW Point ID:

RHR102 Plant Spec Point Desc.:

RHR LOOP A INJECT FLOW Generic/Cond Desc.:

LOW PRESSURE COOLANT INJECTION FLOW Analog/Digital A

Engr Units/Dig States:

GPM Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

10000 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL INPUT FROM FLOW TRANSMITTER Sensor Location:

DISCHARGE OF RHR HEAT EXCHANGERS Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

N/A Level Reference Leg:

N/A Unique System Desc.:

RHR LOOP A INJECT FLOW is the RHR flow to the A Recirc Loop, Reactor Head Cooling, Waste Surge Tank, and cross tie to B Loop. Each RHR pump is rated at about 4000 gpm depending on system head. Two pumps are located in each loop although flow can be cross tied between A and B loops.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 18 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

LPCI FLOW Point ID:

RHR103 Plant Spec Point Desc.:

RHR LOOP B INJECT FLOW Generic/Cond Desc.:

LOW PRESSURE COOLANT INJECTION FLOW Analog/Digital A

Engr Units/Dig States:

GPM Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

10000 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL INPUT FROM FLOW TRANSMITTER Sensor Location:

DISCHARGE OF RHR HEAT EXCHANGERS Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

N/A Level Reference Leg:

N/A Unique System Desc.:

RHR LOOP B INJECT FLOW is the RHR flow to the B Recirc Loop and cross tie to A Loop. Each RHR pump is rated at about 4000 gpm depending on system head. Two pumps are located in each loop although flow can be cross tied between A and B loops.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 19 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

CR SPRAY FL Point ID:

CSP100 Plant Spec Point Desc.:

CS LOOP 11 FLOW Generic/Cond Desc.:

Core Spray Cooling System Flow Analog/Digital A

Engr Units/Dig States:

GPM Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

5000 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL INPUT FROM FLOW TRANSMITTER Sensor Location:

ON PUMP DISCHARGE LINE Alarm/Trip Set Points:

NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

The loop A Core Spray system consists of one electric driven pump designed to deliver 3020 gpm against a system head corresponding to a reactor pressure of 130psi above containment pressure. The flow element is located on the pump discharge line just a head of the reactor vessel injection and test return lines.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 20 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

CR SPRAY FL Point ID:

CSP101 Plant Spec Point Desc.:

CS LOOP 12 FLOW Generic/Cond Desc.:

CORE SPRAY COOLING SYSTEM FLOW Analog/Digital A

Engr Units/Dig States:

GPM Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

5000 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL INPUT FROM FLOW TRANSMITTER Sensor Location:

ON PUMP DISCHARGE LINE Alarm/Trip Set Points:

NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

The loop B Core Spray system consists of one electric driven pump designed to deliver 3020 gpm against a system head corresponding to a reactor pressure of 130psi above containment pressure. The flow element is located on the pump discharge line just a head of the reactor vessel injection and test return lines.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 21 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

DW ED SMP LV Point ID:

PCT138 Plant Spec Point Desc.:

DW EQUIP DRAIN SUMP VOL Generic/Cond Desc.:

DRYWELL FLOOR DRAIN SUMP LEVEL Analog/Digital A

Engr Units/Dig States:

GAL Engr Units Conversion:

N/A Minimum Instr Range:

164 Maximum Instr Range:

565 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL INPUT FROM LEVEL TRANSMITTER Sensor Location:

DIRECTLY BELOW RX VESSEL IN DRYWELL Alarm/Trip Set Points:

HI=555 NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

This sump collects liquid effluent from valve stem leak-offs, Rx Recirc Pump and piping maintenance drains, reactor well bulkhead and bellows drains, reactor vessel flange leakoff and Drywell Equipment Drain Sump heat exchanger drain. Two 50 GPM pumps discharge the water to the Waste Collector Tank in the Reactor building. Sump is isolated by Group II Isolation or manually from control room. Sump overflows into Drywell Floor Drain Sump at 1090 Gallons.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 22 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

DW FD SMP LV Point ID:

PCT139 Plant Spec Point Desc.:

DW FLOOR DRAIN SUMP VOL Generic/Cond Desc.:

DRYWELL FLOOR DRAIN SUMP LEVEL Analog/Digital A

Engr Units/Dig States:

GAL Engr Units Conversion:

N/A Minimum Instr Range:

164 Maximum Instr Range:

565 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL INPUT FROM LEVEL TRANSMITTER Sensor Location:

DIRECTLY BELOW RX VESSEL IN DRYWELL Alarm/Trip Set Points:

HI=555 NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

This sump collects liquid effluent from Drywell cooler drains, floor drains, control rod drive leakage and drains, closed cooling water piping drains, and piping and equipment maintenance vents. Two 50 GPM pumps discharge the water to the Floor Drain Collector Tank in the Reactor building.

Sump is isolated by Group II Isolation or manually from control room. Sump overflows into Drywell Equipment Drain Sump at 1090 Gallons.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 23 DATA POINT LIBRARY REFERENCE FILE Date:

06/03/25 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

EFF GAS RAD Point ID:

PRM1211A Plant Spec Point Desc.:

A OGS TOTAL RELEASE - 1 MIN AVG Generic/Cond Desc.:

RADIOACTIVITY OF RELEASED GASES Analog/Digital:

A Engr Units/Dig States:

uCI/S Engr Units Conversion:

N/A Minimum Instr Range:

1 Maximum Instr Range:

1E12 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

P Number of Sensors:

1 How Processed:

1 MIN AVERAGE OF 1 SECOND VALUES Sensor Location:

PROBES IN OGS - OFF GAS STACK, 100M RELEASE Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Raw data is processed and stored once per second, averaged once per minute, and stored in the 1A - 1 Min Avg point variant.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 24 DATA POINT LIBRARY REFERENCE FILE Date:

06/03/25 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

EFF GAS RAD Point ID:

