L-2011-033, Emergency Response Data Point Library (Dpl) Changes/New ERDS Link
| ML110350058 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 01/27/2011 |
| From: | Katzman E Florida Power & Light Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| L-2011-033 | |
| Download: ML110350058 (5) | |
Text
Florida Power & Light Company, 6501 S. Ocean Drive, Jensen Beach, FL 34957 January 27, 2011 FPL L-2011-033 10 CFR 50. Appendix E U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 RE:
St. Lucie Units 1 and 2 Docket Nos. 50-335 and 50-389 Emergency Response Data Point Library (DPL) Changes/New ERDS Link This letter is being submitted pursuant to the requirements of I0CFR50, Appendix E, VI, 3.a, "Maintaining the Emergency Response Data System" for St. Lucie Unit 2 due to minor changes to two ERDS data points in how they are calculated by the new ERDADS.
These changes are summarized on page 2 of Attachment 1 with the affected Data Point Library (DPL) pages on pages 3 and 4. No other DPL points are affected by this change and all originally submitted ERDS points remain.
This information is being provided for compliance with IOCFR50, Appendix E, VI, 3.a, which requires notification within 30 days after the changes are made for any software or hardware changes to any transmitted data points identified in the Data Point Library. These new point calculations will be in effect following the installation of the new ERDADS on Unit 2 during the current plant outage, currently scheduled for completion in mid-March, 2011.
Additionally, as a follow up to Letter L-2010-047 of March 4, 2010, all future ERDS data transmissions from both St Lucie Units will be exclusively via a Wide Area Network PI system or equivalent) following the installation of the new ERDADS on Unit 2 during the current plant outage, currently scheduled for completion in mid-March, 2011.
Sincerely, Eric S. Katzman Licensing Manager St. Lucie Plant Attachment an FPL Group company
St. Lucie Units 1 and 2 Docket Nos. 50-335 and 50-3 89 L-2011-033 Attachment Page 1 of4 ATTACHMENT I St Lucie Unit 2 ERDS Data Point Library Updates SL2
St. Lucie Units I and 2 Docket Nos. 50-335 and 50-389 L-2011-033 Attachment Page 2 of 4 Page NRC ERDS Original Plant Revised Plant Summary of Revision Parameter Description Description 5
Temp Core Ex Average Core Max Rep CET Matches the QSPDS Exit Temperature Temperature calculation and is more conservative.
6 Sub Margin RCS Low Temp Minimum CET Matches the QSPDS Subcooling Subcooling calculation and is more Margin Margin conservative.
St. Lucie Units I and 2 Docket Nos. 50-335 and 50-389 L-2011-033 Attachment Page 3 of 4 SL2 DATA POINT LIBRARY REFERENCE FILE Page 5 of 47 D ate:.........................................
Reactor Unit:...............................
Data Feeder:................................
NRC ERDS Parameter:...................
Point ID :....................................
Plant Spec Point Desc:....................
Generic/Cond Desc:.......................
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 Locations:..........................
Alarm/Trip Set Points:....................
NI Detector Power Supply:..............
NI Detector Power Supply:...............
Instrument Failure Mode:................
Temperature Comp-DP Xmitters:.......
Level Reference Leg:.....................
Unique System Desc:.....................
01/10/11 SL2 N/A TEMP CORE EX QA0003-2 MAX REP CET TEMPERATURE Highest Rep CET temperature at the core exit A
Deg F N/A 32 2300 N/A N/A P
45 Max Representative Value with Quality Reactor Internals Variable N/A N/A N/A N/A R3 IR3 IR3 This parameter is derived from a total of 45 CET detectors (located just above the upper fuel alignment plate) that make up 2 independent channels. Each Qualified Safety Parameter Display System (QSPDS) channel provides a Representative CET value.
The highest of the two channels is provided here if both values are of GOOD or POOR quality status. If either channel's value is Bad or OFF-SCAN, then the other channel's GOOD or POOR value is selected. If both channels are any combination of BAD/OFF-SCAN, then the value presented is the Last Good Value obtained and would be represented as BAD quality.
R3
St. Lucie Units 1 and 2 Docket Nos. 50-335 and 50-389 L-201 1-033 Attachment Page 4 of 4 SL2 DATA POINT LIBRARY REFERENCE FILE Page 6 of 47 D ate:.........................................
Reactor Unit:...............................
Data Feeder:................................
NRC ERDS Parameter:...................
Point ID:....................................
Plant Spec Point Desc:....................
Generic/Cond Desc:.......................
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 Locations:..........................
Alarm/Trip Set Points:....................
NI Detector Power Supply:..............
NI Detector Power Supply:...............
Instrument Failure Mode:................
Temperature Comp-DP Xmitters:.......
Level Reference Leg:.....................
Unique System Desc:.....................
01/10/11 SL2 N/A SUB MARGIN QA0005-2 MINIMUM CET SUBCOOLING MARGIN Saturation Temp.- Highest Rep CET A
Deg F N/A
-2100 Subcool 700 Subcool N/A N/A P
2 Signal Auctioneering - Minimum Reactor Internals Variable N/A N/A N/A N/A This parameter is derived from 2 subcooled values, TMARCET-A and TMARCET-B which are provided by the Qualified Safety Parameter Display System (QSPDS). They are processed by a signal auctioneering minimum algorithm. This function selects the lower of the two values to represent this point provided both values are of GOOD or POOR quality status. If either channel's value is BAD or OFF-SCAN, then the other channel's GOOD or POOR value is selected. If both channels are any combination of BAD/OFF-SCAN, then the value presented for this point is the last reliable value obtained with a quality status of BAD.
R3 I R3 I R3 R3