L-PI-12-006, Notification of Changes to the Emergency Response Data System (ERDS) Data Point Library (Dpl)

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

ML12030A091
Person / Time
Site:	Prairie Island
Issue date:	01/26/2012
From:	Schimmel M Northern States Power Co, Xcel Energy
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
L-PI-12-006
Download: ML12030A091 (6)

Text

ý& XcelEnergy-JAN 2 6 2012 L-PI-12-006 10 CFR 50, Appendix E U S Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Prairie Island Nuclear Generating Plant Units 1 and 2 Dockets 50-282 and 50-306 Renewed License Nos. DPR-42 and DPR-60 Notification of Changes to Prairie Island Nuclear Generating Plant (PINGP) Emergency Response Data System (ERDS) Data Point Library (DPL)

In accordance with the requirements of 10CFR 50, Appendix E, Section VI.3.a, Northern States Power Company, a Minnesota corporation, doing business as Xcel Energy (hereafter "NSPM") is submitting a change to the ERDS DPL for the Prairie Island Nuclear Generating Plant, Units 1 and 2.

A summary of the change is included on page 1 of the enclosure for Unit 1, and page 3 for Unit 2.

Summary of Commitments This letter contains no new commitments and no revisions to existing commitments.

Mark A. Schimmel Site Vice President, Prairie Island Nuclear Generating Plant Northern States Power Company - Minnesota Enclosures (1) cc: Administrator, Region Ill, USNRC NRR Project Manager, USNRC Resident Inspector, USNRC, PINGP Bezakulu Alemu, USNRC ERDS Project Manager Steve Sage, ERDS System Engineer 1717 Wakonade Drive East

• Welch, Minnesota 55089-9642 Telephone: 651.388.1121

ENCLOSUREI Prairie Island Nuclear Generating Plant Unit 1 and Unit 2 Emergency Response Data System (ERDS) Data Point Library 4 pages follow

Prairie Island Nuclear Plant - Unit 1 ERDS Data Point Library 1/23/2012 PROCESS DESCRIPTIONS DEFINITIONS AVG The average of 2 or more values with rejection of bad quality inputs.

CV-AVG The average of 3 or more values with Chauvenet rejection of out of range or bad inputs.

MAVG15 The 15 minute moving average over time of a single value.

SUM The sum of 2 or more inputs DIFF The Difference of 2 inputs QV Quality validation of a single value. ( i.e. Range checking applied).

STABFUNC Atmospheric Stability function of (60 Meter - 10 meter temperature)

MAX Maximum value of 2 or more inputs.

OR Logical OR of 2 or more digital inputs ABBREVIATIONS WR WIDE RANGE SENSORS NR NARROW RANGE SENSORS FR FULL RANGE SENSORS BWST / RWST REFUELING WATER STORAGE TANK CNTMT CONTAINMENT COND CONDENSER DIR DIRECTION HP/LP HIGH / LOW PRESSURE LVL LEVEL MU REACTOR MAKEUP N/A NOT APPLICABLE P/S "Process or Sensor" column heading NIS / NI NUCLEAR INSTRUMENTATION SYSTEM PRZR PRESSURIZER RAD RADIATION RCS REACTOR COOLANT SYSTEM RNG RANGE SAS SAFETY ASSESSMENT SYSTEM (SPDS)

SG STEAM GENERATOR SI SAFETY INJECTION STM STEAM TIC or TC THERMOCOUPLE Other Notes

1) The "Generic Description" field is the same as the ERCS point description for all points in this document.

2) The "Analog / Digital" field is omitted because all points in this document are analogs (except Y1057D).

3) There are no trip setpoints, but we have provided high and low alarm limits if any.

4) Changes to the previous (11/21/2011) DPL in yellow on the spreadsheet.

Change summary:

Point changed Point Description Reason 1U5013A SAS CNTMT TEMP AVG The calculation method was changed from Chauvenet average of 3 sensors to a simple average with rejection of bad/out-of-range inputs at 30 degrees F deviation from the mean.

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Prairie Island Nuclear Plant - Unit 2 ERDS Data Point Library 1/23/2012 PROCESS DESCRIPTIONS DEFINITIONS AVG The average of 2 or more values with rejection of bad quality inputs.

CV-AVG The average of 3 or more values with Chauvenet rejection of out of range or bad inputs.

MAVG 15 The 15 minute moving average over time of a single value.

SUM The sum of 2 or more inputs DIFF The Difference of 2 inputs QV Quality validation of a single value. ( i.e. Range checking applied).

STAB_FUNC Atmospheric Stability function of (60 Meter - 10 meter temperature)

MAX Maximum value of 2 or more inputs.

OR Logical OR of 2 or more digital inputs ABBREVIATIONS WR WIDE RANGE SENSORS NR NARROW RANGE SENSORS FR FULL RANGE SENSORS BWST / RWST REFUELING WATER STORAGE TANK CNTMT CONTAINMENT COND CONDENSER DIR DIRECTION HP/LP HIGH / LOW PRESSURE LVL LEVEL MU REACTOR MAKEUP N/A NOT APPLICABLE P/S "Process or Sensor" column heading NIS / NI NUCLEAR INSTRUMENTATION SYSTEM PRZR PRESSURIZER RAD RADIATION RCS REACTOR COOLANT SYSTEM RNG RANGE SAS SAFETY ASSESSMENT SYSTEM (SPDS)

SG STEAM GENERATOR SI SAFETY INJECTION STM STEAM T/C or TC THERMOCOUPLE Other Notes

1) The "Generic Description" field is the same as the ERCS point description for all points in this document.

2) The "Analog / Digital" field is omitted because all points in this document are analogs (except Y1057D).

3) There are no trip setpoints, but we have provided high and low alarm limits if any.

4) Changes to the previous (111/21/2011) DPL in yellow on the spreadsheet.

Change summary:

Point changed Point Description Reason 2U5013A SAS CNTMT TEMP AVG The calculation method was changed from Chauvenet average of 3 sensors to a simple average with rejection of bad/out-of-range inputs at 30 degrees F deviation from the mean.

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