PRM1221A Plant Spec Point Desc.:

B OGS TOTAL RELEASE - 1 MIN AVG Generic/Cond Desc.:

RADIOACTIVITY OF RELEASED GASES Analog/Digital:

A Engr Units/Dig States:

uCI/S Engr Units Conversion:

N/A Minimum Instr Range:

1 Maximum Instr Range:

1E12 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

P Number of Sensors:

1 How Processed:

1 MIN AVERAGE OF 1 SECOND VALUES Sensor Location:

PROBES IN OGS - OFF GAS STACK, 100M RELEASE Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Raw data is processed and stored once per second, averaged once per minute, and stored in the 1A - 1 Min Avg point variant.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 25 DATA POINT LIBRARY REFERENCE FILE Date:

06/03/25 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

EFF GAS RAD Point ID:

PRM1231A Plant Spec Point Desc.:

A RBV TOTAL RELEASE - 1 MIN AVG Generic/Cond Desc.:

RADIOACTIVITY OF RELEASED GASES Analog/Digital:

A Engr Units/Dig States:

uCI/S Engr Units Conversion:

N/A Minimum Instr Range:

1 Maximum Instr Range:

1E12 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

P Number of Sensors:

1 How Processed:

1 MIN AVERAGE OF 1 SECOND VALUES Sensor Location:

PROBES IN RBV - RX BLDG VENT, 43M RELEASE Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Raw data is processed and stored once per second, averaged once per minute, and stored in the 1A - 1 Min Avg point variant.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 26 DATA POINT LIBRARY REFERENCE FILE Date:

06/03/25 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

EFF GAS RAD Point ID:

PRM1241A Plant Spec Point Desc.:

B RBV TOTAL RELEASE - 1 MIN AVG Generic/Cond Desc.:

RADIOACTIVITY OF RELEASED GASES Analog/Digital:

A Engr Units/Dig States:

uCI/S Engr Units Conversion:

N/A Minimum Instr Range:

1 Maximum Instr Range:

1E12 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

P Number of Sensors:

1 How Processed:

1 MIN AVERAGE OF 1 SECOND VALUES Sensor Location:

PROBES IN RBV - RX BLDG VENT, 43M RELEASE Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Raw data is processed and stored once per second, averaged once per minute, and stored in the 1A - 1 Min Avg point variant.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 27 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

EFF LIQ RAD Point ID:

PRM107 Plant Spec Point Desc.:

SERVICE WATER EFFLUENT Generic/Cond Desc.:

RADIOACTIVITY OF RELEASED LIQUIDS Analog/Digital:

A Engr Units/Dig States:

CPS Engr Units Conversion:

uCi/Ml=((PRM107 in CPS)-5)*(4.3E-7)

Minimum Instr Range:

.1 Maximum Instr Range:

10E6 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL INPUT FROM MONITOR Sensor Location:

SAMPLES SW PRIOR TO SW LEAVING RX BLDG Alarm/Trip Set Points:

HI=20; HI-HI=31400 NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

DOWNSCALE & UPSCALE Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Gamma radiation emitted by radioactive materials contained in process liquid are detected by a scintillation detector housed in shielded sampler. Sidestream sample is used from the service water line prior to leaving the Reactor Building. After leaving Reactor Building, line discharges into circ water discharge pipe. Alarm setpoints vary with plant operation as determined by plant chemist.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 28 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

EFF LIQ RAD Point ID:

PRM109 Plant Spec Point Desc.:

RADWASTE EFFLUENT Generic/Cond Desc.:

RADIOACTIVITY OF RELEASED LIQUIDS Analog/Digital:

A Engr Units/Dig States:

CPS Engr Units Conversion:

uCi/Ml=((PRM109 in CPS)-7)*(2.5E-6)

Minimum Instr Range:

.1 Maximum Instr Range:

10E6 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL INPUT FROM MONITOR Sensor Location:

SAMPLED PRIOR TO LEAVING RADWASTE BLDG Alarm/Trip Set Points:

HI=70; HI-HI=10000000 NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

DOWNSCALE & UPSCALE, INOP Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Gamma radiation emitted by radioactive materials contained in process liquid are detected by a scintillation detector housed in shielded sampler. Liquid is sampled prior to leaving the Radwaste Building. After leaving Radwaste Building, line discharges into discharge canal. Although Monticello has permits, Monticello maintains a policy of zero liquid radwaste releases into the river. Alarm setpoints vary with plant operation as determined by plant chemist.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 29 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

EFF LIQ RAD Point ID:

PRM110 Plant Spec Point Desc.:

TB NORMAL WASTE SUMP CH A Generic/Cond Desc.:

RADIOACTIVITY OF RELEASED LIQUIDS Analog/Digital:

A Engr Units/Dig States:

CPM Engr Units Conversion:

uCi/Ml=((PRM110 in CPM)-400)*(3.5E-9)

Minimum Instr Range:

10 Maximum Instr Range:

10E6 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL INPUT FROM MONITOR Sensor Location:

SAMPLED PRIOR TO LEAVING TURBINE BLDG Alarm/Trip Set Points:

HI=4000;HI-HI=3780000 NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

DOWNSCALE & UPSCALE, INOP Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Gamma radiation emitted by radioactive materials contained in process liquid are detected by a scintillation detectors in dry tube in sump. Sampled prior to leaving the Turbine Building.

Alarm setpoints vary with plant operation as determined by plant chemist.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 30 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

EFF LIQ RAD Point ID:

PRM111 Plant Spec Point Desc.:

TB NORMAL WASTE SUMP CH B Generic/Cond Desc.:

RADIOACTIVITY OF RELEASED LIQUIDS Analog/Digital:

A Engr Units/Dig States:

CPM Engr Units Conversion:

uCi/Ml=((PRM111 in CPM)-400)*(3.5E-9)

Minimum Instr Range:

10 Maximum Instr Range:

10E6 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL INPUT FROM MONITOR Sensor Location:

SAMPLED PRIOR TO LEAVING TURBINE BLDG Alarm/Trip Set Points:

HI=4000;HI-HI=3780000 NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

DOWNSCALE & UPSCALE, INOP Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Gamma radiation emitted by radioactive materials contained in process liquid are detected by a scintillation detectors in dry tube in sump. Sampled prior to leaving the Turbine Building.

