L-11-094, Notification of Changes to Prairie Island Nuclear Generating Plant (PINGP) Emergency Response Data System (ERDS) and PINGP Data Point Library (Dpl)

Notification of Changes to Prairie Island Nuclear Generating Plant (PINGP) Emergency Response Data System (ERDS) and PINGP Data Point Library (Dpl)

ML11335A035
Person / Time
Site:	Prairie Island
Issue date:	11/29/2011
From:	Schimmel M Northern States Power Co, Xcel Energy
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
L-PL-11-094
Download: ML11335A035 (6)

Text

ý& XcelEnergy-NOV 2 9 2011 L-PI-1 1-094 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) Emergqency Response Data System (ERDS) and PINGP Data Point Library (DPL)

In accordance with the requirements of 10CFR 50, Appendix E, Section VI.3.b, Northern States Power Company, a Minnesota corporation, doing business as Xcel Energy (hereafter "NSPM") is submitting this letter to provide notification of changes to the PINGP ERDS link software targeted to be implemented by December 31, 2011.

Notification is required 30 days prior to any hardware or software changes that could affect the transmission format or computer communication protocol to the ERDS.

These changes will involve a conversion from a dial-up modem-based system to a more reliable internet-based system using a plant information server and NRC-supplied Virtual Private Network (VPN) appliance. During implementation of this change, the existing ERDS link will remain available and will not affect the plant's ability to activate the existing ERDS link, if required.

Concurrent with the implementation of the above changes, several data points will be deleted and several new points will be added. Enclosure 1 contains a summary of the DPL changes, along with the DPL for PINGP Unit 1 and Unit 2. This notification satisfies the reporting criteria for 10CFR 50, Appendix E, Section VI.3.a.

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 1717 Wakonade Drive East 9 Welch, Minnesota 55089-9642 Telephone: 651.388.1121

Document Control Desk Page 2 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

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

<1 Prairie Island Nuclear Plant - Unit 2 ERDS Data Point Library 11/28/2011 PROCESS DESCRIPTIONS DEFINITIONS AVG The average of 2 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).

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.

tIyelthe spraheet.!

Change summary: New point column shows the new point we will be using.

Old point column shows the point that will be deleted.

Quality codes sent will be GOOD and BAD. SUSPECT will show up as GOOD.

New Added point Old deleted New description Reason points 2U4143WSSEL 2U4105A MET WIND SPEED 15MAVG SEL Same value we use on our Eplan Displays. Single 2U4106A value replaces A and B met tower. Selected value reduces confusion on which of 5 inputs to use.

2U4143WDSEL 2U4109A MET WIND DIR 15MAVG SEL Same value we use on our Eplan Displays. Single 2U41 1OA value replaces A and B met tower. Selected value reduces confusion on which of 5 inputs to use.

2U4143STSEL 2U4135A MET DELTAT STABILITY 15MAVG Same value we use on our Eplan Displays. Single 2U4136A SEL value replaces A and B met tower. Selected value reduces confusion on which of 2 inputs to use.

2UO780A 2U5032A WR SG A LVL Wide range more appropriate to use during accident conditions than narrow range.

2U0781A 2U5034A WR SG B LVL Wide range more appropriate to use during accident conditions than narrow range.

SERVERID n/a Point deleted. Not required since simulator has different VPN IP address.