ML053200199
| ML053200199 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 11/07/2005 |
| From: | Thomas J. Palmisano Nuclear Management Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML053200199 (8) | |
Text
Operated Praire Island Nuclear Generating Plant COperated by Nuclear Management Company, LLC NOV 0 7 2005 L-PI-05-098 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 License Nos. DPR-42 and DPR-60 Notification of Changes to the Plant Process Computer System that will Impact the Emergency Response Data System (ERDS) and Safety Parameter Display System (SPDS)
Nuclear Management Company, LLC (NMC) is in the process of replacing the Plant Process Computer System (PPCS)/Emergency Response Computer System (ERCS) at the Prairie Island Nuclear Generating Plant (PINGP) Units 1 and 2. The current PPCS is being replaced under modification 03CO01, resulting in the computer system being taken out of service to allow cutover to the new PPCS. The implementation vendor supporting the site on this modification is Scientech. In accordance with 10 CFR 50, Appendix E.VI.3.b, this letter provides notification that PINGP Units 1 and 2, ERDS and SPDS will be out of service per the following schedule:
Unit Out of Service Return to Service PINGP Unit 1 12/5/05 12/19/05 PINGP Unit 2 1/9/06 1/23/06 It is understood that submission of the ERDS Data Point Library (DPL) changes, per 1 OCFR50, Appendix E.VI.3.a, is not required at this time. However, because several data point identifiers are being revised and the ERDS licensee site installation test procedure requires the site's DPL to be entered into ERDS as a prerequisite to the post installation testing, NMC is including with this submittal the ERDS DPL changes for PINGP Unit 1 (Enclosure 1) and Unit 2 (Enclosure 2).
In addition to the revision of several data points identified in Enclosures 1 and 2, one data point has been added (SERVERID) to provide the feeder identification as suggested by Scientech. Other changes to the DPL include additional clarification of the process and notes fields.
1717 Wakonade Drive East
- Welch, Minnesota 55089-9642 Telephone: 651.388.1121
Document Control Desk Page 2 When ERDS and SPDS become inoperable, we will be submitting an 8-hour non-emergency report in accordance with the requirements of 10 CFR 50.72(b)(3)(xiii).
Appropriate compensatory actions will be taken during the out of service time. There is no corresponding requirement contained in 10 CFR 50.73 so a follow-up licensee event report is not required. PINGP staff has informed the NRC Resident Inspectors of the plans and schedule for PPCS replacement.
Summary of Commitments This letter contains no new commitments and no revisions to existing commitments.
Thomas J. Palmisano Site Vice President, Prairie Island Nuclear Generating Plant Nuclear Management Company, LLC Enclosures (2) cc:
Administrator, Region 1II, USNRC NRR Project Manager, USNRC Resident Inspector, USNRC, Prairie Island Tom Kardaras, USNRC, Office of Nuclear Security and Incident Response
ENCLOSURE I Prairie Island Nuclear Generating Plant Unit 1 Emergency Response Data System Data Point Library 2 pages to follow
Prairie Island Nuclear plant - Unit I - ERDS DPL PROCESS DESCRIPTIONS AVG CV-AVG MAVG15 SUM DIFF QV STAB_FUNC DEFINITIONS The average of 2 values with rejection of bad quality inputs.
The average of 3 or more values with Chauvenet rejection of out of range or bad inputs.
The 15 minute moving average over time of a single value.
The sum of 2 or more inputs The Difference of 2 inputs Quality validation of a single value. ( i.e. Range checking applied ).
Atmospheric Stability function of (60 Meter - 10 meter temperature)
ABBREVIATIONS WR NR FR BWST / RWST CNTMT COND DIR HP/LP MU N/A P/S WIDE RANGE SENSORS NARROW RANGE SENSORS FULL RANGE SENSORS REFUELING WATER STORAGE TANK CONTAINMENT CONDENSER DIRECTION HIGH / LOW PRESSURE REACTOR MAKEUP NOT APPLICABLE "Process or Sensor" column heading ABBREVIATIONS NIS / NI PRZR RAD RCS RNG SAS SG Si STM T/C or TC NUCLEAR INSTRUMENTATION SYSTEM PRESSURIZER RADIATION REACTOR COOLANT SYSTEM RANGE SAFETY ASSESSMENT SYSTEM (SPDS)
STEAM GENERATOR SAFETY INJECTION STEAM 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.
- 3) There are no trip setpoints, but we have provided high and low alarm limits if any.
- 4) The "NOTES' field and "PROCESS / COMPUTATION" fields have been changed and expanded for most of the DPL
- 5) The following points have been deleted and replaced by new points in yellow: (OLD=IY4109A, NEW=IU4109A);
(OLD=1 Y41 1 OA, NEW=1 U41 I OA); (OLD=1 U2907A, NEW=1 U4135A); (OLD= 1 U2908A, NEW= 1 U4136A)
- 6) The following point is a new point (not replacing a deleted point): SERVERID
- 7) Feeder ID for unit I is "Pl1"
ENCLOSURE 2 Prairie Island Nuclear Generating Plant Unit 2 Emergency Response Data System Data Point Library 2 pages to follow
Prairie Island Nuclear plant - Unit 2 - ERDS DPL PROCESS DESCRIPTIONS AVG CV-AVG MAVG 15 SUM DIFF QV STAB_FUNC DEFINITIONS The average of 2 values with rejection of bad quality inputs.
The average of 3 or more values with Chauvenet rejection of out of range or bad inputs.
The 15 minute moving average over time of a single value.
The sum of 2 or more inputs The Difference of 2 inputs Quality validation of a single value. ( i.e. Range checking applied ).
Atmospheric Stability function of (60 Meter - 10 meter temperature)
ABBREVIATIONS WR NR FR BWST / RWST CNTMT COND DIR HP/LP MU N/A P/S WIDE RANGE SENSORS NARROW RANGE SENSORS FULL RANGE SENSORS REFUELING WATER STORAGE TANK CONTAINMENT CONDENSER DIRECTION HIGH / LOW PRESSURE REACTOR MAKEUP NOT APPLICABLE "Process or Sensor" column heading ABBREVIATIONS NIS / NI PRZR RAD RCS RNG SAS SG Si STM T/C or TC NUCLEAR INSTRUMENTATION SYSTEM PRESSURIZER RADIATION REACTOR COOLANT SYSTEM RANGE SAFETY ASSESSMENT SYSTEM (SPDS)
STEAM GENERATOR SAFETY INJECTION STEAM 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.
- 3) There are no trip setpoints, but we have provided high and low alarm limits if any.
- 4) The "NOTES" field and "PROCESS / COMPUTATION" fields have been changed and expanded for most of the DPL
- 5) The following points have been deleted and replaced by new points in yellow: (OLD=2Y4109A, NEW=2U4109A);
(OLD=2Y41 1 OA, NEW=2U41 1 OA); (OLD=2U2907A, NEW=2U4135A); (OLD=2U2908A, NEW=2U4136A)
- 6) The following point is a new point (not replacing a deleted point): SERVERID
- 7) Feeder ID for unit 2 is "P12"