Alarm setpoints vary with plant operation as determined by plant chemist.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 31 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

EFF LIQ RAD Point ID:

PRM112 Plant Spec Point Desc.:

DISCHARGE CANAL MONITOR A Generic/Cond Desc.:

RADIOACTIVITY OF RELEASED LIQUIDS Analog/Digital:

A Engr Units/Dig States:

CPS Engr Units Conversion:

uCi/Ml=((PRM112 in CPS)-2)*(1.4E-7)

Minimum Instr Range:

.1 Maximum Instr Range:

10E6 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL INPUT FROM MONITOR Sensor Location:

550FT DOWNSTREAM FROM DISCHARGE STRUCTURE Alarm/Trip Set Points:

HI=40; HI-HI=93000 NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

DOWNSCALE & UPSCALE, INOP Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Gamma radiation emitted by radioactive materials contained in process liquid are detected by a scintillation detectors. Sample is drawn from 4 standpipes in canal 550 feet downstream from the discharge structure. Alarm setpoints vary with plant operation as determined by plant chemist.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 32 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

EFF LIQ RAD Point ID:

PRM113 Plant Spec Point Desc.:

DISCHARGE CANAL MONITOR B Generic/Cond Desc.:

RADIOACTIVITY OF RELEASED LIQUIDS Analog/Digital:

A Engr Units/Dig States:

CPS Engr Units Conversion:

uCi/Ml=((PRM113 in CPS)-2)*(1.4E-7)

Minimum Instr Range:

.1 Maximum Instr Range:

10E6 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL INPUT FROM MONITOR Sensor Location:

550FT DOWNSTREAM FROM DISCHARGE STRUCTURE Alarm/Trip Set Points:

HI=40; HI-HI=93000 NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

DOWNSCALE & UPSCALE, INOP Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Gamma radiation emitted by radioactive materials contained in process liquid are detected by a scintillation detectors. Sample is drawn from 4 standpipes in canal 550 feet downstream from the discharge structure. Alarm setpoints vary with plant operation as determined by plant chemist.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 33 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

CND A/E RAD Point ID:

PRM118 Plant Spec Point Desc.:

OFF GAS CH 1 Generic/Cond Desc.:

CONDENSER AIR EJECTOR RADIOACTIVITY Analog/Digital:

A Engr Units/Dig States:

MR/HR Engr Units Conversion:

N/A Minimum Instr Range:

1 Maximum Instr Range:

10E6 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL OUTPUT FROM MONITOR Sensor Location:

SAMPLE DRAWN FROM OFF GAS LINE Alarm/Trip Set Points:

HI=2500; HI-HI=200000 NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

LOW Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

OFF GAS CH 1 radiation monitor is positioned adjacent to a vertical sample chamber. A continuous sample is drawn from the off gas line downstream from the Steam Jet Air Ejectors and ahead of the Recombiner trains. The sample is monitored after a time delay of approximately 2 minutes to permit Nitrogen-16 and Oxygen-19 to decay. Alarm setpoints vary with plant operation as determined by plant chemist.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 34 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

CND A/E RAD Point ID:

PRM119 Plant Spec Point Desc.:

OFF GAS CH 2 Generic/Cond Desc.:

CONDENSER AIR EJECTOR RADIOACTIVITY Analog/Digital:

A Engr Units/Dig States:

MR/HR Engr Units Conversion:

N/A Minimum Instr Range:

1 Maximum Instr Range:

10E6 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL OUTPUT FROM MONITOR Sensor Location:

SAMPLE DOWNSTREAM OF STEAM JET AIR EJECT Alarm/Trip Set Points:

HI=2500; HI-HI=200000 NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

LOW Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

OFF GAS CH 2 radiation monitor is positioned adjacent to a vertical sample chamber. A continuous sample is drawn from the off gas line downstream from the Steam Jet Air Ejectors and ahead of the Recombiner trains. The sample is monitored after a time delay of approximately 2 minutes to permit Nitrogen-16 and Oxygen-19 to decay. Alarm setpoints vary with plant operation as determined by plant chemist.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 35 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

DW RAD Point ID:

PCT109 Plant Spec Point Desc.:

DRYWELL RADIATION CH A Generic/Cond Desc.:

RADIATION LEVEL IN THE DRYWELL Analog/Digital:

A Engr Units/Dig States:

R/HR Engr Units Conversion:

N/A Minimum Instr Range:

1 Maximum Instr Range:

10E8 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL INPUT FROM RADIATION MONITOR Sensor Location:

DRYWELL 180 DEGREE AZIMUTH AT 944' Alarm/Trip Set Points:

HI=49.999, HI-HI=35 NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH SENSOR, INOP Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Purpose is to provide estimate of core damage by measuring drywell gamma radiation fields caused by fission product leakage from the core. Each sensor is an ionization chamber with an internal U-234 source which gives 1R/HR reading for operation verification. Elevation 944' is just below bottom of reactor vessel (949').

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 36 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

DW RAD Point ID:

PCT110 Plant Spec Point Desc.:

DRYWELL RADIATION CH B Generic/Cond Desc.:

RADIATION LEVEL IN THE DRYWELL Analog/Digital:

A Engr Units/Dig States:

R/HR Engr Units Conversion:

N/A Minimum Instr Range:

1 Maximum Instr Range:

10E8 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL INPUT FROM RADIATION MONITOR Sensor Location:

DRYWELL 0 DEGREE AZIMUTH AT 944' Alarm/Trip Set Points:

HI=49.999, HI-HI=35 NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Sply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH SENSOR, INOP Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Purpose is to provide estimate of core damage by measuring drywell gamma radiation fields caused by fission product leakage from the core. Each sensor is an ionization chamber with an internal U-234 source which gives 1R/HR reading for operation verification. Elevation 944' is just below bottom of reactor vessel (949').

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 37 DATA POINT LIBRARY REFERENCE FILE Date:

04/20/12 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

MN STEAM RAD Point ID:

PRM125 Plant Spec Point Desc.:

MAIN STEAM LINE RAD CH A Generic/Cond Desc.:

RADIATION LEVEL OF THE MAIN STEAM LINE Analog/Digital:

A Engr Units/Dig States:

MR/H Engr Units Conversion:

N/A Minimum Instr Range:

1 Maximum Instr Range:

10E6 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL INPUT FROM RM-17-251A Sensor Location:

C10 ADMIN 951' CONTROL ROOM Alarm/Trip Set Points:

NI Detector Power Supply Cut-off Power Level:

NI Detector Power Supply Turn-on Power Level:

Instrument Failure Mode:

Temperature Compensation For DP Transmitters:

Level Reference Leg:

Unique System Desc.:

The Main Steam Line Radiation Monitoring System provides continuous control room indication of the gamma radiation level of the main steam tunnel area lines immediately downstream of the outboard main steam isolation valves.

When the gamma sensitive ion chamber (supplied by General Electric) is exposed to gamma radiation, producing current flow is proportional to the gamma radiation level, and serves as the input signal to the logarithmic radiation monitor. The monitor then provides an output voltage signal proportional to the logarithm of the input current. The output voltage signal of the main steam line monitor is also continuously recorded on the plant process computer point (PRM125).

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 38 DATA POINT LIBRARY REFERENCE FILE Date:

04/20/12 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

MN STEAM RAD Point ID:

PRM126 Plant Spec Point Desc.:

MAIN STEAM LINE RAD CH B Generic/Cond Desc.:

RADIATION LEVEL OF THE MAIN STEAM LINE Analog/Digital:

A Engr Units/Dig States:

MR/H Engr Units Conversion:

N/A Minimum Instr Range:

1 Maximum Instr Range:

10E6 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL INPUT FROM RM-17-251B Sensor Location:

C10 ADMIN 951' CONTROL ROOM Alarm/Trip Set Points:

NI Detector Power Supply Cut-off Power Level:

NI Detector Power Supply Turn-on Power Level:

Instrument Failure Mode:

Temperature Compensation For DP Transmitters:

Level Reference Leg:

Unique System Desc.:

The Main Steam Line Radiation Monitoring System provides continuous control room indication of the gamma radiation level of the main steam tunnel area lines immediately downstream of the outboard main steam isolation valves.

When the gamma sensitive ion chamber (supplied by General Electric) is exposed to gamma radiation, producing current flow is proportional to the gamma radiation level, and serves as the input signal to the logarithmic radiation monitor. The monitor then provides an output voltage signal proportional to the logarithm of the input current. The output voltage signal of the main steam line monitor is also continuously recorded on the plant process computer point (PRM126).

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 39 DATA POINT LIBRARY REFERENCE FILE Date:

04/20/12 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

MN STEAM RAD Point ID:

PRM127 Plant Spec Point Desc.:

MAIN STEAM LINE RAD CH C Generic/Cond Desc.:

RADIATION LEVEL OF THE MAIN STEAM LINE Analog/Digital:

A Engr Units/Dig States:

MR/H Engr Units Conversion:

N/A Minimum Instr Range:

1 Maximum Instr Range:

10E6 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL INPUT FROM RM-17-251C Sensor Location:

C10 ADMIN 951' CONTROL ROOM Alarm/Trip Set Points:

NI Detector Power Supply Cut-off Power Level:

NI Detector Power Supply Turn-on Power Level:

Instrument Failure Mode:

Temperature Compensation For DP Transmitters:

Level Reference Leg:

Unique System Desc.:

The Main Steam Line Radiation Monitoring System provides continuous control room indication of the gamma radiation level of the main steam tunnel area lines immediately downstream of the outboard main steam isolation valves.

When the gamma sensitive ion chamber (supplied by General Electric) is exposed to gamma radiation, producing current flow is proportional to the gamma radiation level, and serves as the input signal to the logarithmic radiation monitor. The monitor then provides an output voltage signal proportional to the logarithm of the input current. The output voltage signal of the main steam line monitor is also continuously recorded on the plant process computer point (PRM127).

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 40 DATA POINT LIBRARY REFERENCE FILE Date:

04/20/12 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

MN STEAM RAD Point ID:

PRM128 Plant Spec Point Desc.:

MAIN STEAM LINE RAD CH D Generic/Cond Desc.:

RADIATION LEVEL OF THE MAIN STEAM LINE Analog/Digital:

A Engr Units/Dig States:

MR/H Engr Units Conversion:

N/A Minimum Instr Range:

1 Maximum Instr Range:

10E6 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL INPUT FROM RM-17-251D Sensor Location:

C10 ADMIN 951' CONTROL ROOM Alarm/Trip Set Points:

NI Detector Power Supply Cut-off Power Level:

NI Detector Power Supply Turn-on Power Level:

Instrument Failure Mode:

Temperature Compensation For DP Transmitters:

Level Reference Leg:

Unique System Desc.:

The Main Steam Line Radiation Monitoring System provides continuous control room indication of the gamma radiation level of the main steam tunnel area lines immediately downstream of the outboard main steam isolation valves.

When the gamma sensitive ion chamber (supplied by General Electric) is exposed to gamma radiation, producing current flow is proportional to the gamma radiation level, and serves as the input signal to the logarithmic radiation monitor. The monitor then provides an output voltage signal proportional to the logarithm of the input current. The output voltage signal of the main steam line monitor is also continuously recorded on the plant process computer point (PRM128).

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 41 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

DW PRESS Point ID:

D23C0010 Plant Spec Point Desc.:

VALIDATED DRYWELL PRESSURE Generic/Cond Desc.:

DRYWELL PRESSURE Analog/Digital:

A Engr Units/Dig States:

PSIG Engr Units Conversion:

N/A Minimum Instr Range:

-5 Maximum Instr Range:

250 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

P Number of Sensors:

4 How Processed:

WEIGHTED AVERAGE OF CONSISTENT DW PRESS Sensor Location:

SENSING LINES FROM DRYWELL Alarm/Trip Set Points:

ALARMS LOW=0.1, HIGH=1.5 NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

This point consists of either a weighted average of all consistent drywell pressure or an average of in-range drywell pressures if there are less than the required number of consistent signals. Four drywell pressure signals consist of one narrow range (-2 to 3), one wide range (0 to 80) and two accident (-5 to 250) ranges. Weighted averages produces average that is weighted based on instrument accuracy.

Drywell internal design pressure is 56 PSIG at 281 Degrees F.

At 2 PSIG, RPS initiates Reactor SCRAM and Primary Containment Isolation initiates Group 2 & 3.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 42 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

DW TEMP Point ID:

D23C0310 Plant Spec Point Desc.:

VALIDATED DRYWELL TEMPERATURE Generic/Cond Desc.:

DRYWELL TEMPERATURE Analog/Digital:

A Engr Units/Dig States:

DEGF Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

600 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

P Number of Sensors:

16 How Processed:

AVERAGE OF CONSISTENT DW TEMPERAURES Sensor Location:

16 SENSORS AT 8 DRYWELL LOCATIONS Alarm/Trip Set Points:

HI=150 DEGF NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

This point consists of either a weighted average bulk temperature of consistent regional temperatures or an unvalidated, non-weighted average of all in-range drywell temperatures. Regional weighting factors compensate for differences in drywell volume at the various elevations. Each location utilizes two sensors and are located in Drywell at: Elev 932' (East & West), Elev 951'(North & South), Elev 970' (East

& West), and Elev 994' (North & South).

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 43 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

SP TEMP Point ID:

D23C0210 Plant Spec Point Desc.:

VALIDATED TORUS TEMPERATURE Generic/Cond Desc.:

SUPPRESSION POOL TEMPERATURE Analog/Digital:

A Engr Units/Dig States:

DEGF Engr Units Conversion:

N/A Minimum Instr Range:

30 Maximum Instr Range:

240 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

P Number of Sensors:

16 How Processed:

AVERAGE OF 2 SPOTMOS (8 SENSORS EACH)

Sensor Location:

2 SENSORS IN EACH OF 8 TORUS SRV BAYS Alarm/Trip Set Points:

HIGH=90 NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR, SPOTMOS INOP Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

VALIDATED TORUS TEMPERATURE is the average of the inputs from two Suppression Pool Temperature Monitoring Systems (SPOTMOS). Each system generates an average of eight sensors. Each sensor is located in one of the eight bays that Safety Relief Valves discharge into.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 44 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

SP LEVEL Point ID:

G43C0015 Plant Spec Point Desc.:

VALIDATED TORUS WATER LEVEL Generic/Cond Desc.:

SUPPRESSION POOL WATER LEVEL Analog/Digital:

A Engr Units/Dig States:

INCHES Engr Units Conversion:

N/A Minimum Instr Range:

-96 Maximum Instr Range:

180 Zero Point

Reference:

N/A Reference Point Notes:

0"=ELEVATION 910'= 530,000 GALLONS PROC or SENS:

P Number of Sensors:

4 How Processed:

WEIGHTED AVERAGE OF CONSISTENT LEVELS Sensor Location:

LEVEL TAPS OFF TORUS SHELL Alarm/Trip Set Points:

HIGH=2, LO=-2 NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

This point consists of either a weighted average of all consistent torus water levels or an average of in-range torus water levels if there are less than the required number of consistent signals. Four torus water level signals consist of two narrow range (-15 to 15) and two wide range (-96 to 180).

Weighted averages produce an average that is based on instrument accuracy. HPCI suction transfer occurs at 2". Tech Specs level greater than -4" and less than 2.9".

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 45 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

H2 CONC Point ID:

PCT116 Plant Spec Point Desc.:

PCTMT H2 ANALYZER A Generic/Cond Desc.:

DRYWELL OR TORUS HYDROGEN CONCENTRATION Analog/Digital:

A Engr Units/Dig States:

Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

20 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL OUTPUT FROM H2 ANALYZER Sensor Location:

SAMPLE LINES UPPER DW,TORUS,CGCS IN & OUT Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR, SYSTEM OFF Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Analyzers are normally shutdown and values will usually read less than 0.75%. System is capable of analyzing samples from Drywell (elev 994'), Torus and Combustible Gas Control System inlet and outlet. Sample line and sample return valves close on Group 2 Isolation.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 46 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

H2 CONC Point ID:

PCT117 Plant Spec Point Desc.:

PCTMT H2 ANALYZER B Generic/Cond Desc.:

DRYWELL OR TORUS HYDROGEN CONCENTRATION Analog/Digital:

A Engr Units/Dig States:

Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

20 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL OUTPUT FROM H2 ANALYZER Sensor Location:

SAMPLE LINES UPPER DW,TORUS,CGCS IN & OUT Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR, SYSTEM OFF Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Analyzers are normally shutdown and values will usually read less than 0.75%. System is capable of analyzing samples from Drywell (elev 994'), Torus and Combustible Gas Control System inlet and outlet. Sample line and sample return valves close on Group 2 Isolation.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 47 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

O2 CONC Point ID:

PCT118 Plant Spec Point Desc.:

PCTMT O2 ANALYZER A Generic/Cond Desc.:

DRYWELL OR TORUS OXYGEN CONCENTRATION Analog/Digital:

A Engr Units/Dig States:

Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

25 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL OUTPUT FROM O2 ANALYZER Sensor Location:

SAMPLE LINES UPPER DW,TORUS,CGCS IN & OUT Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR, SYSTEM OFF Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Analyzers are normally shutdown and values will usually read less than 0.75%. System is capable of analyzing samples from Drywell (elev 994'), Torus and Combustible Gas Control System inlet and outlet. Sample line and sample return valves close on Group 2 Isolation. Normal operation concentrations are 2.4%.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 48 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

O2 CONC Point ID:

PCT119 Plant Spec Point Desc.:

PCTMT O2 ANALYZER B Generic/Cond Desc.:

DRYWELL OR TORUS OXYGEN CONCENTRATION Analog/Digital:

A Engr Units/Dig States:

Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

25 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL OUTPUT FROM O2 ANALYZER Sensor Location:

SAMPLE LINES UPPER DW,TORUS,CGCS IN & OUT Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR, SYSTEM OFF Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Analyzers are normally shutdown and values will usually read less than 0.75%. System is capable of analyzing samples from Drywell (elev 994'), Torus and Combustible Gas Control System inlet and outlet. Sample line and sample return valves close on Group 2 Isolation. Normal operation concentrations are 2.4%.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 49 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

CST LEVEL Point ID:

CST100 Plant Spec Point Desc.:

CST TANK LEVEL A Generic/Cond Desc.:

CONDENSATE STORAGE TANK LEVEL Analog/Digital:

A Engr Units/Dig States:

FEET Engr Units Conversion:

N/A Minimum Instr Range:

5 Maximum Instr Range:

30 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL FROM LEVEL TRANSMITTER Sensor Location:

LEVEL TX ON WATER COLUMN IN RX BLDG Alarm/Trip Set Points:

HI=24'(225,600gal) LO=11.5'(108,100gal)

NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

LOW Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Condensate Storage Tank (CST) Level A is the water level in the A CST. Two CSTs exist with a tank capacity of 230,000 gallons each. Makeup condensate water is provided through 3 electric pumps from the CST tanks to various plant systems.

Each tank has suction line for Control Rod Drive, HPCI, Core Spray, RHR, and RCIC systems. At 7'(65,800gal) receive CST Low-Low Level alarm and condensate service pumps trip.

At 2'8(25,100gal) HPCI and RCIC transfer to Torus suction.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 50 DATA POINT LIBRARY REFERENCE FILE Date:

01/07/92 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

CST LEVEL Point ID:

CST101 Plant Spec Point Desc.:

CST TANK LEVEL B Generic/Cond Desc.:

CONDENSATE STORAGE TANK LEVEL Analog/Digital:

A Engr Units/Dig States:

FEET Engr Units Conversion:

N/A Minimum Instr Range:

5 Maximum Instr Range:

30 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

S Number of Sensors:

1 How Processed:

SIGNAL FROM LEVEL TRANSMITTER Sensor Location:

LEVEL TX ON WATER COLUMN IN RX BLDG Alarm/Trip Set Points:

HI=24'(225,600gal) LO=11.5'(108,100gal)

NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

LOW Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Condensate Storage Tank (CST) Level B is the water level in the B CST. Two CSTs exist with a tank capacity of 230,000 gallons each. Makeup condensate water is provided through 3 electric pumps from the CST tanks to various plant systems.

Each tank has suction line for Control Rod Drive, HPCI, Core Spray, RHR, and RCIC systems. At 7'(65,800gal) receive CST Low-Low Level alarm and condensate service pumps trip.

At 2'8(25,100gal) HPCI and RCIC transfer to Torus suction.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 51 DATA POINT LIBRARY REFERENCE FILE Date:

3/15/12 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

WIND SPEED Point ID:

MET122FR Plant Spec Point Desc.:

MT 43M A WIND SPEED 15MRUN Generic/Cond Desc.:

WIND SPEED AT THE REACTOR SITE Analog/Digital:

A Engr Units/Dig States:

MPH Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

100.00 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

P Number of Sensors:

1 How Processed:

15 MINUTE AVERAGE OF 5 SECOND VALUES Sensor Location:

PRIMARY MET TOWER AT 43 METER HEIGHT Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Data is collected every five seconds, averaged every minute, and stored in data files as 15-minute average.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 52 DATA POINT LIBRARY REFERENCE FILE Date:

3/15/12 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

WIND SPEED Point ID:

MET123FR Plant Spec Point Desc.:

MT 43M B WIND SPEED 15MRUN Generic/Cond Desc.:

WIND SPEED AT THE REACTOR SITE Analog/Digital:

A Engr Units/Dig States:

MPH Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

100.00 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

P Number of Sensors:

1 How Processed:

15 MINUTE AVERAGE OF 5 SECOND VALUES Sensor Location:

PRIMARY MET TOWER AT 43 METER HEIGHT Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Data is collected every five seconds, averaged every minute, and stored in data files as 15-minute average.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 53 DATA POINT LIBRARY REFERENCE FILE Date:

3/15/12 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

WIND SPEED Point ID:

MET120FR Plant Spec Point Desc.:

MT 100M A WIND SPEED 15MRUN Generic/Cond Desc.:

WIND SPEED AT THE REACTOR SITE Analog/Digital:

A Engr Units/Dig States:

MPH Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

100.00 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

P Number of Sensors:

1 How Processed:

15 MINUTE AVERAGE OF 5 SECOND VALUES Sensor Location:

PRIMARY MET TOWER AT 100 METER HEIGHT Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Data is collected every five seconds, averaged every minute, and stored in data files as 15-minute average.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 54 DATA POINT LIBRARY REFERENCE FILE Date:

3/15/12 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

WIND SPEED Point ID:

MET121FR Plant Spec Point Desc.:

MT 100M B WIND SPEED 15MRUN Generic/Cond Desc.:

WIND SPEED AT THE REACTOR SITE Analog/Digital:

A Engr Units/Dig States:

MPH Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

100.00 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

P Number of Sensors:

1 How Processed:

15 MINUTE AVERAGE OF 5 SECOND VALUES Sensor Location:

PRIMARY MET TOWER AT 100 METER HEIGHT Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg: N/A Unique System Desc.:

Data is collected every five seconds, averaged every minute, and stored in data files as 15-minute average.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 55 DATA POINT LIBRARY REFERENCE FILE Date:

3/15/12 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

WIND DIR Point ID:

MET128FR Plant Spec Point Desc.:

MT 43M A WIND DIR 15MRUN Generic/Cond Desc.:

WIND DIRECTION AT THE REACTOR SITE Analog/Digital:

A Engr Units/Dig States:

DEGFR Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

540.00 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

P Number of Sensors:

1 How Processed:

15 MINUTE AVERAGE OF 5 SECOND VALUES Sensor Location:

PRIMARY MET TOWER AT 43 METER HEIGHT Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Data is collected every five seconds, averaged every minute, and stored in data files as 15-minute average.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 56 DATA POINT LIBRARY REFERENCE FILE Date:

3/15/12 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

WIND DIR Point ID:

MET129FR Plant Spec Point Desc.:

MT 43M B WIND DIR 15MRUN Generic/Cond Desc.:

WIND DIRECTION AT THE REACTOR SITE Analog/Digital:

A Engr Units/Dig States:

DEGFR Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

540.00 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

P Number of Sensors:

1 How Processed:

15 MINUTE AVERAGE OF 5 SECOND VALUES Sensor Location:

PRIMARY MET TOWER AT 43 METER HEIGHT Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Data is collected every five seconds, averaged every minute, and stored in data files as 15-minute average.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 57 DATA POINT LIBRARY REFERENCE FILE Date:

3/15/12 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

WIND DIR Point ID:

MET126FR Plant Spec Point Desc.:

MT 100M A WIND DIR 15MRUN Generic/Cond Desc.:

WIND DIRECTION AT THE REACTOR SITE Analog/Digital:

A Engr Units/Dig States:

DEGFR Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

540.00 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

P Number of Sensors:

1 How Processed:

15 MINUTE AVERAGE OF 5 SECOND VALUES Sensor Location:

PRIMARY MET TOWER AT 100 METER HEIGHT Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Data is collected every five seconds, averaged every minute, and stored in data files as 15-minute average.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 58 DATA POINT LIBRARY REFERENCE FILE Date:

3/15/12 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

WIND DIR Point ID:

MET127FR Plant Spec Point Desc.:

MT 100M B WIND DIR 15MRUN Generic/Cond Desc.:

WIND DIRECTION AT THE REACTOR SITE Analog/Digital:

A Engr Units/Dig States:

DEGFR Engr Units Conversion:

N/A Minimum Instr Range:

0 Maximum Instr Range:

540.00 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

P Number of Sensors:

1 How Processed:

15 MINUTE AVERAGE OF 5 SECOND VALUES Sensor Location:

PRIMARY MET TOWER AT 100 METER HEIGHT Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Data is collected every five seconds, averaged every minute, and stored in data files as 15-minute average.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 59 DATA POINT LIBRARY REFERENCE FILE Date:

3/15/12 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

STAB CLASS Point ID:

MET140FR Plant Spec Point Desc.:

MT 43M-10M A DELTA AIR T 15MRUN Generic/Cond Desc.:

AIR STABILITY AT THE REACTOR SITE Analog/Digital:

A Engr Units/Dig States:

DEGF Engr Units Conversion:

N/A Minimum Instr Range:

-9.0 Maximum Instr Range:

9.0 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

PROC Number of Sensors:

2 How Processed:

AVERAGED DIFFERENTIAL Sensor Location:

PRIMARY MET AT 10 & 43 METER HEIGHT Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Data is collected every five seconds, averaged every minute, and stored in data files as 15-minute average. This value represents the difference in temperature in degF/100ft.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 60 DATA POINT LIBRARY REFERENCE FILE Date:

3/15/12 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

STAB CLASS Point ID:

MET141FR Plant Spec Point Desc.:

MT 43M-10M B DELTA AIR T 15MRUN Generic/Cond Desc.:

AIR STABILITY AT THE REACTOR SITE Analog/Digital:

A Engr Units/Dig States:

DEGF Engr Units Conversion:

N/A Minimum Instr Range:

-9.0 Maximum Instr Range:

9.0 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

PROC Number of Sensors:

2 How Processed:

AVERAGED DIFFERENTIAL Sensor Location:

PRIMARY MET AT 10 & 43 METER HEIGHT Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Data is collected every five seconds, averaged every minute, and stored in data files as 15-minute average. This value represents the difference in temperature in degF/100ft.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 61 DATA POINT LIBRARY REFERENCE FILE Date:

3/15/12 Reactor Unit:

1 Data Feeder:

S NRC ERDS Parameter:

AB CLASS Point ID:

MET138FR Plant Spec Point Desc.:

MT 100M-10M A DELTA AIR T 15MRUN Generic/Cond Desc.:

AIR STABILITY AT THE REACTOR SITE Analog/Digital:

A Engr Units/Dig States:

DEGF Engr Units Conversion:

N/A Minimum Instr Range:

-9.0 Maximum Instr Range:

9.0 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

PROC Number of Sensors:

2 How Processed:

AVERAGED DIFFERENTIAL Sensor Location:

PRIMARY MET AT 10 & 100 METER HEIGHT Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Data is collected every five seconds, averaged every minute, and stored in data files as 15-minute average. This value represents the difference in temperature in degF/100ft.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 62 DATA POINT LIBRARY REFERENCE FILE Date:

3/15/12 Reactor Unit:

MO1 Data Feeder:

PCS NRC ERDS Parameter:

STAB CLASS Point ID:

MET139FR Plant Spec Point Desc.:

MT 100M-10M B DELTA AIR T 15MRUN Generic/Cond Desc.:

AIR STABILITY AT THE REACTOR SITE Analog/Digital:

A Engr Units/Dig States:

DEGF Engr Units Conversion:

N/A Minimum Instr Range:

-9.0 Maximum Instr Range:

9.0 Zero Point

Reference:

N/A Reference Point Notes:

N/A PROC or SENS:

PROC Number of Sensors:

2 How Processed:

AVERAGED DIFFERENTIAL Sensor Location:

PRIMARY MET AT 10 & 100 METER HEIGHT Alarm/Trip Set Points:

N/A NI Detector Power Supply N/A Cut-off Power Level:

NI Detector Power Supply N/A Turn-on Power Level:

Instrument Failure Mode:

HIGH & LOW SENSOR Temperature Compensation N/A For DP Transmitters:

Level Reference Leg:

N/A Unique System Desc.:

Data is collected every five seconds, averaged every minute, and stored in data files as 15-minute average. This value represents the difference in temperature in degF/100ft.

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 63 Contacts Note: Please provide name, title, mailing address and phone number.

A.

Survey Coordinator (i.e. contact for later clarification of questionnaire answers):

Janice Schramel IT Manager, Xcel Energy, Inc.

Monticello Nuclear Generating Plant 2807 West County Road 75 Monticello, MN 55362 (763) 295-1067 B.

Systems Software Specialist(s):

Easthouse, Jeff D.

Engineer Xcel Energy, Inc.

Monticello Nuclear Generating Plant 2807 West County Road 75 Monticello, MN 55362 (763) 271-5863 C.

Application-level Software Specialist(s):

Gordon Anderson Sr. Engineer Xcel Energy, Inc.

Monticello Nuclear Generating Plant 2807 West County Road 75 Monticello, MN 55362 (763) 271-5178 Tim Tvrdik Engineer Xcel Energy, Inc.

Monticello Nuclear Generating Plant 2807 West County Road 75 Monticello, MN 55362 (763) 271-5180

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 64

1. GENERAL DESCRIPTION 1.1. Describe the product perspective (dependencies, interfaces, memory constraints.)

The Public Server System (PSS) executing the R*TIME ERDS interface is the vendor software (R*Time) developed by Curtiss-Wright Nuclear for use in the Nuclear Industry to send data from Plant Process Computers to an NRC provided VPN appliance. The windows based PSS to NRC interface passes selected process data (temperatures, radiation levels, MET data, etc.) from Plant Process Computers to the NRC during emergency events classified as an "Alert" of higher thru a VPN network connection.

The two primary sources for R*Time ERDS data is from the PSS and the Simulator servers (i.e. in support of EP drills). The plant process data will be acquired from the active PSS Server (CP-SVR-PSSM or CP-SVR-PSSL), while the simulator process data will be acquired from the active Simulator Server (CP-SVR-SHEMP or CP-SVR-CURLY). This data transfer functionality is achieved by running two separate and independent instances of the R*Time ERDS to NRC interface, one configured to transfer plant process data from the active PSS Server (CP-SVR-PSSM or CP-SVR-PSSL), and the other configured to transfer simulator process data from active Simulator Server (CP-SVR-SHEMP or CP-SVR-CURLY).

Production Servers reside on Subnet: 172.27.75.0/25 CP-SVR-PSSM IP Address = 172.27.75.34 CP-SVR-PSSL IP Address = 172.27.75.35 Simulator Servers reside on Subnet: 172.27.54.0/26 CP-SVR-CURLY IP Address = 172.27.54.14 CP-SVR-SHEMP IP Address = 172.27.54.7 A Plant Process Computer System (PPCS) ERDS Display will be used to initiate/terminate data transfer to the NRC, display the current status of the NRC connection, number of NRC messages send, and display the current value/status of the process data being transferred to the NRC. Only users with allowed access will have the capability of initiating/terminating process data transfer to the NRC. All other users will only be capable of displaying the value/status of the process data being sent to the NRC.

1.2. Summarize the major functions.

The ERDS R*Time to NRC interface implements the data link from a R*Time Server to the NRC and supports the NRC-317 communications format (as was used for the prior modem communication) using a VPN connection. Both instances of the ERDS R*Time

Northern States Power Company Monticello Nuclear Generating Plant Software Requirement Specification

Title:

Number:

SRS Plant Process Computer System - Emergency Response Data System (ERDS) - Data Point Library SRS-MT-PPCS-ERDS-DPL-014 Sheet No: 65 to NRC interface will be configured to execute as a windows service and thus will be able to startup automatically during a system reboot.

A PPCS ERDS Display will be used to initiate/terminate data transfer to the NRC, display the current status of the NRC connection, number of NRC messages send, and display the current value/status of the process data being transferred to the NRC.

1.3. Describe the users (technical expertise and physical location.)

The ERDS R*Time to NRC interface operates as a windows service and will not communicate directly to end users. Qualified IT personnel will be able to setup the required ERDS R*Time interface parameters needed to support the data transfer capability to the NRC.

The PPCS ERDS Display will contain two command buttons that can be used by trained end users who are given access to initiate or terminate process data transfers to the NRC.

1.4. Describe any constraints that restrict the scope (regulatory processes, budgetary, etc.)

ERDS is required to be operational and able to be activated within one hour of a declaration of an ALERT or higher emergency classification level per 10CFR50 Appendix E, Section VI. Therefore, the design function of the ERDS data transfer is to be activated from an "ERDS Enabled" PPCS ERDS Display within one hour of a declaration of an ALERT or higher emergency classification level and initiate transfer of ERDS process data to the NRC.